lores~
Resonant lowpass filter
Description
lores~ implements an inexpensive lowpass with an adjustment that lets you add a specified resonance. The middle inlet sets a kind of cutoff frequency, but the sharpness of the filter depends on the resonance passed in through the right inlet (0 is a little bit sharp and 1 as sharp as possible).
The equation of the filter is
yn = scale * xn - c1 * yn-1 + c2 * yn-2
where scale, c1, and c2 are parameters calculated from the cutoff frequency and resonance factor.
Arguments
cutoff [auto]
Sets the initial cutoff frequency.
resonance [auto]
Sets the filter resonance. A resonance of 0 is a little bit sharp and 1 is as sharp as possible. Values very close to 1 may produce clipping with certain types of input signals.
Inlets
input [signal]
The signal to be filtered.
cutoff [auto]
Sets the initial cutoff frequency.
resonance [auto]
Sets the filter resonance. A resonance of 0 is a little bit sharp and 1 is as sharp as possible. Values very close to 1 may produce clipping with certain types of input signals.
Outlets
out [signal]
The filtered signal.
Dynamic Attributes
These attributes can be modified in the code during execution using the set object
clear [bang]
Clears the filter's memory. Since lores~ is a recursive filter, this message may be necessary to recover from blowups
cutoff [auto]
Sets the initial cutoff frequency.
input [signal]
The signal to be filtered.
resonance [auto]
Sets the filter resonance. A resonance of 0 is a little bit sharp and 1 is as sharp as possible. Values very close to 1 may produce clipping with certain types of input signals.
See Also
| Name | Description |
|---|---|
| lores~ | |
| biquad~ | Two-pole, two-zero filter |
| comb~ | Apply a comb filter effect |
| cross~ | Third-order crossover filter |
| reson~ | Resonant bandpass filter |
| svf~ | State-variable filter with simultaneous outputs |
| onepole~ | Single-pole lowpass filter |