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170712 python_speech_features_ci

Code:

from python_speech_features import mfcc
from python_speech_features import logfbank
import scipy.io.wavfile as wav

(rate,sig) = wav.read("file.wav")
mfcc_feat = mfcc(sig,rate)
fbank_feat = logfbank(sig,rate)

print(fbank_feat[1:3,:])

mfcc_feat, fbank_feat are 2D matrics
mfcc_feat: the number of row stands for the the frame number, each frame(帧) covers a sub-band of signal
mfcc_feat: the number of columns stands for the filters numbers