The Wave Field Synthesis (WFS) concept is based on physical sound field rendering within a certain listening area by means of loudspeaker arrays. The pure audio signal is combined with informations about the room and the source's position to enable the accurate reproduction of the source within its acoustical environment. So called 'Virtual Panning Spots' (VPS) are introduced to improve the rendering quality of large complex sources (e.g. 'choir') and of enveloping sound (e.g. 'atmo'), to reduce the number of transmission channels and to ensure backwards compatibility and scalability. Useful combinations of VPS and conventional or sophisticated stereophonic panning and mixing techniques will provide advanced facilities for spatial sound design. A special VPS application is proposed to allow play back of conventional multichannel mixes in a virtual high quality listening room rendered by means of WFS technologies, offering full backwards compatibility with usual loudspeaker stereophony, optimum multichannel format flexibility, as well as attractive practical benefits in the home, in the cinema, or in other applications.
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