Frequency-Domain Two- To Three-Channel Upmix for Center Channel Derivation and Speech Enhancement

Vickers E. Frequency-Domain Two- To Three-Channel Upmix for Center Channel Derivation and Speech Enhancement. In: AES Convention 127. Audio Engineering Society; 2009. Paper 7917. Available from: https://aes.org/publications/elibrary-page/?id=15112

@inproceedings{Vickers2009_15112,
  author = {Vickers, Earl},
  title = {{Frequency-Domain Two- To Three-Channel Upmix for Center Channel Derivation and Speech Enhancement}},
  booktitle = {AES Convention 127},
  note = {Paper 7917},
  year = {2009},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=15112}
}

TY  - CPAPER
TI  - Frequency-Domain Two- To Three-Channel Upmix for Center Channel Derivation and Speech Enhancement
AU  - Vickers, Earl
T2  - AES Convention 127
M1  - Paper 7917
PY  - 2009
DA  - 2009/10/06
UR  - https://aes.org/publications/elibrary-page/?id=15112
PB  - Audio Engineering Society
LA  - en
AB  - Two- to three-channel audio upmix can be useful in a number of contexts. Adding a front center loudspeaker provides a more stable center image and an increase in dialogue clarity. Even in the absence of a physical center speaker, the ability to derive a center channel can facilitate speech enhancement by making it possible to boost or filter the dialogue, which is usually panned to the center. Two- to three-channel upmix can also be a first step in upmixing from two to five channels. We propose a frequency-domain upmix process using a vector-based signal decomposition, including methods for improving the selectivity of the center channel extraction. A geometric interpretation of the algorithm is provided. Unlike most existing frequency-domain upmix methods, the current algorithm does not perform an explicit primary/ambient decomposition. This reduces the complexity and improves the quality of the center channel derivation.
ER  -