Noise Source Decibel Level comment; Jet take-off (at 25 meters) 150: Eardrum rupture: Aircraft carrier deck: 140 : Military jet aircraft take-off from aircraft carrier with afterburner at 50 ft (130 dB).

A noise level chart showing examples of sounds with dB levels ranging from 0 to 180 decibels. As a frame of reference, here are the decibel levels of sounds you may encounter in your everyday life.

2024年8月22日 · Most noise level charts show examples of sounds with dB levels ranging from 0 to 140 decibels or in a few cases 0 to 180 decibels. However, sound can go all the way up to 190 dB! That’s ground-shattering!

2020年6月3日 · To use this noise pollution calculator, enter the noise level in deceibels (dB) and it will automatically calculate the maximum amount of time for safe exposure. You should never expose yourself more than this displayed time to protect yourself from hearing loss.

Unsafe decibel levels of sound are those that measure above 70dB. Noise-induced hearing loss can occur overtime from frequent exposure to loud noises, including common tools and products like landscaping equipment (75 dB), food processors (95 dB), and motorcycles (100 dB).

To measure the noise level of different sounds, we use a measurement unit called the decibel (dB). It represents a sound’s intensity. To measure a sound’s frequency, we use the hertz (Hz). Each time a sound’s decibel level increases by 10, its intensity multiplies by 10. However, the decibel scale is logarithmic, not linear.

The volume (dBA) and the length of exposure to the sound will tell you how harmful the noise is. In general, the louder the noise, the less time required before hearing loss will occur. If you must be exposed to noise, it is recommended that you limit …

2022年9月26日 · A计权 (A-Weighted) 是一种用于音频测量的标准权重曲线，用于反映人耳的响应特性。声压电平源于A计权，用dbA表示，或称为A计权dB电平。A计权是广泛采用的噪声的单值评价指标，可以通过声级计测量得到。

2023年2月24日 · 分贝（dB）是一种对声音或信号强度的测量单位，而分贝A（dBA）是一种根据声音频率进行加权的分贝单位，用于测量人耳可以听到的声音的相对强度。 由于分贝A采用了加权系数，因此相对于相同的分贝级别（dB）来说，分贝A会认为更高频率的声音更响亮，低 ...

2016年10月7日 · 若噪音量增大為 95 dBA，則容許暴露量減為 4 小時，100 dBA 則為 2 小時，依此類推。 計算是否符合法規時，必須將不同噪音量的「暴露時間與其容許暴露時間之比」加總。