I built this Toneboard a few months ago to use in lieu of cherrypicking youtube videos.
Fully open source: https://github.com/1ps0/binaural
I've been using the binaural audio standing-wave trick for some years now, particularly the rendered 40hz (400hz/440hz) to clear my head.
This is part of taking my own path towards small-scale tooling. I built it out as part of learning how to do an AI-first project with strong discipline.
The core idea is a series of togglable tones that have practical effect, especially with headphones. The Toneboard makes them composable, with quick access and controls.
I designed it to be an offline-first, framework-less, frequency generator leveraging WebAudio. I usually run it from local file, but I recently got it working on Firefox through the published site, due to hosting under my own domain.
The page has a basic explainer and howto for best effect.
Lots of ways to expand the project still, but this is how its stabilized for now.
FYI: This is still a 95%-done project with various little quirks and issues. I've made note of what I've found so far in the ROADMAP, but feedback is welcome (see GH Issues).
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