Atti Venkatraman, PhD, is a Staff Engineer at Verance Corporation. His work focuses on the development of robust and advanced watermarking algorithms for digital cinema. Prior to Verance Corporation, he was with Acoustic Technologies, where he focused on the research and development of perceptually-based algorithms for acoustic echo cancellation, noise reduction, and audio enhancement for both cellular handset and telematics solutions. He has worked extensively on integrating perceptual signal processing methods in linear prediction. He has also contributed heavily to advanced distance learning technologies involving Java.