Don't just play to the crowd.
Play through the crowd.
ourchor.us transforms smartphones and everyday connected devices into a massive, decentralized, phase-aligned acoustic array. By converting the audience into the signal chain, sound is no longer broadcast from the stage—it moves through the space itself.
Communication Through Participation
Connect. Converge. Cohere.
Sound is physical. When scattered, it is just noise. When aligned, it is a movement.
Traditional concerts and sound systems blast acoustic energy from fixed points in space, creating uneven listening zones and passive spectators.
ourchor.us uses precise acoustic physics to bend, focus, and synchronize audio across dozens, hundreds, or thousands of distributed nodes. Individual fragments converge in the air to create a shared, immersive sweet spot and collective amazement.
“Like a canyon carved by tiny raindrops, our strength is not in the singular — it is the awe of arriving together. A thousand quiet pulses, combining into a force of nature.”
Technical Architecture
How the Chorus Array Operates
1. Sub-Millisecond SNTP Sync
Nodes exchange 4-timestamp SNTP burst packets over WebSockets and HTTP to calculate precise network round-trip times and clock drift, synchronizing distributed audio hardware clocks to within 1 millisecond.
2. Acoustic Radar Ranging
Tukey-windowed FMCW chirps and normalized matched-filter cross-correlation calculate acoustic time-of-flight between devices (343 m/s), building a 2D mesh of physical node coordinates in real time.
3. Delay-and-Sum Phase Alignment
Individual audio buffers are scheduled with calculated microsecond spatial delay vectors. Constructive phase interference converges sound across the physical space to steer focal points, orbiting sweeps, traveling wave ripples, and granular acoustic scatter.
No Downloads. No Logins. No Surveillance.
Connect. Converge. Cohere.
ourchor.us is designed as a frictionless web instrument. There is zero installation footprint, no app store gatekeepers, and no user tracking cookies. Audio runs purely through transient browser memory and vanishes the millisecond it plays.
🎙️ Why the Microphone Prompt?
- ✔Local Ranging Only: Acts strictly as a physical radar sensor to detect calibration chirp arrival times. Zero speech or ambient room audio is ever captured or uploaded.
- ✔In-Memory Calibration: Delay data is calculated in-flight on the device and immediately discarded.
- ✔Close to Kill: Closing the browser tab instantly terminates all sensor access and drops the node from the network.
“The network leaves no residue, stores no artifacts, and holds no persistent state. When the tab shuts, there is no database, no history, and no trail.”
Activation Formats
Where ourchor.us is Deployed
Concerts & Stadiums
Transform arena audiences into synchronized surround-sound choral movements and spatial counter-melodies.
Art Installations
Museum and gallery soundscapes that dynamically morph and evolve as visitors move through the exhibition space.
Immersive Theater
Whispers, sound effects, and musical motifs that travel physically across the room from seat to seat.
Site-Specific Sound
Outdoor festivals, acoustic interventions, and public parks turning gathered communities into harmonic soundfields.
Bring ourchor.us to Your Event or Project
We collaborate with composers, sound artists, festival directors, and cultural venues worldwide to design custom spatial acoustic performances.