User login

Enter your username and password here in order to log in on the website:

Not yet registered?

Download Demo Version

Get a taste of DataKustik software with our demo versions - free of charge. For download please click here.

CadnaA 2018 Out now!

Learn more about the new features of CadnaA 2018 and update now! Opens internal link in current windowmore

Initiates file downloadList of new features
Opens external link in new windowFree demo version

CadnaA Webtutorial

Teach yourself the elements of CadnaA with the CadnaA Webtutorial. more

CadnaA Users

CadnaA is successfully applied in many different industries in more than 60 countries all over the world. more

Success Stories

Noise Mapping Austria
The strategic noise maps for all of Austria were calculated with CadnaA. more

Air Pollution Calculation

CadnaA with Option APL allows calculation, assessment and presentation of air pollutant distribution.
Find more information
View typical applications

You are here: Products > CadnaA > Extensions > BPL - Backtracing of Sound Power Levels

Option BPL - Backtracing of Sound Power Levels

Option BPL is very useful in calibrating area sources of which the pressure level at distinct receiver points is known or has been measured, while the sound power level (SPL) or the SPL per unit area is unknown. Option BPL can even handle situations with several area sources and receiver points by applying a user-definable optimization strategy.

Option BPL is also used to fulfill the requirements according to German law when planning industrial or commercial areas. Legally, the sound radiating from different areas must be optimized in such way that the limiting values at all receiver points are not exceeded. The procedure of distributing noise emission for all area sources, with respect to the limits, is known as "Fixing of Noise Quota" (Lärmkontingentierung).

 Planning situation with three optimizable area sources


Option BPL optimizes the noise emission in the most favorable way. In CadnaA a specific source type called "optimizable source" offers a flexible approach without restricting the user to a fixed predefined optimization strategy. To achieve this a "usability function" is defined for each area source.

Features

  • Automatic or manual optimization of noise emission
  • The sound propagation by the "optimizable source" is equivalent to an area source, with respect to segmentation with or without screening
  • The screening effect by objects inside the optimizable source can be deactivated with regard to ist own emission
  • Switching of the evaluation period day/night
  • Input of LWA or LWA" alternatively
  • Specific usability function for each area
  • Noise emission restricted by MIN and MAX values