Perceptual Compression Methods for Metadata in Directional Audio Coding Applied to Audiovisual Teleconference

Hirvonen T, Ahonen J, Pulkki V. Perceptual Compression Methods for Metadata in Directional Audio Coding Applied to Audiovisual Teleconference. In: AES Convention 126. Audio Engineering Society; 2009. Paper 7706. Available from: https://aes.org/publications/elibrary-page/?id=14902

@inproceedings{Hirvonen2009_14902,
  author = {Hirvonen, Toni and Ahonen, Jukka and Pulkki, Ville},
  title = {{Perceptual Compression Methods for Metadata in Directional Audio Coding Applied to Audiovisual Teleconference}},
  booktitle = {AES Convention 126},
  note = {Paper 7706},
  year = {2009},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=14902}
}

TY  - CPAPER
TI  - Perceptual Compression Methods for Metadata in Directional Audio Coding Applied to Audiovisual Teleconference
AU  - Hirvonen, Toni
AU  - Ahonen, Jukka
AU  - Pulkki, Ville
T2  - AES Convention 126
M1  - Paper 7706
PY  - 2009
DA  - 2009/05/06
UR  - https://aes.org/publications/elibrary-page/?id=14902
PB  - Audio Engineering Society
LA  - en
AB  - In teleconferencing application of Directional Audio Coding, the transmitted data consists of monophonic audio signal and directional metadata measured in frequency bands depending on time. In reproduction, each frequency channel of the signal is reproduced to corresponding direction with corresponding diffuseness. This paper examines methods for reducing the data rate of the metadata. The compression methods are based on psychoacoustic studies about the accuracy of directional hearing, and further developed and validated. Informal tests with one-way reproduction, as well as usability testing where an actual teleconference was arranged, were utilized for this purpose. The results indicate that the data rate can be as low as approx. 3 kbit/s without a significant loss in the reproduced spatial quality.
ER  -