Downloads
Visu is fully functional in black-and-white (no licence needed).
You can try it without restrictions and see how it works for you.
If you find it useful, you can get a licence to unlock colour maps.
VISU
Visu is a real-time spectrogram plugin for audio analysis and visualisation.
A spectrogram displays how the frequency content of a signal changes over time, with amplitude represented by colour. Think of it as an audio X-ray, useful for spotting transients, analyzing pitch and harmonics, detecting unwanted noise, and tracking how a sound evolves.
Alongside a classic spectrogram mode, Visu includes an enhanced mode with greater precision in both time and frequency. It uses time-frequency reassignment (a technique that relocates energy to its most accurate position using phase information) resulting in sharper transients, clearer pitches, and a more detailed image.
Key Features
- Classic and Enhanced spectrogram modes
- Freeze and PNG export
- HiDPI support
- Linear, Log, Mel, Bark, and ERB frequency scales
- Optional piano keyboard on the frequency ruler
- Auto Pause function (sync to host playhead)
- Customizable Frequency range
- Adjustable FFT size
- Scroll or Static draw modes
- Speed control
- Frequency readout
- Completely usable free version (black & white)
- 40+ colour maps (colour-blind friendly)
Documentation
Check out the manual page for more details, features, and screenshots.
Requirements
- Windows 10/11, and a VST3 host or Pro Tools.
- macOS 10.15 or later (Intel and ARM), and an Audio Units host, VST3 host, or Pro Tools.
