Struct PitchDetector 

pub struct PitchDetector;

Monophonic pitch detection.

Implementations

impl PitchDetector

pub fn yin( signal: &[f32], sample_rate: f32, min_hz: f32, max_hz: f32, ) -> Option<f32>

YIN algorithm pitch detection.

pub fn autocorr(signal: &[f32], sample_rate: f32) -> Option<f32>

Autocorrelation-based pitch detection.

pub fn harmonic_product_spectrum(spectrum: &[f32], sample_rate: f32) -> f32

Harmonic Product Spectrum pitch detection.

pub fn midi_note(freq: f32) -> f32

Convert frequency in Hz to MIDI note number (A4=69=440Hz).

pub fn note_name(midi: f32) -> String

Convert MIDI note to a human-readable name like “A4” or “C#3”.

pub fn detect_from_signal(signal: &[f32], sample_rate: f32) -> Option<f32>

Detect pitch from a signal using STFT + HPS on each frame, returning median.

pub fn pitch_confidence( spectrum: &Spectrum, fundamental_hz: f32, sample_rate: f32, ) -> f32

Estimate pitch confidence (clarity) for a given frequency from a spectrum.