60 decibels is as loud as a normal conversation between two people sitting at a distance of about one meter (3 ¼ feet). It is the average sound level of a restaurant or an office. 60 decibels is …

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). 8 times as loud as 70 dB. Serious …

2024年8月22日 · How Loud Is 60 Decibels? A typical conversation between two people seated at a distance of roughly one meter (3 and a quarter feet apart) is about 60 dB loud. It’s the typical …

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 …

2024年3月11日 · 60 dB is about as loud as a conversation between two people about a table length apart. Generally, an office or restaurant sound is measured at about 60 dB. But if you …

60分贝是表示声音大小的一个数值，根据声音声压来分类，目前将声音分为10分贝-100分贝不等，对于60分贝声音来说，属于中间分贝，在城市区域噪声标准中属于噪音范围内，但是具 …

60分贝等于多少级？ 噪声在0～120dB的范围内分为三级：（1）Ⅰ级（30～59dB）：可以忍受，但已有不舒适感，达到40dB时开始困扰睡眠。 （2）Ⅱ级（60～89dB）：对植物性神经系 …

2007年2月5日 · 分贝，分贝是声压级的大小单位（符号：db），声音压力每增加一倍，声压量级增加6分贝。 1分贝是人类耳朵刚刚能听到的声音，20分贝以下的声音，一般来说，我们认为它 …

17 小时之前 · The decibel scale is designed to reflect the way humans perceive sound; an increase of 10 dB represents a tenfold increase in intensity and is usually perceived as double …

2024年11月6日 · Sound levels are most commonly measured in decibels (dB), which range from barely audible to loud enough to cause physical pain. The risk of hearing loss starts at around …