2021-07-29 22:51:04 +00:00
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:PROPERTIES:
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:ID: 472c309f-d50b-4d3b-86cf-1af7c93db0b5
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:END:
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2021-02-20 05:17:58 +00:00
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#+title: PCM Audio
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Puse-code modulation digitally represents analog audio signals as a stream of
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measurements of the amplitude of the signal sampled at uniform intervals (the
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sampling rate) and quanitized to the nearest value within the range of available
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steps (limited by the bit depth). Multiple audio channels are commonly
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interleaved.
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* Sampling Rate
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Digital audio is typically sampled at 48 kHz (DVD video) or 44.1 kHz (CD audio).
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* Bit Depth
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| Bit Depth | Minimum Value | Maximum Value |
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|-----------+---------------+---------------|
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| 8 | -128 | 127 |
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| 16 | -32768 | 32767 |
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| 24 | -8388608 | 8388607 |
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