Last Updated: 20060803, mei
T9 - DIGITAL PLUMBING FOR STUDIO, BROADCAST, AND LIVE AUDIO
Presenter:
Michael Poimbeuf, Digidesign - San Francisco, CA, USA
Abstract:
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.
