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FREQUENCY SHIFTER

Bode Frequency Shifter

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 Slow Phase Drift preset and without the plugin. Switch while it plays.

Controls

Shift−2000 to +2000 Hz — Amount every frequency is moved up or down, in Hz
Stereo Offset−100 to +100 Hz — Extra shift applied to the right channel only, for stereo movement
Feedback0 to 95% — Output fed back into the shifter for spiralling barber-pole sweeps
Mix0 to 100% — Dry/wet blend

Best uses

Subtle phasing and beating with small shifts
Metallic, bell-like inharmonic tones
Barber-pole rising or falling effects with Feedback
Stereo widening via Stereo Offset
Sci-fi sound design

Properties

Signal chain: Input → Hilbert Transform (two 4-stage allpass chains) → Quadrature Oscillator Mix → Feedback (DC-blocked, soft-limited) → Mix → Output. Shifts by a fixed Hz amount rather than a ratio, so harmonics become inharmonic; 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

Slow Phase Drift · Detuned Stereo Wide · Detuned Shimmer · Metallic Bells · Barber Pole Rise · Barber Pole Fall · Sci-Fi Radio

In the FX chains and Rack presets

Shift Mod

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.