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🚀 Feature
I would like to propose adding of A-Law to torchaudio.transforms
Motivation
A-law is a companding algorithm similar to mu-law (that is already in torchaudio). It is used in European 8-bit PCM systems. By convention, A-law is used for an international connection if at least one country uses it. With these transforms torchaudio would
enable even wider modelling capabilities of telephony audio.
Pitch
I imagine the API could be almost identical to MuLaw with one caveat - the compression parameter A would be an additional parameter. So at the end there would be two additional transforms ALawEncoding and ALawDecoding.
Additional context
I have already written the code and would be happy to open a PR.
Issue Analytics
- State:
- Created 3 years ago
- Comments:5 (2 by maintainers)
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The only reference implementation I seem to find is the wikipedia graph:
Running a linspace vector through unquantized A law encoding yields:
I’ve updated the comment to make it clearer what’s entailed 😃