Directivity

NoiseModelling is a tool for producing noise maps. To do so, at different stages of the process, the application needs input data, respecting a strict formalism.

Below we describe the table DIRECTIVITY, containing all the directivity parameters.

The other tables are accessible via the left menu in the Input tables section.

_images/directivity_banner.png

Note

If you want to see how to use this table, have a look to the tutorial “Noise Map from Point Source - GUI” , in the section Step 5 (bonus): Change the directivity

Table definition

Warning

In the list below, the columns noted with * are mandatory

  • DIR_ID *

    • Description: identifier of the directivity sphere

    • Type: Integer

  • THETA

    • Description: vertical angle in degrees, 0 (front), -90 (bottom), 90 (top), from -90 to 90

    • Type: Double

  • PHI

    • Description: horizontal angle in degrees, 0 (front) / 90 (right), from 0 to 360

    • Type: Double

  • LW63

    • Description: attenuation levels in dB for 63 Hz

    • Type: Double

  • LW125

    • Description: attenuation levels in dB for 125 Hz

    • Type: Double

  • LW250

    • Description: attenuation levels in dB for 250 Hz

    • Type: Double

  • LW500

    • Description: attenuation levels in dB for 500 Hz

    • Type: Double

  • LW1000

    • Description: attenuation levels in dB for 1000 Hz

    • Type: Double

  • LW2000

    • Description: attenuation levels in dB for 2000 Hz

    • Type: Double

  • LW4000

    • Description: attenuation levels in dB for 4000 Hz

    • Type: Double

  • LW8000

    • Description: attenuation levels in dB for 8000 Hz

    • Type: Double