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Filter eects overview
Filters are used to emphasize or suppress frequencies in an audio signal, resulting in a change in
the tonal color of the audio.
Logic Pro X contains a variety of advanced lter-based eects that you can use to creatively
modify your audio. These eects are most often used to radically alter the frequency spectrum of
a sound or mix.
Note: Equalizers (EQs) are special types of lters. They are not usually used as “eects” per se,
but as tools to rene the frequency spectrum of a sound or mix. See Equalizers overview on
page 104.
AutoFilter
AutoFilter overview
AutoFilter is a versatile lter eect with several unique features. You can use it to create classic,
analog-style synthesizer eects, or as a tool for creative sound design.
The eect works by analyzing incoming signal levels through use of a threshold parameter. Any
signal level that exceeds the threshold is used as a trigger for a synthesizer-style ADSR envelope
or an LFO (low frequency oscillator). These control sources are used to dynamically modulate the
lter cuto.
The AutoFilter allows you to choose between dierent lter types and slopes, control the amount
of resonance, add distortion for more aggressive sounds, and mix the original, dry signal with the
processed signal.
Filter
parameters
Threshold
parameter
Envelope
parameters
Distortion parameters
LFO parameters
Output
parameters
Filter eects
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