You can sound like a singing instrument, a robot, and everything in between - Windows Shareware $24.95. Pb Vocoder is a software application that can make a human voice sound like a singing synthesizer, a robot, a demon, and everything in between.

All in a simple to use, lightweight package! Renders to disk, or directly to your soundcard. You load the Wave files that you want to use directly into the application, no third party Direct X or Vst host is required. Supports sample rates between 8000 and 192000 hZ, in 8 or 16 bit format.