QAudioVisualizer

Non GPU and Low CPU usage GTK Audio Visualizer for Linux

Normal	Mirror

Normal.mp4

Mirror.mp4

How it works

1. Basically you need to get the raw output from the sound card (C does that very well).
2. Run a Fast Fourier transform
3. Then a Low-pass filter
4. Finally, some Linear interpolation to draw

Requirements

C

• Pulse Audio (libpulse)
  • Debian: sudo apt-get install lippulse0 libpulse-dev

Python

• Python 3
• Numpy (numpy)
  • pip3 install numpy
• SciPy (scipy)
  • pip3 install scipy

Compiling C Library

cd qaudio
make

Usage

./soundbars.py [-h] [--size SIZE] [--max_fps MAX_FPS] [--bars BARS] [--space SPACE] [--opacity OPACITY] [--fps] [--no_mirror]

Parameter	Description
-h, --help	show this help message and exit
--size	Window Size (default: 1600x900)
--max_fps	Max FPS
--bars	Number of bars
--space	Space Between Bars (default: 1)
--opacity	Overall Opacity (default: 0.7)
--fps, --fps_show	Show FPS
--no_mirror	Remove Mirror Effect