LakoTone EQ — Parametric Equalizer

Privacy-friendly parametric equalizer with live spectrum, per-tab audio control, and reusable presets.

LakoTone EQ gives you precise visual control over audio playing in your browser. Adjust the sound of the current tab with an 11-filter parametric equalizer, inspect the live frequency spectrum, control the master gain, and save reusable sound presets. Features: • 11 adjustable filters covering deep bass through upper treble • Live frequency spectrum visualization • Master gain control • Built-in bass boost • Custom presets with JSON import and export • Simultaneous control of multiple processed tabs • Optional experimental Smart Tune • Personal on-device ML training from listening preferences • Local audio processing with no analytics or account required Smart Tune analyses short spectrum and signal-level measurements directly on the device and adapts the equalizer around a stable speaker-reference curve. Users may optionally train a personal model from their preferred EQ settings. Training examples contain only numerical audio features and equalizer settings; audio itself is never recorded or uploaded. Audio capture begins only after the user explicitly allows equalization for a tab. The selected tab’s title, URL, and audio stream are used only to provide local equalization and active-tab controls. Audio is not recorded, retained, or sent to the developer. Presets and personal model data are stored using Chrome extension storage. Users can stop audio processing or delete personal training data at any time. Privacy policy: https://lakomoor.github.io/lakotone-eq-chrome/privacy-policy.html Source code: https://github.com/LakoMoor/lakotone-eq-chrome