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Acoustic Noise Applications

A selection of free web-based applications to assist you with your noise assessments, calculations and reporting. These applications run in your browser, so there is no installation necessary.

 

Decibel, dB and Sound Level Calculators

db calculator

Decibel Calculator
Addition and subtraction of decibels, with an explanation of how dB addition works.

ldn and lden calculator

Ldn and Lden Calculator
Calculates both the Ldn (day-night) and Lden (day-evening-night) from hourly Leq.

 

Noise at Work Calculator and Reporter

noise at work reports

The European Noise at Work Regulations and the HSE's book "Controlling Noise at Work" explain in detail the calculations that need to be made when assessing a worker's exposure to noise and what actions to take when the noise exposure levels are too high.

lepd daily noise exposure calculator

Daily Noise Exposure Calculator - LEP,d
Calculates a worker's daily exposure to noise - LEP,d - using the time spent and the sound level at each location. A report of the results can be printed. LEP,d Calculator Help

lepw weekly noise exposure calculator

Weekly Noise Exposure Calculator - LEP,w
Calculates a worker's weekly exposure to noise - LEP,w - from each day's individual daily exposure - LEP,d. A report of the results can be printed. LEP,w Calculator Help

 

Hearing Protection Calculators

hearing protector calculators

Estimating the level at the ear when wearing hearing protection. These calculators use the octave band, HML or SNR method along with your noise measurements and the attenuation figures from the hearing protector manufacturer.

hearing protection calculator - octave band method

Hearing Protection Calculator - Octave Band Method
Calculates the sound level at the ear when wearing hearing protectors. This calculator uses the Octave Band method. Hearing Protection Calculator Help - Octave Band

hearing protection calculator - hml method

Hearing Protection Calculator - HML Method
Calculates the sound level at the ear when wearing hearing protectors. This calculator uses the standard HML method. Hearing Protection Calculator Help - HML

hearing protection calculator - snr method

Hearing Protection Calculator - SNR Method
Calculates the sound level at the ear when wearing hearing protectors. This calculator uses the simple SNR method. Hearing Protection Calculator Help - SNR

 

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