SpatGRIS
Groupe de Recherche en Immersion Spatiale (GRIS), Université de Montréal
SpatGRIS is a free, open-source multichannel spatialisation server developed at Université de Montréal that supports up to 256 inputs and 256 outputs in five spatialisation modes: DOME (VBAP for speaker domes), CUBE (MBAP for non-dome layouts), HYBRID (mixed DOME / CUBE per source), BINAURAL (HRTF-based headphone monitoring), and STEREO. Distributed together with ControlGRIS — a companion plug-in (AAX / AU / VST3) that builds spatial trajectories inside the user's DAW and sends them to SpatGRIS
History & Background
Developed by the Groupe de Recherche en Immersion Spatiale (GRIS) under Robert Normandeau at the Université de Montréal, in partnership with the Société des Arts Technologiques (SAT). The current major version is SpatGRIS 4 (with ControlGRIS 2 and SpeakerView 1), grouped in a single installer; the ecosystem replaces SpatGRIS 3 as of January 2026. Source code on GitHub (GRIS-UdeM/SpatGRIS).