Creating White Noise Modulation

This task will show you how to create a white noise modulation.
A White Noise Modulation is a constant modulation (equal to one).

• Only available with the Generative Dynamic Response Analysis (GDY) product.
• A Dynamic Response Case must have been previously inserted.

Open the sample56_1.CATAnalysis document from the samples directory.

1. Click White Noise in the Modulation toolbar.

   The White Noise Modulation dialog box appears.  A Modulations.1 set has been created in the specification tree under the Finite Element Model.1 set.

2. Modify the name of modulation you just have created, if needed.

3. Click OK in the White Noise Modulation dialog box.

• You can now define the load excitation set or the restraint excitation set.
  To do this, refer to the Dynamic Response Sets chapter in this guide.

• You can have several modulation objects (white noise modulation or imported modulation) in the modulation set.
  To know how to import a modulation from an existing file, refer to Importing Frequency Modulation or Import Time Modulation in this guide.