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Multiband Upward/Downward Compressor

Download free Part of NULL JSFX 2.5: 113 plugins, free and open source (MIT). Easiest with NULL JSFX Hub.

Listen

The same music with the Parallel Polish preset and without the plugin. Switch while it plays.

Controls

Depth0 to 100% — Blend between dry signal and the compressed signal
Time0 to 400% — Scales attack and release times (100% = 13.5 ms / 132 ms)
Upward0 to 100% — Amount of upward compression lifting quiet parts
Downward0 to 100% — Amount of downward compression pushing down loud parts
Low Gain−12 to +12 dB — Gain of the low band (below 88 Hz)
Mid Gain−12 to +12 dB — Gain of the mid band (88 Hz–2.5 kHz)
High Gain−12 to +12 dB — Gain of the high band (above 2.5 kHz)
Output−12 to +12 dB — Final output level

Best uses

Aggressive, dense EDM sound design
Bring out detail and tails in synths
Make drums and loops hit harder
Thicken vocals and effects for impact
Parallel squash with low Depth

Properties

Signal chain: Input → 3-Band Linkwitz-Riley Split (88 Hz, 2.5 kHz) → Per-Band Downward (66:1 above −33 dB) + Upward (4:1 below −41 dB, up to +24 dB) → Band Gains → Make-up → Depth Mix → Output → Soft Safety Clip. Linked stereo detection per band, zero latency.

Formats

JSFXJSFX for REAPER, with REAPER's own sliders
GFXJSFX GFX for REAPER, with its own interface
VST3VST3 for any DAW
CLAPCLAP for any DAW

Factory presets

Parallel Polish · Synth Detail · Drum Loop Smash · Vocal Thickener · Upward Only Detail · Downward Only Tame · Bright Air Squash · Slow Pad Bloom

In the FX chains and Rack presets

Mix Bus Finisher · Parallel Drum Smash

See every FX chain

Try it

Try it on orOS StudioAdd it to a track in your browser, with its own interface. Nothing to install.