Parametric Joint Channel Coding of Immersive Audio

Lehtonen HM, Purnhagen H, Villemoes L, Klejsa J, Gorlow S. Parametric Joint Channel Coding of Immersive Audio. In: AES Convention 142. Audio Engineering Society; 2017. Paper 9740. Available from: https://aes.org/publications/elibrary-page/?id=18616

@inproceedings{Lehtonen2017_18616,
  author = {Lehtonen, Heidi-Maria and Purnhagen, Heiko and Villemoes, Lars and Klejsa, Janusz and Gorlow, Stanislaw},
  title = {{Parametric Joint Channel Coding of Immersive Audio}},
  booktitle = {AES Convention 142},
  note = {Paper 9740},
  year = {2017},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=18616}
}

TY  - CPAPER
TI  - Parametric Joint Channel Coding of Immersive Audio
AU  - Lehtonen, Heidi-Maria
AU  - Purnhagen, Heiko
AU  - Villemoes, Lars
AU  - Klejsa, Janusz
AU  - Gorlow, Stanislaw
T2  - AES Convention 142
M1  - Paper 9740
PY  - 2017
DA  - 2017/05/06
UR  - https://aes.org/publications/elibrary-page/?id=18616
PB  - Audio Engineering Society
LA  - en
AB  - This paper presents a parametric joint channel coding scheme that enables the delivery of channel-based immersive audio content in formats such as 7.1.4, 5.1.4, or 5.1.2 at very low bit rates. It is based on a generalized approach for parametric spatial coding of groups of two, three, or more channels using a single downmix channel together with a compact parametrization that guarantees full covariance re-instatement in the decoder. By arranging the full-band channels of the immersive content into five groups, the content can be conveyed as a 5.1 downmix together with the parameters for each group. This coding scheme is implemented in the A-JCC tool of the AC-4 system recently standardized by ETSI, and listening test results illustrate its performance.
ER  -