Fft Packages

Audio processing, such as pitch detection, fft, mfcc and converting AMR NB/WB to Wave PCM data.

A C++ node.js module that allows manipulating audio streams from/to soundcards and work with the fft of the signal etc.

Convolution and cross correlation functions for ndarrays

FFT-based windowed spectrum analyzer

Typeface for visualizing waveform data

Basic timesseries functions for seismic data.

goertzel-filter implementation

Whistle detector made with WebAudio API. Works in browsers and node.

MTZ reflection data to density map (structural biology)

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

nodejs port for fftw

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

There are many javascript audio libraries, but most of them make assumptions about using Web Audio API or that audio is being manipulated in real time. Audio-fns takes a different approach, providing functions to generate and operate on audio samples wher

Distributes audio frequency data according to a logarithmic scale.

A guitar tuner in a browser using audio stream

utility for managing audio buffers, playback, and visualizations

Convert spectrum, like FFT result, to a color

Different useful echart basic option, and some methods translate input data.

Loads WAV file and draws spectrogram onto a canvas.

Unwrap phase data