Source:setFilter

Available since LÖVE 11.0

This function is not supported in earlier versions.

Sets a low-pass, high-pass, or band-pass filter to apply when playing the Source.

Function

Synopsis

success = Source:setFilter( settings )

Arguments

table settings

The filter settings to use for this Source, with the following fields:

FilterType type

The type of filter to use.

number volume

The overall volume of the audio. Must be between 0 and 1.

number highgain

Volume of high-frequency audio. Only applies to low-pass and band-pass filters. Must be between 0 and 1.

number lowgain

Volume of low-frequency audio. Only applies to high-pass and band-pass filters. Must be between 0 and 1.

Returns

boolean success

Whether the filter was successfully applied to the Source.

Function

Disables filtering on this Source.

Synopsis

Source:setFilter( )

Arguments

None.

Returns

Nothing.

Examples

Playing music at half volume with a low pass filter applied

function love.load()
    local source = love.audio.newSource('music.ogg', 'stream')
    source:setFilter {
        type = 'lowpass',
        volume = .5,
        highgain = .4,
    }
    source:play()
end

Notes

Audio filter functionality is not supported on iOS.

While the cutoff frequency cannot be set directly, changing high/lowgain has the effect of altering the cutoff. See it explained in this thread.

See Also

• Source
• Source:getFilter
• Source:setEffect

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