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.

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