如何在Python中绘制MFCC? [英] How to plot MFCC in Python?

问题描述

我只是信号处理的初学者.到目前为止，这是我从音频文件(.WAV)中提取MFCC功能的代码:

I'm just a beginner here in signal processing. Here is my code so far on extracting MFCC feature from an audio file (.WAV):

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

(rate,sig) = wav.read("AudioFile.wav")
mfcc_feat = mfcc(sig,rate)

print(mfcc_feat)

我只想绘制mfcc功能以了解其外观.

I just wanted to plot the mfcc features to know what it looks like.

推荐答案

这会将MFCC绘制为颜色，这是一种更为流行的方式

This will plot the MFCC as colors, which is a more popular way

import matplotlib.pyplot as plt
import numpy as np
from matplotlib import cm
fig, ax = plt.subplots()
mfcc_data= np.swapaxes(mfcc_data, 0 ,1)
cax = ax.imshow(mfcc_data, interpolation='nearest', cmap=cm.coolwarm, origin='lower')
ax.set_title('MFCC')

plt.show()

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