如何解决如何在python中从wav文件绘制波形?
import os
import scipy.io
import scipy.io.wavfile
import numpy as np
import matplotlib.pyplot as plt
dataset_path = os.path.join(os.environ['HOME'],'shared','data','assignment_1')
wavedata = os.path.join(dataset_path,'example.wav')
fs,audio_buffer = scipy.io.wavfile.read(wavedata)
我有点不明白如何进一步使用matplotlib.pyplot 感谢您提供任何建议或正确的文档!
解决方法
这会将wav音频文件绘制在其本地时域中作为时间序列
import os
import scipy.io
import scipy.io.wavfile
import numpy as np
import matplotlib.pyplot as plt
myAudioFilename = 'aaa.wav' # plot this wav file ~/audio/aaa.wav
dataset_path = os.path.join(os.environ['HOME'],'audio') # homedir -> audiodir -> my wav files
wavedata = os.path.join(dataset_path,myAudioFilename)
sampleRate,audioBuffer = scipy.io.wavfile.read(wavedata)
duration = len(audioBuffer)/sampleRate
time = np.arange(0,duration,1/sampleRate) #time vector
plt.plot(time,audioBuffer)
plt.xlabel('Time [s]')
plt.ylabel('Amplitude')
plt.title(myAudioFilename)
plt.show()
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