CANARINA:
CUSTIC:
CUSTIC Algorithms II:
Roads:
In a road case, we shall consider several points. We shall consider a minimum number of 1000 vehicles per hour N with a 50km/h minimum velocity (100km/h is the maximum velocity). Then we have a 68 dB(A) noise level at 10m from a lineal road (infinity length). The noise level will be
Leq=68dB(A)+30Log(v/50)+10Log(N/1000)-10Log(r/10)
in the lineal (infinite) road case.
In the curved road case, the program considers a finite element method of calculation. Each small size of road contributes to the total noise level. Each contribution will be given by
Li=-10Log(a/180)
being a the angle of the small road size(degrees).
To obtain the total noise level, we add the different Li values following the equation
Leq= 10.Log[Si10^(Li/10)]
In the railway case, we shall calculate the noise level in a similar way. For airports, we shall use the next equation
Leq=Leq(300m)-20Log(r/300)
where Leq(300m) is the noise level at 300m from the airport.
This model performs satisfactorily for simple sound propagations with no ground interaction or attachment. The application will not consider sound reflections in the ground surface.
ALGORITHMS: Algorithms I - Algorithms II
Noise map for two roads using noise isolines.
Noise map in the XZ plane for three sources using colour gradient.
Canarina Algoritmos Numéricos, S.L.
Environmental software solutions
Islas Canarias,
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Project funded by the European Commission
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noise assessment
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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.
Wells - sound and air pollution in airports report - control in industries study - sources of noise pollution and noise modeling course -
Westminster - pollution noise from roads report - plant - the noise pollution in railways study -
Winchester - noise elimination and silencing near resident areas report -
Wolverhampton - noise pollution modeling in the coast - plant modeling - airport noise pollution modeling -
Worcester - airport noise impact assessment -
York - how to reduce noise course
Oxford - noise pollution definition - noise pollution times - pictures
Peterborough - noise pollution prevention - how to prevent noise pollution - health -
Plymouth - cause of noise pollution - information on noise pollution - noise pollution effect -
Portsmouth - noise pollution regulation - how to reduce noise pollution - noise pollution complaint -
Preston - noise pollution modeling in the coast - - traffic noise pollution - definition -
Ripon - study of noise suppression, noise levels and noise fluctuations in railways - cause and effect of noise course -
Salford - controlling - council noise pollution - define noise pollution -
Salisbury - noise pollution images - noise pollution statistics - law - noise pollution -
Sheffield - the effects of noise pollution - residential - domestic noise pollution - noise pollution facts - -
Derry - sound and vibration in railways study - noise cancellation and reduction in hospitals report -
Dundee - legislation - reporting noise pollution - laws on noise pollution -
Durham - environmental health noise pollution - control - noise pollution complaints -
Edinburgh - environmental noise pollution - rules - industrial noise pollution -
Ely - noise pollution modeling in Pontevedra - modeling in highways - report noise pollution -
Exeter - roads modeling - railway noise pollution modeling - in the coast -
Glasgow - roads modeling - railway - noise pollution modeling in the coast
Gloucester - noise cancelling and eliminating in roads report - soundlevel and sound control study in airports -
Hereford - noise pollution - prevent noise pollution - airport - environmental noise pollution
Hampshire - gis noise - gis airport- gis images -
North Yorkshire - gis remote sensing - contour noise -
Gloucestershire - gis application - gis environment -
Cumbria - terrain noise - environmental noise -
Cambridgeshire - noise contour map - environmental noise pollution
Lincolnshire - noise level map - environmental noise pollution
Cambridgeshire - noise map software - airport noise contour maps -
Devon - db map - gaussian map - noise meter - environmental noise pollution
Bangor - gis classification - data noise - gis analysis -
Birmingham - strategic noise maps - road traffic noise map - airplane noise map -
Bristol - airport noise exposure map - jet noise map - map of noise
Cambridge - noise exposure map - airport noise map - noise pollution map -
Carlisle - noise exposure maps - airport noise contour map -
Coventry - gis map - project noise - gis project
Dundee - gis pollution - gis maps - gis data - gis methods -
Glasgow - surface noise - gis land use - gis assessment - mapping noise
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 -
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.