character	Butterworth Bessel Chebyshev Resonator proportional-integral Low pass High pass band pass band stop all pass 1st order 2nd order 3rd order (might be unstable) 4th order (might be unstable)
chebyshev ripple	db (<0.0)
qfactor (resonator)	(>0.0)
frequency	Alpha Low Alpha Up or samplerate: Hz Lower corner Hz Midi note (69=A440) Upper corner Hz Midi note (69=A440)
more	matched z-transform (better off, check frequency response) prewarp (better on)
output	float type double type long type Signal bits (including sign): 8 bit 9 bit 10 bit 11 bit 12 bit 13 bit 14 bit 15 bit 16 bit 18 bit 20 bit 22 bit 24 bit -1 bit saturation save brutal shift, this will remove shifts up to 4 positions by changing the factor, hence reducing accuracy by maximum 4 bits but more efficient calculation
execution