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