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交通环境噪声测试与控制技术 一、成果简介 1.物体发声特性分析 确定振动物体发声特性及抑制声发射的减振降噪机理。 (1)各种典型的机械结构件 (梁 /板 )的发声机理 ,发声特性及其降噪方法。 (2)车内 /飞机座舱内典型环境下的声场及传播特性 ; (3)声源 (包
Traffic environment noise test and control technology I. Introduction to the achievements 1. Object sound characteristics analysis to determine the vibration characteristics of the vibration object and inhibit the vibration and noise reduction mechanism of acoustic emission. (1) various typical mechanical structure (beam / board) sound mechanism, sound characteristics and noise reduction methods. (2) Sound field and propagation characteristics in a typical environment inside a car / airplane cockpit; (3) Sound source