Phantas – A browser-based binaural strobe engine (Web Audio API)
Hi HN, I’m a new developer with Aphantasia (no mental imagery). A side effect of this is that regaining focus after a distraction takes me a long time (the "23-minute lag"). I tried standard binaural beats, but I discovered a technical flaw: streaming compression (AAC/MP3 on Spotify/YouTube) often muddies the specific phase differences required for effective entrainment. I realized that to get effective entrainment, I needed lossless audio. Since I couldn't stream lossless easily, I decided to generate it locally. I built Phantas – a browser engine that uses the Web Audio API to…
Phantas – A browser-based binaural strobe engine (Web Audio API) launched on December 28, 2025 with 28 votes, #516 of 11,628 launches that month and more than 90% of that year's launches.
In plain words
Phantas is a browser-based tool that generates binaural beats and visual strobes in real-time using the Web Audio API. It creates lossless audio through client-side sine wave generation, avoiding compression artifacts from streaming services. The tool is designed for people who need focus assistance, particularly those with aphantasia who experience extended refocus periods after distraction. It combines dual-channel audio generation with a cyan strobe visual component for brainwave entrainment.
written from the facts on this page · September 2026
From the sources
Guided sessions that help you begin, reset, settle in, or move into what comes next. No meditation required and nothing to picture.
Guided state-shifting sessions that help you move into what comes next. Start with sound and follow the guidance — no forcing focus, nothing to picture. Follow the sound and pacing. Nothing to picture, and no need to force your focus. Use the shift to begin, reset, or move forward with greater clarity. Follow the sound and pacing instead of trying to force your mind into place. No meditation practice required. No visualizing or mental imagery. Just follow the session as it unfolds. Choose a session based on what you need to do next: begin, reset, settle in, or approach something differently. Different moments ask something different from your mind. Choose by what you need to do next. The…from phantas.io
In the maker’s words, at launch
Hi HN, I’m a new developer with Aphantasia (no mental imagery). A side effect of this is that regaining focus after a distraction takes me a long time (the "23-minute lag"). I tried standard binaural beats, but I discovered a technical flaw: streaming compression (AAC/MP3 on Spotify/YouTube) often muddies…
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