Is there open source audio feature extraction software avaliable?

You might want to look into the Echo Nest API It has a lot of audio analysis capabilities, and I know there's a script bundled in the Remix package that can automagically turn songs into shorter or longer versions (I believe the script is called earworm).

You might want to look into the Echo Nest API. It has a lot of audio analysis capabilities, and I know there's a script bundled in the Remix package that can automagically turn songs into shorter or longer versions (I believe the script is called earworm).

Try JAudio which can extract features from an audio.

YAAFE (Yet Another Audio Feature Extractor) yaafe.sourceforge.net/ does audio feature extraction in MATLAB, Python and C.

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