Matrixed Multi-channel Extension for AAC codec

Szczerba M, de Bont F, Oomen W, van de Kerkhof L. Matrixed Multi-channel Extension for AAC codec. In: AES Convention 114. Audio Engineering Society; 2003. Paper 5796. Available from: https://aes.org/publications/elibrary-page/?id=12552

@inproceedings{Szczerba2003_12552,
  author = {Szczerba, Marek and de Bont, Frans and Oomen, Werner and van de Kerkhof, Leon},
  title = {{Matrixed Multi-channel Extension for AAC codec}},
  booktitle = {AES Convention 114},
  note = {Paper 5796},
  year = {2003},
  month = mar,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=12552}
}

TY  - CPAPER
TI  - Matrixed Multi-channel Extension for AAC codec
AU  - Szczerba, Marek
AU  - de Bont, Frans
AU  - Oomen, Werner
AU  - van de Kerkhof, Leon
T2  - AES Convention 114
M1  - Paper 5796
PY  - 2003
DA  - 2003/03/06
UR  - https://aes.org/publications/elibrary-page/?id=12552
PB  - Audio Engineering Society
LA  - en
AB  - With the introduction of new standards like DVD and SACD, multi-channel audio systems are growing in popularity. In order to maintain compatibility towards customers that have not migrated to a multi-channel environment, there is a strong demand for the stereo compatibility. Such compatibility was already introduced within the MPEG-2 BC audio standard by means of a matrixed multi-channel extension. The encoded data consists of the stereo downmix stream and the multi-channel extension information. The bitstream syntax allows legacy stereo decoders to decode the downmix, whereas the multi-channel decoders are capable to reconstruct all multi-channel signals. In this paper a matrixed multi-channel extension coding method based on the MPEG-2 AAC standard is introduced. To obtain the highest possible audio quality for both the compatible down-mix and the multi-channel signal in all circumstances, several new solutions were introduced. These include dominant center and dominant surround processing, as well as common window switching. Results of listening tests conducted using both stereo and multi-channel decoded streams are presented.
ER  -