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.

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