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首页> 外文会议>Audio Engineering Society international convention >Flexible control of the transducer and the duct resonance of a speaker system ducted to the exterior of a vehicle cabin
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Flexible control of the transducer and the duct resonance of a speaker system ducted to the exterior of a vehicle cabin

机译：灵活控制换能器，以及通过扬声器传送到车厢外部的扬声器系统的管道共振

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In order to reproduce lower frequency sound in a vehicle cabin efficiently, Zeljko Vclican proposed a speaker system, where the backside of a transducer unit communicates with the exterior of a vehicle cabin via a timed acoustic appliance. [1] Since this speaker system couples the interior and the exterior of a vehicle cabin, the efficiency and the frequency range of internal and external noise transmission are both important considerations. These two characteristics are strongly correlated with the two dominant resonances of the system. One is the mechanical resonance of the transducer which defines the lower limit of the sound reproduction frequency range. Another one is the Helmholtz resonance of the back-side acoustic appliance (enclosure and duct), which defines the frequency where, for example, noise transmission through the appliance is optimized. Choosing the appropriate acoustic parameters to balance those two dominant resonances is the key to optimal design this speaker system. But with the existing configuration [1], these two dominant acoustic resonances have strong mutual interaction via coupled design parameters, it can be difficult to find a good compromise between them. In this paper, a new speaker system configuration, consists of a transducer, an enclosure ducted to the exterior of the vehicle cabin, and a passive radiator to cover the duct, will be proposed and discussed. With this configuration, the two dominant resonances of the system can be controlled quasi-individually, therefore enhancing design flexibility for the practical use of such systems on a vehicle.
机译：为了有效地再现车厢内的较低频率声音，Zeljko vclican提出了一种扬声器系统，其中换能器单元的背面通过定时声设备与车辆舱的外部连通。 [1]由于该扬声器系统耦合车厢的内部和外部，因此内部和外部噪声传输的效率和频率范围都是重要的考虑因素。这两个特性与系统的两个主导共振密切相关。一个是换能器的机械谐振，其限定了声音再现频率范围的下限。另一个是后侧声设备（外壳和管道）的Helmholtz谐振，其定义了例如通过设备的噪声传输的频率。选择适当的声学参数来平衡这两个主导共振是最佳设计本扬声器系统的关键。但是通过现有的配置[1]，这两个主导的声学共振通过耦合设计参数具有强烈的相互作用，可能难以在它们之间找到良好的折衷。本文采用了一种新的扬声器系统配置，包括换能器，将外壳管道管道，其被提出并讨论用于覆盖管道的无源散热器。利用这种配置，可以单独地控制系统的两个主导共振，从而增强用于在车辆上的这种系统的实际使用的设计灵活性。

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