AudioVisualizer 1.1.0

AudioVisualizer

A modern WinUI 3 audio visualizer control that displays real-time audio visualization using FFT (Fast Fourier Transform) analysis. Perfect for media players, audio applications, and entertainment software on Windows.

Features

• Real-time WASAPI loopback capture with 12-band FFT analysis (log-spaced ~20 Hz–14 kHz)
• Mirrored bar layout (bass in the center, highs outward; bars grow above and below center)
• Customizable colors via WinUI theme resources, with live updates for theme and accent changes
• Paused property to pause or resume the Win2D animation
• Automatic capture rebind when the default output device changes (e.g. speakers ↔ Bluetooth)
• Smooth animations using Win2D rendering
• Responsive design that adapts to any container size
• Built for WinUI 3 on Windows 10+ (x86, x64, and ARM64)

Requirements

• Windows 10.0.17763 or later
• .NET 8.0 or later
• A WinUI 3 host app (Windows App SDK)

Installation

Nuget: https://www.nuget.org/packages/AudioVisualizer

Install via NuGet Package Manager:

dotnet add package AudioVisualizer --version 1.1.0

Or via Package Manager Console:

Install-Package AudioVisualizer -Version 1.1.0

Current stable version: 1.1.0

Quick Start

Add the visualizer to your XAML page:

<Page
    xmlns:local="using:AudioVisualizer"
    ...>
    <Grid>
        <local:AudioVisualizer
            Paused="False"
            VisualizerBackgroundBrush="Transparent"
            VisualizerBarsBrush="{ThemeResource AccentFillColorDefaultBrush}" />
    </Grid>
</Page>

The visualizer will automatically capture system audio and display the real-time visualization.

Customization

You can customize appearance and playback with these properties:

• VisualizerBackgroundBrush - Background color of the visualization area
• VisualizerBarsBrush - Color of the frequency bars (prefer a SolidColorBrush or theme resource for live accent/theme updates)
• Paused - When true, pauses the Win2D animation; when false, resumes it

Example:

<local:AudioVisualizer
    Paused="False"
    VisualizerBackgroundBrush="Black"
    VisualizerBarsBrush="Cyan" />

Audio device changes

When the default Windows output device changes, the control restarts loopback capture on the new endpoint automatically. Bars should resume within a few seconds without restarting the app.

Dependencies

This package targets net8.0-windows10.0.26100.0 and brings:

• NAudio 2.3.0
• Microsoft.Graphics.Win2D 1.4.0

License

This project is licensed under the MIT License - see the LICENSE file for details.