MFCC-WASM

A small and fast Mel Frequency Cepstral Coefficient calculator written in C. Intended to be compiled to WASM and used in JavaScript.

Using KissFFT (BSD 3-clause) and libmfcc (MIT).

The module exports default async function that takes configuration parameters:

options = {
  frameSize:  480,
  sampleRate: 16000,
};

The function resolves to MFCC instance which has 2 methods.

mfcc.destroy();
mfcc.getMFCC(frame, filterBanks, m);

destroy() free resources used by this instance in c. getMFCC() takes audio frame buffer as the first argument. It can be any sequence of numbers. It's converted to Float64Array internally.

filterBanks and m are integers and optional. m is the number of coefficients to calculate. This method returns Float64Array containing the coefficients.