Get .wav file length or duration

Question

I\'m looking for a way to find out the duration of a audio file (.wav) in python. So far i had a look at python wave library, mutagen, pymedi

Answer 1

A very simple method is to use pysoundfile, https://github.com/bastibe/PySoundFile

Here's some example code of how to do this:

import soundfile as sf
f = sf.SoundFile('447c040d.wav')
print('samples = {}'.format(len(f)))
print('sample rate = {}'.format(f.samplerate))
print('seconds = {}'.format(len(f) / f.samplerate))

The output for that particular file is:

samples = 232569
sample rate = 16000
seconds = 14.5355625

This aligns with soxi:

Input File     : '447c040d.wav'
Channels       : 1
Sample Rate    : 16000
Precision      : 16-bit
Duration       : 00:00:14.54 = 232569 samples ~ 1090.17 CDDA sectors
File Size      : 465k
Bit Rate       : 256k
Sample Encoding: 16-bit Signed Integer PCM