Filter implementation with cascade of biquads

tlecomte / friture

Real-time audio visualizations (spectrum, spectrogram, etc.)

http://friture.org

GNU General Public License v3.0

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Filter implementation with cascade of biquads #16

Open tlecomte opened 13 years ago

tlecomte commented 13 years ago

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).

endolith commented 9 years ago

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

tlecomte commented 9 years ago

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