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A METHOD TO IMPROVE THE QUALITY OF AN AUDIO SIGNAL REPRODUCED BY A COMPACT LOUDSPEAKER ARRAY IN A PRIVATE SOUND ZONE

机译:一种提高私有声区中紧凑型扬声器阵列再现的音频信号质量的方法

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Private sound zones can be generated using loudspeaker arrays and methods for beamforming. This paper addresses the problem of quality degradation of the reproduced field at the listener's position, especially in terms of deviation from the desired frequency response. A method is proposed that aims to accurately reproduce a desired signal at the listener's position while minimizing the acoustic energy density in the so-called quiet zones. This method is compared against the Delay-and-Sum beamformer and the Pressure-Matching Method by means of numerical simulations under free-field conditions. Results show that the proposed method allows for accurate reconstruction of the signal at the listener's position. The effects on the directivity of the array radiation pattern are analyzed and discussed.
机译:可以使用扬声器阵列和波束成形方法生成私有声区。本文解决了听众地位上再现场的质量退化问题,特别是在与所需频率响应的偏差方面。提出了一种方法,其旨在精确地在收听者的位置再现所需信号,同时最小化所谓的安静区域中的声学能量密度。通过在自由场条件下通过数值模拟比较该方法与延迟和和波束形成器和压力匹配方法进行比较。结果表明,该方法允许精确地重建听众位置处的信号。分析并讨论了对阵列辐射模式的方向性的影响。

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