Calculate and Export Partial Level Table by Eighth Bands

Let us assume the following scenario in the there are 2 point sources, with the sound power spectrum allocated, 3 receivers and a calculation area around all the elements to be included in the calculation of partial levels:

Then access the ObjectTree Definition through the menuTables/ObjectTree/Definitionor using the iconand create the "Sources" directory.

Right-click on the perimeter of the Calculation Area and select the optionModify objects. Select the following settings (in case of more font types, select by also holding down the keyControllerto maintain the other selections) and tapOk ok:

Select the Attribute:ID (ID code), the optionReplace characters, press the iconand select the "Sources" directory. The following window should be displayed:

PressOk okand thenAll.

AddressTables/ObjectTree/Partial Levelsand both the sum of the levels of all sources in each receiver and the partial levels of each source in each receiver will be displayed:

To copy the table to the clipboard use the buttonCopy...

In this example, it refers to day interval levels. To select another time interval (afternoon or night) you must select it from the toolbar and re-access the table.

Important note:

By default, CadnaA does not allow the spectrum of partial levels when there are a large number of receivers. To resolve this, you must follow the following steps:

1. With the project open, go to Options/Open INI File.

2. In the file to be opened, write the following expression under [Main]: ObjTreePartLevSpekImmAnz=X (X being the number of spectra being the number of spectra. For example, if there are 28 receivers in the project:

3. Save and close the file.

4. Calculate levels and go to Tables/ObjectTree/Partial Levels.

Partial levels by eighth bands should be displayed at each of the recipients of the project.

• Related Articles

• Calculate the noise level in enclosures when it comes from other enclosures

  This example defines the spectrum of a custom noise source located in a particular enclosure, in order to calculate the levels received in the adjacent enclosures. 1) Draw the plan of the next building on one floor and assign the different ...

• Export 'Terraplene' such objects as ESRI Shape (*.shp)

  With CadnaA it is not possible to export the type of Embankment object directly as a shape: However, it can be exported as a shape by turning the Embankment object into a Screen-type item and by performing the following steps: 1) Write the 3 ...

• Export calculated values of a mesh in CadnaA

  When calculating a mesh and visualizing the values he has calculated in that mesh, the user may be interested in exporting them. In order to do so, the user must contactFile/Export..., select the typeESRI Grid (*.asc; *.hdr), type a name and ...

• Manual adjustment of the generator level before executing measurements of a Path Signal

  When the APx500 software is handled within each Signal Path of each sequence, a Prompt can be added that allows you to manually adjust the level of the generator before the selected measurements are started within that. To do this, the following ...

• Attributes of population distribution in buildings (FAC_EINW_x)

  CadnaAhas different attributes to quantify the distribution of the population at facade points(FAC_EINW_x) where you want to calculate and export data: We can distribute the population equally to each facade point: FAC_EINW_C ("c" of "count") or ...