robert bristow-johnson wrote:
so Olli, how do you get your coefficients? (if i may ask?)
If I may reply, I wrote long time ago a C++ library implementing this kind of polyphase halfband filter, including a coefficient calculator involving elliptic stuff (way beyond my knowledge). Check the PolyphaseIir2Designer class: <http://ldesoras.free.fr/prod.html#src_hiir> There is also an ARM/NEON implementation below, not published in the main release yet: <https://github.com/EleonoreMizo/pedalevite/tree/master/src/hiir> _______________________________________________ dupswapdrop: music-dsp mailing list music-dsp@music.columbia.edu https://lists.columbia.edu/mailman/listinfo/music-dsp
