audio - How to extract a Sound envelope from a .wav file using Python? -

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i have sound file comprise of instrumental sound. want examine each note of instrument extracting audio file. can use python doing or other open source software can recommend this. got waveform using audacity. have attached image of sound file , red mark indicate portion extracted. starting , ending of envelope. (only single instrument played in audio file).
[waveform of sound file

the thing want called envelope detector or envelope follower. maybe try out pyo project this. analysis module has few envelope followers available.

edit: appear have misunderstood question title. want split notes? extract envelope, split based on threshold.


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