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次声波的基本概念 次声波系指频率低于20Hz的振动,经空气介质传播到人们的听觉器官,不能产生声音感觉的一种机械波,是人们在日常生活和生产活动中经常接触到的一种物理因素。 近年来次声已开始为人们所认识并引起了重视。在工业生产中,次声可以说是普遍存在着的,如冶金企业中的冶炼,电力中的电机转子,交通部门的各种类型的汽车、推土机、地下电车、电气列车以及舰艇等在行驶过程中均能产生次声。工业
The basic concept of infrasound The infrasound refers to the frequency below 20Hz vibration, the air medium to people’s hearing organs, can not produce the sound of a mechanical wave is that people in daily life and production activities are often exposed to a physical factor . In recent years, the infrasound has started to be recognized by the people and attracted great attention. In industrial production, infrasound can be said to be ubiquitous, such as smelting in metallurgical enterprises, motor rotors in electric power, various types of vehicles in the transportation sector, bulldozers, underground trains, electric trains, and naval vessels during driving Can produce infrasound. industry