Last Updated: 20060803, mei
Friday, October 6, 1:30 pm — 3:30 pm
T9 - DIGITAL PLUMBING FOR STUDIO, BROADCAST, AND LIVE AUDIO
Michael Poimbeuf, Digidesign - San Francisco, CA, USA
This seminar presents an overview of commonly used digital audio interconnection technologies, including cabling, circuits, modulation theory, and analysis techniques for performance measures. The interconnect technologies we study include AES-3 (AES/EBU), IEC60958 (S/PDIF), and IEEE802.3 (ethernet). Cabling includes shielded 110-ohm twisted pair, UTP and ScTP “category” cable (Cat5/5e/6), and 75-ohm coaxial cable. Circuits include clock/data recovery and PLLs. Analysis techniques and performance measures range from eye-diagrams and transport jitter measurements, to bit error rate (BER) estimation based on signal-to-noise measures such as NEXT, FEXT, and Alien Crosstalk. We conclude with discussion of new interconnection technology currently in development.