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# Prism
<div align="center">
A free, open-source audio visualizer and meter rack for your desktop.
<img src="assets/prism-badge.png" alt="Prism" width="440">
A free, open-source audio visualizer and meter rack for your desktop and your DAW.
![code size](https://img.shields.io/github/languages/code-size/Boof2015/prism)
![GitHub Release](https://img.shields.io/github/v/release/Boof2015/prism?include_prereleases)
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![GitHub Actions Workflow Status](https://img.shields.io/github/actions/workflow/status/Boof2015/prism/main.yml)
![GitHub Downloads (all assets, all releases)](https://img.shields.io/github/downloads/boof2015/prism/total)
</div>
Prism taps into your system audio and runs it through a rack of real-time scopes and meters. It grew out of the visualization engine in [Astra](https://github.com/Boof2015/astra), rebuilt as a standalone tool. Whether you're mixing a track, tuning a room, or just like watching your music, Prism gives you a window into what you're hearing.
## Scopes
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Every scope is independently configurable. Drag and resize them into whatever layout makes sense, pop any scope out into its own window, and pin windows on top so they stay visible while you work.
## DAW Plugins
Every Prism scope also ships as a DAW plugin. Drop a **Spectrum**, **Oscilloscope**, **Vectorscope**, **Spectrogram**, **VU Meter**, **Loudness Meter**, or **Waveform** onto any track and it analyzes that track's audio in real time, the same analysis engine and the same interface as the desktop app.
- **VST3** on Windows, macOS, and Linux, plus **AU** on macOS.
- Each instance is fully configurable, and its settings save with your project.
- Plugins follow your active Prism theme and profile, so they match the desktop app out of the box.
- Audio passes through untouched. No DSP runs on the realtime audio thread.
Tested in Ableton Live, FL Studio, and Reaper. The plugins install alongside the desktop app, so there's no separate download.
## Audio Capture
Prism pulls audio at the OS level, straight from CoreAudio on macOS, WASAPI on Windows, or PulseAudio on Linux. No virtual cables or routing hacks. Flip on device input mode when you want to analyze a mic or a line-in instead.
@@ -84,6 +99,9 @@ helper that installs them to `$HOME/.vst3` by default. The AppImage is app-only;
it does not install DAW plugins. DAWs commonly scan `$HOME/.vst3`, `/usr/lib/vst3`,
and `/usr/local/lib/vst3`.
The DAW plugins build with CMake from the [`plugin/`](plugin/) directory. See
[`plugin/README.md`](plugin/README.md) for the per-platform build and install steps.
## Astra Integration
If you use [Astra](https://github.com/Boof2015/astra), Prism can connect to its local API to show what's playing, cover art, track info, and playback controls, alongside your scopes.