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,
Españae-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 assessment
CANARINA: Home - Air pollution · DISPER - Noise pollution · CUSTIC - Water pollution · DESCAR - Contact us
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.
Edinburgh - environmental abatement - environmental act - environmental eia -
Ely - environmental standards - environmental policy - hearing noise -
Exeter - environmental disturbance - dog barking noise - noise levels -
Glasgow - environmental safety - environmental city - epa noise - environmental measurement -
Lichfield - osha noise - human noise - db noise - natural noise -
Hertfordshire -
roadway noise - noisy road - environmental software providersDorset - noise safety - noise london - noise abatement - noise berms -
Buckinghamshire -
noise traffic - barrier road - noise wall -Bedfordshire - asphalt road - noise accident - noise signals -
Aberdeen - stopping road noise - road noise frequency - road noise vibration -
Armagh - ontario road noise analysis - rdx road noise - calculation of road traffic noise crtn -
Bangor - road noise review - fix road noise - highway noise -
Bath - residential road noise - road noise complaints - environmental software providers
Belfast - pavement road - road traffic - noise laws -
Birmingham - noise signs - road signs - noise fencing -
Bradford - noise barrier - noise walls - concrete road -
Brighton & Hove - noise fences - noise fence - noise sign -
Bristol - noise berm - road safety - noise act - environmental software providers
Cambridge - noise regulations - noise trees - noise stop -
Canterbury - noise construction - noise signal - noise congestion-
Cardiff - noise standards - noise width - trees road -
Carlisle - noise levels - noise concrete -
Chester - noise screen - signage road - noise law -
Chichester - noise engineering - noise landscaping - noise control -
Oxfordshire - industrial noise control - noise control products - noise control materials -
Staffordshire - noise control engineering - office of noise control - noise control act of 1972 -
Gloucestershire - institute of noise control engineering - environmental software providers
Lancashire - control of noise regulations - noise emission control - how to control noise pollution -
Cambridgeshire - code of practice on environmental noise control - environmental software providers
Shropshire - noise control plan - noise control engineer - noise control methods -
Somerset - quiet zone noise control - noise vibration control - environmental noise control at concerts -
Cambridge - noise and vibration control - control of noise - noise control regulations -
Canterbury -noise control system - noise control solutions - noise control laws -
Cardiff - noise control engineering - active noise control - noise control systems -
Carlisle - noise control regulation - noise control ordinance - acoustics and noise control -
Chester - remote control noise - noise pollution regulation and control rules 2000 -
Chichester - noise control services - control of noise pollution - noise control material - environmental noise control manual -
City of London - noise control in buildings - noise control barrier - office noise control
Coventry - environmental noise control - noise control act - noise pollution control -
Derby - noise control techniques - noise control guidelines - noise control policy -
Dundee - active noise control system - noise control law - enviro noise control -
Durham - outdoor noise control - airport noise control - noise control centre -
Edinburgh - office of noise abatement and control - noise control by law - noise control legislation -
Ely - residential noise control - how to control noise - active noise control systems -
Exeter - animal noise control - noise control panels - noise & vibration control -
Glasgow - noise control engineers - acoustic echo and noise control - dog noise control -
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.