@audio/pitch-autocorrelation

import autocorrelation from '@audio/pitch-autocorrelation'

Normalized autocorrelation — the simplest pitch estimator. Educational baseline.

let result = autocorrelation(samples, { fs: 44100 })

Use when: Learning, quick prototypes, signals with strong dominant periodicity and low noise.
Not for: Production — octave errors are common without additional heuristics.
Ref: Rabiner, "Use of autocorrelation analysis for pitch detection", IEEE TASSP 1977.
Complexity: $O(N^2/4)$.

Part of @audio/pitch — the pitch family umbrella. This README is generated from the umbrella docs.

MIT © audiojs