npm

mfcc

Node.js implementation of the MFCC audio speech analysis algorithm.

dct

Node.js implementation of the Discrete Cosine Transform (version 2 for now).

fft-js

Simple pure Javascript implementation of the Cooley-Tukey algorithm. Note: fft-js was chosen as the name since a lot of the FFT implementations on NPM at the time this was published were wrappers for Ruby or C.

signal-windows

Node.js implementation of a sample framer (Array or Buffer) and signal windowing functions (e.g. Hamming).