CONVOLUTION

Listen

Controls

• SourceSmall Room / Large Room / Hall / Plate / Cathedral / IR File — Built-in generated IR (Small Room, Large Room, Hall, Plate, Cathedral) or IR File
• IR FileWAV file in REAPER/Data/null_jsfx_ir — WAV impulse response loaded from REAPER’s Data/null_jsfx_ir folder (used when Source = IR File)
• Length10 to 100% — Trims the IR length
• Pre-Delay0 to 200 ms — Shifts the IR later in time
• Low Cut20 to 1000 Hz — One-pole low cut on the wet signal
• High Cut1000 to 20000 Hz — One-pole high cut on the wet signal
• Mix0 to 100% — Dry/wet blend
• Output−24 to +12 dB — Final output level

Best uses

• Realistic rooms, halls and plates
• Load your own IRs of spaces or devices
• Guitar cabinet IRs via IR File
• Short ambience on drums and vocals
• Cathedral-scale tails

Properties

Signal chain: Input → Uniformly Partitioned FFT Convolution (1024-sample blocks) → Low Cut → High Cut → Mix → Output. Latency 1024 samples (reported to REAPER); custom IRs are WAV files placed in REAPER’s Data/null_jsfx_ir folder, resampled, level-normalised and limited to 3 s, stereo IRs per channel.

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

Vocal Plate · Drum Room · Large Live Room · Concert Hall Strings · Short Vocal Ambience · Snare Plate · Piano Hall · Cathedral Wash

Try it