/Python/How to split channels wav python

How to split channels wav python

import wave
import numpy as np

def save_wav_channel(fn, wav, channel):
    '''
    Take Wave_read object as an input and save one of its
    channels into a separate .wav file.
    '''
    # Read data
    nch   = wav.getnchannels()
    depth = wav.getsampwidth()
    wav.setpos(0)
    sdata = wav.readframes(wav.getnframes())

    # Extract channel data (24-bit data not supported)
    typ = { 1: np.uint8, 2: np.uint16, 4: np.uint32 }.get(depth)
    if not typ:
        raise ValueError("sample width {} not supported".format(depth))
    if channel >= nch:
        raise ValueError("cannot extract channel {} out of {}".format(channel+1, nch))
    print ("Extracting channel {} out of {} channels, {}-bit depth".format(channel+1, nch, depth*8))
    data = np.fromstring(sdata, dtype=typ)
    ch_data = data[channel::nch]

    # Save channel to a separate file
    outwav = wave.open(fn, 'w')
    outwav.setparams(wav.getparams())
    outwav.setnchannels(1)
    outwav.writeframes(ch_data.tostring())
    outwav.close()

wav = wave.open(WAV_FILENAME)
save_wav_channel('ch1.wav', wav, 0)
save_wav_channel('ch2.wav', wav, 1)

Source: stackoverflow.com

Similar codes

2 votes236 views2 answers
Python user input to tuple
Python
24 votes340 views5 answers
Remove a part of a string python
Python
-1 vote143 views1 answer
Pyside2 qt designer tab widget example
Python
0 vote355 views1 answer
Python beacon
Python
2 votes182 views1 answer
When did guido van rossum create python
Python
0 vote251 views3 answers
Module 'tensorflow' has no attribute 'reset_default_graph'
Python
0 vote256 views2 answers
Pandas weighted average groupby
Python
2 votes196 views1 answer
Variable in regex python
Python
15 votes206 views3 answers
Two sum python
Python
3 votes205 views1 answer
Djnagi import model form
Python