Question

I am working with a program that will often be used hand in hand with some form of Windows phone call.

The other sounds that take place during the execution of my program will sometimes be muffled because the person using the program will have settings in place in the Sound->Communications dialog that will cause this.

Is there any way to access this dialog programatically and adjust the options for the user without them having to do it?

A Subsequent question; is there some way to provide a white-list of programs to Windows as to which programs to NOT apply these settings to?

I just began investigating this issue, so any input is much appreciated!

Answer 1

You can directly access the registry setting the dialog saves to, in order to change the option.

HKCU\Software\Microsoft\Multimedia\Audio\UserDuckingPreference

Set the DWORD value to 0, 1, 2, or 3, to set the respective value in the dialog (top to bottom).