Investigation on Balanced-Delay Filter-Bank for Encoding Multi-Channel Audio Signals

Elfitri I, Fauzan RY, Luthfi A. Investigation on Balanced-Delay Filter-Bank for Encoding Multi-Channel Audio Signals. In: AES Convention 148. Audio Engineering Society; 2020. Paper 595. Available from: https://aes.org/publications/elibrary-page/?id=20833

@inproceedings{Elfitri2020_20833,
  author = {Elfitri, Ikhwana and Fauzan, Reski Yulian and Luthfi, Amirul},
  title = {{Investigation on Balanced-Delay Filter-Bank for Encoding Multi-Channel Audio Signals}},
  booktitle = {AES Convention 148},
  note = {Paper 595},
  year = {2020},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=20833}
}

TY  - CPAPER
TI  - Investigation on Balanced-Delay Filter-Bank for Encoding Multi-Channel Audio Signals
AU  - Elfitri, Ikhwana
AU  - Fauzan, Reski Yulian
AU  - Luthfi, Amirul
T2  - AES Convention 148
M1  - Paper 595
PY  - 2020
DA  - 2020/05/06
UR  - https://aes.org/publications/elibrary-page/?id=20833
PB  - Audio Engineering Society
LA  - en
AB  - Various MPEG audio standards, such as MPEG Surround, MPEG Advanced Audio Coding (AAC), MPEG Spatial Audio Object Coding (SAOC) as well as MPEG-H 3D Audio, employ a similar powerful hybrid filter-bank. Even though the filter-bank introduces an unbalanced delay, the overall filter distortion is very low. However, when MPEG Surround encodes multi-channel audio, such as 22.2 channels, the whole filter-bank structure can form a multi-layer filtering. In this paper, we investigate a case of balancing the delay for minimizing the overall filter distortion. The results of the experiments using 22.2 multi-channel audio signals show that the proposed balanced-delay filter-bank is capable of increasing the Signal-to-Noise Ratio up to 8 dB.
ER  -