A real-time audio spectrum visualizer for the KDE Plasma 6 panel.
It taps a PipeWire / PulseAudio monitor source via parec, runs an FFT in a small Python daemon, and serves the resulting magnitudes over a localhost HTTP endpoint that the QML widget polls at ~30 Hz.
- Default — bars rising from the baseline, with optional blurred reflection
- Centered — bars extending symmetrically up and down from the centre
- Line — single oscilloscope-style curve, with optional CRT-glow trail
Each bar theme can be rendered as solid bars or vintage VU-style segmented blocks, and supports peak caps that float at each bar's recent maximum.
- KDE Plasma 6.0+
parec(frompulseaudio-utilsorpipewire-pulse)python3withnumpykpackagetool6
./install.shThen restart plasmashell:
systemctl --user restart plasma-plasmashell.serviceRight-click the panel → Add or Manage Widgets… → search "Wavebar".
Right-click the widget → Configure…
- General — pick the audio monitor source, number of frequency bands, widget width, sensitivity, smoothing
- Theme — theme, colours / gradient direction, bar style, peak caps, theme-specific options
The default sink's .monitor source is usually the right pick for visualising whatever is currently playing.
MIT