The ear's perception of the loudness of sound, commonly called sound level, is measured by the decibel (dB)scale. What is the approximate sound level in conversational speech at 1 m away from a speaker? Sound level in shouting speech at 1m from a speaker? Sound level that causes pain in the ear?

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The Answer of The ear's perception of the loudness of sound, commonly called sound level, is measured by the decibel (dB)scale. What is the approximate sound level in conversational speech at 1 m away from a speaker? Sound level in shouting speech at 1m from a speaker? Sound level that causes pain in the ear?

The Ear's Perception of the Loudness of Sound, Commonly Called