= 36 dB
The sound pressure level at distance 80 ft can be calculated as
Lp2 = (134 dB) - (36 dB)
= 98 dB
Use the calculator below to calculate the sound pressure level at distance.
The noise from a machine in distance 1 m is measured to 110 dB. The noise reduction due to the inverse square law to a working area at distance 5 m can be calculated as
dL = 20 log ((5 m) / (1 m))
= 14 dB
The sound pressure level in the working area can be calculated as
Lp2 = (110 dB) - (14 dB)
= 96 dB
This noise level is only permitted for a limited amount of time and some action with partial barriers or enclosure of the machine should be done.
Room acoustics and acoustic properties, decibel A, B and C, Noise Rating (NR) curves, sound transmission, sound pressure, sound intensity and sound attenuation.
The rules of logarithms - log10 and loge for numbers ranging 1 to 1000.
The noise level should not exceed certain values to protect public health and welfare.
Barriers and enclosures to reduce noise sound pressure levels from machines.
Geometric dilution of light vs. distance.
Distance and perception of voice.
The disruption of the sound pressure wave and the reduction of noise is called attenuation - Sound Pressure Level vs. distance calculator.
Sound Pressure is the force of sound on a surface perpendicular to the propagation of sound.
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