Split audio files using silence detection

Question

I\'ve more than 200 MP3 files and I need to split each one of them by using silence detection. I tried Audacity and WavePad but they do not have batch processes and it\'s ve

Answer 1

You can try using this for splitting audio on silence without the trouble of exploring possibilities for the silence threshold

def split(file, filepath):
    sound = AudioSegment.from_wav(filepath)
    dBFS = sound.dBFS
    chunks = split_on_silence(sound, 
        min_silence_len = 500,
        silence_thresh = dBFS-16,
        keep_silence = 250 //optional
    )

Note that the silence_thresh value need not be adjusted after using this.

Additionally, if you want to split the audio by setting the min length of the audio chunk, you can add this after the above mentioned code.

target_length = 25 * 1000 //setting minimum length of each chunk to 25 seconds
output_chunks = [chunks[0]]
for chunk in chunks[1:]:
    if len(output_chunks[-1]) < target_length:
        output_chunks[-1] += chunk
    else:
        # if the last output chunk is longer than the target length,
        # we can start a new one
        output_chunks.append(chunk)

now we use output_chunks for further processing