论文部分内容阅读
1背景家电产品的噪声是其重要的性能指标之一。世界各大家电制造厂商对家电产品的噪声控制都投入大量精力进行研究。研究大致在二个方向上展开，其一是改变现有产品的结构，甚至工作原理以企图降低产品辐射的噪声。其二是在现有的产品上采用新型降噪材料如阻尼材料、隔声材料及
1 Background Noise of home appliances is one of its important performance indicators. The world’s major appliance manufacturers on the noise control of home appliances have invested a lot of energy to study. Research is generally conducted in two directions. One is to change the structure of existing products and even work in an attempt to reduce the noise emitted by the products. The second is the use of new noise-reducing materials such as damping materials, sound-insulating materials and materials on existing products