write down the intensity of the sound that makes us deaf and can rupture the ear drum
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In order for us to be able to hear a sound at all, it has to be above a certain level. This level is called the auditory threshold or hearing threshold. Humans have a hearing threshold of around 0 decibels. Above this threshold, sounds with higher sound pressure levels are heard as louder noises. Sounds above 90 dB can lead to chronic hearing damage if people are exposed to them every day or all the time. Hearing becomes uncomfortable if the sound pressure level is above 110 decibels (threshold of discomfort), and it becomes painful above 130 decibels (threshold of pain).
The following list shows examples of the volume of familiar noises. Most people perceive a 10-decibel increase in volume to be “twice as loud.”
Quiet countryside: 20 dB
Quiet conversation: 40 dB
Normal conversation: 60 dB
Traffic: 80 dB
Industrial noise: 100 dB
Very loud music, for example at a rock concert or a nightclub: 120 dB
Nearby thunder: 120 dB
Jet engine: 140 dB
Sounds louder than 130 dB can cause acute hearing loss.
The following list shows examples of the volume of familiar noises. Most people perceive a 10-decibel increase in volume to be “twice as loud.”
Quiet countryside: 20 dB
Quiet conversation: 40 dB
Normal conversation: 60 dB
Traffic: 80 dB
Industrial noise: 100 dB
Very loud music, for example at a rock concert or a nightclub: 120 dB
Nearby thunder: 120 dB
Jet engine: 140 dB
Sounds louder than 130 dB can cause acute hearing loss.
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