Function mfcc 

pub fn mfcc(
    samples: &NonEmptySlice<f64>,
    stft_params: &StftParams,
    sample_rate: f64,
    n_mels: NonZeroUsize,
    mfcc_params: &MfccParams,
) -> SpectrogramResult<Mfcc>

Compute MFCCs directly from audio samples.

This is a convenience function that computes a mel spectrogram, converts to log scale, and extracts MFCC features in a single call.

Arguments

• samples - Audio samples (any type that can be converted to a slice)
• stft_params - STFT parameters
• sample_rate - Sample rate in Hz
• n_mels - Number of mel bands
• mfcc_params - MFCC computation parameters

Returns

An Mfcc structure containing the coefficients.

Errors

Returns an error if any step of the computation fails.

Examples

use spectrograms::*;
use non_empty_slice::non_empty_vec;

let samples = non_empty_vec![0.0; nzu!(16000)];
let stft = StftParams::new(nzu!(512), nzu!(160), WindowType::Hanning, true)?;
let mfcc_params = MfccParams::speech_standard();

let mfccs = mfcc(&samples, &stft, 16000.0, nzu!(40), &mfcc_params)?;

assert_eq!(mfccs.n_coefficients(), nzu!(13));
println!("MFCCs: {} coefficients x {} frames",
         mfccs.n_coefficients(), mfccs.n_frames());