ABox Help Basics Objects Signals Tutorials
ButtonKnob
OscillatorNoise
Math OperatorFunction 1
ADSRSample and Hold
Pitch QuantizerRandom Sequence
Math KnobDelta
DelayDivider
DamperDecay
IIR z PlaneIIR Block
SplitterMixer
MultiplexerDemultiplexer
Wave OutWave In
OscilloscopeSpectrum Analyzer
LabelFile
IIR Block

The IIR block provides simple pole/zero filter operations.


Pins:
Xinputrequired to operate
FFrequencyinputrequired to operate
RRadiusinputrequired to operate
YOutput
Controls:
None
Keyboard and Context menu:
deldelete the object
p1 conjugate pole
z1 conjugate zero
=Unity Gain
Default State:
1 conjugate pole (1CP)
internal values reset to zero at play start.
Notes:
Unity Gain computes the attenuation required for 0dB gain using the F and R pins. For Pole filters, the gain is computed for the center frequency (F). For Zero filters, the gain is computed at either 0Hz or 22050Hz.
To prevent saturation, this object clips the output at ±1.0.
R values close to ±1.0 may result in oscillation, use attenuation before the input to prevent this.