WaveNet: Mu-law Companding
Intermediate
The problem, from first principles
WaveNet quantizes each audio sample to 256 levels, and mu-law companding spaces those levels so that quiet sounds get finer resolution. The compressed signal is what gets quantized.
From theory to code
Implement mu_law_encode(x, mu), the logarithmic compression of the signal.
Constraints
- Input samples lie in [-1, 1].
Hints
Hint 1
Compute the log of one plus mu times the magnitude, divide by the log of one plus mu, and restore the sign.
Keywords
research-paperssequence-modelsgenerative-audioconvolution
Python
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