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Algorithms I · software · noise prediction software

                 

CUSTIC Algorithms I:

The mathematical model that the software uses provides options to model noise emissions from a wide range of sources that might be present at industrial areas and urban areas. The basis of the model is the linear sound propagation  equation, which is used to model simple point source emissions from vehicles, industries, aircrafts,… Emission sources are categorized into two basic types of sources: point sources and line sources. The algorithms used to model each of these source types are described in detail in the following sections. The CUSTIC software accepts meteorological data records to define the conditions for sound propagation. The model estimates the noise level for each source and receptor combination and calculates user-selected averages.

For an external source, the noise level equation is 

Leq=LW-20Log(r)-11dB(A)

where r is the distance and LW the source power. However, for an industrial complex, the next equation will be used:

Leq=Li+10Log(S)-20Log(r)-14dB(A)

where S is the external surface and Li is the internal noise power.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Noise pollution map (colour gradient) produced by roads in decibels dB(A). The red colour represents high noise levels. We have 1000 vehicles per hour at a velocity of 50km/h. software · noise prediction software

 

 

Noise map for a road in ArcView that has been previously calculated by CUSTIC. The data have been exported in EXCEL and imported by ArcMap. software · noise prediction software

 

 

Noise map in the XZ plane for a line source. Colour gradient has been used. software · noise prediction software

 

software · noise prediction software

CUSTIC software solutions: This application has been used in great number of environmental reports, noise courses and noise studies in the last years. We currently have users in more than 10 countries.

Lancaster - noise estimation - noise detection - noise processing -

Leeds - bandwidth prediction - noise amplitude - noise waveform -

Leicester - frequency domain noise - noise calculation - nonlinear prediction - noise introduction -

Aberdeen - noise software modeling in highways  - noise prediction in industries - impact noise -

Armagh - environmental complaints - environmental water pollution - global noise -

Bangor - environmental population - noise complaints - noise ordinances -

Bath - noise mapping software report  - environmental noise near airport report  - noise software modeling in roads  -

Belfast - environmental ordinance - noise law - noise measurement -

Birmingham - noise barking dogs - enviroment noise - noise control - environmental health -

Bradford - environmental noise near airport report  - noise software modeling in roads  - noise prediction in plants

Brighton & Hove - environmental police - project noise - environmental report

Bristol - noise prediction software - traffic noise prediction - neural network noise -

Cambridge - environmental sound - environmental legislation - noise abatement -

Canterbury - noise signal - noise frequency - f frequency prediction

Cardiff - noise prediction in plants - noise prediction - noise prediction model -

Carlisle - environmental noise near chemical industry study  - noise software modeling in industries  - noise prediction in railways

Chester - environmental problems - noise laws - decibel noise -

Chichester -environmental ecosystem - environmental law - environmental construction

City of London - noise software modeling in highways  - noise prediction in industries - noise theory -

Coventry - environmental ordinances - neighbor noise - environmental industry -

Derby - noise software modeling in roads  - noise prediction in plantse - environmental air pollution -

Derry - environmental meter - environmental nuisance - environmental deforestation -

Dundee - noise decibels - environmental global warming - environmental issues -

Durham - noise complaint - environmental acid rain - environmental complaint -

Stoke-on-Trent - highway noise barrier design - types of noise barriers - noise barrier panels -

 

Sunderland - noise studio - noise industrial - noise level 

Swansea - noise room - noise floor - noise construction -

Truro -  noise abatement - tree barriers - acoustical barriers

Wakefield - noise materials - noise garden - noise residential -

Wells - sound proof noise - noise absorption - noise landscape -

Westminster - noise ceiling - noise rating - noise urban -

Winchester - sound noise - walls barriers - noise rooms

Wolverhampton - noise acoustics - noise attenuation - noise highway -

York - noise concrete - floor barriers - noise safety -

St David's - environmental electricity · environmental air pollution · environmental deforestation · environmental EIA ·

Stirling - sustainable software ·  environmental data management ·  environmental management information system ·  environmental softwares

Swansea - environmental impact assessment guidelines ·

Truro - 14001 software ·  scientific software ·  environmental management system ·  environmental management · 

Stoke-on-Trent -  human impact environment · programmatic environmental impact statement · environmental microbiology impact factor

Sunderland -  environment impact · environmental impact survey · mining environmental impacts · environmental impact assessement ·

Wakefield -  reduce environmental impact · impact on environment · environmental impact of coal · negative environmental impacts

Wells - pollution software and  geology software ·  environment softwares and  safety software ·  compliance software ·  ecology softwares · 

Wolverhampton -  3d environment software ·  environmental reporting software ·  software environment management

Worcester - for draft environmental impact report · environmental impact regulations · reducing environmental impact ·

Westminster -  software testing for environment ·  environmental software providers ·  environmental modelling software ·

Winchester -  software development for  environment ·  environmental modelling and software ·  software test for environment ·  environmental modeling and software

York -  environmental impact asessment · impacts on environment study

Coventry -  impact of e business on the global legal environment · environmental impact assessment training · negative environmental impact ·