Non-Central Zone 3D Sound Field Reproduction for Multichannel System
WANG Song1, ZHANG Cong1, PENG Bo2, WANG Heng1, HU Ruimin31. School of Mathematics and Computer Science, Wuhan Polytechnic University, Wuhan 430048, Hubei, China; 2. Information Management Center, Army Logistics College, Wuhan 430035, Hubei, China; 3. National Engineering Research Center for Multimedia Software/ School of Computer, Wuhan University, Wuhan 430072, Hubei, China
The 22.2 multichannel system and its simplified system with 10-channel and 8-channel have been proposed, which brings people 3D listening experience. But these systems could only accurately reproduce sound field at a central listening point which is called sweetspot. In order to solve this problem, this paper proposes a non-central zone sound field reproduction method PVMDZ(particle velocity matching between different zones) based on the physical property of sound. The proposed method matches the physical property of sound of non-central zone in reconstructed sound field with that of central zone in original sound field, so the reproduced non-central zone would produce the same listening experience as the central zone of the original system does. By experiments, we compare the performances of the proposed method with the traditional one, and the result proves that the sound field error of proposed method is reduced.
Key words:non-central zone; sound field reproduction; multichannel system
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