Use the calculator below to calculate equivalent sound level:
Room acoustics and acoustic properties, decibel A, B and C, Noise Rating (NR) curves, sound transmission, sound pressure, sound intensity and sound attenuation.
Sound pressure filters that compensates for the hearing sensed by the human ear.
Noise Criterion - NC - level is a standard uesd to describe the relative loudness of a space within a range of frequencies.
Acceptable noise - dBA - level at typical common locations.
The noise level should not exceed certain values to protect public health and welfare.
The NIOSH noise Recommended Exposure Limit - REL - for occupational noise
The EPA A-weighted sound level day and night equivalent definition - Ldn - for a 24 hour period.
The EPA Sound Exposure Level - Ls - describes the noise from a variable source.
OSHA maximum A-weighted sound pressure levels allowed per day.
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