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首页> 外文期刊>The Journal of the Acoustical Society of America >Adaptive wave field synthesis with independent radiation mode control for active sound field reproduction: Theory
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Adaptive wave field synthesis with independent radiation mode control for active sound field reproduction: Theory

机译：具有独立辐射模式控制的自适应波场合成，用于有源声场再现：理论

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摘要

Sound field reproduction finds applications in Music or audio reproduction and experimental acoustics. For audio applications, sound field reproduction can be used to artificially reproduce the spatial character of natural hearing. The general objective is then to reproduce a sound field in a real reproduction environment. Wave field synthesis (WFS) is a known open-loop technology which assumes that the reproduction environment is anechoic. For classical WFS, the room response thus reduces the quality of the physical sound field reproduction. In this paper, adaptive wave field synthesis (AWFS) is analytically investigated as an adaptive sound field reproduction system combining WFS and active control with a limited number of reproduction error sensors to compensate the response of the listening environment. The primary point of this paper is the definition of AWFS. Therefore, the fundamental behavior of AWFS is illustrated by analytical considerations and simple free-field simulation results. As demonstrated, AWFS is fundamentally related to WFS and "Ambisonics." The paper introduces independent adaptive control of sound field reproduction on the basis of radiation modes, via the singular value decomposition of the transfer impedance matrix. Possible practical independent control of radiation modes for AWFS is discussed. (c) 2006 Acoustical Society of America.
机译：声场再现可在音乐或音频再现以及实验声学中找到应用。对于音频应用，声场再现可用于人工再现自然听力的空间特征。然后，总的目的是在真实的再现环境中再现声场。波场合成（WFS）是一种已知的开环技术，它假定再现环境是无回声的。因此，对于经典WFS，房间响应会降低物理声场再现的质量。本文对自适应波场合成（AWFS）进行了分析研究，作为一种将WFS和有源控制与有限数量的再现误差传感器相结合以补偿收听环境响应的自适应声场再现系统。本文的重点是AWFS的定义。因此，AWFS的基本行为可以通过分析考虑和简单的自由场模拟结果来说明。如图所示，AWFS从根本上与WFS和“ Ambisonics”相关。本文通过传递阻抗矩阵的奇异值分解，介绍了基于辐射模式的声场再现的独立自适应控制。讨论了可能的AWFS辐射模式的实际独立控制。 （c）2006年美国声学学会。

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