Plugin interface — screenshot pending
Filter

Spectral Gate

Apple

Where to get itIncluded with Logic Pro. It is part of that DAW, not a separate download.apple.com

Spectral Gate is an unusual filter effect plugin for creative sound design that divides incoming audio into two frequency ranges above and below a user-defined central frequency band. It allows individual processing of upper and lower frequency ranges through level and energy controls, with optional modulation of the center frequency and bandwidth for dynamic tonal manipulation.

Written from the manual and checked against it. How we check

Key Features

01Threshold, Speed, CF Modulation, and BW Modulation controls
02Center Frequency and Bandwidth parameters with graphic display
03Low Level and High Level sliders for frequency range blending
04Super Energy and Sub Energy knobs for threshold-split frequency control
05Gain slider for output level adjustment

Things to Try

  • 01Start with a drum loop, set Center Freq to minimum (20 Hz) and Bandwidth to maximum (20,000 Hz) to process the entire frequency range, then turn up Super Energy and Sub Energy knobs one at a time while trying different Threshold settings
  • 02After establishing a sound, narrow the Bandwidth parameter drastically, gradually increase Center Freq, then use Low Level and High Level sliders to mix in treble and bass from the original signal
  • 03At lower Speed settings, turn up the CF Modulation or BW Modulation sliders to modulate the defined frequency band
Official Website↗User Manual↗

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Spectral Gate by Apple | Plugin Library