Show HN: Lookas – Terminal audio visualizer that's aligned for human perception

Category: cli-tool

Tags: audio-visualizer, terminal-tool, rust, signal-processing, real-time

Score: 7.0/10 (Innovation: 7, Technical: 8, Documentation: 9, Utility: 4)

Lookas is a terminal-based audio spectrum visualizer that captures microphone or system audio, processes it using a mel-scale FFT for human-aligned perception, and renders smooth, physics-driven bars. It's interesting because it combines low-latency audio processing, perceptual frequency mapping, and spring-damper animation to create a visually stable and aesthetically intentional experience in the terminal.

Target audience: devops, backend devs, audio enthusiasts, terminal users

Repository: https://github.com/rccyx/lookas · Rust · MIT · 3 stars

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