Wikimedi'Òc

BiquadFilter1.PNG - Ironphoenix~commonswiki

Kerwin-Huelsman-Newcomb.svg - Fcorthay

Tow-Thomas.svg - Fcorthay

BiquadFilter1.svg - Svjo

State variable filter with transmission zeroes.png - Constant314

Tow-Thomas active filter with complimentary bandpass outputs.png - Constant314

Tow-Thomas active filter with summing inputs and complimentary bandpass outputs.png - Constant314

Filtre Biquad.png - Mewtow

Akerberg-Mossberg filter.svg - RatónMístico176