setFilter()

Purpose

Set audio filter

Description

Applies a filter to the given audio channel

Syntax

setFilter( channel, type, cutoff )

Arguments

channel audio channel from 0 to 15

type off (0), lowpass (1) - all frequencies above cutoff cut, highpass (2) - all frequencies below cut

cutoff frequency at which the filter is applied

Example

tune = loadAudio( "David Silvera/music_disco_funky" )
type = 0
lowpass = 1
highpass = 2
cutoff = 200
press = false
playAudio( 0, tune, 1, 0.5, 1, -1 )

loop
    clear()
    c = controls( 0 )
    if c.a and !press then
        type = lowpass
    endIf
    if c.b and !press then
        type = highpass
    endIf
    if !c.a and !c.b then
        press = false
    endIf
    cutoff += c.ly * 10
    cutoff = max( cutoff, 0 )
    setFilter( 0, type, cutoff )
    printAt( 0, 0, "Move the control stick up and down to adjust filter cutoff frequency" )
    printAt( 0, 2, "Press the A button to select low-pass filter" )
    printAt( 0, 3, "Press the B button to select high-pass filter" )
    printAt( 0, 5, "Filter cutoff frequency: " + cutoff )
    printAt( 0, 6, "Filter type: " + type )
    update()
repeat

Associated Commands