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Thisis very helpful when industrial zones in the vicinity ofresidential areas are planned and noise levels need to bepredicted.PCSP Program Controlled Segmented Processing Cadna A is able to process more than 16 millionobjects per object type without any problems, even modelsof cities (with option XL). Cadna A subdividesthis area dynamically with respect to acoustic needs. The reflection coefficient of screening objects can bedefined or selected from a predefined list.Wooded areas and groups of buildings, that are notmodeled separately, can be defined with arbitrary shape.Modelling of the landscape by contour lines and break lines.Input of areas with arbitrary shape and a defineablesound power level per square meter. Thisfeature allows the modeling of more or less open structu-res that are in reality an accumulation of pipes, vesselsand other technical equipments that can be penetrated bysound energy.Screens are represented by a sequence of straight lines.They can have a sloping edge. The appropriate roads are recognized bythe program automatically.Local and global definition and edition of the occupancyof railway tracks.Area sources with emission values are calculated bythe program in such a way, that permissible immissionvalues are not exceeded for an unlimited number ofimmission points in the vicinity (optional).Buildings with arbitrary outline are included as screeningand if necessary as sound radiating objects.The object Building has the property "acoustical transpa-rency" quantified by a parameter value in percent. From these parameters the emission values arecalculated.Crossings controlled by traffic lights are easily defined inthe computer model by clicking the traffic light symbol intothe crossing-area.
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Emission values ofthese sources and their calculation carried out alternativlywith A-weighted levels or in frequency bands.Effective support of frequency-dependent calculations bydatabases with spectrum of sound pressure levels andtransmission lossUse of emission values related to ISO 3740 standards.This allows the use of sound power levels stated by themachine manufacturers.Paramteric input for roads, railways, parking areas andairports. A large refinery with thousands of sourcesis just as easily assessed as the calculation of the heightof a wall that is necessary to screen a single loadingplatform.Noise sources of any complexity can easily be modelledby point-, line- and surface-sources. This allows avery simple administration of variants.No practical limitation in number of sources and im-mission points. With its flexiblelogic structure the program will prove of high value to expertswho regularly tackle noise problems as well as to those whoare responsible for environmental questions but are unfamiliarwith the technical aspects of noise propagation.Ĭadna A allows the assessment of noise immissions inaccordance with national regulations.Īll data of a project are handled in one file and can besaved and loaded by typing the filename. Successful symbiosis of acoustics and softwareĬadna A has been developed by acoustic and softwareprograming experts - this being a prerequisite for the creationof such an effective tool in noise abatement.
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Thisallows the updating of data in external databases, ifthese data are also to be used by other applicationsĪll devices with Windows driver can be used
Open connection database interface to all databaseslike dBase, MSAccess, FoxPro, Paradox, SQL etc. Import of many data-formats such as DXF, SICAD, AtlasGis, ArcView etc.Įxport of tables and graphic presentations to the clip-board and therefore import with two keystrokes into otherWindows applications like text- and spreadsheet-programs.Export also in DXF, ASCII, RTF format
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Modification of noise source parameters results in a realtime update of emission values - a very quick way oftesting noise abatement measures buildings, noisy areas) and polylines (linesources, roads, screens etc.) can have any shapeįor the most important noise sources like roads and railways the emission levels are calculated from the noise-relevant parameters Geometrically generated by coordinate input with mouse,digitizer or keyboard, with the possibility of using thesedevices parallel Very effective and easy-to-use Windows program:Ĭadna A is a 32-bit MS Windows program graphic user interface with easily understood symbols all objects like roads, railways, parking areas etc. The program provides for easy entry and configuration oflandscapes with all that influence sound emission and pro-pagation, the calculation and the documentation of the noiselevels in accordance with national regulations, and the pre-sentation of the results with noise contour plots and colourednoise maps. Industrial facilities, sport- and leisure facilities, roads and railways, airports and any other noisy equipment.
Cadna A for Windows is a softwareprogram for predictionand assessment of noise levels in the vicinity of:
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