SynkEngine
A SynkEngine instrument · free · from Monday 9 November
Prism Drive — it listens to the room. Then it draws it.
Free to use in
Monday 9 November 2026 at 17:00 (Mauritius, GMT+4)
Free to use · Monday 9 November · synkengine.com/prismdrive
Free, in your browser. Allow the microphone, and seven seconds later it draws the room.
A SynkEngine instrument. Nothing to install: open synkengine.com/prismdrive in a browser, on any device with a microphone — phone, tablet, laptop, a TV with a browser — in the room where the music is playing. Allow the microphone; seven seconds later it has the room, and it draws the music live.
64 seconds, explained
The explainer: the browser bar, the microphone, the seven seconds, then the first kick. The pictures are the real page.
What you will see
Eleven pictures for the party — tube corridors, true kaleidoscopes, a hall of mirrors, three vortexes (Vortex, Maelstrom, Warp Drive), open fields. Every kick pushes the picture, a breakdown stills it, the drop lunges; the ring in the middle is the music's own waveform, live. Swipe for the next picture, shake the phone to shuffle.
For after
Four quiet worlds — Hearth (a wood fire), The Falls (a waterfall, rain on the pool), Snowfall (a winter night), 432 Hz (a drone and a mandala on the breath). Each makes its own sound, so they work in a silent room.
How it listens
Its own listening engine, on your device: a 2048-point FFT in four bands, each read against the room's own quiet and its own recent normal, so a quiet room and a loud one both draw well; beats from spectral flux; the tempo from the gaps between beats; a transient detector that answers any clear sound — a clap, a kick, a word.
What it never does
No account, no ads, no cookies, nothing leaves your device. The sound is read on the phone and thrown away — never recorded, stored or sent anywhere. The page makes zero network calls; anyone can check with ?selftest=1 on the day.
Good to know
- Dark room, volume up.
- Double-tap for fullscreen; “Add to Home Screen” works.
- The picture pulses with the beat — “Reduce flashing” is in the settings.
- Phones one to three metres from the speaker, not on the bass bin.
The dates
Field test this weekend with friends; free for everyone from Monday 9 November, 17:00 (Mauritius), at synkengine.com/prismdrive.
Key moments
- 0:00Prism Drive, a SynkEngine instrument
- 0:07Open synkengine.com/prismdrive in a browser, on any device with a microphone
- 0:14Allow the microphone: seven seconds later it has the room
- 0:21Then play your music: every kick pushes the picture, the ring is the music itself
- 0:29Eleven pictures for the party: tubes, kaleidoscopes, a hall of mirrors, three vortexes, open fields
- 0:38Four quiet worlds for after: Hearth, The Falls, Snowfall, 432 Hz
- 0:44No account, no ads, nothing leaves your device
- 0:53Dark room, volume up: free from Monday 9 November
Transcript
- 0:00Here's Prism Drive, a SynkEngine instrument. It listens to the room. Then it draws it.
- 0:07Open synkengine.com/prismdrive in a browser, on any device with a microphone.
- 0:13Tap Listen to the room, allow the microphone, and seven seconds later, it has the room.
- 0:21Then play your music. Every kick pushes the picture, and the ring in the middle is the music itself.
- 0:27Eleven pictures for the party: tubes, kaleidoscopes, a hall of mirrors, three vortexes, open fields. Swipe for the next one, or shake the phone to shuffle.
- 0:38And four quiet worlds for after: Hearth, The Falls, Snowfall, and 432 Hz.
- 0:44No account, no ads. Nothing leaves your device: the sound is read on the phone, and thrown away.
- 0:51Dark room, volume up. Free to use from Monday 9 November: synkengine.com/prismdrive.
Questions
Do I need to install anything?
No. Open synkengine.com/prismdrive in a browser on any device with a microphone: a phone, a tablet, a laptop, a TV with a browser. “Add to Home Screen” works if you want it as an icon.
What does it do with the microphone?
It reads the sound on your device, draws it, and throws it away. Nothing is recorded, stored or sent anywhere, and the page makes no network call; you can check it yourself with ?selftest=1.
What will I see?
Eleven pictures for the party (tube corridors, kaleidoscopes, a hall of mirrors, three vortexes, open fields) and four quiet worlds for after (Hearth, The Falls, Snowfall, 432 Hz). Swipe for the next picture, shake the phone to shuffle.
Does it sync several phones?
No. Prism Drive draws on the device it runs on, from the sound in the room. Playing one song on every phone in sync is SynkEngine's job, the app.
Where do I put the phone?
One to three metres from the speaker, not on the bass bin. Dark room, volume up.
I am sensitive to flashing.
The picture pulses with the beat; “Reduce flashing” is in the settings, and the four quiet worlds hardly pulse at all.
When, and how much?
Free, from Monday 9 November 2026 at 17:00 (Mauritius, GMT+4), at synkengine.com/prismdrive. A field test with friends runs this weekend.
A SynkEngine instrument · engineered with Claude
The explainer and the posters are on our channels:
SynkEngine itself: one song on every phone in the room, in sync. Android and Windows now, iPhone coming.
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