瞬态声品质时域传递路径方法与应用研究  

Analysis of transient sound quality in time domain transfer path method and its application

作　　者：谢小平[1] 王洪波 梁炀烊 XIE Xiaoping;WANG Hongbo;LIANG Yangyang(State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body,Hunan university,Changsha 410082,China;Shanghai Automobile Group Co.,Ltd.,Shanghai,200438,China)

机构地区：[1]湖南大学汽车车身先进设计制造国家重点实验室,长沙410082 [2]上海汽车集团股份有限公司,上海200438

出　　处：《振动与冲击》2020年第7期253-259,共7页Journal of Vibration and Shock

基　　金：国家自然科学基金重点项目(11232004);中国新能源汽车产品检测工况研究和开发项目。

摘　　要：全球化竞争日趋激烈和消费者对汽车舒适性要求越来越高,迫使各汽车公司加快了NVH开发进程,汽车声音的控制逐渐进入声品质控制阶段。创新性提出一种基于时域传递路径分析的瞬态声品质分析方法和流程。采用考虑奇异值截断的去卷积滤波器方法建立时域去卷积网络。构建了车内瞬态噪声合成模型,并在时频域上分解和分析了发动机的结构声贡献和空气声贡献。通过视听比较合成噪声和测量噪声,以评审团主观评价打分的形式来验证模型的准确性。进一步对合成噪声进行主观声品质评价,将车内噪声合成模型延伸至虚拟车内声品质预测模型。基于该模型,找到声品质贡献较大的路径,并且通过虚拟修改各路径传递函数值,来优化车内声品质,为制定车内声品质改善措施提供指导依据。The increasingly fierce global automobile market competition and consumers’higher and higher requirements for automobile comfort have forced automobile companies to speed up the development process of NVH,and automobile sound control has gradually entered the stage of sound quality control.In this paper,a transient sound quality analysis method and process based on time-domain transfer path analysis was proposed.Firstly,the time-domain deconvolution network was established by using the deconvolution filter method considering singular value truncation.Then the interior transient noise synthesis model was constructed,and the structural-borne acoustic contribution and air-borne acoustic contribution of the engine were decomposed and analyzed in time-frequency domain.Finally,through the audio-visual comparison of synthetic noise and measurement noise,in the form of subjective evaluation of the jury to verify the accuracy of the model.Furthermore,the subjective sound quality of the synthetic noise was evaluated,and the interior noise synthesis model was extended to the virtual interior sound quality prediction model.Based on this model,the paths with bigger contribution to sound quality were found,and the transfer function values of each path were virtually modified to optimize the sound quality in the vehicle,so as to provide guidance for improving the sound quality in the vehicle.

关 键 词：时域传递路径分析 去卷积滤波器 声品质分析 车内噪声 合成噪声 声贡献 

分 类 号：TB535[理学—物理]