Filter implementation with cascade of biquads

Open tlecomte opened this issue 14 years ago • 2 comments

Currently, high-order IIR filters are used for decimation and fractional octave filters, and they are implemented as brute-force filtering, whereas it is advised to use series of biquads to achieve more stability (the use of floats instead of integers mitigates the issue).

Jul 12 '11 11:07 tlecomte

This will be built into scipy soon: https://github.com/scipy/scipy/issues/2444

Jan 06 '15 21:01 endolith

@endolith: Thanks !! It will be interesting to use that when released. If only I had more time to test it...

Jan 13 '15 19:01 tlecomte