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Carlo Giacometti
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*MODERATOR NOTE: This is the notebook used in the livestream "Dive into Video Processing with Carlo Giacometti" on Wednesday, February 8 -- a part of Wolfram R&D livestream series announced and scheduled here: https://wolfr.am/RDlive For questions...
Glad you found it useful!
The implementation is from Brossier, P. M. (2006). Automatic annotation of musical audio for interactive applications (Doctoral dissertation), which itself is a variation of the one presented in Hainsworth, S. W., & Macleod, M. D. (2003, September)....
If anyone wants more quasiperiodic awesomeness, here's a superposition of five cosines whose wave vectors form a pentagon (this gives a ten fold symmetry, but if you take any direction you will find no repeating pattern): PlaneWave[x_List,...