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Other transforms / reassignment methods

Open OverLordGoldDragon opened this issue 3 years ago • 2 comments

As promised (in a StackExchange thread) ... some examples for you to use for testing (and comparison) and as examples and to add to your test suite or examples archive. Just grab the sounds from the videos.

15 second segment of a drum solo at 1/4 speed https://www.youtube.com/watch?v=6orozX1GD1w

(House music with preacher talking) https://www.youtube.com/watch?v=nd2J4xTrSHQ

(The drum at full and 1/4 speed, a segment of the 2001 theme and the House segment with preacher at full and 1/4 speed) https://www.youtube.com/watch?v=itUSUau6DJM

((The Vampire Song) https://www.youtube.com/watch?v=OugT7uGGtNg

You may want to consider expanding your software to include a fuller range of transforms (or to use for comparison). The time-scale transform, which the videos show an early implementation of (in the process of being upgraded), is described in more detail in the description page of the Vampire Song. Its main property is that it is invariant with respect to arbitrary frequency reassignment (e.g. even a random scrambling of frequencies): an arbitrarily-reassigned scalogram will yield, upon inversion, the same result as the original scalogram - both reproducing the original signal.

Originally posted by @RockBrentwood in https://github.com/OverLordGoldDragon/ssqueezepy/issues/9#issuecomment-1186387394

OverLordGoldDragon avatar Jul 18 '22 22:07 OverLordGoldDragon