:PROPERTIES:
:ID:       472c309f-d50b-4d3b-86cf-1af7c93db0b5
:END:
#+title: PCM Audio

Puse-code modulation digitally represents analog audio signals as a stream of
measurements of the amplitude of the signal sampled at uniform intervals (the
sampling rate) and quanitized to the nearest value within the range of available
steps (limited by the bit depth). Multiple audio channels are commonly
interleaved.

* Sampling Rate
Digital audio is typically sampled at 48 kHz (DVD video) or 44.1 kHz (CD audio).
* Bit Depth
| Bit Depth | Minimum Value | Maximum Value |
|-----------+---------------+---------------|
|         8 |          -128 |           127 |
|        16 |        -32768 |         32767 |
|        24 |      -8388608 |       8388607 |