Adaptive Karhunen-Lòeve Transform for Multichannel Audio

Jiao Y, Zielinski S, Rumsey F. Adaptive Karhunen-Lòeve Transform for Multichannel Audio. In: AES Convention 123. Audio Engineering Society; 2007. Paper 7298. Available from: https://aes.org/publications/elibrary-page/?id=14355

@inproceedings{Jiao2007_14355,
  author = {Jiao, Yu and Zielinski, Slawomir and Rumsey, Francis},
  title = {{Adaptive Karhunen-Lòeve Transform for Multichannel Audio}},
  booktitle = {AES Convention 123},
  note = {Paper 7298},
  year = {2007},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=14355}
}

TY  - CPAPER
TI  - Adaptive Karhunen-Lòeve Transform for Multichannel Audio
AU  - Jiao, Yu
AU  - Zielinski, Slawomir
AU  - Rumsey, Francis
T2  - AES Convention 123
M1  - Paper 7298
PY  - 2007
DA  - 2007/10/06
UR  - https://aes.org/publications/elibrary-page/?id=14355
PB  - Audio Engineering Society
LA  - en
AB  - In previous works, the authors proposed a hierarchical bandwidth limitation technique based on the Karhunen-Lòeve Transform (KLT) to reduce the bandwidth for multichannel audio transmission. The subjective results proved that this technique could be used to reduce the overall bandwidth without significant audio quality degradation. Further study found that the transform matrix varied considerably over time for many recordings. In this paper, the KLT matrix was calculated based on short-term signals and updated adaptively over time. The perceptual effects of the adaptive KLT process were studied using a series of listening tests. The results showed that adaptive KLT resulted in better spatial quality than non-adaptive KLT but introduced some other artefacts.
ER  -