VAS Analyzer

VAS Analyzer v1.0

Real-time spectrum analyzer by VANDETA Audio

An FFT spectrum analyzer with a 30- or 50-band display (30-band uses ISO 1/3-octave centres, 25 Hz - 20 kHz), alongside independent Peak and RMS meters for L / R, a phase correlation meter, a stereo goniometer and a tempo-synced oscilloscope.

Technical specs:

- FFT spectrum: overlapped windows with per-bin max-hold, transient-stable at any UI frame rate

- Selectable FFT size 1024 - 16384; adjustable slope (dB/oct), smoothing and bar release

- 30 / 50 bands, adjustable floor (-30 to -90 dB), segmented LED readout with reference lines

- Peak + True-RMS meters (L / R): RMS is ~300 ms power-domain integration, independent of Peak ballistics

- OVR latch above +0.3 dBFS; selectable meter segment count and release

- Phase correlation meter (-1 to +1), computed from raw L / R sample data

- Stereo goniometer: Lissajous / Polar, adjustable persistence (dual-exponential decay) and gain

- Oscilloscope locked to host tempo (1/1, 1/2, 1/4), holds the last frame on transport stop, resizable panel

- All analysis runs off the audio thread - fully transparent, zero added latency, no coloration

VST3 & AU Formats

compatible with all major DAWs on Windows & Mac OS: