Phantas

Details

External ID

46414258

Source

HN

Company

—

Product

Phantas

Website domain

phantas.io

Launched

Dec. 28, 2025

Cohort

—

Upvotes

28

Upvotes percentile

0.7185114503816794

Tags

—

Fetched at

Sept. 7, 2026, 9:25 p.m.

Updated at

Sept. 7, 2026, 9:25 p.m.

Description

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 generate raw sine waves in real-time on the client side. This ensures mathematical precision with zero compression artifacts.For audio it uses Native AudioContext for dual-oscillator generation (Left/Right channel split).For visuals I pair the audio with a 490nm Cyan strobe. The hardest part was syncing the visual flash (using requestAnimationFrame) to the audio pulse without "drift" caused by JavaScript's event loop latency.I built this primarily for myself. Subjectively, it has reduced my "ramp-up" time from ~20 minutes to about 5 minutes.I’m releasing the generator for free (no login) to see if this works for others or if it's just my specific brain chemistry. I’d love feedback on:- Audio/Visual Sync: Does the strobe feel tight on your specific browser/refresh rate?- Intensity: Are the default 14Hz flickers too aggressive?

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