BEAMGRID

A JUCE-based VST3 / AU spectrum analyzer with a fully black UI, teal accents, and a configurable display.

Screenshots

Features

Three display modes (MODE knob):
- BARS — classic log-spaced spectrum bars with peak-hold caps.
- SPECTRUM — a smooth (quadratic-spline) waveform trace of the spectrum, with a matching smooth peak-hold wave. Use the SMOOTH knob to go from raw/edgy to heavily smoothed.
- LED — an LED-meter style view (LEDS knob sets LEDs per bar).
Frequency range fixed to 20 Hz – 20 kHz.
HUE knob rotates the hue of every UI accent (knob arcs, peaks, title) without altering the underlying data.
UI scaling dropdown (75% – 300%) in the top-right.
Per-project size & scale persistence (stored in the plugin state).

Parameters

Knob	Range	Description
PEAK GRACE	0 – 2000 ms	Grace period before a peak-hold marker decays
PEAK FALLOFF	0 – 1	Peak-hold decay rate
BAR FALLOFF	0 – 1	Spectrum bar release speed
BARS	8 / 16 / 32 / 64 / 128	Number of spectrum bands (snaps)
HUE	0 – 1	Rotates the UI accent hue (0.5 = no change)
MODE	1 / 2 / 3	BARS / SPECTRUM / LED
LEDS	4 – 48	LEDs per bar in LED mode
SMOOTH	0 – 1	Waveform smoothing amount in SPECTRUM mode
GRID	0 – 1	Grid (frequency/level) visibility / brightness
ZOOM	98.0% – 102.0%	Grid zoom about the plot centre
GRID FADE	0 – 1	Fades inner grid lines; outer border stays
CURVING	0 – 1	LED corner radius (0 = square, 1 = rounded)
TILT	-1 – 1	Spectral tilt: + boosts highs / cuts lows, - does the reverse (0 = flat)
BOOST	0.75 – 2.5	Global display level multiplier (1.0 = unity)
3D	0 – 1	Pseudo-3D bevel/shading on bars, LEDs, peaks and curve (0 = flat)
G-ANG	-180 – 180	Gradient angle for the 3D shading (0 = top-lit, +/-90 = side-lit)

Building

Requires CMake (>= 3.22) and a JUCE-supported toolchain (Xcode / clang on macOS, MSVC / GCC on Windows, etc.). JUCE is fetched automatically by CMake.

cmake -B build -G Ninja
cmake --build build --config Release

The built plugins are installed to your system plugin folders:

build/BEAMGRID_artefacts/Release/VST3/BEAMGRID.vst3
build/BEAMGRID_artefacts/Release/AU/BEAMGRID.component

Then rescan in your DAW (FL Studio, REAPER, Logic, etc.).

Project layout

Source/
  PluginProcessor.cpp/.h   Audio processor + parameter layout
  PluginEditor.cpp/.h      Editor UI, knobs, layout
  Analyser.h/.cpp          FFT analysis, banding, peak-hold
  AnalyserComponent.h      Drawing (BARS / SPECTRUM / LED)
  BeamgridLookAndFeel.h    Black/teal styling, hue rotation, rotary drawing

License

See the repository license file.

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