P&K 2714

Averaging of non-continuous noises

Calculation of an averaging level of non-continuous noises.

Lm=10*lg(Sum(10^Li/10*Ti)/B) (see VDI 2058, September 1985)

TA Lärm guideline values:

		day	night
	pure business district	70	70
	primary business district	65	50
	mixed district	60	45
	primary residential area	55	40
	pure residential area	50	35
	Resorts, Hospitals	45	35

Descriptor

Descriptor is a user defined text, which will be transfered, by pressing OK, together with the results into the appropriate tables.

Reference period (B) [h]

Reference period for the evaluation level after TA Lärm is for the 16 day hours from 6 to 22 o'clock, for the loudest night hour.

Time intervals (Ti) [h]

Sound power levels (Li) [dB(A)]

Relative spectrum [dB]

see Relative spectrum

A-weighted average level (Lm) [dB(A)]

Average spectrum [dB]