Twopole, twozero filter
Name  Type  Opt  Description 

filterparameters (5 floats)  list  opt  Up to five numbers, to set initial values for the coefficients a0, a1, a2, b1, and b2. If a signal is connected to a given inlet, the coefficient supplied as an argument for that inlet is ignored. 
int  filtercoefficient [int] 
Converted to  .
float  filtercoefficient [float] 
The coefficients in inlets 2 to 6 may be specified by a  instead of a signal. If a signal is also connected to the inlet, the is ignored.
list  filtercoefficients (5 floats) [list] 
The five coefficients can be provided as a  in the left inlet. The first number in the is coefficient a0, the next is a1, and so on. If a signal is connected to a given inlet, the coefficient supplied in the for that inlet is ignored.
clear  Clears the biquad~ object's memory of previous inputs and outputs, resetting xn1, xn2, yn1, and yn2 to 0.  
signal  In left inlet: Signal to be filtered. The filter mixes the current input sample with the two previous input samples and the two previous output samples according to the formula: yn = a0xn + a1xn1 + a2xn2  b1yn1  b2yn2. In 2nd inlet: Amplitude coefficient a0, for scaling the amount of the current input to be passed directly to the output. In 3rd inlet: Amplitude coefficient a1, for scaling the amount of the previous input sample to be added to the output. In 4th inlet: Amplitude coefficient a2, for scaling the amount of input sample n2 to be added to the output. In 5th inlet: Amplitude coefficient b1, for scaling the amount of the previous output sample to be added to the current output. In right inlet: Amplitude coefficient b2, for scaling the amount of output sample n2 to be added to the current output. . 

stoke  filter coefficient values [list] 
The word  , followed by a list that specifies a set of filter coefficient values, will preload the filter so that it starts in a given initial state, allowing the filter to be used for purposes such as a ringing oscillator.
Name  Type  g/s  Description 

smooth  int def.:1 
Toggles the smoothing of filter coeffient changes. . 
Name  Description 

buffir~  bufferbased FIR filter 
cascade~  Cascaded series of biquad filters 
comb~  Comb filter 
filtergraph~  Graphical filter editor 
lores~  Resonant lowpass filter 
onepole~  Singlepole lowpass filter 
reson~  Resonant bandpass filter 
teeth~  Comb filter with feedforward and feedback delay control 