Spatial audio and multichannel sound

Place and move sounds over any loudspeaker layout, from a quad to hundreds of channels, write trajectories on a timeline, and drive spatialisation renderers over OSC and ADM-OSC. Free and open-source, on Windows, macOS, Linux and Raspberry Pi.

Download ossia score 3.9.0 Try it in your browser Read the documentation

Free and open-source (GPLv3) · Windows, macOS, Linux, Raspberry Pi and web browser

ossia score is used for acousmatic concerts, immersive rooms, sound installations and spatialised theatre. Sound sources, their positions and their movements are written on the same timeline as the rest of the piece, and can react to performers and visitors.

What you can do

Spatialise in ossia score itself: DBAP in 2D and 3D, GBAP, matrix spatialisation and quad panning, for any sound source (DBAP, GBAP, matrix).
Drive spatialisation renderers over OSC: SpatGRIS, SPAT Revolution and any ADM-OSC compatible renderer (SpatGRIS device).
Write trajectories: draw paths and multi-source movements with dedicated widgets, then automate, loop and vary them (path generator, multi-cursor).
Large loudspeaker systems: sound cards with up to 1024 channels, per-channel routing, and Faust spatialisation libraries such as ambisonics (audio routing, Faust).
Follow people and objects: drive sources from tracking systems (PosiStageNet, RTTrP, OpenTrackIO), depth cameras or any sensor.
Same timeline as the rest: video, 3D and lights stay in sync with the sound (spatial audio guide).

Spatial audio needs, and how ossia score answers them

What you need	How ossia score does it
Spatialising on an irregular loudspeaker layout	DBAP and GBAP work with speakers placed anywhere, in 2D or 3D.
Writing movements precisely in time	Trajectories and source positions are automations on the timeline.
Sounds that follow performers or visitors	Tracking systems, depth cameras and sensors drive source positions directly.
Keeping your spatialisation renderer	ossia score sends source positions and parameters over OSC and ADM-OSC.
A permanent multichannel installation	Headless mode with autoplay, on a PC or a Raspberry Pi.

See the gallery, for instance METAscène, with fifty loudspeakers of spatialised sound, three video screens and lighting run from ossia score.

Download ossia score 3.9.0 Try it in your browser Read the documentation

Free and open-source (GPLv3) · Windows, macOS, Linux, Raspberry Pi and web browser

More ways to use ossia score

Stage and music

Show control — Cues, scenes and timecode for theatre, concerts and events.
Live electronic music — Synths, drum machines, sampler, step sequencers and plug-ins, in sync with MIDI clock, timecode and visuals.
Dance and interactive theatre — Pose detection, depth cameras, sensors and tracking drive sound, video and light, inside cues and scenes.
Contemporary music and live electronics — Interactive scores that wait for the performers, cues from pedals, live processing and spatial sound.

Video and light

Video, mapping and VJing — Video playback, multi-projector mapping, shaders, 3D and NDI, synchronised with sound and light.
DMX lighting and LEDs — Art-Net, sACN and DMX USB with a fixture library, LED pixel mapping, all in sync with sound and video.
Generative art — Shaders, 3D, gaussian splats and live coding, performed live or rendered frame by frame.
Recording and streaming — Cameras, SDI, NDI and SRT in; ProRes or MP4 recording, RTMP streaming and NDI or Spout out.

Spaces and experiences

Interactive installations — Sensors, cameras and tracking, sound and video, running unattended on a PC or a Raspberry Pi.
Museums and exhibitions — Exhibits that run all day without staff, with monitoring, a staff control panel and kiosk apps.
Escape rooms and attractions — Puzzles, props and sensors driving sound, video and lights, with game logic and a game master panel.
Kinetic art and robotics — Motors, pumps and robots written on a timeline, reacting to sensors, in sync with sound, video and lights.

Tools and research

OSC, MIDI and DMX timeline — Automate any OSC, MIDI or DMX parameter on an interactive timeline, with triggers and conditions.
Visual programming — Patch audio, video and interaction with nodes and a timeline, and run your Pure Data patches.
Real-time AI — Pose detection, depth from a webcam, real-time image generation, language models and machine learning by example, run locally.
Protocol bridge — Convert between MIDI, OSC, DMX, MQTT, serial, HTTP and Bluetooth LE, with mapping and filtering, always on.
Research, sonification and biosignals — LSL, HDF5 and CSV data, sonification, biofeedback, and sessions recorded and replayed on a timeline.
Teaching and workshops — One free tool for sound, video, light, sensors and code, on every OS, in the browser and on Raspberry Pi.
Custom apps — Package a project with your own interface as an app for Windows, macOS, Linux or the web.

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