This thesis adds a link of acoustic performance analysis in the traditional process of impeller optimization.
本文的研究是在传统的叶轮优化设计过程中添加声学性能分析的一个环节。
At he same time, muffler styles and evaluation of acoustic performance and analysis methods of acoustic characteristic are introduced detail by detail.
同时，对消声器的分类，消声性能评价以及消声特性分析方法进行了详细的说明。
The acoustic modal analysis of cavity is the important matter on vehicle NVH performance study. Identifying system mode is of importance to avoid acoustic resonance and reduce interior noise.
车室声学模态分析是汽车NVH特性研究的重要内容，识别系统模态对避免声学共振、降低车内噪声有重要意义。
In this paper, the theoretical study and experimental analysis for industrial muffler are conducted. The acoustic performance of the expansion muffler is acquired by analysis and experiment.
对某工业消声器进行了理论研究和实验分析，通过分析试验得到这类消声器的消声特性，指出在实际中，此类消声器声波不是严格按照一维平面波形式传播。
In this paper, the theoretical study and experimental analysis for industrial muffler are conducted. The acoustic performance of the expansion muffler is acquired by analysis and experiment.
对某工业消声器进行了理论研究和实验分析，通过分析试验得到这类消声器的消声特性，指出在实际中，此类消声器声波不是严格按照一维平面波形式传播。
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