A real-time audio visualizer that runs in the terminal. Built with Rust using cpal for audio capture and ratatui for rendering. A companion Swift binary handles system audio capture via ScreenCaptureKit, so you can visualize whatever’s playing on your Mac — Apple Music, Spotify, YouTube, anything.
Four visualization modes: spectrum bars with logarithmic frequency binning, a waveform plot, a zero-crossing-triggered oscilloscope, and a stereo mode that mirrors left and right channels above and below a center line. Press m to cycle through them.
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