频率是用Hz作单位读赫兹，低频噪音是指频率在200赫兹（倍频程）以下的声音中国对低频噪音的声音频率范围订为 20~200Hz，其中对人体影响较为明显之频率，主要为 3-50Hz 之频率范围。 在人耳范围内是在20Hz--200Hz是低频，就是在一秒内震动20到200次发出无规律的声音叫做低频噪音。频率在 500Hz~2kHz为中频，而高频是2kHz~20kHz。
贾景瑞说，也可以通过安装防低频噪音隔音玻璃来减轻低频噪音。
Gujing Rui said, you can also prevent low-frequency noise by installing glazed Windows to reduce low-frequency noise.
气压差及镉浓度波可使噪音增大很多倍，浓度波主要增强了低频噪音。
Pressure difference and Cd concentration fluctuation may cause the noise to increase many times with the latter mainly enhancing the noise in the low frequency range.
这样可以让耳朵的神经得到锻炼，对低频噪音的伤害，有一定的消减作用。
This allows the ear nerve to be tempered, low-frequency noise damage, there is a certain subduction.
应用推荐