使用Python实现音频双通道分离_Python

某些音频是双方对话，有可能需要对音频作通道的分离。

示例代码如下：

				?

									#!/usr/bin/env python

									# -*- coding: utf-8 -*-

									"""

									音频双通道分离

									"""

									import sys

									import numpy as np

									from scipy.io import wavfile

									from converter import mp3_to_wav

									def split_channel(wav_path, left_wav_path, right_wav_path):

									 """

									 通道分离

									 :param wav_path: wav音频的路径

									 :param left_wav_path: 左声道的wav音频路径

									 :param right_wav_path: 右声道的wav音频路径

									 :return none:

									 """

									 try:

									  sample_rate, wav_data = wavfile.read(wav_path)

									  left = []

									  right = []

									  for item in wav_data:

									   left.append(item[0])

									   right.append(item[1])

									  wavfile.write(left_wav_path, sample_rate, np.array(left))

									  wavfile.write(right_wav_path, sample_rate, np.array(right))

									 except ioerror as e:

									  print('error is %s' % str(e))

									 except:

									  print('other error', sys.exc_info())

									if __name__ == '__main__':

									 mp3_to_wav('input/test.mp3', 'tmp/tmp.wav')

									 split_channel('tmp/tmp.wav', 'output/left.wav', 'output/right.wav')

其中调用了一个自定义的库，converter.py 加入了代码：

				?

									from pydub import audiosegment

									def mp3_to_wav(source, destin):

									 """

									 mp3 转 wav

									 :param source:

									 :param destin:

									 :return none:

									 """

									 data = audiosegment.from_mp3(source)

									 data.export(destin, format='wav')