Software for voice modification

Several software packages allow you to transform your voice, using instant effects or filters.

Freeware

MorphVOX Junior

The software presents the light basic functions of the Pro version (see below). You can change your voice in real time, man or woman. It is used for sessions of video games for online and voice instant messaging (MSN, Skype).
http://www.screamingbee.com/product/MorphVOX.aspx

Audacity

Audacity is an open source (free) which lets you manipulate audio files. More complex than MorphVOX, it can apply different effects and filters your voice: echo, phase, etc.
http://audacity.sourceforge.net/

Software

MorphVOX Pro

The shareware version of MorphVOX (demo for 7 days) is enriched with hundreds of voices and special effects (distortion, background noise). You can change your voice with filters. Perfect for online gaming and suitable for all VoIP software (Skype, Google Talk, Yahoo Messenger, MSN Messenger)
http://www.screamingbee.com/product/MorphVOX.aspx


AV Voice Changer Software

AV Voice Changer is a software that allows you to modify his voice in real time, with an extensive range of effects. Compatible with chat rooms, and voice messaging software. It can also imitate any voice.
http://www.audio4fun.com/voice-over.htm


Virtual personality


Virtual personality is primarily a professional tool to optimize the natural quality of the voice, or transform it. You are to choose between 24 types of voices.
http://www.triplebit.com/products.htm