pulseviz is a small OpenGL-accelerated audio visualizer for PulseAudio written in Python. Right now it's more or less a proof of concept with little to no features.
pulseviz can be installed via pip3:
# System wide...
sudo pip3 install git+https://github.com/pckbls/pulseviz.py.git
# ...or only for the current user
pip3 install --user git+https://github.com/pckbls/pulseviz.py.gitpulseviz requires you to choose an audio source and a visualizer type:
$ pulseviz
Usage: pulseviz <source> <visualizer>
Available sources:
alsa_output.pci-0000_00_1b.0.analog-stereo.monitor
alsa_input.pci-0000_00_1b.0.analog-stereo
alsa_output.usb-VIA_Technologies_Inc._USB_Audio_Device-00.iec958-stereo.monitor
Available visualizers:
waveform
spectrum
bands
By default PulseAudio automatically creates a monitor source for each sink which can be used to visualize the audio that you are hearing.
Those sources have a .monitor suffix.
The waveform visualizer shows the raw audio signal in the time domain.
The spectrum visualizers transforms the audio signal into the frequency domain using a STFT.
The octave bands visualizer divides the frequency domain magnitudes into octave bands and displays the average magnitude of each band.
- Make visualizers configurable
- Either via command line switches...
- ...or via configuration file
- Stereo support
- Create more visually appealing visualiziations such as
- Spectrogram
- Vectroscope/Stereometer for visualizing the correlation between multiple audio channels
- Kodi's rotating 3D Spectrum visualizer.
- Shadertoy visualization
- projectM visualization
- Further improve performance
- By off-loading rendering tasks onto the GPU using shaders
- By reducing unnecessary memory copies
- Maybe by rewriting the DSP algorithms in C
- Implement a GUI
- Most likely based on GTK3
- Ship two applications
pulseviz(the original CLI version) andpulseviz-gtk
- Something for the far distant future: Support more audio sub systems and platforms.
