Voice Level and Distance

Sponsored Links

Talking with a normal voice approximate to a sound pressure level of 70 dB, a raised voice to 76 dB, a very loud voice to 82 dB and a shouting voice to 88 dB (1 ft distance).

For every doubling of the distance from the noise source the sound pressure levels will be reduced by 6 decibels. This may be expressed like:

In social situations people often talk with normal voice levels at distances of 1 to 4 meters. In such cases the noise level should not exceed 55 to 60 dB(A).

In outdoor play and recreational areas, people often communicate with a raised or very loud voice at distances of 5 to 10 meters. In such cases background noise should not exceed 45 to 55 dB(A).

Sponsored Links

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

• Abatement and Distance from Source - The disruption of sound pressures waves which reduces the noise is called attenuation - Sound Pressure Level Calculator
• Inverse Square Law - For every doubling of the distance from the noise source, the sound pressure levels - L_p, will be reduced by 6 decibels
• Propagation of Sound Outdoors - Outdoor propagation of sound - distance and attenuation