Average human pain threshold. 16 times as loud as 70 dB. Jet take-off (at 305 meters), use of outboard motor, power lawn mower, motorcycle, farm tractor, jackhammer, garbage truck. Boeing 707 or DC-8 aircraft at one nautical mile (6080 ft) before landing (106 dB); jet flyover at 1000 feet (103 dB); Bell J-2A helicopter at 100 ft (100 dB).

描述声音的指标有很多，如音高、音色、音量等等。其中，我们常见的“分贝（dB/decibel）”，就是用来描述声音信号的声强级的一个单位，在某些时候也可以近似地理解成描述声音大小的一个单位。

2024年8月22日 · We will show several dB level charts that show sound effects at different decibel ranges (e.g. 0 – 140 dB and 0 – 180 dB). Let’s start with the lower decibel levels (up to 140 dB). This decibel level chart shows sounds from silence at 0 …

95 dB(A) Holzfräsmaschine, Musik (Kopfhörer) 1.12468265 0.00316227766 100 dB(A) Kreissäge, Schleifhexe, Discothek 2 0,01 105 dB(A) Schlagschrauber, Formel 1-Wagen (30 m) 3.55655882 0.03162277660 ... 150 dB(A) Schmiedehammer 632.455532034 1000 160 dB(A) Geschützknall 2000 10000 O-Ringe, Rundringe und Rundschnurringe finden Sie im Oring Shop ...

分贝（dB）转换计算器。 将dB，dBm，dBW，dBV，dBmV，dBμV，dBu，dBμA，dBHz，dBSPL，dBA转换为瓦特，伏特，安培，赫兹，声压。 设置数量类型和分贝单位。 © 2025 RT | 关于 | 使用条款 | 隐私政策 | 管理Cookies. 分贝（dB）转换计算器。

Recent NIOSH studies of sound levels from weapons fires have shown that they may range from a low of 144 dB SPL for small caliber weapons such as a 0.22 caliber rifle to as high as a 172 dB SPL for a 0.357 caliber revolver. Double ear protection is recommended for shooters, combining soft, insertable earplugs and external ear muffs.

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.

3dB截止频率（也称为截止频率或-3dB频率）是指在频率响应曲线上，信号幅度下降到其最大值的0.707倍（即下降了约3分贝，简称dB）的那个频率点。 ：在3 dB 截止频率处，输出信号的幅度是输入信号幅度的约70.7%（即20*log(0.707)≈-3 dB ）。

The intensity of common sounds ranges from 0 dB to 140 dB. Looking at a decibel chart such as the one below, we can determine if those sounds are safe, potentially harmful, or outright dangerous for our ears.

了解安全分貝級別並了解如何保護您的耳朵免受大聲噪音的傷害，透過我們的指南確保您的聽力安全。