音频转图片python脚本

  1 import wave
  2 
  3 import pylab as pl
  4 
  5 import numpy as np
  6 
  7 # 打开WAV文档
  8 
  9 f = wave.open(r”flag.wav”, “rb”)
 10 
 11 # 读取格式信息
 12 
 13 # (nchannels, sampwidth, framerate, nframes, comptype, compname)
 14 
 15 params = f.getparams()
 16 
 17 nchannels, sampwidth, framerate, nframes = params[:4]
 18 
 19 print(params)
 20 
 21 # 读取波形数据
 22 
 23 str_data = f.readframes(nframes)
 24 
 25 f.close()
 26 
 27 #将波形数据转换为数组
 28 
 29 wave_data = np.fromstring(str_data, dtype=np.short)
 30 
 31 wave_data.shape = –1, 2
 32 
 33 wave_data = wave_data.T
 34 
 35 time = np.arange(0, nframes) * (1.0 / framerate)
 36 
 37 # 绘制波形
 38 
 39 pl.subplot(211)
 40 
 41 pl.plot(time, wave_data[0])
 42 
 43 pl.subplot(212)
 44 
 45 pl.plot(time, wave_data[1], c=“g”)
 46 
 47 pl.xlabel(“time (seconds)”)
 48 
 49 pl.show()
 50 

黑科技。。