Objective evaluation of interior sound quality in passenger cars during acceleration
Objective evaluation of interior sound quality in passenger cars during acceleration
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DOI：
10.1016/j.jsv.2007.07.073
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发表时间：
2008-02-05
影响因子：
4.7
通讯作者：
Lee, Sang-Kwon
中科院分区：
文献类型：
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作者：
Lee, Sang-Kwon
当驾驶客车时，驾驶员可以听到车内的各种声音。其中，轰鸣声和隆隆声被归类为乘汽车的主导声音特征。因此，需要一个客观评价这两种声音质量的声音质量指数，本文利用人工神经网络（ANN）开发了该指数。在整个研究过程中，发现隆隆声和隆隆声与响度、尖锐度和粗糙度有效相关，而波动强度与这些声音无关。这些主观参数是心理声学中的声音度量，并用作ANN的输入。对于ANN的训练过程，参考乘汽车的声音特性，合成了150个具有各种主观率的蓬勃发展的音质的内部声音和150个具有隆隆声音质的内部声音。另外16辆乘用汽车车内噪声是通过测量获得的。这些内部声音的隆隆声品质的主观评价，由21人的人工神经网络的目标。经过训练后，该人工神经网络的两个输出的隆隆声指数和隆隆声指数，分别使用。这些输出在16辆乘用汽车内部测量的内部声音的声音质量的评估中进行测试。用这两个评价指标对30辆乘汽车的偏好率进行了评价。这些指标也被成功地应用于提高车内声品质的发展乘用车。(c)2007爱思唯尔有限公司保留所有权利。
While driving a passenger car, a driver can hear many sorts of sounds inside the car. Among them, the booming and rumbling sounds are classified as the dominant sound characteristics of passenger cars. A sound quality index evaluating the quality of these two sounds objectively is therefore required and is developed by using an artificial neural network (ANN) in the present paper. Throughout this research, the booming sound and rumbling sound were found to be effectively related to the loudness, sharpness and roughness, while the fluctuation strength is not related to these sounds. These subjective parameters are sound metrics in psychoacoustics and are used as the input of ANN. For the training process of the ANN, 150 interior sounds with booming sound quality and 150 interior sounds with rumbling sound quality of various subjective rates have been synthesized, referring to the sound characteristics of passenger cars. The other 16 interior sounds of passenger cars were obtained by measurement. The booming sound qualities and rumbling sound qualities for these interior sounds were subjectively evaluated by 21 persons for the target of the ANN. After the ANN was trained, the two outputs of this ANN were used for the booming index and rumbling index, respectively. These outputs were tested in the evaluation of the sound quality of the interior sounds which were measured inside of the 16 passenger cars. The preference rate for the 30 passenger cars was evaluated by using these two developed sound indexes. These indexes were also successfully applied to the enhancement of the interior sound quality for a developmental passenger car. (c) 2007 Elsevier Ltd. All rights reserved.