use a vocoder
or use a speech synthsizer
A program to change how your voice in the microphone sounds?
Hi.Download and install MorphVox Junior (www.screamingbee.com) ! It's also compatible with VOIP software (Skype).
A program to change how your voice in the microphone sounds?
There are plenty of them,
for example http://www.dissoft.com/AV-Voice-Changer-Software-375.html