Antares Audio Technologies has announced Harmony Engine ($349), a real-time vocal harmony-generating plug-in.
Harmony Engine has four independent harmony voices, a variety of harmony-generating modes, humanization features for natural-sounding performances, and a flexible real-time preset system for harmony and vocal type, allowing you to produce vocal arrangements in many different styles.
The plug-in will be available in July, 2007 for RTAS, VST, and AU. All Mac versions are Universal Binary versions, and PC versions are compatible with Windows Vista.
More information is available at the Antares Web Site.