The following techniques and examples support Checkpoint 3.3 from the IBM Software Accessibility Checklist . Provide volume control in the software. Windows applications where sounds are played by calling PlaySound and specifying a registry-based sound event do not require additional work to meet this checkpoint. The user can turn off these sounds by changing the Sound options in the Control Panel. Testing Test the software to ensure that it complies with accessibility requirements.
Several techniques are available to verify that the users can adjust the volume.
Verify the software respects the system sound settings. Verify the software provides an option to adjust the volume.