Decibels can be measured using a sound level meter, which you can now find as a smartphone app. Using this app from CDC’s National Institute for Occupational Safety and Health, you can measure the sounds around you to determine if they’re safe or if your hearing is at risk. Remember, ...
How loud is loud?Explains how listening to loud music can damage one's hearing. Suggests that young people wear earplugs when attending live rock concerts. Loud stereos; Decibels; Loudness of human speech.Current Health
To give an idea of how loud this is, a normal and civilized conversation is around 60 decibels. This is also an important reference value, halfway between the limit of audibility and the limit of pain (120 dB). Normal breathing emits 10 dB, a soft whisper 30 dB, and a relaxing rain ...
(1) Which kind of noise is not good for us? A.Ocean waves. B.Quiet sounds. C.Rainfall. D.Wind blowing. (2) According to the passage, which of the statement is TRUE? A.Very loud noise can be bad for our eyes and make us sick. B.Sounds louder than 85 decibels can't hurt ...
Decibels (abbreviated dB) are the units used to measure the relative intensity of a sound. The decibel unit of measurement is a little odd because the human ear is incredibly sensitive. The human ear can hear everything from your fingertip brushing lightly over your skin to a loud jet engine...
There are a lot of things that are doing the same thing: it is the smoke of the sky, so that the noise of high decibels can stimulate the nerves of the people. In this regard, we should think deeply. Modern society makes us live better, modern science has also fully revealed the ...
Maybe! Speaking of loud noises, we’re nearly at the end of the programme, so it’s time to find out the answer for the quiz question. I asked what percentage of people in Europe is exposed to road traffic noise levels ...
1. (of a dog, wolf, or the like) to utter a characteristic loud, prolonged, mournful cry. 2. (of a person or animal) to utter a similar cry, as in pain or rage; wail. 3. to make a sound like an animal howling: The wind howls through the trees. 4. to utter a loud laug...
Do you know how loud is too loud? Do you know NIHL(Noise induced hearing loss)?What's the decibel ex | Decibel Meter - Measure the sound around you with ease怎么样,是否值得买 | Mergeek.com
Scientists use decibels (dB) to tell people how loud a sound is. If sounds (88)___ (be) loud, the decibels go high. People over 18 years old shouldn't listen to sounds over 83 dB for more than 20 hours a week. Kids' (89)___ (ear) are still developing (发育). They can't...