AES Berlin 2017
Workshop W19
Monday, May 22, 16:30 — 18:00 (Salon 4+5 London)
W19 - Modern Hybrid Audio Coding
Jürgen Herre (Chair), Sascha Dick (Panelist), Andreas Niedermeier (Panelist), Heiko Purnhagen (Panelist)
During the past one and a half decades, recent audio coding schemes have significantly overcome traditional limits for compression efficiency by adopting techniques for semi-parametric (hybrid) coding of audio signals. By doing so, full-bandwidth stereo reproduction can today be achieved even at very low bitrates, such as 12kbit/s. The keys to this breakthrough achievement were two types of semi-parametric coding extensions: Firstly, methods for bandwidth extension (BWE) allow full reproduced audio bandwidth even at low rates. Secondly, methods for parametric stereo (or multi-channel) coding enable good reproduction of spatial sound under similar circumstances. The workshop will present the current state of development in these active areas, describe relevant technology and illustrate its performance by sound examples.