有“吃”声音的东西吗?找一只滴嗒作响的小闹钟,用棉被把它包上,怎么样?它的响声被“吃”掉了吧?玻璃棉、矿渣棉、泡沫塑料、毛毡、棉絮、加气混凝土、吸声砖……都是吸声材料。这些材料不是十分松软,就是带有小孔。声波传播到吸声材料上,就会引起小孔隙里空气和细小纤维的振动,由于摩擦等阻碍,声能被转化成了热能,声音就这样被“吃”掉了。 Do you have anything to eat or eat? Look for a small alarm clock and use a quilt to wrap it up. How about the sound of it being eaten? Glass wool, slag Cotton, foam, felt, cotton wool, aerated concrete, sound-absorbing bricks... all are sound-absorbing materials. These materials are either very loose or they have small holes. The propagation of sound waves to sound-absorbing materials can cause vibrations of air and small fibers in the small pores. Due to friction and other obstacles, sound energy is converted into heat energy and the sound is “eaten”.