hledat obchoďák Dítě 85 db a materiál Disciplína Neštěstí
Noise that exceeds 85 decibels is harmful to human physical and mental health Stock Vector Image & Art - Alamy
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Help Protect Your Child's Hearing
The Hearing Center at Hollins Communications Research Institute - Extended exposure to sounds in excess of 85 decibels (dB) can cause hearing damage. Protect your hearing by avoiding loud situations whenever possible.
How Loud Is 70 decibels | What is a 70 dB equivalent
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New York Relay - It's amazing how quickly exposure to loud noises can damage your hearing. Check out this decibel chart that www.noisyplanet.nided.nih.gov created on how to tell how loud is too
80, 85 and 87 decibels - why these values matter | Pulsar Instruments