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Show HN: Real-time bandpass filter bank audio spectogram (grz0zrg.github.io)
14 points by afgho 2191 days ago
1 comments
seesawtron 2191 days ago
Cool. The lower is original signal and upper is after band pass filter?
link
afgho 2191 days ago
It show two methods which are doing the same frequency extraction job, the lower one is Web Audio analyzer node (quite common and fast, FFT based) and upper is analysis using Web audio biquad bandpass filter bank (slower but more flexible)

https://github.com/grz0zrg/WABSP2

link