Take a look at http://isophonics.net/nnls-chroma | Hacker News

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ralmeida on March 19, 2014 | parent | context | favorite | on: Extract Chords From YouTube Videos

Take a look at http://isophonics.net/nnls-chroma

cannam on March 19, 2014 [–]

Which you can run in, for example, http://sonicvisualiser.org/

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