聲振耦合技術於汽車NVH設計之應用

Applications of Vibration-Acoustics Coupling Technology in Vehicle NVH Design

吳孝文(Hsiao-Wen Wu) ； 王敬仁(Dave Wang)

《中華民國振動與噪音工程學會論文集》 2013 (2013/06) Pp. 1-5

摘要

本文將以結合聲音及振動量測的聲振耦合技術進行車體噪音問題的改善，這項技術不僅能快速找出車體噪音來源，並可以從聲音品質的角度進行調校，進而提升乘坐的舒適度。文中將以引擎噪音以及車體共鳴音兩個案例，分別描述聲振耦合技術在解決噪音問題及提高車艙聲音品質這兩種工作上應用。本文將以SenSound處理麥克風陣列的測量結果，透過重構聲音、聲強以及粒子速度提供快速與精準的聲源定位。並藉由Head acoustics聲音品質評價系統及Polytec雷射都卜勒振動儀來達成聲振耦合技術，進而解決噪音問題並提高車輛的聲音品質。

關鍵字

聲振耦合 ； 聲音品質

並列摘要

This article applies the combination of sound and vibration measurement, which is called the vibration-acoustics coupling technology to improve the automotive noise. This technique can not only quickly identify the noise source in a car, but also can provide an insight to improve the sound quality and thus increases ride comfort. Two cases are described in the article to show how to solve the problem of the engine noise and car body resonant as well as the improvement in ride quality. SenSound is used for reconstruction of the sound measured by a microphone array, which provides the 3D illustrations of sound intensity and particle velocity distributions. Such information can accurately determine the location of the sound source, as well as provide more insights to the problem. The other application of vibration-acoustics coupling technology is to combine the Head acoustics sound quality evaluation system and the Polytec laser Doppler vibrometer. It can not only solve the noise problem, but also improve the sound quality of the vehicle.

並列關鍵字

Vibration-Acoustics Coupling technology ； Sound Quality ； NVH