Added Audio Codecs presentation

audiocodecs/.gitignore

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+out/
+out/**
+
+work/
+work/**

audiocodecs/Makefile

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+SRC = ./slides/*.md
+TEMP_DIR = ./work/
+TEMP_MD = $(TEMP_DIR)/work.md
+OUT_DIR = ./out/
+INCLUDE_DIR = ./media/
+
+all: $(OUT_DIR)/index.html
+
+$(OUT_DIR)/index.html: $(TEMP_MD)
+	mkdir -p $(OUT_DIR)
+	mdslides $(TEMP_MD) --include $(INCLUDE_DIR) --output $(OUT_DIR)
+
+$(TEMP_MD): $(SRC)
+	mkdir -p $(TEMP_DIR)
+	cat $(SRC) > $(TEMP_MD)
+
+preview: $(OUT_DIR)/index.html
+	xdg-open $(OUT_DIR)/index.html
+
+clean:
+	rm -rf $(OUT_DIR)/
+	rm -rf $(TEMP_DIR)/

audiocodecs/media/Cc-by-nc-sa_icon.svg

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audiocodecs/media/Opus_bitrate+latency_comparison.svg

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+  <text style="font-size:19px;font-family:DejaVu Sans"><tspan x="464.8848" y="485.08325">&gt; wideband</tspan></text>
+  <text style="font-size:19px;font-family:DejaVu Sans"><tspan x="138.71498" y="444" style="font-size:15px;font-family:DejaVu Sans">Phone quality</tspan></text>
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+  <text transform="matrix(0,1,-1,0,0,0)" style="font-size:15px;font-family:DejaVu Sans"><tspan x="95.674614" y="-662">Real-time (live)</tspan></text>
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+  <text id="text2" style="font-size:23px;text-align:center;text-anchor:middle;font-family:DejaVu Sans"><tspan x="59.024021" y="254.70996">≈</tspan></text>
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+  <text style="font-size:20px;text-align:center;text-anchor:middle;font-family:DejaVu Sans"><tspan x="210.20508" y="175.50781">Speex (NB, WB)</tspan></text>
+  <text style="font-size:22px;text-align:center;text-anchor:middle;font-family:DejaVu Sans"><tspan x="484.55859" y="170.0083">AAC-LD</tspan></text>
+  <text style="font-size:22px;text-align:center;text-anchor:middle;font-family:DejaVu Sans"><tspan x="294.98926" y="214.0083">G.722.1C</tspan></text>
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+  <text style="font-size:22px;text-align:center;text-anchor:middle;font-family:DejaVu Sans"><tspan x="286.62097" y="299.01904">AMR-WB+</tspan></text>
+  <text style="font-size:22px;text-align:center;text-anchor:middle;font-family:DejaVu Sans"><tspan x="418.30029" y="396.0791">Vorbis, AAC, MP3</tspan></text>
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+  <text style="font-size:32px;fill:#000000;stroke:#000000;font-family:Sans">
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+  <text style="font-size:32px;fill:#000000;stroke:#000000;font-family:Sans">
+    <tspan x="625.17188" y="263.64844">G.722.1C</tspan>
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+  <text style="font-size:32px;fill:#0000FF;stroke:#0000FF;font-family:Sans">
+    <tspan x="690.64844" y="514.64844">G.711</tspan>
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+  <text style="font-size:28px;font-family:Sans">
+    <tspan x="320" y="679">bitrate (kb/s)</tspan>
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+  <text style="font-size:28px;font-family:Sans">
+    <tspan x="142.77441" y="639.79102">8</tspan>
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+  <text style="font-size:28px;font-family:Sans">
+    <tspan x="319.09961" y="639.19244">16</tspan>
+  </text>
+  <text style="font-size:28px;font-family:Sans">
+    <tspan x="523.52246" y="638.19244">32</tspan>
+  </text>
+  <text style="font-size:28px;font-family:Sans">
+    <tspan x="723.52246" y="638.19244">64</tspan>
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+  </text>
+  <text style="font-size:20px;font-family:Sans">
+    <tspan x="62" y="459">narrowband</tspan>
+  </text>
+  <text style="font-size:20px;font-family:Sans">
+    <tspan x="64.195312" y="307.45605">wideband</tspan>
+  </text>
+  <text style="font-size:20px;font-family:Sans">
+    <tspan x="63.855469" y="197.45605">super-wideband</tspan>
+  </text>
+  <text style="font-size:20px;font-family:Sans">
+    <tspan x="65.549797" y="136.51758">fullband</tspan>
+  </text>
+  <use transform="translate(126.979,-340.6211)" xlink:href="#circle1"/>
+  <use transform="translate(74.979004,-324.6211)" xlink:href="#circle1"/>
+  <use transform="translate(28.979004,-298.6211)" xlink:href="#circle1"/>
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+  <use transform="translate(-295.021,-181.6211)" xlink:href="#circle1"/>
+  <use transform="translate(-334.021,-181.6211)" xlink:href="#circle1"/>
+  <text style="font-size:32px;fill:#0000FF;stroke:#0000FF;font-family:Sans">
+    <tspan x="266.28125" y="526.54688">iLBC</tspan>
+  </text>
+  <circle cx="616.021" cy="670.6210976" r="8.25" id="circle1" style="fill:#0000FF"/>
+  <text style="font-size:24px;font-family:Sans">
+    <tspan x="630.02148" y="677.62109">royalty-free, open-source</tspan>
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+  <circle cx="616.021" cy="699.6210976" r="8.25" style="fill:#000000"/>
+  <text style="font-size:24px;font-family:Sans">
+    <tspan x="629.02148" y="706.62109">royalty-free, not open-source</tspan>
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+  <circle cx="616.021" cy="728.6210976" r="8.25" style="fill:#d40000"/>
+  <text style="font-size:24px;font-family:Sans">
+    <tspan x="628.56055" y="735.62109">licensing fees, not open-source</tspan>
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+  <use transform="translate(0,-85.91113)" xlink:href="#path1"/>
+  <text style="font-size:20px;font-family:Sans">
+    <tspan x="67.549797" y="50.606445">fullband stereo</tspan>
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+  <text style="font-size:28px;font-family:Sans">
+    <tspan x="906.9873" y="640.77295">128</tspan>
+  </text>
+  <path d="m 691.0113,129.51799 c 0,0 51.42122,-21.62916 78.05855,-29.735442 54.3019,-16.52516 165.91885,-38.30053 165.91885,-38.30053" style="fill:none;stroke:#0000FF;stroke-width:6.5"/>
+  <path d="m 614.0113,129.01799 c 0,0 76.8316,-24.55278 116.05855,-33.735442 66.90471,-15.66178 202.91885,-36.30053 202.91885,-36.30053" style="fill:none;stroke:#d40000;stroke-width:6.5"/>
+  <text style="font-size:32px;fill:#0000FF;stroke:#0000FF;font-family:Sans">
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+  </text>
+  <text style="font-size:32px;fill:#d40000;stroke:#d40000;font-family:Sans">
+    <tspan x="597.14062" y="161.20605">AAC</tspan>
+  </text>
+  <path d="m 106,564 c 0,0 108.62764,-130.93334 171.41061,-187.90905 104.57989,-94.9065 197.30824,-194.96992 339.16443,-253.9001 145.1082,-60.281132 204.73066,-56.202052 318.42497,-64.190852" style="fill:none;stroke:#0000FF;stroke-width:6.5"/>
+  <path d="m 763.0113,173.01799 c 0,0 71.82567,-66.35467 115.05855,-87.735442 17.32221,-8.56668 55.91885,-15.30053 55.91885,-15.30053" style="fill:none;stroke:#0000ff;stroke-width:6.5"/>
+  <text style="font-size:32px;fill:#0000ff;stroke:#0000ff;font-family:Sans">
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audiocodecs/media/linear-PCM.svg

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+	<use xlink:href="#gpPt7" id="gpPt8" fill="currentColor" stroke="none"/>
+	<use xlink:href="#gpPt7" id="gpPt9" stroke="currentColor" transform="rotate(180)"/>
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+</g>
+<g style="fill:none; color:black; stroke:black; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:red; stroke:currentColor; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="rgb(192, 192, 192)" class="gridline" d="M72.8,352.6 L466.3,352.6  h0.01"/></g>
+<g style="fill:none; color:red; stroke:rgb(192, 192, 192); stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:black; stroke:currentColor; stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="black" d="M72.8,352.6 M466.3,352.6  h0.01"/>	<g transform="translate(61.6,358.6)" style="stroke:none; fill:black; font-family:Arial; font-size:16.00pt; text-anchor:end">
+		<text><tspan>–8</tspan></text>
+	</g>
+</g>
+<g style="fill:none; color:black; stroke:black; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:red; stroke:currentColor; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="rgb(192, 192, 192)" class="gridline" d="M72.8,330.6 L466.3,330.6  h0.01"/></g>
+<g style="fill:none; color:red; stroke:rgb(192, 192, 192); stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:black; stroke:currentColor; stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="black" d="M72.8,330.6 M466.3,330.6  h0.01"/>	<g transform="translate(61.6,336.6)" style="stroke:none; fill:black; font-family:Arial; font-size:16.00pt; text-anchor:end">
+		<text><tspan>–7</tspan></text>
+	</g>
+</g>
+<g style="fill:none; color:black; stroke:black; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:red; stroke:currentColor; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="rgb(192, 192, 192)" class="gridline" d="M72.8,308.6 L466.3,308.6  h0.01"/></g>
+<g style="fill:none; color:red; stroke:rgb(192, 192, 192); stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:black; stroke:currentColor; stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="black" d="M72.8,308.6 M466.3,308.6  h0.01"/>	<g transform="translate(61.6,314.6)" style="stroke:none; fill:black; font-family:Arial; font-size:16.00pt; text-anchor:end">
+		<text><tspan>–6</tspan></text>
+	</g>
+</g>
+<g style="fill:none; color:black; stroke:black; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:red; stroke:currentColor; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="rgb(192, 192, 192)" class="gridline" d="M72.8,286.6 L466.3,286.6  h0.01"/></g>
+<g style="fill:none; color:red; stroke:rgb(192, 192, 192); stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:black; stroke:currentColor; stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="black" d="M72.8,286.6 M466.3,286.6  h0.01"/>	<g transform="translate(61.6,292.6)" style="stroke:none; fill:black; font-family:Arial; font-size:16.00pt; text-anchor:end">
+		<text><tspan>–5</tspan></text>
+	</g>
+</g>
+<g style="fill:none; color:black; stroke:black; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:red; stroke:currentColor; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="rgb(192, 192, 192)" class="gridline" d="M72.8,264.6 L466.3,264.6  h0.01"/></g>
+<g style="fill:none; color:red; stroke:rgb(192, 192, 192); stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:black; stroke:currentColor; stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="black" d="M72.8,264.6 M466.3,264.6  h0.01"/>	<g transform="translate(61.6,270.6)" style="stroke:none; fill:black; font-family:Arial; font-size:16.00pt; text-anchor:end">
+		<text><tspan>–4</tspan></text>
+	</g>
+</g>
+<g style="fill:none; color:black; stroke:black; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:red; stroke:currentColor; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="rgb(192, 192, 192)" class="gridline" d="M72.8,242.6 L466.3,242.6  h0.01"/></g>
+<g style="fill:none; color:red; stroke:rgb(192, 192, 192); stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:black; stroke:currentColor; stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="black" d="M72.8,242.6 M466.3,242.6  h0.01"/>	<g transform="translate(61.6,248.6)" style="stroke:none; fill:black; font-family:Arial; font-size:16.00pt; text-anchor:end">
+		<text><tspan>–3</tspan></text>
+	</g>
+</g>
+<g style="fill:none; color:black; stroke:black; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:red; stroke:currentColor; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="rgb(192, 192, 192)" class="gridline" d="M72.8,220.6 L466.3,220.6  h0.01"/></g>
+<g style="fill:none; color:red; stroke:rgb(192, 192, 192); stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:black; stroke:currentColor; stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="black" d="M72.8,220.6 M466.3,220.6  h0.01"/>	<g transform="translate(61.6,226.6)" style="stroke:none; fill:black; font-family:Arial; font-size:16.00pt; text-anchor:end">
+		<text><tspan>–2</tspan></text>
+	</g>
+</g>
+<g style="fill:none; color:black; stroke:black; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:red; stroke:currentColor; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="rgb(192, 192, 192)" class="gridline" d="M72.8,198.6 L466.3,198.6  h0.01"/></g>
+<g style="fill:none; color:red; stroke:rgb(192, 192, 192); stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:black; stroke:currentColor; stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="black" d="M72.8,198.6 M466.3,198.6  h0.01"/>	<g transform="translate(61.6,204.6)" style="stroke:none; fill:black; font-family:Arial; font-size:16.00pt; text-anchor:end">
+		<text><tspan>–1</tspan></text>
+	</g>
+</g>
+<g style="fill:none; color:black; stroke:black; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:red; stroke:currentColor; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="rgb(192, 192, 192)" class="gridline" d="M72.8,176.5 L466.3,176.5  h0.01"/></g>
+<g style="fill:none; color:red; stroke:rgb(192, 192, 192); stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:black; stroke:currentColor; stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="black" d="M72.8,176.5 M466.3,176.5  h0.01"/>	<g transform="translate(61.6,182.5)" style="stroke:none; fill:black; font-family:Arial; font-size:16.00pt; text-anchor:end">
+		<text><tspan>0</tspan></text>
+	</g>
+</g>
+<g style="fill:none; color:black; stroke:black; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:red; stroke:currentColor; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="rgb(192, 192, 192)" class="gridline" d="M72.8,154.5 L466.3,154.5  h0.01"/></g>
+<g style="fill:none; color:red; stroke:rgb(192, 192, 192); stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:black; stroke:currentColor; stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="black" d="M72.8,154.5 M466.3,154.5  h0.01"/>	<g transform="translate(61.6,160.5)" style="stroke:none; fill:black; font-family:Arial; font-size:16.00pt; text-anchor:end">
+		<text><tspan>1</tspan></text>
+	</g>
+</g>
+<g style="fill:none; color:black; stroke:black; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:red; stroke:currentColor; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="rgb(192, 192, 192)" class="gridline" d="M72.8,132.5 L466.3,132.5  h0.01"/></g>
+<g style="fill:none; color:red; stroke:rgb(192, 192, 192); stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:black; stroke:currentColor; stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="black" d="M72.8,132.5 M466.3,132.5  h0.01"/>	<g transform="translate(61.6,138.5)" style="stroke:none; fill:black; font-family:Arial; font-size:16.00pt; text-anchor:end">
+		<text><tspan>2</tspan></text>
+	</g>
+</g>
+<g style="fill:none; color:black; stroke:black; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:red; stroke:currentColor; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="rgb(192, 192, 192)" class="gridline" d="M72.8,110.5 L466.3,110.5  h0.01"/></g>
+<g style="fill:none; color:red; stroke:rgb(192, 192, 192); stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:black; stroke:currentColor; stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="black" d="M72.8,110.5 M466.3,110.5  h0.01"/>	<g transform="translate(61.6,116.5)" style="stroke:none; fill:black; font-family:Arial; font-size:16.00pt; text-anchor:end">
+		<text><tspan>3</tspan></text>
+	</g>
+</g>
+<g style="fill:none; color:black; stroke:black; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:red; stroke:currentColor; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="rgb(192, 192, 192)" class="gridline" d="M72.8,88.5 L466.3,88.5  h0.01"/></g>
+<g style="fill:none; color:red; stroke:rgb(192, 192, 192); stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:black; stroke:currentColor; stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="black" d="M72.8,88.5 M466.3,88.5  h0.01"/>	<g transform="translate(61.6,94.5)" style="stroke:none; fill:black; font-family:Arial; font-size:16.00pt; text-anchor:end">
+		<text><tspan>4</tspan></text>
+	</g>
+</g>
+<g style="fill:none; color:black; stroke:black; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:red; stroke:currentColor; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="rgb(192, 192, 192)" class="gridline" d="M72.8,66.5 L466.3,66.5  h0.01"/></g>
+<g style="fill:none; color:red; stroke:rgb(192, 192, 192); stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:black; stroke:currentColor; stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="black" d="M72.8,66.5 M466.3,66.5  h0.01"/>	<g transform="translate(61.6,72.5)" style="stroke:none; fill:black; font-family:Arial; font-size:16.00pt; text-anchor:end">
+		<text><tspan>5</tspan></text>
+	</g>
+</g>
+<g style="fill:none; color:black; stroke:black; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:red; stroke:currentColor; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="rgb(192, 192, 192)" class="gridline" d="M72.8,44.5 L466.3,44.5  h0.01"/></g>
+<g style="fill:none; color:red; stroke:rgb(192, 192, 192); stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:black; stroke:currentColor; stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="black" d="M72.8,44.5 M466.3,44.5  h0.01"/>	<g transform="translate(61.6,50.5)" style="stroke:none; fill:black; font-family:Arial; font-size:16.00pt; text-anchor:end">
+		<text><tspan>6</tspan></text>
+	</g>
+</g>
+<g style="fill:none; color:black; stroke:black; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:red; stroke:currentColor; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="rgb(192, 192, 192)" class="gridline" d="M72.8,22.5 L466.3,22.5  h0.01"/></g>
+<g style="fill:none; color:red; stroke:rgb(192, 192, 192); stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:black; stroke:currentColor; stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="black" d="M72.8,22.5 M466.3,22.5  h0.01"/>	<g transform="translate(61.6,28.5)" style="stroke:none; fill:black; font-family:Arial; font-size:16.00pt; text-anchor:end">
+		<text><tspan>7</tspan></text>
+	</g>
+</g>
+	<g id="gnuplot_plot_1"><title>gnuplot_plot_1</title>
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audiocodecs/media/samples/ATTRIBUTION.md

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+music - "The Show Must Be Go" by Kevin MacLeod, CC-BY 3.0
+
+voice - LibriVox recording of "The Art of War" by Sun Tzu, Read by Moira Fogarty, Public Domain
+
+Test\_mp3\_opus\_16kbps.wav - Audio sample by Shishirdasika, licensed under CC-BY-SA 4.0

audiocodecs/media/sinewave.svg

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+</g>
+<g style="fill:none; color:red; stroke:currentColor; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="rgb(192, 192, 192)" class="gridline" d="M50.4,352.6 L466.3,352.6  h0.01"/></g>
+<g style="fill:none; color:red; stroke:rgb(192, 192, 192); stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:black; stroke:currentColor; stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="black" d="M50.4,352.6 M466.3,352.6  h0.01"/>	<g transform="translate(39.2,358.6)" style="stroke:none; fill:black; font-family:Arial; font-size:16.00pt; text-anchor:end">
+		<text><tspan>0</tspan></text>
+	</g>
+</g>
+<g style="fill:none; color:black; stroke:black; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:red; stroke:currentColor; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="rgb(192, 192, 192)" class="gridline" d="M50.4,330.6 L466.3,330.6  h0.01"/></g>
+<g style="fill:none; color:red; stroke:rgb(192, 192, 192); stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:black; stroke:currentColor; stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="black" d="M50.4,330.6 M466.3,330.6  h0.01"/>	<g transform="translate(39.2,336.6)" style="stroke:none; fill:black; font-family:Arial; font-size:16.00pt; text-anchor:end">
+		<text><tspan>1</tspan></text>
+	</g>
+</g>
+<g style="fill:none; color:black; stroke:black; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:red; stroke:currentColor; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="rgb(192, 192, 192)" class="gridline" d="M50.4,308.6 L466.3,308.6  h0.01"/></g>
+<g style="fill:none; color:red; stroke:rgb(192, 192, 192); stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:black; stroke:currentColor; stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="black" d="M50.4,308.6 M466.3,308.6  h0.01"/>	<g transform="translate(39.2,314.6)" style="stroke:none; fill:black; font-family:Arial; font-size:16.00pt; text-anchor:end">
+		<text><tspan>2</tspan></text>
+	</g>
+</g>
+<g style="fill:none; color:black; stroke:black; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:red; stroke:currentColor; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="rgb(192, 192, 192)" class="gridline" d="M50.4,286.6 L466.3,286.6  h0.01"/></g>
+<g style="fill:none; color:red; stroke:rgb(192, 192, 192); stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:black; stroke:currentColor; stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="black" d="M50.4,286.6 M466.3,286.6  h0.01"/>	<g transform="translate(39.2,292.6)" style="stroke:none; fill:black; font-family:Arial; font-size:16.00pt; text-anchor:end">
+		<text><tspan>3</tspan></text>
+	</g>
+</g>
+<g style="fill:none; color:black; stroke:black; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:red; stroke:currentColor; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="rgb(192, 192, 192)" class="gridline" d="M50.4,264.6 L466.3,264.6  h0.01"/></g>
+<g style="fill:none; color:red; stroke:rgb(192, 192, 192); stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:black; stroke:currentColor; stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="black" d="M50.4,264.6 M466.3,264.6  h0.01"/>	<g transform="translate(39.2,270.6)" style="stroke:none; fill:black; font-family:Arial; font-size:16.00pt; text-anchor:end">
+		<text><tspan>4</tspan></text>
+	</g>
+</g>
+<g style="fill:none; color:black; stroke:black; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:red; stroke:currentColor; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="rgb(192, 192, 192)" class="gridline" d="M50.4,242.6 L466.3,242.6  h0.01"/></g>
+<g style="fill:none; color:red; stroke:rgb(192, 192, 192); stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:black; stroke:currentColor; stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="black" d="M50.4,242.6 M466.3,242.6  h0.01"/>	<g transform="translate(39.2,248.6)" style="stroke:none; fill:black; font-family:Arial; font-size:16.00pt; text-anchor:end">
+		<text><tspan>5</tspan></text>
+	</g>
+</g>
+<g style="fill:none; color:black; stroke:black; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:red; stroke:currentColor; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="rgb(192, 192, 192)" class="gridline" d="M50.4,220.6 L466.3,220.6  h0.01"/></g>
+<g style="fill:none; color:red; stroke:rgb(192, 192, 192); stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:black; stroke:currentColor; stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="black" d="M50.4,220.6 M466.3,220.6  h0.01"/>	<g transform="translate(39.2,226.6)" style="stroke:none; fill:black; font-family:Arial; font-size:16.00pt; text-anchor:end">
+		<text><tspan>6</tspan></text>
+	</g>
+</g>
+<g style="fill:none; color:black; stroke:black; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:red; stroke:currentColor; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="rgb(192, 192, 192)" class="gridline" d="M50.4,198.6 L466.3,198.6  h0.01"/></g>
+<g style="fill:none; color:red; stroke:rgb(192, 192, 192); stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:black; stroke:currentColor; stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="black" d="M50.4,198.6 M466.3,198.6  h0.01"/>	<g transform="translate(39.2,204.6)" style="stroke:none; fill:black; font-family:Arial; font-size:16.00pt; text-anchor:end">
+		<text><tspan>7</tspan></text>
+	</g>
+</g>
+<g style="fill:none; color:black; stroke:black; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:red; stroke:currentColor; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="rgb(192, 192, 192)" class="gridline" d="M50.4,176.5 L466.3,176.5  h0.01"/></g>
+<g style="fill:none; color:red; stroke:rgb(192, 192, 192); stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:black; stroke:currentColor; stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="black" d="M50.4,176.5 M466.3,176.5  h0.01"/>	<g transform="translate(39.2,182.5)" style="stroke:none; fill:black; font-family:Arial; font-size:16.00pt; text-anchor:end">
+		<text><tspan>8</tspan></text>
+	</g>
+</g>
+<g style="fill:none; color:black; stroke:black; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:red; stroke:currentColor; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="rgb(192, 192, 192)" class="gridline" d="M50.4,154.5 L466.3,154.5  h0.01"/></g>
+<g style="fill:none; color:red; stroke:rgb(192, 192, 192); stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:black; stroke:currentColor; stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="black" d="M50.4,154.5 M466.3,154.5  h0.01"/>	<g transform="translate(39.2,160.5)" style="stroke:none; fill:black; font-family:Arial; font-size:16.00pt; text-anchor:end">
+		<text><tspan>9</tspan></text>
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+</g>
+<g style="fill:none; color:black; stroke:black; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:red; stroke:currentColor; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
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+<g style="fill:none; color:red; stroke:rgb(192, 192, 192); stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:black; stroke:currentColor; stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="black" d="M50.4,132.5 M466.3,132.5  h0.01"/>	<g transform="translate(39.2,138.5)" style="stroke:none; fill:black; font-family:Arial; font-size:16.00pt; text-anchor:end">
+		<text><tspan>10</tspan></text>
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+</g>
+<g style="fill:none; color:black; stroke:currentColor; stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="black" d="M50.4,110.5 M466.3,110.5  h0.01"/>	<g transform="translate(39.2,116.5)" style="stroke:none; fill:black; font-family:Arial; font-size:16.00pt; text-anchor:end">
+		<text><tspan>11</tspan></text>
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+<g style="fill:none; color:red; stroke:currentColor; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
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+<g style="fill:none; color:red; stroke:rgb(192, 192, 192); stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:black; stroke:currentColor; stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="black" d="M50.4,88.5 M466.3,88.5  h0.01"/>	<g transform="translate(39.2,94.5)" style="stroke:none; fill:black; font-family:Arial; font-size:16.00pt; text-anchor:end">
+		<text><tspan>12</tspan></text>
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+<g style="fill:none; color:black; stroke:currentColor; stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="black" d="M50.4,66.5 M466.3,66.5  h0.01"/>	<g transform="translate(39.2,72.5)" style="stroke:none; fill:black; font-family:Arial; font-size:16.00pt; text-anchor:end">
+		<text><tspan>13</tspan></text>
+	</g>
+</g>
+<g style="fill:none; color:black; stroke:black; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:red; stroke:currentColor; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="rgb(192, 192, 192)" class="gridline" d="M50.4,44.5 L466.3,44.5  h0.01"/></g>
+<g style="fill:none; color:red; stroke:rgb(192, 192, 192); stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:black; stroke:currentColor; stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="black" d="M50.4,44.5 M466.3,44.5  h0.01"/>	<g transform="translate(39.2,50.5)" style="stroke:none; fill:black; font-family:Arial; font-size:16.00pt; text-anchor:end">
+		<text><tspan>14</tspan></text>
+	</g>
+</g>
+<g style="fill:none; color:black; stroke:black; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:red; stroke:currentColor; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="rgb(192, 192, 192)" class="gridline" d="M50.4,22.5 L466.3,22.5  h0.01"/></g>
+<g style="fill:none; color:red; stroke:rgb(192, 192, 192); stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:black; stroke:currentColor; stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+	<path stroke="black" d="M50.4,22.5 M466.3,22.5  h0.01"/>	<g transform="translate(39.2,28.5)" style="stroke:none; fill:black; font-family:Arial; font-size:16.00pt; text-anchor:end">
+		<text><tspan>15</tspan></text>
+	</g>
+</g>
+	<g id="gnuplot_plot_1"><title>gnuplot_plot_1</title>
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+	</g>
+	<g id="gnuplot_plot_2"><title>gnuplot_plot_2</title>
+<g style="fill:none; color:white; stroke:red; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:green; stroke:currentColor; stroke-width:1.50; stroke-linecap:butt; stroke-linejoin:miter">
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+	</g>
+	<g id="gnuplot_plot_3"><title>gnuplot_plot_3</title>
+<g style="fill:none; color:white; stroke:rgb(127, 127, 127); stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+</g>
+<g style="fill:none; color:blue; stroke:currentColor; stroke-width:1.00; stroke-linecap:butt; stroke-linejoin:miter">
+	<use xlink:href="#gpPt6" transform="translate(50.4,176.5) scale(4.80)" color="blue"/>
+	<use xlink:href="#gpPt6" transform="translate(67.0,154.5) scale(4.80)" color="blue"/>
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+</g>
+</g>
+</svg>

audiocodecs/slides/00-title.md

@@ -0,0 +1,28 @@
+[comment]: # (THEME = blood)
+[comment]: # (CODE_THEME = base16/zenburn)
+
+[comment]: # (controls: true)
+[comment]: # (keyboard: true)
+[comment]: # (markdown: { smartypants: true })
+[comment]: # (hash: true)
+[comment]: # (respondToHashChanges: true)
+[comment]: # (slideNumber: 'c/t')
+
+[comment]: # (Note for future me, add a system to concat Markdown files in the Makefile so that this shit is easier to parse)
+[comment]: # (Probably a good starting structure [replace slidex with a better name, like 01-intro, 02-about, etc]:
+.
+├── media
+│   ├── slide1
+│   ├── slide2
+│   ├── slide3
+│   └── slide4
+└── slides
+    ├── slide1.md
+    ├── slide2.md
+    └── slide3.md
+)
+
+# Audio Codecs
+By Logan G
+
+[comment]: # (!!!) <!--------------------------------------------------------->

audiocodecs/slides/01-intro.md

@@ -0,0 +1,19 @@
+<video width="960" height="540" controls>
+  <source src="media/output.webm" type="video/webm">
+Your browser does not support the video tag.
+</video>
+
+<div style="font-size: 0.66em">
+
+```bash
+ffmpeg \
+      -i $INPUT \
+      -filter_complex "[0:a]pan=mono|c0=0.5*FL+0.5*FR,asplit=2[aout][audiovis]; \
+      [audiovis]showwaves=s=1920x1080:mode=p2p:colors=white,format=yuv420p[v]" \
+      -map "[v]" -map "[aout]" -c:v libx264 -crf 36 -c:a libaac -b:a 64k -ac 1
+      output.mp4
+```
+
+</div>
+
+[comment]: # (!!!) <!--------------------------------------------------------->

audiocodecs/slides/02-1-pcm.md

@@ -0,0 +1,39 @@
+### Digital Audio Representation
+
+<div style="text-align: center; display: grid; grid-template-columns: 1fr 1fr;">
+<div> <!-- Left pane -->
+<!-- Title -->
+
+![Picture of PCM encoded sine wave](media/sinewave.svg) <!-- .element: style="image-rendering: crisp-edges;background-color:white;" -->
+
+<div style="font-size: 0.33em; line-height: 0.1em;">
+Image by Aquegg
+
+Licensed under [CC-BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0/deed.en)
+</div>
+
+</div>
+<div> <!-- Right pane -->
+<!-- Title -->
+
+![Picture of PCM encoded waveform](media/linear-PCM.svg) <!-- .element: style="image-rendering: crisp-edges;background-color:white;" -->
+<div style="font-size: 0.33em; line-height: 0.1em;">
+Image by Aquegg
+
+Licensed under [CC-BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0/deed.en)
+</div>
+
+</div>
+</div>
+
+Note:
+Audio is typically represented in a digital form using Pulse Code Modulation, or PCM.
+
+On the left there is an example of a sine wave. The red line represents the original analog signal, with the blue dots representing the data points
+in the PCM encoded version. A similar idea is happening on the right, but with a more complex waveform.
+
+During the conversion process from analog to digital, better know as "quantization", the amplitude of the analog signal is converted into digital data points
+at regular intervals. In this example, a simple rounding algorithm is used. Do however note that there are more complicated algorithms,
+but you could spend many hours just talking about those alone, and the specifics aren't particularly important here.
+
+[comment]: # (|||) <!--------------------------------------------------------->

audiocodecs/slides/02-2-terms.md

@@ -0,0 +1,22 @@
+### Important Terminology
+
+<div style="font-size: 0.8em;">
+
+- Bit/Sampling Depth
+    - Number of bits that represent each data point
+    - Typically 16/24/32 bits
+- Sampling Rate
+    - Number of data points per second
+    - Typically 44.1/48kHz
+- Bit Rate
+    - Number of bits per second of audio
+    - Varies wildly
+- Audio Channels
+    - Number of audio streams contained
+    - Typically 2 (Stereo)
+
+</div>
+
+Note:
+
+[comment]: # (!!!) <!--------------------------------------------------------->

audiocodecs/slides/03-1-commoncodecs.md

@@ -0,0 +1,13 @@
+### Common Audio Codecs
+
+- WAV
+- FLAC
+- ALAC
+- WMA
+- Dolby Digital
+- MP3
+- AAC
+- Vorbis
+- Opus
+
+[comment]: # (|||) <!--------------------------------------------------------->

audiocodecs/slides/03-2-losslessvslossy.md

@@ -0,0 +1,33 @@
+### "Lossless" vs "Lossy"
+
+<div style="text-align: center; display: grid; grid-template-columns: 1fr 1fr;">
+<div> <!-- Left pane -->
+<!-- Title -->
+
+##### Lossless
+
+- Perfect representation of the digital input*
+- Typically very large (>1Mbit/s)
+
+</div>
+<div>
+
+##### Lossy
+
+- Deliberately removes data to save space
+- Typically very small (<128Kbit/s)
+
+</div>
+
+Note:
+There are two main types of audio codecs, "Lossless", and "Lossy".
+
+Lossless codecs perfectly duplicate whatever digital audio was put into them. Now, it is important
+to note that since digital audio isn't a perfect representation of an audio signal, that does not mean that
+it can perfectly replicate the original.
+
+Compared to lossy codecs, which, deliberately destroy the signal in order to achieve a smaller file size.
+This destruction isn't random through, lossy codecs specifically make changes to the original waveform that
+are least likely to be perceived by a human listener.
+
+[comment]: # (|||) <!--------------------------------------------------------->

audiocodecs/slides/03-3-commoncodecssorted.md

@@ -0,0 +1,27 @@
+### Common Audio Codecs
+
+<div style="text-align: center; display: grid; grid-template-columns: 1fr 1fr;">
+<div> <!-- Left pane -->
+<!-- Title -->
+
+###### Lossless
+- WAV*
+- FLAC
+- ALAC
+- WMA*
+- Dolby Digital TrueHD
+
+</div>
+<div>
+
+###### Lossy
+- MP3
+- AAC
+- WMA*
+- Dolby Digital
+- Vorbis
+- Opus
+
+</div>
+
+[comment]: # (!!!) <!--------------------------------------------------------->

audiocodecs/slides/04-1-wav.md

@@ -0,0 +1,55 @@
+### WAV
+
+- Published in 1991
+- Formerly patented
+- Not really an audio codec
+- Typically used as a container for raw audio
+- Extremely easy to play
+    - Supported natively across many OSs
+- Supports virtually any analog signal(s)
+
+<br>
+<br>
+<div style="text-align: center; display: grid; grid-template-columns: 1fr 1fr;">
+<div> <!-- Left pane -->
+<!-- Title -->
+
+##### Music
+
+<audio controls src="media/samples/music.wav">WAV Music Sample</audio>
+
+<div style="font-size: 0.33em; line-height: 0.1em;">
+"The Show Must Be Go" by Kevin MacLeod
+
+Licensed under [CC-BY 3.0](https://creativecommons.org/licenses/by/3.0/deed.en)
+</div>
+
+</div>
+<div> <!-- Right pane -->
+<!-- Title -->
+
+##### Voice
+
+<audio controls src="media/samples/voice.wav">WAV Voice Sample</audio>
+
+<div style="font-size: 0.33em; line-height: 0.1em;">
+LibriVox recording of "The Art of War" by Sun Tzu
+
+Read by Moira Fogarty
+</div>
+
+</div>
+</div>
+
+Note:
+The first codec I'm going to talk about this WAV. Now, WAV isn't actually an audio codec.
+WAV is actually just an audio container for raw audio, which I'll talk more about later.
+
+WAV was originally developed by IBM and Microsoft in 1991. It used to be a patented audio format
+but the patent has since long expired.
+
+Fun Fact: WAV is not just restricted to raw audio. It can represent many analog signals, up to 2.1GHz.
+
+WAV is also extremely easy to parse since it's basically just raw audio.
+
+[comment]: # (|||)

audiocodecs/slides/04-2-wavformat.md

@@ -0,0 +1,66 @@
+<div style="text-align: center; display: grid; grid-template-columns: 1fr 1fr;">
+<div> <!-- Left pane -->
+<!-- Title -->
+
+<div style="font-size: 0.33em;">
+
+| WAV/RIFF Header Format |
+| :------: |
+| FileTypeBlocID<br>4 bytes<br><br><br> |
+| FileSize<br>4 bytes<br><br><br> |
+| FileFormatID<br>4 bytes<br><br><br> |
+| FormatBlocID<br>4 bytes<br><br><br> |
+| BlocSize<br>4 bytes<br><br><br> |
+| AudioFormat<br>2 bytes |
+| NbrChannels<br>2 bytes |
+| Frequence<br>4 bytes<br><br><br> |
+| BytePerSec<br>4 bytes<br><br><br> |
+| BytePerBloc<br>2 bytes |
+| BitsPerSample<br>2 bytes |
+
+</div>
+</div>
+
+<div> <!-- Right pane -->
+<!-- Title -->
+
+<div style="font-size: 0.33em;">
+
+| WAV Data Chunk Format |
+| :------: |
+| DataBlocID<br>4 bytes<br><br><br> |
+| DataSize<br>4 bytes<br><br><br> |
+| SampledData<br>2-3 bytes typically<br><br><br> |
+
+</div>
+</div>
+
+</div>
+
+Note:
+So easy in fact that I can just show you the entire format.
+
+```
+[Master RIFF chunk]
+   FileTypeBlocID  (4 bytes) : Identifier « RIFF »  (0x52, 0x49, 0x46, 0x46)
+   FileSize        (4 bytes) : Overall file size minus 8 bytes
+   FileFormatID    (4 bytes) : Format = « WAVE »  (0x57, 0x41, 0x56, 0x45)
+
+[Chunk describing the data format]
+   FormatBlocID    (4 bytes) : Identifier « fmt␣ »  (0x66, 0x6D, 0x74, 0x20)
+   BlocSize        (4 bytes) : Chunk size minus 8 bytes, which is 16 bytes here  (0x10)
+   AudioFormat     (2 bytes) : Audio format (1: PCM integer, 3: IEEE 754 float)
+   NbrChannels     (2 bytes) : Number of channels
+   Frequence       (4 bytes) : Sample rate (in hertz)
+   BytePerSec      (4 bytes) : Number of bytes to read per second (Frequence * BytePerBloc).
+   BytePerBloc     (2 bytes) : Number of bytes per block (NbrChannels * BitsPerSample / 8).
+   BitsPerSample   (2 bytes) : Number of bits per sample
+
+[Chunk containing the sampled data]
+   DataBlocID      (4 bytes) : Identifier « data »  (0x64, 0x61, 0x74, 0x61)
+   DataSize        (4 bytes) : SampledData size
+   SampledData
+```
+
+[comment]: # (!!!) <!--------------------------------------------------------->
+

audiocodecs/slides/05-alac.md

@@ -0,0 +1,69 @@
+### ALAC
+
+<sup><sup>**A**pple **L**ossless **A**udio **C**odec</sup></sup>
+
+<div style="font-size: 0.55em;">
+
+- Developed in 2004
+- Fully Open Source, Patent and Royalty Free
+- Decent software support
+- Supports:
+    - 32-bit sampling depth
+    - 384kHz sampling rate
+    - 8 audio channels
+- Typically 50% the size of equivalent PCM audio
+
+<br>
+<br>
+</div>
+<div style="text-align: center; display: grid; grid-template-columns: 1fr 1fr;">
+<div> <!-- Left pane -->
+<!-- Title -->
+
+##### Music
+
+<audio controls src="media/samples/musicalac.m4a">ALAC Music Sample</audio>
+
+<div style="font-size: 0.33em; line-height: 0.1em;">
+"The Show Must Be Go" by Kevin MacLeod
+
+Licensed under [CC-BY 3.0](https://creativecommons.org/licenses/by/3.0/deed.en)
+</div>
+
+</div>
+<div> <!-- Right pane -->
+<!-- Title -->
+
+##### Voice
+
+<audio controls src="media/samples/voicealac.m4a">ALAC Voice Sample</audio>
+
+<div style="font-size: 0.33em; line-height: 0.1em;">
+LibriVox recording of "The Art of War" by Sun Tzu
+
+Read by Moira Fogarty
+</div>
+
+</div>
+</div>
+
+Note:
+Distinct from Alcohol Advisory Council of New Zealand
+Apache 2 license
+
+Now, let's talk about actual audio codecs.
+
+ALAC was first developed in 2004 by Apple.
+Although originally proprietary, Apple eventually opened up the standard
+and reference implementation under the Apache 2 license.
+
+Software support for ALAC is decent. Most modern platforms can play it, although Firefox is
+not one of them.
+
+It also has decent capabilities, such as a 32-bit sampling depth, 384kHz sampling rate and up to 8 full bandwidth audio channels.
+
+One thing that many lossless codecs, like ALAC, do, is compress raw audio. Specialzied audio codecs
+are more efficient at this job than say gzip, as they can achieve compression ratios of around 50% without
+any degradation of the audio signal.
+
+[comment]: # (!!!) <!--------------------------------------------------------->

audiocodecs/slides/06-1-wma.md

@@ -0,0 +1,11 @@
+### WMA
+
+<sup><sup>**W**indows **M**edia **A**udio</sup></sup>
+
+- Proprietary and Garbage
+
+Note:
+Now, let's talk about WMA
+It's shit.
+
+[comment]: # (|||) <!--------------------------------------------------------->

audiocodecs/slides/06-2-wma.md

@@ -0,0 +1,33 @@
+### WMA
+
+<sup><sup>**W**indows **M**edia **A**udio</sup></sup>
+
+- Developed in 1999 by Microsoft
+- Very poor software support
+- Patented with royalties
+- Lossless and Lossy versions
+- Supports:
+    - 24-bit sampling depth
+    - 96kHz sampling rate
+    - 8* audio channels
+
+Note:
+
+Okay there's a little more to say about it.
+WMA was originally developed in 1999 by none other than Microsoft in
+order to replace MP3 and WAV. Software support is extremely poor, so poor in fact
+that I could not even make audio samples for this presentation, let alone play them.
+
+This may surprise you, but WMA is both patented and has royalties for its use.
+
+WMA does come in both lossy and lossless versions, but they both are kinda garbage.
+
+It does however support up to 24-bit sampling depth, 96kHz sampling rate and up to 8 channels,
+as long as you're using the lossy version.
+
+Designed to replace MP3 and WAV
+WMA Lossless only supports 6 channels
+Microsoft lied about the audio quality
+FFmpeg only supportes WMAv1 lossy and WMAv2 lossy
+
+[comment]: # (!!!) <!--------------------------------------------------------->

audiocodecs/slides/07-ac3.md

@@ -0,0 +1,55 @@
+### Dolby Digital
+
+<sup><sup>Doesn't stand for anything</sup></sup>
+
+<div style="font-size: 0.6em;">
+
+- Patented with royalties
+- Some software support
+
+<br>
+<br>
+</div>
+
+<div style="font-size: 0.6em; text-align: center; display: grid; grid-template-columns: 1fr 1fr 1fr;">
+<div>
+
+##### Dolby AC-3
+- Lossy
+- 16-bit sampling depth
+- Up to 48kHz sampling rate
+- Up to 5+1 audio channels
+- Up to 640 kbit/s*
+
+</div>
+<div>
+
+##### Dolby Digital Plus
+- Lossy
+- 16-bit sampling depth
+- Up to 48kHz sampling rate
+- Up to 15+1 audio channels
+- Up to 6144 kbit/s
+
+</div>
+<div>
+
+##### Dolby TrueHD
+- Lossless
+- 24-bit sampling depth
+- Up to 192kHz sampling rate
+- Up to 7+1 audio channels
+
+</div>
+
+Note:
+Now, I'm gonna briefly talk about Dolby Digital. I only mentioned this one and not
+its competitor, DTS, because you can actually use this one.
+
+It's a proprietary format developed by Dolby, although it does have some software support.
+For instance, FFmpeg can both encode and decode AC-3 audio.
+
+Commonly seen on BluRays
+Mention DTS
+
+[comment]: # (!!!) <!--------------------------------------------------------->

audiocodecs/slides/08-flac.md

@@ -0,0 +1,66 @@
+### FLAC
+
+<sup><sup>**F**ree **L**ossless **A**udio **C**odec</sup></sup>
+
+<div style="font-size: 0.55em;">
+
+- Developed in 2001 by Josh Coalson, later merged into Xiph.Org
+- Fully Open Source, Patent and Royalty Free
+- Very good software support
+- Supports:
+    - 32-bit sampling depth
+    - 192kHz sampling rate
+    - 8 audio channels
+- Typically slightly better than ALAC
+
+<br>
+<br>
+</div>
+<div style="text-align: center; display: grid; grid-template-columns: 1fr 1fr;">
+<div> <!-- Left pane -->
+<!-- Title -->
+
+##### Music
+
+<audio controls src="media/samples/music.flac">FLAC Music Sample</audio>
+
+<div style="font-size: 0.33em; line-height: 0.1em;">
+"The Show Must Be Go" by Kevin MacLeod
+
+Licensed under [CC-BY 3.0](https://creativecommons.org/licenses/by/3.0/deed.en)
+</div>
+
+
+</div>
+<div> <!-- Right pane -->
+<!-- Title -->
+
+##### Voice
+
+<audio controls src="media/samples/voice.flac">FLAC Voice Sample</audio>
+
+<div style="font-size: 0.33em; line-height: 0.1em;">
+LibriVox recording of "The Art of War" by Sun Tzu
+
+Read by Moira Fogarty
+</div>
+
+</div>
+</div>
+
+Note:
+Now, for the holy grail of lossless audio codecs, FLAC.
+
+FLAC was originally made in 2001 by Josh Coalson, but was later adopted by the Xiph.Org
+foundation, who you will hear about several times throughout this presentation.
+
+It started as a fully open standard with no royalties, and is the most popular lossless codec
+for music.
+
+Many things are able to play it, even some lower end music players have FLAC support.
+
+Similar capabilities to ALAC as well.
+
+Made by Xiph Foundation
+
+[comment]: # (!!!) <!--------------------------------------------------------->

audiocodecs/slides/09-lossy.md

@@ -0,0 +1,26 @@
+### Lossy Codecs Comparison
+
+<div style="font-size: 0.33em">
+
+<div style="text-align: center; display: grid; grid-template-columns: 1fr 1fr;">
+<div>
+
+![Picture of various lossy audio codecs and their dynamic range at certain bitrates](media/Opus_quality_comparison_colorblind_compatible.svg) <!-- .element: style="width: 80%;image-rendering: crisp-edges;background-color:white;" -->
+
+Image by Jean-Marc Valin
+
+Licensed under [CC-BY 3.0](https://creativecommons.org/licenses/by/3.0/deed.en)
+
+</div>
+<div>
+
+![Chart of various audio codecs showcasing audio delay, processing power and bitrate](media/Opus_bitrate+latency_comparison.svg) <!-- .element: style="width: 80%;image-rendering: crisp-edges;background-color:white;" -->
+
+Image by Jean-Marc Valin and Flugaal
+
+Licensed under [CC-BY 3.0](https://creativecommons.org/licenses/by/3.0/deed.en)
+
+</div>
+
+[comment]: # (!!!) <!--------------------------------------------------------->
+

audiocodecs/slides/10-mp3.md

@@ -0,0 +1,56 @@
+### MP3
+
+<sup><sup>**MP**EG-1 Audio Layer **3**</sup></sup>
+
+<div style="font-size: 0.55em;">
+
+- Developed in 1992
+- Formerly patented with royalties
+- Extremely good software support
+- Supports:
+    - 16-bit sampling depth?
+    - 48kHz sampling rate
+    - 2 audio channels
+    - 320 kbit/s bitrate
+
+<br>
+<br>
+</div>
+<div style="text-align: center; display: grid; grid-template-columns: 1fr 1fr;">
+<div> <!-- Left pane -->
+<!-- Title -->
+
+##### Music
+
+<audio controls src="media/samples/music.mp3">MP3 Music Sample</audio>
+
+<div style="font-size: 0.33em; line-height: 0.1em;">
+"The Show Must Be Go" by Kevin MacLeod
+
+Licensed under [CC-BY 3.0](https://creativecommons.org/licenses/by/3.0/deed.en)
+</div>
+
+
+</div>
+<div> <!-- Right pane -->
+<!-- Title -->
+
+##### Voice
+
+<audio controls src="media/samples/voice.mp3">MP3 Voice Sample</audio>
+
+<div style="font-size: 0.33em; line-height: 0.1em;">
+LibriVox recording of "The Art of War" by Sun Tzu
+
+Read by Moira Fogarty
+</div>
+
+</div>
+</div>
+
+Note:
+Runs on toaster
+Prominent in less than legitimate music obtaining sources
+There is also MPEG-2 and MPEG-3 but they are for low bitrate and kinda suck
+
+[comment]: # (!!!) <!--------------------------------------------------------->

audiocodecs/slides/11-aac.md

@@ -0,0 +1,57 @@
+### AAC
+
+<sup><sup>**A**dvanced **A**udio **C**odec</sup></sup>
+
+<div style="font-size: 0.55em;">
+
+- Developed in 1998
+- Open standard with royalties
+- Also sometimes called "MP4 Audio"
+- Very good software support
+- Supports:
+    - 24-bit sampling depth
+    - 96kHz sampling rate
+    - 48* audio channels
+    - 256 kbit/s/channel bitrate
+
+<br>
+<br>
+</div>
+<div style="text-align: center; display: grid; grid-template-columns: 1fr 1fr;">
+<div> <!-- Left pane -->
+<!-- Title -->
+
+##### Music
+
+<audio controls src="media/samples/musicaac.m4a">AAC Music Sample</audio>
+
+<div style="font-size: 0.33em; line-height: 0.1em;">
+"The Show Must Be Go" by Kevin MacLeod
+
+Licensed under [CC-BY 3.0](https://creativecommons.org/licenses/by/3.0/deed.en)
+</div>
+
+
+</div>
+<div> <!-- Right pane -->
+<!-- Title -->
+
+##### Voice
+
+<audio controls src="media/samples/voiceaac.m4a">AAC Voice Sample</audio>
+
+<div style="font-size: 0.33em; line-height: 0.1em;">
+LibriVox recording of "The Art of War" by Sun Tzu
+
+Read by Moira Fogarty
+</div>
+
+</div>
+</div>
+
+Note:
+48 channels have up to 96kHz sampling rate, plus 16 channels with 120Hz sampling rate, plus 16 "dialog" channels, plus 16 digital data channels
+Used in bluray movies
+Fairly common bluetooth audio format
+
+[comment]: # (!!!) <!--------------------------------------------------------->

audiocodecs/slides/12-vorbis.md

@@ -0,0 +1,61 @@
+### Vorbis
+
+<sup><sup>It doesn't stand for anything :(</sup></sup>
+
+<div style="font-size: 0.55em;">
+
+- Developed in 2000 by Xiph.Org Foundation
+- Fully Open Standard and Royalty Free
+- Extremely good software support
+- Supports:
+    - Floating point samples
+    - 655.36kHz sampling rate
+    - 255 audio channels
+- Superseded by Opus
+
+<br>
+<br>
+</div>
+<div style="text-align: center; display: grid; grid-template-columns: 1fr 1fr;">
+<div> <!-- Left pane -->
+<!-- Title -->
+
+##### Music
+
+<audio controls src="media/samples/music.ogg">Vorbis Music Sample</audio>
+
+<div style="font-size: 0.33em; line-height: 0.1em;">
+"The Show Must Be Go" by Kevin MacLeod
+
+Licensed under [CC-BY 3.0](https://creativecommons.org/licenses/by/3.0/deed.en)
+</div>
+
+
+</div>
+<div> <!-- Right pane -->
+<!-- Title -->
+
+##### Voice
+
+<audio controls src="media/samples/voice.ogg">Vorbis Voice Sample</audio>
+
+<div style="font-size: 0.33em; line-height: 0.1em;">
+LibriVox recording of "The Art of War" by Sun Tzu
+
+Read by Moira Fogarty
+</div>
+
+</div>
+</div>
+
+Note:
+Encodes with quality presets, not constant/variable/target bitrates
+Floating point samples makes Vorbis very flexible, it's 32-bit floats though
+Fairly popular audiobook format
+Commonly paired with Therora video format
+Created because of a licensing dispute with MP3
+FSF approved
+Standard is public domain
+Apple are weird and don't support it
+
+[comment]: # (!!!) <!--------------------------------------------------------->

audiocodecs/slides/13-opus.md

@@ -0,0 +1,58 @@
+### Opus
+
+<sup><sup>It doesn't stand for anything either >:(</sup></sup>
+
+<div style="font-size: 0.55em;">
+
+- Developed in 2012 by Xiph.Org
+- Fully Open Standard and Royalty Free
+- Very good software support
+- Low latency, music or speech optimized audio codec
+- Supports:
+    - 16-bit sampling depth only
+    - 48kHz sampling rate
+    - 255 audio channels
+    - 256 kbit/s/channel bitrate
+
+<br>
+<br>
+</div>
+<div style="text-align: center; display: grid; grid-template-columns: 1fr 1fr;">
+<div> <!-- Left pane -->
+<!-- Title -->
+
+##### Music
+
+<audio controls src="media/samples/music.opus">Opus Music Sample</audio>
+
+<div style="font-size: 0.33em; line-height: 0.1em;">
+"The Show Must Be Go" by Kevin MacLeod
+
+Licensed under [CC-BY 3.0](https://creativecommons.org/licenses/by/3.0/deed.en)
+</div>
+
+
+</div>
+<div> <!-- Right pane -->
+<!-- Title -->
+
+##### Voice
+
+<audio controls src="media/samples/voice.opus">Opus Voice Sample</audio>
+
+<div style="font-size: 0.33em; line-height: 0.1em;">
+LibriVox recording of "The Art of War" by Sun Tzu
+
+Read by Moira Fogarty
+</div>
+
+</div>
+</div>
+
+Note:
+Commonly used for low latency voice applications (Discord, Skype (new), Teams, Source Engine 1&2, Zoom, basically anything WebRTC)
+Also commonly used for music playback (YouTube, Spotify)
+Typical latency is 27ms for default frame size
+2-way Bluetooth audio codec
+
+[comment]: # (!!!) <!--------------------------------------------------------->

audiocodecs/slides/14-weirdcodecs.md

@@ -0,0 +1,14 @@
+### Weird Audio Codecs
+
+- Codec2
+- Lyra
+- Speex
+- Full Rate
+- G.7xx
+- SILK
+
+Note:
+Full Rate and G.7xx is for telephony
+SILK is Skype
+
+[comment]: # (!!!) <!--------------------------------------------------------->

audiocodecs/slides/15-speex.md

@@ -0,0 +1,51 @@
+### Speex
+
+<div style="font-size: 0.55em;">
+
+- Developed in 2003 by Xiph.Org
+- Speech optimized, low latency audio codec
+- Fully Open Standard and Royalty Free
+- Okay software support
+- Supports:
+    - 16-bit sampling depth
+    - 32kHz sampling rate
+    - 2 audio channels
+    - 44 kbit/s bitrate
+
+</div>
+
+<div style="text-align: center; display: grid; grid-template-columns: 1fr 1fr;">
+<div> <!-- Left pane -->
+<!-- Title -->
+
+##### Music
+
+<audio controls src="media/samples/music.spx">Speex Music Sample</audio>
+
+<div style="font-size: 0.33em; line-height: 0.1em;">
+"The Show Must Be Go" by Kevin MacLeod
+
+Licensed under [CC-BY 3.0](https://creativecommons.org/licenses/by/3.0/deed.en)
+</div>
+
+</div>
+<div> <!-- Right pane -->
+<!-- Title -->
+
+##### Voice
+
+<audio controls src="media/samples/voice.spx">Speex Voice Sample</audio>
+
+<div style="font-size: 0.33em; line-height: 0.1em;">
+LibriVox recording of "The Art of War" by Sun Tzu
+
+Read by Moira Fogarty
+</div>
+
+</div>
+</div>
+
+Note:
+asd
+
+[comment]: # (!!!) <!--------------------------------------------------------->

audiocodecs/slides/16-1-c2.md

@@ -0,0 +1,53 @@
+### Codec2
+
+<!-- Samples encoded at 2400 bit/s -->
+
+<div style="font-size: 0.55em;">
+
+- Developed in 2010 by David Grant Rowe
+- Speech optimized, ultra low bandwidth audio codec
+- Fully Open Standard and Royalty Free
+- Very poor software support
+- Supports:
+    - 16-bit sampling depth only
+    - 8kHz sampling rate only
+    - 1 audio channel
+    - 3.2 kbit/s bitrate
+
+</div>
+
+<div style="text-align: center; display: grid; grid-template-columns: 1fr 1fr;">
+<div> <!-- Left pane -->
+<!-- Title -->
+
+##### Music
+
+<audio controls src="media/samples/musicc2.flac">Codec2 Music Sample</audio>
+
+<div style="font-size: 0.33em; line-height: 0.1em;">
+"The Show Must Be Go" by Kevin MacLeod
+
+Licensed under [CC-BY 3.0](https://creativecommons.org/licenses/by/3.0/deed.en)
+</div>
+
+</div>
+<div> <!-- Right pane -->
+<!-- Title -->
+
+##### Voice
+
+<audio controls src="media/samples/voicec2.flac">Codec2 Voice Sample</audio>
+
+<div style="font-size: 0.33em; line-height: 0.1em;">
+LibriVox recording of "The Art of War" by Sun Tzu
+
+Read by Moira Fogarty
+</div>
+
+</div>
+</div>
+
+Note:
+Officially supported 700 bit/s - 3200 bit/s, but a white paper exists for 450 bit/s
+Developer worked on Speex
+[comment]: # (|||) <!--------------------------------------------------------->

audiocodecs/slides/16-2-c2qr.md

@@ -0,0 +1,7 @@
+![QR code containing a Codec2 encoded recording](media/voiceqrcode.svg) <!-- .element: style="width:50%; image-rendering: pixelated;" -->
+
+```bash
+cat $FILE | c2dec 700C - - | ffplay -f s16le -ar 8000 -
+```
+
+[comment]: # (!!!) <!--------------------------------------------------------->

audiocodecs/slides/17-lbr.md

@@ -0,0 +1,71 @@
+### Low Bitrate Comparison
+
+Original:
+
+<div style="font-size: 0.3em">
+
+<audio controls src="media/samples/voice.flac">FLAC Voice Sample</audio>
+
+LibriVox recording of "The Art of War" by Sun Tzu
+<span style="padding-right: 5em"></span>
+Read by Moira Fogarty
+
+</div>
+
+---------
+
+<div style="font-size: 0.5em; text-align: center; display: grid; grid-template-columns: 1fr 1fr 1fr;">
+<div>
+
+##### Codec2
+
+2400 bit/s:
+
+<audio controls src="media/samples/voicec2.flac">C2 2400 bit/s Voice Sample</audio>
+
+----------
+
+1600 bit/s:
+
+<audio controls src="media/samples/voicec2lb.flac">C2 1600 bit/s Voice Sample</audio>
+
+</div>
+<div>
+
+##### Speex
+
+16000 bit/s:
+
+<audio controls src="media/samples/voice.spx">Speex 16kbit/s 8kHz Voice Sample</audio>
+
+----------
+
+8000 bit/s:
+
+<audio controls src="media/samples/voicelb.spx">Speex 8kbit/s 8kHz Voice Sample</audio>
+
+</div>
+<div>
+
+##### Opus
+
+32000 bit/s:
+
+<audio controls src="media/samples/voicemb.opus">Opus 32kbit/s Voice Sample</audio>
+
+----------
+
+16000 bit/s:
+
+<audio controls src="media/samples/voicelb.opus">Opus 16kbit/s Voice Sample</audio>
+
+----------
+
+8000 bit/s:
+
+<audio controls src="media/samples/voiceulb.opus">Opus 8kbit/s Voice Sample</audio>
+
+</div>
+</div>
+
+[comment]: # (!!!) <!--------------------------------------------------------->

audiocodecs/slides/18-containers.md

@@ -0,0 +1,18 @@
+### Multimedia Containers
+
+- Many audio formats cannot be stored "as-is" on disk
+- Common audio containers:
+    - RIFF/WAV (wav)
+    - MPEG-4 (mp4/m4a)
+    - OGG (ogg)
+- Uncommon audio containers:
+    - WebM (webm)
+    - Matroska (mka)
+
+Note:
+MPEG-4 supports AAC, FLAC, MP3, ALAC, and Opus
+OGG supports Vorbis, Opus, Speex, and FLAC
+WebM supports Vorbis and Opus, and is a subset of Matroska apparently
+Matroska supports everything made maybe ever
+
+[comment]: # (!!!) <!--------------------------------------------------------->

audiocodecs/slides/19-resources.md

@@ -0,0 +1,9 @@
+### Useful Resources
+
+https://trac.ffmpeg.org/wiki/Encode/HighQualityAudio
+
+https://en.wikipedia.org/wiki/Comparison_of_audio_coding_formats
+
+https://en.wikipedia.org/wiki/Codec_listening_test
+
+[comment]: # (!!!) <!--------------------------------------------------------->

audiocodecs/slides/98-source.md

@@ -0,0 +1,11 @@
+![Presentation Source QR](media/presentationsourceqr2.svg) <!-- .element: style="width:30%; image-rendering: pixelated;" -->
+
+[Presentation Source](https://git.qtechofficial.com/logan/presentations/src/branch/master/audiocodecs)
+
+<br>
+
+This presentation is licensed under [CC-BY-NC-SA 4.0](https://creativecommons.org/licenses/by-nc-sa/4.0/deed.en)
+
+![CC-BY-NC-SA Icon](media/Cc-by-nc-sa_icon.svg)
+
+[comment]: # (!!!) <!--------------------------------------------------------->

audiocodecs/slides/99-funfacts.md

@@ -0,0 +1,10 @@
+## Fun Facts:
+
+This presentation took 23 hours
+
+LibreOffice crashed 6 times, so I stopped using it
+
+<br>
+Made with mdslides + reveal.js
+
+[comment]: # (!!!) <!--------------------------------------------------------->