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