In order to uninstall Voice Changer from your macOS system, you will need to delete the plugin file from their folders.
After the product deactivation, close your Audio or Video editor and,
a) Go to the Finder and click on the "Go" menu,
b) Click on "Go to folder..." and paste in one of these file paths:
- /Library/Application Support/Avid/Audio/Plug-Ins
c) Then, in each folder, find Voice Changer, and move it to the Trash.