VIRTUAL GAIN FOR AUDIO WINDOWS

Audio windowing is a front-end, or user interface, to an audio system with a real-time spatial sound back end. Complementing directionalizat ion by a digital signal processor (DSP), gain adjustment is used to co ntrol the volume of the various mixels ([sound] mixing elements). Virt ual gain can be synthesized from components derived from collective ic onic size, mutual distance,orientation and directivity, and selectivel y enabled according to room-wise partitioning of sources across sinks. This paper describes a derivation of virtual gain, and outlines the d eployment of these expressions in an audio windowing system.