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Description
The documentation error originates in updates to TriangularBands algorithm introduced in 4c8f489 (#227), which changed the compression from log10 to log2, but the documentation wasn't updated accordingly. It was later propagated to other algorithms based on or reusing code from TriangularBands: TriangularBarkBands (9de18e6), MelBands (5d1e8bc), SpectrumToCent.
In all these algorithm the actual log compression is log2(1+x) instead of log10(1+x).
The MFCC and BFCC algorithms aren't affected as they work with raw energy values output by MelBands and apply their own log normalization for the computation of cepstrum coefficients.