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spectrogram

cathar

Function spectrogram 

Source 
pub fn spectrogram(
    signal: &[f32],
    sample_rate: u32,
    fft_size: usize,
    hop: usize,
) -> Spectrogram
Expand description

Compute the magnitude spectrogram of signal via a Hann-windowed STFT.

Magnitudes are returned in decibels (20·log10, amplitude-normalised by the window and floored at −120 dB). hop is the step between frames in samples (e.g. fft_size / 4 for 75 % overlap). A signal shorter than one frame yields an empty spectrogram.