https://github.com/diqezit/spectrumnet

Spectrum Visualiser. This is a real-time audio visualization application that captures audio from the system's loopback device and displays it visual as a spectrum analyzer. More colors and renderers.
https://github.com/diqezit/spectrumnet

audio-visualizer charp charp-code custom-visualization fft-algorithm naudio net overlay overlay-window sdk skia skia-canvas skiasharp spectrum spectrum-analyzer theme theme-support visualization

Last synced: 5 months ago
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Spectrum Visualiser. This is a real-time audio visualization application that captures audio from the system's loopback device and displays it visual as a spectrum analyzer. More colors and renderers.

• Host: GitHub
• URL: https://github.com/diqezit/spectrumnet
• Owner: diqezit
• Created: 2024-11-19T12:10:40.000Z (over 1 year ago)
• Default Branch: master
• Last Pushed: 2025-12-22T18:28:23.000Z (5 months ago)
• Last Synced: 2025-12-22T18:43:52.572Z (5 months ago)
• Topics: audio-visualizer, charp, charp-code, custom-visualization, fft-algorithm, naudio, net, overlay, overlay-window, sdk, skia, skia-canvas, skiasharp, spectrum, spectrum-analyzer, theme, theme-support, visualization
• Language: C#
• Homepage:
• Size: 2.61 MB
• Stars: 17
• Watchers: 1
• Forks: 0
• Open Issues: 1
• Metadata Files:
  • Readme: README.md

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README

          
# SpectrumNet — Real-Time Audio Spectrum Visualizer

[![MIT License](https://img.shields.io/badge/License-MIT-blue.svg)](LICENSE)

[![.NET 8.0](https://img.shields.io/badge/.NET-8.0-purple.svg)](https://dotnet.microsoft.com)

**SpectrumNet** is a Windows audio visualizer that renders real-time spectrum effects from system audio. Built with C#, WPF, and .NET 8, it uses a SkiaSharp-based renderer pipeline with shared object pooling and centralized spectrum processing.

![Intro](https://github.com/user-attachments/assets/82777947-28cb-4d22-a9e3-166294801efb)

## Native C++ version

For maximum performance and a smaller footprint, there is a native C++ version: **[SpectrumCpp](https://github.com/diqezit/SpectrumCpp)** (Win32 + Direct2D).

## Features

### Audio

- Real-time system audio capture (WASAPI loopback).

- FFT-based spectrum analysis (windowing via **FftSharp.Windows**).

- Configurable sensitivity/range and smoothing.

### Visualization

- 25+ renderers (bars, waves, particles, grids, etc.).

- Quality presets (Low/Medium/High) with adaptive advanced effects.

- Shared object pooling for **SKPaint/SKPath** across renderers to reduce allocations.

- Integrated performance metrics and FPS limiting.

### UI / Controls

- Window mode and overlay mode (always-on-top).

- Hotkeys for common actions (Space, Ctrl+O, Ctrl+P).

- Themes/styles with persistence and instant save on theme change.

- Control panel improvements (Grid overlay instead of Popup) and StereoMode selector.

## Screenshots

| Control Panel | Animations | Themes |

| :---: | :---: | :---: |

| ![panel1](https://github.com/user-attachments/assets/bc27de70-c278-4add-9483-bcaa9583c6d7) | ![anim1](https://github.com/user-attachments/assets/2feb61b0-cadf-47be-8a50-47ecf20e1c75) | ![theme1](https://github.com/user-attachments/assets/bab7b8a7-266a-4bb1-b82f-3e229b0485e6) |

## Getting started

1. Download the latest build from the [Releases](https://github.com/diqezit/SpectrumNet/releases) page.

2. Unzip and run `SpectrumNet.exe`.

3. Click **Start Capture** to begin.

4. Hotkeys:

   - `Space`: Start/Stop visualization.

   - `O`: Toggle overlay mode.

   - `P`: Toggle control panel.

## Building from source

### Prerequisites

- Visual Studio 2022

- .NET 8.0 SDK

### Steps

```bash

git clone https://github.com/diqezit/SpectrumNet.git