Testing the Waves Reverb DMO

It's finally time to perform a test on the WavesReverb DMO. You'll find the test files for this example in the \Chapter 15\DMOTest folder of the CD (including the files that we created in the previous section). The example will show how to run all of the available tests. Your DMO test might be more selective or your might create custom tests. The following steps show how to set up the DMO test:

1. Use the Tests 0 Select Tests command to display the Select Tests dialog box shown in Figure 15.8. This dialog contains the standard set of tests that Microsoft suggests you run on a DMO. You can also use these tests to check the performance of an existing DMO in a new test scenario, such as after installing updated DLLs or new hardware. Of course, there's nothing to stop you from testing multiple DMOs.

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Figure 15.8: Select one or more of the tests to run on one or more DMOs.

2. Click Add All to add all of the standard tests as shown in Figure 15.8. Click OK to close the Select Tests dialog box. At this point, we know which tests will run but haven't selected a test DMO yet.

3. Use the Tests 0 Choose DMOs command to display the Select DMOs for Test dialog box shown in Figure 15.9. Notice that this dialog box shows the WavesReverb DMO checked. You could test any of the DMOs in this list, but the example will check only the WavesReverb DMO. We still need to add the test file for this DMO. If you run the tests without adding at least one test file (you can always add more), at least some of the tests will fail.

ngure 15.9: Check the DMOs that you want to test.

4. Right-click the WavesReverb DMO entry and choose Select Test File from the context menu. You'll see a Select Test Files dialog box.

5. Click Add. You'll see an Open a File dialog box.

6. Locate the test file we created using GraphEdit. Highlight the file and click Open. You'll see the file added to the Select Test Files dialog box.

7. Click OK. The Number of Test Files column entry for the WavesReverb DMO will show that you have one test file selected. We're ready to run the selected tests on the Waves-Reverb DMO.

8. Click OK to close the Select DMOs for Test dialog box. Use the Tests 0 Run All Tests command to begin the testing process. It will take a while for DMO Test to check all of the test conditions. When the test series completes, you should see output similar to that shown in Figure 15.10.

igure 15.10: The output screen will show whether the DMO passed or failed the tests.

It might disturb you to see that this built-in DMO failed two tests. I ran the same DMO with several input files and it failed on some but not on others. The example file was specifically selected to show a failure condition. When you do test a DMO, it's important to use more than one test file so you can see how the DMO reacts to a variety of media types. In addition, it's important to run the tests more than one time—this DMO doesn't fail with the same data file every time the test is run. The data and environment you choose for testing is just as important as the test scenarios.

Note The MyTest.PRO file is a text file that you can easily edit with Notepad. You'll need to edit this file to change the location of the MyTest file used for testing purposes.

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