Advanced

STEREO SCOPE

Goniometer & Correlation Meter

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

Controls

Scope Gain−12 to +24 dB — Display gain of the goniometer when Auto Gain is off.
Auto GainOff / On — Scales the goniometer to the signal level automatically.
Decay0 to 100% — Persistence: how much recent history the goniometer shows, newest samples brightest.
Integration50 to 3000 ms — Time constant of the correlation, balance and width measurement.
MonitorStereo / Mono / Side — Listen to the stereo signal, its mono sum or its side signal (the meter always reads the input).

Best uses

Checking mono compatibility and phase problems
Judging stereo width and balance while mixing and mastering
Spotting out-of-phase or swapped channels
Comparing the image of references

Properties

Pass-through (bit-exact in Stereo monitor mode). Integrated <LL>, <RR>, <LR> (one-pole, Integration time) → correlation (-1..+1), balance (dB) and width (side/mid level). Goniometer of the last 8192 samples (L/R rotated 45°), 5 s correlation history, L/R peak meters. 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

Fast Response · Slow Averaging · Quiet Source Zoom · Hot Master View · Mono Check · Side Listen

Try it

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