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AES Munich 2009
Audio Product Design Event W7

Friday, May 8, 09:00 — 11:00

W7 - Audio Coding for Broadcasting—Status Report

Gerhard Stoll, IRT Munich
Bjørn Aarseth, NRK, Norway
Udo Appel, Bayerischer Rundfunk - Germany
Dave Marston, BBC - UK
Roger Miles, EBU, Switzerland
Thomas Saner, SRG SSR idée suisse - Switzerland
Karl M. Slavik, Broadcast Consultant Dolby Laboratories, Inc./Artecast - Austria

Both Digital Radio and Digital TV are relying on new, efficient audio codecs in order to supply the listener with lots of audio channels. Lots of audio channels may have a different meaning for TV and radio. Whereas TV, in particular HDTV, is going toward mainly multichannel audio, digital radio, here in particular terrestrial radio, is aiming for more and more radio programs with stereo as the main audio format. In this context several questions need to be answered, e.g.:

• Do we have the appropriate audio coding systems for stereo and multichannel audio?
• What kind of audio quality do we need together with HDTV?
• Is 5.1 multichannel audio still the suitable format for HDTV?
• What happens with cascading multichannel audio codecs, which occur in real-life situations?
• Is broadcast quality, as defined by EBU in 1990, when DAB had been developed, still an issue for radio broadcasting?
• How many radio programs can be provided by new radio broadcast systems, e.g., DAB+?
• What is the role of 5.1 multichannel audio in radio broadcasting?

Several broadcast experts will talk about their experience with low bit-rate audio in a modern broadcast infrastructure and will try to provide answers to the questions above.