class:: OnePole
summary:: One pole filter.
related:: Classes/OneZero
categories::  UGens>Filters>Linear


Description::

A one pole filter. Implements the formula:

code::

out(i) = ((1 - abs(coef)) * in(i)) + (coef * out(i-1)).

::


classmethods::

method::ar, kr

argument::in

The input signal.


argument::coef

Feedback coefficient. Should be between -1 and +1


argument::mul

Output will be multiplied by this value.


argument::add

This value will be added to the output.


Examples::

code::

{ OnePole.ar(WhiteNoise.ar(0.5), 0.95) }.play

{ OnePole.ar(WhiteNoise.ar(0.5), -0.95) }.play

{ OnePole.ar(WhiteNoise.ar(0.5), Line.kr(-0.99, 0.99, 10)) }.play

::