如何从python中的wav文件绘制波形? [英] How to plot a waveform from wav file in python?

问题描述

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如有任何建议或正确的文档，我们将不胜感激！

And I kinda cannot understand how to further use matplotlib.pyplot Would be grateful for any advice or right documentation!

推荐答案

这会将 wav 音频文件在其原生时域中绘制为时间序列

this will plot the wav audio file in its native time domain as a time series

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()

这篇关于如何从python中的wav文件绘制波形?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！