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