Field notes

The audible clock, or: how to judge a dance contest over video call

The white paper's central idea without the maths — why we score the beat players heard, not the beat the software scheduled.

聴こえた拍で採点する——可聴クロックという考え方

ホワイトペーパーの中心概念を、数式なしで。予定された拍ではなく、 聴こえた拍で採点する理由。

Server-Certified Rhythm Performance Scoring

The full mechanism, published: the audible clock, silent calibration, drift re-centring, anti-spoof that calibration cannot blind, and the signed score. Patent pending. 日本語版もあります。

Verifying a OneDrum certified score

The signed payload, what the signature covers, and the two trust paths — for operators who want the number without trusting the device.

太鼓が呼ぶ、あなたが応える — OneDrum のご紹介

リズムの「同期」をサーバー側で認定し、署名付きのスコアとして 証明するエンジン。最初の体験 Viking Row をブラウザで。

1,234 taps later: why Android drums early

Desktop and iPhone tap centred; Android taps 51ms early. The platform-shaped hole in our timing model, and the ±120ms fix that shipped.