Running the Audio Drift Test (Windows Embedded CE 6.0)

1/6/2010

Applies to Windows Embedded CE 6.0 R2

Procedure

To run the Audio Drift test

1. Connect the analog-line level-audio-output on the device being tested to the analog microphone audio-input using a loop-back cable.

2. Upload the sample files distributed with this test to the device being tested using the Windows Embedded CE Remote File Viewer.

   1. Open Platform Builder.
   2. From the menu bar, click Target.
   3. From the Target menu select Remote Tools.
   4. From the Remote Tools menu, select File Viewer.

3. Verify that DriftTest.exe is available in your release directory on the device being tested.

4. From the Windows Embedded CE Command Prompt type drifttest.exe -i InputFilePathandpress ENTER. Following is an example:

   driftest.exe -i \sinewave_800M16_80.wav

5. The test will play this sample file on a loop for approximately one hour. It will automatically stop if the playback and capture audio devices drift by one or more buffer lengths.

Note

Only one sample file, sinewave_800M16_80.wav, is provided with this test. This sample file is 16 bits, Mono, 8000Hz, and 120-seconds in duration.

To validate the Audio Drift test

1. If the playback and capture audio devices drift by one or more buffer lengths, the test will stop and display a message in the console window noting the test failure.

2. If the playback and capture audio devices do not drift, the test will continue to play the sample file for approximately one hour, then display a success message in the console window.

See Also

Other Resources

Audio Drift Test