Struct MfccSource 

pub struct MfccSource { /* private fields */ }

SpectrogramSource backed by the MFCC pipeline (mfcc).

Produces n_mfcc bands. SpectrogramSource::center_frequencies returns coefficient indices (0.0, 1.0, 2.0, …) since MFCC coefficients do not map to specific centre frequencies.

Implementations

impl MfccSource

pub fn new( sample_rate: f64, stft_params: StftParams, n_mels: NonZeroUsize, params: MfccParams, ) -> Self

Create an MFCC source.

• sample_rate – rate (Hz) the input signal is expected at.
• stft_params – STFT configuration used by the underlying mel spectrogram.
• n_mels – number of mel filter bands.
• params – MFCC parameters (coefficient count, C0 inclusion, liftering).

pub const fn params(&self) -> &MfccParams

The MFCC parameters this source uses.

Trait Implementations

impl Clone for MfccSource

fn clone(&self) -> MfccSource

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for MfccSource

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<T: Sample> SpectrogramSource<T> for MfccSource

fn compute_matrix(&mut self, samples: &[T]) -> SpectrogramResult<Array2<T>>

Compute the [n_bands × n_frames] feature matrix for samples.

fn n_bands(&self) -> usize

Number of frequency bands (rows of the output matrix).

fn center_frequencies(&self) -> Vec<f64>

Centre frequency (Hz) of each band, low→high. Length equals Self::n_bands.

fn sample_rate(&self) -> f64

Sample rate (Hz) the source expects its input to be at.

fn hop_seconds(&self) -> f64

Seconds between successive frames (hop_size / sample_rate).