This command is used to calculate Sound Power measurements from a Data Block containing Acoustic Intensity measurements. Sound Power is calculated by multiplying Acoustic Intensity by the surface area surrounding its corresponding measurement Point on an Acoustic Surface in a connected Structure file.
The connected Structure file must have an Acoustic Surface with uniquely numbered Points that match the Point numbers in the Roving DOFs of the Intensity measurements.
Each matching Point must also have a non-zero surface area associated with it.
The calculated Sound Power measurements are added to the Acoustic Intensity Data Block.
Sound Power and Acoustic Intensity shapes must be scaled differently in order to display them together in animation. This is done by defining two Groups of M#s.
Execute Edit | Select M#s | Select By, choose Measurement Type from the drop down list, and choose Sound Power from the Measurement Type list.
Press the Select button to select the Sound Power M#s, and press Close.
Double click on the Group column heading in the M#s spreadsheet, and type "Sound Power" into the dialog box.
Execute Edit | Select M#s | Select By again, choose Measurement Type from the drop down list, and choose Intensity from the Measurement Type list.
Press the Select button to select the Intensity M#s, and press Close.
Double click on the Group column heading in the M#s spreadsheet, and type "Intensity" into the dialog box.
To animate the Sound Power & Acoustic Intensity data together,
Execute Animate | Animate Using | Groups in the Structure window.