Noise “R” Us: The evolution of noisy toys
Twenty Thousand Hertz
Children's Ears Are Just as Often Damaged as Adults Do
The National Institute of Occupational Health and Safety regulates how loud toys can be. Toys cannot produce a sound that reaches more than 85 decibels from 30 centimeters or about one foot. That's approximately the same noise level as a busy restaurant or a semi-truck passing by.
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