Geluidduider angular offset / sound 3D map

Geluidduiders report the angle of the dominant sound relative to their own zero point.

This zero point usually doesn't point to true north; to compensate for this, an angle compensation must be entered in the geluidduider itself.

Determining the angle

• The red line is true north.
• The blue line indicates the zero point of the geluidduider
  • This is the same as the orientation of the expansion hook if one was used for installation.
• Determine the angle of the green line—in this example, 130 degrees.

Entering the angular offset

Edit the measurement point in question and go to the Location tab.

Under Measurement point properties, enter the Measurement height and Angular offset.

• The measurement height is required for the 3D Sound Map to work.

Click 'Save to Sound Meter' to write the Angular offset value to the meter. The meter must be online for this to work.

Entering the Source Height

For the 3D Sound Map to work, the expected source height must also be entered.

Currently, this can be done by:

• Setting the measurement point to Source (emission point) type
• Entering the Source Height on the Source tab
• If desired, the measurement point type can then be changed back to Receiver (immission point)