@audio/mir-multif0

Multiple-F0 estimation — Klapuri (2006) iterative spectral subtraction: whiten the magnitude spectrum, find the maximum-salience F0, subtract its harmonic pattern, repeat until salience collapses.

npm install @audio/mir-multif0

import multif0 from '@audio/mir-multif0'

let frames = multif0(data, { fs: 44100 })
// Array<{ time, pitches: Array<{ freq, salience }> }>

Options: - fs — sample rate (default 44100, Hz) · frameSize — analysis window, samples (default 4096) · hopSize — frame hop, samples (default frameSize / 2) · minFreq/maxFreq — pitch search range (default 60/1200, Hz) · maxPitches — pitches per frame (default 6) · harmonics — partials scored per candidate (default 12) · threshold — fraction of the frame's top salience a pitch must reach (default 0.4)

Also exported as an audio.js stat manifest (./audio).

Part of @audio/mir.