StarLeaf devices include software by Fraunhofer IIS and by Radvision.

Fraunhofer IIS

AAC-ELD and Acoustic Echo Control technologies licensed by Fraunhofer IIS

http://www.iis.fraunhofer.de/amm/

Radvision

“Portions of this software are © 1996-2009 RADVISION Ltd. All intellectual property rights in such portions of the Software and documentation are owned by RADVISION and are protected by United States copyright laws, other applicable copyright laws and international treaty provisions. RADVISION and its suppliers retain all rights not expressly granted.”