How the voices of a spatial renderer are panned.
type SpatialPanningModel = "stereo" | "equalpower" | "HRTF";
Used by SpatialAudioRenderer3D. SpatialAudioRenderer2D always uses "stereo".
"stereo": a StereoPannerNode. Left/right only, cheapest."equalpower": a PannerNode with the equal-power model. Left/right only."HRTF": a PannerNode with head-related transfer functions. Adds front/back and elevation cues. Best on headphones, most expensive. Default for 3D.