I'd like to know if there is statistical techniques that aims to find the rhythm/tempo of a music based on audio signal :
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+1 But the example is really funny: the introduction to this symphony is usually played in no fixed tempo! – whuber Oct 09 '13 at 20:41
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I wish my brain could do this! – Flounderer Oct 09 '13 at 21:10
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2Here is a question you might be interested in: http://dsp.stackexchange.com/questions/3393/extracting-audio-track-to-determine-the-song-beat – bdeonovic Oct 09 '13 at 21:13
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Autocorrelation is one of the usual ways to find tempo. Anyway, what you are actually interested in is called music information retrieval. Start looking around from Wikipedia. Then move on and make searches at http://www.pubmed.org/ (there's a plenty of brain research that consider these issues).
mir
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Thanks for your links. Is there also techniques (like time series) who can learn with an learning step :
1/A human press a button on the highlight moment of the song.
2/ The model find the highlight moments for others songs based on the audio signal.