FaceTime volume issue in Mavericks

Question

We have an audio application for Mac OSX which is music player with some audio effects . Ever since we upgraded to mavericks(10.9) we are finding one weird issue i.e when we get call from facetime our application volume automatically reduces. As per our analysis,facetime seems to lower every other applications volume and there is no control on it. These are few discussion on the same issue https://discussions.apple.com/message/23592588#23592588

As a temporary fix , we are planing to display some kind of UI to the user to inform that volume is reduced due to the facetime call.

Is there any notifications/API that we will get when we receive a facetime call or any other way to resolve this issue.

Answer 1

Unchecking the audio ducking only fixes the reduced sound that occurs when the "voice" of your computer is speaking. If you have set it up to do so, it is not a fix for the facetime and other application's issue