Depending on the program you're using there might be a option to edit the audio levels if there is just make them either high pitched or slow them down.
If you want to change you accent, the best way to do it is watch videos/tv programmes that use that dialect/accent.
One can watch videos of the Voice by going to the website Youtube. The website has a variety of videos of performances made by contestants on the Voice.
He Uses a program called Autotune!
One can watch jigsaw voice videos on a number of websites. Jigsaw fanclub on blip, Jigsaw voice effect in Audacity on Youtube, and mail online jigsaw voice videos.
If you want to change you accent, the best way to do it is watch videos/tv programmes that use that dialect/accent.
The YouTube Video Editor is not powerful enough to add filters to your voice. You can change the loudness and add a single soundtrack to the video, but that's about it. For any other edits, you should use an actual video editing software.
Using a program like Celemony Melodyne, you change your voice pitch, vibrato and note length. You can also create harmonies from one vocal track recording.
go on bbc iplayer
Change the voice -> Voice change must be done.
VoiceXML is a programming language primarily used for building interactive voice applications. It can program an application to respond to voice commands.
To change your voice on ooVoo you will have to use their voice changer software.
He fakes it. You can see him in various youtube videos, etc, talking in a normal voice.