Compute MFCCs

compute_mfccs.py

from essentia.standard import MFCC, FrameGenerator

mfcc = MFCC(highFrequencyBound=f_high,
            lowFrequencyBound=f_low,
            inputSize=1024,
            numberBands=n_bands,
            numberCoefficients=13,
            type='magnitude',
            sampleRate=44100)

# Compute MFCCs for all frames
mfccs = []
for frame in FrameGenerator(audio,
                            frameSize=1024,
                            hopSize=512,
                            startFromZero=True):
    _, coeffs = mfcc(spectrum(w(frame)))
    mfccs.append(coeffs)

# Take the transpose so frames can be plotted on the x-axis
mfccs = essentia.array(mfccs).T