Telephones in Noisy Areas

Using telephones in noisy areas - satisfactory, difficult and impossible noise levels

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Background noise interferes with telephone conversations, where

conditions are satisfactory at levels less than 65 SIL (dB) (approx. 72 dBA)
conditions are difficult at levels in the range 65 - 80 SIL (dB) (approx. 72 - 87 dBA)
conditions are impossible at levels above 80 SIL (dB) (approx. 87 dBA)

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Related Topics

Acoustics Room acoustics, acoustic properties - decibel A, B and C - Noise Rating (NR) curves, sound transmission, sound pressure, sound intensity, attenuation and more ..

Related Documents

Comparing Noise Criteria Comparing Noise Criteria - Noise Criterion (NC), Noise Rating (NR) and dB(A)
SIL - Speech Interference Levels Approximate speech interference levels

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