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
	Decibel Calculator Addition and subtraction of decibels, with an explanation of how dB addition works.   Ldn and Lden Calculator Calculates both the Ldn (day-night) and Lden (day-evening-night) from hourly Leq.

	Noise at Work Calculator and Reporter
	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.     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       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 Calculator Calculates the sound level at the ear when wearing hearing protectors. The calculator uses the SNR, HML or Octave Band method. Hearing Protection Calculator Help