This paper discusses 3-D audio reproduction in virtual rooms. It includes a brief overview of the concept of a virtual room, with an emphasis on the use of sound in immersive virtual environments. Acoustical issues of the virtual room are also discussed. The different spatial sound reproduction techniques, headphone, and multichannel reproduction techniques are described. As a case study, the spatial audio reproduction system currently under construction in the virtual room of Helsinki University of Technology is presented.
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