55 decibels is a sound level that is almost 18 times louder than a soft whisper (30 dB) and 180 times louder than a leaf rustling (10 dB). However, it is also 18 times softer or less loud than an average rock concert, a lawnmower, or a scream (90-110 dB).

2024年8月22日 · How Loud Is 55 Decibels? If an item has a noise level of 55 dB, it sounds like a hairdryer, electric fan, running refrigerator, or peaceful street. Generally, 55 decibels is considered a safe noise level to be exposed to for a long time.

55分贝相当于台式电脑主机运行的声音。 据了解，当声音超过50分贝，一般人就会有不舒适感，75分贝已经是人体耳朵舒适度的上限，长期置身于80分贝的环境下将会对耳朵造成伤害。

Note: dBA = Decibels, A weighted Decibel Level Comparison Chart Environmental Noise dBA Jet engine at 100’ 140 Pain Begins 125 Pneumatic chipper at ear 120 ... Household refrigerator 55 Suburban area at night 40 Whisper 25 Quiet natural area with no wind 20 Threshold of hearing 0 . Title: Microsoft Word - E1ECEEFE.doc

A计权声级是模拟人耳对55dB以下低强度噪声的频率特性，B权计声级是模拟55dB到85dB的中等强度噪声的频率特性，C计权声级是模拟高强度噪声的频率特性。 三者的主要差别是对噪声低频成分的衰减程度，A衰减最多，B次之，C最少。 A计权声级由于其特性曲线接近于人耳的听感特性，因此是目前世界上噪声测量中应用最广泛的一种，许多与噪声有关的国家规范都是按A声级作为指标的。 噪音的 db和dba有什么区别dba是采用A声级进行计量的声压级的单位。 dB是声功率的单 …

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.

Sounds above 80 dB and up to 110 dB are considered very loud. The general rule is that all sound levels exceeding 85 decibels are not only very loud, but also harmful to human hearing and potentially dangerous. Specialists recommend you use hearing protection whenever you are exposed to sounds above 85 dB. Common examples of 80-110 dB sounds ...

根据所使用的计权网不同，分别称为A声级、B声级和C声级，单位记作dB (A)、dB (B)、dB (C)。 A计权声级是模拟人耳对55dB以下低强度噪声的频率特性，B权计声级是模拟55dB到85dB的中等强度噪声的频率特性，C计权声级是模拟高强度噪声的频率特性。 三者的主要差别是对噪声低频成分的衰减程度，A衰减最多，B次之，C最少。 A计权声级由于其特性曲线接近于人耳的听感特性，因此是目前世界上噪声测量中应用最广泛的一种，许多与噪声有关的国家规范都是按A声级作为 …

2024年2月15日 · Is the whole concept of decibels (dB) foreign to you? Do you have a vague idea that more dB equals a louder sound, but no clue about what a decibel is or how many you want out of your car’s sound system? We’re here to help. In this article, we’ll explain exactly what a decibel is, and what levels of dB correspond to which real-world sounds.

2025年1月7日 · In office environments, the recommended sound level is generally around 55 dB. At this level, productivity can be maintained without distraction. Higher sound levels can affect focus and create discomfort. Collaborative Areas: Sound should be managed between 60 and 70 dB to promote interaction without becoming overwhelming.