tonek
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## tonek

tonek — A first-order recursive low-pass filter with variable frequency response.

## Description

A first-order recursive low-pass filter with variable frequency response.

## Syntax

    kres tonek ksig, khp [, iskip]

## Initialization

iskip (optional, default=0) -- initial disposition of internal data space. Since filtering incorporates a feedback loop of previous output, the initial status of the storage space used is significant. A zero value will clear the space; a non-zero value will allow previous information to remain. The default value is 0.

## Performance

kres -- the output signal at control-rate.

ksig -- the input signal at control-rate.

khp -- the response curve's half-power point, in Hertz. Half power is defined as peak power / root 2.

tonek is like tone except its output is at control-rate rather than audio rate.

## See Also

areson, aresonk, atone, atonek, port, portk, reson, resonk, tone

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