人与声音有密切的关系,声音是我们社会生活中不可缺少的一种重要环境因素。人们在劳动之余听听轻音乐,可以恢复疲劳;海浪柔和的拍岸声,细雨的淅沥、溪流的潺潺、树叶的沙沙,使人赏心悦耳、安逸、舒坦。但是,要是飞机、火车、机器声、汽车喇叭声,不分昼夜地无限度地鸣叫,那就不仅会妨碍人们的休息,而且会影响语言通讯和 There is a close relationship between man and voice, and sound is an indispensable environmental factor in our social life. When people listen to light music in their spare time, they can recover their fatigue. The soft waves of the waves, the pattering of rain, the gurgling streams and the rustling leaves make people enjoy their sleep, comfort and comfort. However, if airplanes, trains, machine sounds, horn trumpets, and unlimited hours of day and night tweet, it will not only hinder people’s rest, but also affect language communication and