F_POLAR

F_POLAR – Stereo Phase Correlation Visualizer with Artistic Flair
Overview:
The F_POLAR module offers a creative and informative visualization of stereo phase correlation. It displays the relationship between left and right audio channels in a stylized polar coordinate system, similar in concept to tools found in professional mastering suites like iZotope Ozone, but with enhanced aesthetic control and customization.

This module is perfect for:
Visualizing stereo width and correlation in real time
Creating dynamic and engaging visual feedback in modular performances
Exploring colorized and animated representations of audio phase interaction

Display Behavior:
At its core, the visualizer renders each stereo sample as a point in polar space (angle = stereo phase, magnitude = amplitude). Lines are drawn from the center to these points, forming an animated radial pattern.
The canvas includes:
A semicircular grid for orientation
A fading trail effect that mimics phosphorescent decay (oscilloscope-style)
Real-time correlation readout

Controls:
Control Description
Left/Right Inputs Stereo audio signals to visualize
Color Toggle (colorToggle) Enables/disables colored visualization
Color Mode Knob (colorModeKnob) Switches between color palettes:
0 = Mono
1 = Warm
2 = Cool
3 = Greyscale
4 = Psychedelic
5 = Ocean

Fade Amount (fadeKnob)
Controls transparency of drawn lines (lower = more persistent)

Trail Fade (trailFadeKnob)
Controls background fading intensity (lower = longer trails)

Hue Speed (hueSpeedKnob)
Sets hue animation speed (only when color is active)

Glow Toggle (glowToggle)

Enables a glow effect with thicker, semi-transparent lines for emphasis

Glow Amount (glowKnob)
Controls the glow's intensity and stroke thickness

Gain (gainKnob)
Adjusts input level before visualization, to scale weak or loud signals

Readout:
Correlation Indicator (top-left):
Displays a live correlation coefficient between L and R:
Green: Highly in-phase (+1.0)
Red: Strongly out-of-phase (–1.0)
Grey: Mixed/uncorrelated

Creative Uses:
Use high trail persistence and glow for dramatic audio-reactive effects
Switch between palettes for mood-matching your patch
Combine subtle gain boost and psychedelic mode for swirling, colorful textures