How can i pad wav file to specific length?

问题

I am using wave files for making deep learning model they are in different length , so i want to pad all of them to 16 sec length using python

回答1:

Using pydub:

from pydub import AudioSegment

pad_ms = 1000  # milliseconds of silence needed
silence = AudioSegment.silent(duration=pad_ms)
audio = AudioSegment.from_wav('you-wav-file.wav')

padded = audio + silence  # Adding silence after the audio
padded.export('padded-file.wav', format='wav')

AudioSegment objects are immutable

回答2:

If I understood correctly, the question wants to fix all lengths to a given length. Therefore, the solution will be slightly different:

from pydub import AudioSegment

pad_ms = 1000  # Add here the fix length you want (in milliseconds)
audio = AudioSegment.from_wav('you-wav-file.wav')
assert pad_ms > len(audio), "Audio was longer that 1 second. Path: " + str(full_path)
silence = AudioSegment.silent(duration=pad_ms-len(audio)+1)


padded = audio + silence  # Adding silence after the audio
padded.export('padded-file.wav', format='wav')

This answer differs from this one in the sense that this one creates all audios from the same length where the other adds the same size of silence at the end.

来源：https://stackoverflow.com/questions/52841335/how-can-i-pad-wav-file-to-specific-length