Walt Zerbe attended the annual Audio Engineering Society show (AES - http://www.aes.org/) and tells Ed Wenck all about high-def audio advances, the trend toward recording and re-mastering music in surround-sound formats, the errors inherent in calibrating with pink noise, and much more. (Walt also got to hang out with Thomas Dolby. SCIENCE!) For more on CEDIA, check out cedia.net.