A simple and lightweight audio visualizer for Windows. It captures any sound playing on your PC (like music from Spotify, YouTube, or games) and turns it into beautiful, real-time animations. Works both as a standalone window and as a seamless, click-through overlay on top of your screen.
- Capture Any Desktop Audio: Uses WASAPI Loopback to visualize sound from any application—no configuration needed.
- Multiple Visualization Styles: Choose from several built-in renderers: Bars, Wave, Circular Wave, Cubes, Fire, and LED Panel.
- Seamless Overlay Mode: A transparent, borderless, and click-through window that you can place over your games, desktop, or other applications.
- Real-Time Customization: Use hotkeys to change colors, styles, sensitivity, and other parameters instantly.
- High Performance: Written in C++ with Direct2D for smooth, 60 FPS hardware-accelerated rendering.
- Zero Dependencies: No need to install any third-party libraries. Just build and run.
| Key | Action |
|---|---|
| Space | Start / Stop audio capture |
| O | Toggle Overlay Mode |
| R | Switch to the next visualizer style |
| Q | Cycle through render qualities |
| Up / Down | Increase / Decrease sensitivity |
| Left / Right | Change FFT window (adjusts visuals) |
| - / + | Decrease / Increase bar count |
| S | Switch frequency scale (Linear/Log) |
| ESC | Exit the app (or exit overlay mode) |
- Audio Source: The visualizer captures sound from your default playback device. If you don't see any activity, make sure the correct device is set as default in Windows Sound settings.
- Overlay Performance: For the smoothest 60 FPS animation in overlay mode, you may need to click on your desktop or an empty area to make it the "active" window. When a fullscreen game or another application is active in the foreground, Windows may limit the visualizer's frame rate to ~30 FPS.
Requirements:
- Windows 10 or 11 (x64)
- Visual Studio 2019/2022 with the "Desktop development with C++" workload.
Steps:
- Clone this repository to your computer.
- Open the
SpectrumC++.slnfile in Visual Studio. - Set the configuration to Release and the platform to x64.
- Build the solution (press F5 or go to
Build>Build Solution).
The executable (SpectrumC++.exe) will be located in the x64/Release folder.
This project is licensed under the MIT License. See the LICENSE.txt file for details.