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ADPCM audio
File type: Various data file
An adpcm file extension is related Adaptive Delta Pulse Code Modulation a subclass of Microsoft WAVE format.
File type category:
Various data file
Date updated: July 13, 2025
The adpcm file extension is associated with the Adaptive Delta Pulse Code Modulation (ADPCM) a subclass of the Microsoft waveform (wav) file format.
The adpcm audio storing waveforms in 16-bit or 8-bit PCM. It only uses 4 bits per sample, taking up a quarter of the disc space of 16-bit PCM. However, the sound quality is inferior.
The adpcm format can also used wav file extension.
Use any audio playback tool, like VLC player to playback *.adpcm files.
Audio files can be usually converted between various formats, so *.adpcm files can be converted to other audio like mp3 and others.
Apps designed for playing adpcm files:
Microsoft Windows
Apple macOS / Mac OS X
Linux/Unix
Software applications that handle other tasks involving adpcm files:
Microsoft Windows
Multiplatform
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