Efficient Combination of Acoustic Echo Control and Parametric Spatial Audio Coding

Kuech F, Schmidt M, Zourub M. Efficient Combination of Acoustic Echo Control and Parametric Spatial Audio Coding. In: AES Convention 128. Audio Engineering Society; 2010. Paper 8100. Available from: https://aes.org/publications/elibrary-page/?id=15397

@inproceedings{Kuech2010_15397,
  author = {Kuech, Fabian and Schmidt, Markus and Zourub, Meray},
  title = {{Efficient Combination of Acoustic Echo Control and Parametric Spatial Audio Coding}},
  booktitle = {AES Convention 128},
  note = {Paper 8100},
  year = {2010},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=15397}
}

TY  - CPAPER
TI  - Efficient Combination of Acoustic Echo Control and Parametric Spatial Audio Coding
AU  - Kuech, Fabian
AU  - Schmidt, Markus
AU  - Zourub, Meray
T2  - AES Convention 128
M1  - Paper 8100
PY  - 2010
DA  - 2010/05/06
UR  - https://aes.org/publications/elibrary-page/?id=15397
PB  - Audio Engineering Society
LA  - en
AB  - High-quality teleconferencing systems utilise surround sound to provide natural communication experience. Directional Audio Coding (DirAC) is an efficient parametric approach to capture and reproduce spatial sound. It uses a monophonic audio signal together with parametric spatial cue information. For reproduction, multiple loudspeaker signals are determined based on the DirAC stream. To allow for hands-free operation, multi-channel acoustic echo control (AEC) has to be employed. Standard approaches apply multi-channel adaptive filtering to address this problem. However, computational complexity constraints and convergence issues inhibit practical applications. This paper proposes an efficient combination of AEC and DirAC by explicitly exploiting its parametric sound field representation. The approach suppresses the echo components in the microphone signals solely based on the single channel audio signal used for the DirAC synthesis of the loudspeaker signals.
ER  -