Musical pitch class detection audio library [closed]

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Does anyone know a good open-source library with detection of harmonic pitch class intensities (chroma) of audio signal? That is, for a given piece of audio, intensity of each of 12 musical pitches.

http://en.wikipedia.org/wiki/Harmonic_pitch_class_profiles

It can be in c, c++, or java as long as the speed (complexity) is good. I don't need it for real-time use, but would use it on h开发者_Go百科ours of material, so speed is a bit more important than quality.

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Have a look at the Chromagram plugin in the QM Vamp Plugin library. To make sure it's exactly what you want, you can download a binary and test it in Sonic Visualizer before compiling it yourself.

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Take a look a this webpage. The Website of Dan Ellis has tons of sound-related MATLAB examples

http://www.ee.columbia.edu/~dpwe/resources/matlab/chroma-ansyn/