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    PitchTrack

    source
    pub(all) struct PitchTrack {
      f0 : Array[Double]
      voiced_prob : Array[Double]
      periods : Array[Double]
    } derive(
    Debug    )

    Output of pitch tracking analysis.

    PitchTrack::to_repr

    source

    YinConfig

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    pub(all) struct YinConfig {
      f_min : Double
      f_max : Double
      threshold : Double
      frame_length : Int
      hop_length : Int
    } derive(
    Debug    )

    YIN algorithm configuration for fundamental frequency (F0) pitch tracking.

    YinConfig::default

    source
    fn YinConfig::default() -> YinConfig

    Default YIN configuration (65 Hz to 2093 Hz, threshold 0.1, 2048 frame, 512 hop).

    YinConfig::to_repr

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    cumulative_mean_normalized_difference

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    fn cumulative_mean_normalized_difference(d : Array[Double]) -> Array[Double]

    Compute Cumulative Mean Normalized Difference Function (CMNDF) d'_t(tau).

    difference_function

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    fn difference_function(frame : Array[Double], tau_max : Int) -> Array[Double]

    Compute difference function d_t(tau) for a frame of samples.

    pitch_yin

    source

    Extract frame-wise pitch track from single-channel AudioBuffer using YIN.

    yin_frame

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    fn yin_frame(frame : Array[Double], sample_rate : Int, f_min : Double, f_max : Double, threshold : Double) -> (Double, Double, Double)

    Analyze F0 pitch and voicing confidence for a single frame.

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