python3.6音频处理用到的操作

原文学习自&＃xff1a;https://www.cnblogs.com/xingshansi/p/6799994.html

python3.6

import wave
import matplotlib.pyplot as plt
import numpy as np
import os

filepath &＃61; "./data/" #添加路径
filename&＃61; os.listdir(filepath) #得到文件夹下的所有文件名称
f &＃61; wave.open(filepath&＃43;filename[1],&＃39;rb&＃39;)
params &＃61; f.getparams()
nchannels, sampwidth, framerate, nframes &＃61; params[:4]
strData &＃61; f.readframes(nframes)#读取音频&＃xff0c;字符串格式
waveData &＃61; np.fromstring(strData,dtype&＃61;np.int16)#将字符串转化为int
waveData &＃61; waveData*1.0/(max(abs(waveData)))#wave幅值归一化
# plot the wave
time &＃61; np.arange(0,nframes)*(1.0 / framerate)
plt.plot(time,waveData)
plt.xlabel("Time(s)")
plt.ylabel("Amplitude")
plt.title("Single channel wavedata")
plt.grid(True)#标尺&＃xff0c;on&＃xff1a;有&＃xff0c;off:无。
plt.savefig(&＃39;D:\\commonNeighbors_CDF_snapshots.eps&＃39;,dpi &＃61; 1000,bbox_inches&＃61;&＃39;tight&＃39;)
plt.show()