Some time ago I could not get the microphone working. So I did some looking around in these forums and installed Pulse Audio.

I found a master control screen (I'm nearly sure in Pulse Audio) that had about a dozen vertical bars controlling all aspects of my audio. At lot were disabled, so I enabled everything. It worked, except that the microphone was always on.

I suffered this for some months but my wife doesn't like it, so now I want to fix it so that the microphone only works when I have a use for it, which is normally for Skype.

But I cannot find the master control screen! How do I find it?

Your help appreciated.