This is the main window of AV Voice Changer Software Diamond Edition where you can see the Voice Morpher and the Parody panels, as well as the Volume mixer and the Advanced control bar 

The Preferences window of AV Voice Changer allows you to set Common configurations as well as Ignore Filters and Nickvoice rules 

In the Comparator window you can compare a recorded voice with a voice that is already stored and then see the similarity between them 

In the main panel you can select a voice with which you want the recorded voice to sound like. You can choose from male, women, special or parodies voices 

Here is the Voice Analyzer which lets you view the Harmony, Brightness and Pitch analyzers