Free Voice Changer is a software for Windows and is completely free to download. Free voice changer helps you to import an audio file and then you would be able to change voice pitch as well as the speed of this audio file. Generally you can record your voice with with the free Windows Voice Recorder, and then import the recording file into AthTek Free Voice Changer. You would hear you voice in a funny way. You can change your voice to any form male to female, female to male etc.