CANARINA:
CUSTIC:
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.
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.
Noise map in the XZ plane for a line source. Colour gradient has been used.
ALGORITHMS: Algorithms I - Algorithms II
Canarina Algoritmos Numéricos, S.L.
Environmental software solutions
Canary Islands, Spain
e-mail: contact us
European network on pollution · European Union
Member of MAPO: European network on Marine Pollution.
Project funded by the European Commission
through the 6th Framework Programme for Research and Development
noise control
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CUSTIC: Noise pollution · CUSTIC - Software solutions - Software advantages - Price - DEMO download
DATA: Input data I - Input data II - Input data III - Input data IV - Input data V - Import and export data - Software commands
ALGORITHMS: Algorithms I - Algorithms II
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.
Dundee - environmental impact assessment course · environmental impact of paper · negative impact on the environment ·
Durham - environmental health and safety software · environmental management system software · environmental modeling software
Derby - environmental impact assessment jobs · impact of tourism on the environment · noise pollution pictures
Derry - environmental impact of plastic · environmental impacts assessment Cl2
Edinburgh - environmental impact assessment directive · valley environmental impact review · environmental impact calculator
Ely - environmental impact assessment regulations · colonialism and its impact on environment ·
Gloucester - · environmental modelling & software · software engineering for environment ·
Aberdeen - environmental and social impact assessment · generic environmental impact statement ·
Exeter - environmental management software · environmental impact assessment reports
Glasgow - · tourism environmental impacts · positive environmental impacts · environmental impacts of wind energy ·
Sheffield - environmental pollution · impact software · sustainable development software · waste software ·
St Albans - environmental water pollution · impact effects · plant impact · environmental acid rain ·
Newcastle upon Tyne - acoustic isolation - concrete insulation - duct insulation
Newport - acoustic attenuation - acoustic vibration- acoustic control -
Newry -acoustic damping - acoustic values - room insulation - noise pollution pictures
Norwich - acoustic room - isolation insulation - industrial insulation -
Nottingham -acoustic concrete - insulation barrie - acoustic absorption -
Oxford - acoustic solutions - acoustic sound - acoustic walls -
Peterborough - acoustic ceilings - acoustic dampening - polyurethane insulation -
Plymouth - attenuation intensity - atmospheric attenuation - attenuation frequency -
Portsmouth - noise attenuator - noise pollution pictures
Preston - noise decibels - noise panels - noise coefficient -
Ripon -vibration attenuation - material attenuation - attenuation filter -
Nottinghamshire - noise attenuation wall - attenuation of ambient noise - noise attenuation barriers -
Leicestershire - sound attenuation - decibel attenuation -
Warwickshire - earplugs attenuation - noise pollution pictures
Armagh -what is noise attenuation - noise attenuation with distance -
Derry - noise attenuation barrier - noise attenuation calculation - noise attenuation db
Bangor - hearing attenuation - decibels attenuation - noise meter -
City of London - noise foam - attenuation amplifier - acoustical attenuation -
Coventry - noise insulation - db attenuation - acoustic attenuation -
Surrey - decibel noise - noise levels - current attenuation -
West Sussex - db noise - materials attenuation - noise pollution pictures
Hertfordshire - noise circuits - attenuation design - noise earplugs -
Worcestershire - calculation attenuation - noise frequency - noise measurements -
Buckinghamshire - distance attenuation - noise signal -
East Sussex - noise isolation - noise rating -
Bedfordshire - noise ultrasound - noise pollution pictures
Salford - transmission noise - output attenuation - air attenuation -
Salisbury - attenuation measurement - noise room - acoustics attenuation -
Sheffield - noise floor - noise intensity - noise acoustics -
St Albans - ear attenuation - noise wall - rf attenuation -
St David's - noise materials - sound noise - noise control -
noise pollution picturesStirling - noise protection - power noise - noise absorption coefficient -
Warwickshire - arizona noise ordinance -
Cornualles - ohio noise laws - oakland noise ordinance - pittsburgh noise ordinance -
West Sussex - washington noise ordinance -
Durham - model noise ordinance - wisconsin noise ordinance -
Copyright © 2005 Canarina Algoritmos Numéricos, Sociedad Limitada Unipersonal CIF-B38803110 registered for electronic commerce in sheet TF-35526, sheet 1 of the volume 2.671 of the General Section, First Registration, Registro de la Propiedad Número 2 y Marcantil of , Spain. All rights reserved.