<< Click to display Table of content >> Navigation:  The Model > The sources > Industrial sources > Linear sources > Add a linear source

•From the ribbon Model, click on the button in the group Add items.

•The Line tool is active. Design the geometry corresponding to the new object and finish by pressing the Enter key.

•The Linear source interface is displayed so that the parameters of the input line can be entered.

•This interface has two tabs: Geometry and Acoustics

•Once the linear source is configured, validate by clicking on the OK button.

Geometric parameters

Enter the geometric parameters:

•The Number of lanes (from 1 to 10).

•The Platform width.

•The Source height.

•The Platform material.
If you don't want to create the platform, uncheck the option Create platform.
The possible values for materials are:

 

The schema is automatically updated in accordance with the parameters.

Acoustic parameters

Enter the acoustic parameters:

•Enter a name for the line source in the Comment field to distinguish it from another in the interfaces referring to this source. By default, the line source takes an unused name.

•A Nature. The button can be used to add a nature.

•The Mode: Model, Spectrum or Point source in motion

oThe Model mode allows to select a model stored in the List of reference models. To do this, click on the button. This is useful when several sources share the same caracteristics.
You can see the caracteristics of the reference modele by clicking on the button.
The corresponding spectrum window is accessed via the button or via the context menu:

 

If the source does not work continuously over a period, set the percentages of use for this period (P% column in the table).

oThe Spectrum mode allows to define an acoustic spectrum specific to the linear source:

The buttons allow to:

▪Increase/Decrease spectrum by +/-1 dB or +/-10 dB.

▪Set the spectrum to 0 dB.

▪Copy the spectrum.

▪Replace the current spectrum by the spectrum in the clipboard (Paste).

oThe Point source in motion mode allows to describe point sources which move along a path defined by the line representing the linear source:

▪Add a point source by clicking on the button.

▪Then define the traffic (number of vehicles and speed) associated with this point source for each period.
By clicking on the button, you can specify a different speed for each period.

▪Repeat this process for each point source in motion on this path.

▪In the point sources table, each row correspond to a point source. You can do different actions depending on the selected cell:

❑By selecting a cell in a row corresponding to a point source, you can view the information associated with the point source by clicking on the button, or delete this point source by clicking on the button.

❑By selecting one or more cells in a column corresponding to a period (cells in the same column), you can view the corresponding acoustic spectrum by clicking on the button.

Graphical representation

•A pink / light purple area representing the platform.

•A dark grey axis which possesses all the informations of the linear source in attributes.

•Traffic in pink / purple.