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ContrastConfig

pub(all) struct ContrastConfig {
  n_bands : Int
  f_min : Double
  quantile : Double
  linear : Bool
} derive(@moonbitlang/core/debug.Debug
Debug)

Configuration for Octave Spectral Contrast feature extraction.

ContrastConfig::default

fn ContrastConfig::default() -> ContrastConfig

Default Spectral Contrast configuration.

ContrastConfig::to_repr

fn ContrastConfig::to_repr(ContrastConfig) -> @moonbitlang/core/debug.Repr
Repr

quantile_sorted

fn quantile_sorted(sorted : Array[Double], q : Double) -> Double

Empirical quantile estimation on sorted double array.

spectral_contrast

fn spectral_contrast(spec : @1zhouhaoran1/moonmel/src/core/types.FeatureMatrix
FeatureMatrix, sample_rate : Int, n_fft : Int, config? : ContrastConfig) -> @1zhouhaoran1/moonmel/src/core/types.FeatureMatrix
FeatureMatrix

Compute Octave Spectral Contrast matrix from magnitude spectrogram.

spectral_contrast_audio

fn spectral_contrast_audio(audio : @1zhouhaoran1/moonmel/src/core/types.AudioBuffer
AudioBuffer, feature_config : @1zhouhaoran1/moonmel/src/core/types.FeatureConfig
FeatureConfig, contrast_config? : ContrastConfig) -> Result[@1zhouhaoran1/moonmel/src/core/types.FeatureMatrix
FeatureMatrix, @1zhouhaoran1/moonmel/src/core/types.MelError
MelError]

Extract Octave Spectral Contrast directly from single-channel AudioBuffer.

Source Files

contrast.mbt

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