sadko4u
High-resolution spectrogram technique
I recently learned about a technique utilizing the phase information of an FFT to create a more accurate frequency analyzer that has greater frequency resolution, particularly in the bass frequency range.
Here's a youtube video describing it: https://www.youtube.com/watch?v=8J4LE9UpxYU
I mentioned this to @Tremeschin on discord (in unfa's community chat), who researched and made an implementation in python for https://github.com/BrokenSource/ShaderFlow. The implementation in shaderflow isn't complete yet, but @Tremeschin may be able to provide some insight into how this works
More resources linked in the description of the above video: [1] https://en.wikipedia.org/wiki/Reassignment_method [2] https://people.ece.cornell.edu/land/PROJECTS/ReassignFFT/index.html [3] https://arxiv.org/pdf/0903.3080 [4] https://hal.science/hal-00414583/document
Hi! Very interesting stuff. Not sure that I have much time for it now but I saved documents and scientific papers to prevent them to be lost or deleted.
