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fingerprints a comprehensive catalog of music, and stores the fingerprints in a database
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fingerprints a 10 second user sample of audio
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time-frequency graph (Spectrogram)
- https://en.wikipedia.org/wiki/Spectrogram
- axis is time
- y = frequency
- need to find example of "pure tone" & "white noise"
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identifying frequencies of "peak intensity."
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https://github.com/toonketels/Notes/blob/master/how-shazam-works.md
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https://www.toptal.com/algorithms/shazam-it-music-processing-fingerprinting-and-recognition
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http://gizmodo.com/5647458/how-shazam-works-to-identify-nearly-every-song-you-throw-at-it
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https://www.reddit.com/r/askscience/comments/1mdb08/how_do_apps_like_soundhound_and_shazam_work_is/