Silent chunk (of a Wave file)

The silent chunk is a way to represent silence using a small number of bytes.

A silent chunk in a Wave file has the following structure.

Byte sequence description Length in bytes Starts at byte in the chunk Value
chunk ID 4 0x00 The ASCII character string "slnt"
size 4 0x04 The value 4. This value is the size of the silent chunk (number of bytes) less 8 (less the "chunk ID" and the "size")
data 4 0x08 The number of samples through which playback should be silent

Playback will halt at the last sample value, which could be silence, or could be anything else. To avoid pops and clicks, the preceding data chunk should actually end in silence (see Format chunk (of a Wave file) for information on how silence is represented).

See also:
Wave file format

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