saimox — spatial audio intelligent meta & object exchange

What it is

Discrete audio objects, placed and moved in real space.

Not a stereo bed with offset channels. Each sound is its own object with a position you can animate — rendered through HRTF, head-tracked on AirPods, with a binaural fallback for everything else.

Real objects, not offsets

Every track is a separate object in 3D — free to position and animate. No bed-plus-difference encoding.

Open & license-free

No patents, no royalties, no Dolby. A plain ZIP container with JSON metadata and open codecs.

Offline-first, codec-agnostic

Opus, FLAC, AAC or WAV. Download, unpack, play — no streaming dependency, cross-platform by design.

A format you can read in an afternoon.

A .smx file is a renamed ZIP: a manifest, a spatial map, and your audio tracks. Movements are keyframes — position, volume, distance — interpolated at 60 fps.

Full specification →

# meditation.smx (= ZIP) ├─ manifest.json ├─ spatial.json └─ tracks/ ├─ bed.caf // stereo bed ├─ bowl.opus // object └─ waves.opus // object // spatial.json — a movement { "track_id": "waves", "keyframes": [ { "time":0, "position":{"x":-1,"y":0,"z":1} }, { "time":20, "position":{"x":1,"y":0,"z":-1} } ] }

Contact

Building with saimox?

Questions about the format, integrations, or licensing — get in touch. saimox is open, and we'd love to know what you're making.

hello@saimox.com