Spatial Auditory Masking for Three-Dimensional Audio Coding

Nishiguchi M, Kato K, Watanabe K, Abe K, Takane S. Spatial Auditory Masking for Three-Dimensional Audio Coding. In: AES Convention 147. Audio Engineering Society; 2019. Paper 10259. Available from: https://aes.org/publications/elibrary-page/?id=20632

@inproceedings{Nishiguchi2019_20632,
  author = {Nishiguchi, Masayuki and Kato, Kodai and Watanabe, Kanji and Abe, Koji and Takane, Shouichi},
  title = {{Spatial Auditory Masking for Three-Dimensional Audio Coding}},
  booktitle = {AES Convention 147},
  note = {Paper 10259},
  year = {2019},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=20632}
}

TY  - CPAPER
TI  - Spatial Auditory Masking for Three-Dimensional Audio Coding
AU  - Nishiguchi, Masayuki
AU  - Kato, Kodai
AU  - Watanabe, Kanji
AU  - Abe, Koji
AU  - Takane, Shouichi
T2  - AES Convention 147
M1  - Paper 10259
PY  - 2019
DA  - 2019/10/06
UR  - https://aes.org/publications/elibrary-page/?id=20632
PB  - Audio Engineering Society
LA  - en
AB  - Spatial auditory masking effects have been examined for developing highly efficient audio coding algorithms for signals in three-dimensional (3D) sound fields. Generally, the masking threshold level is lowered according to the increase of the directional difference between masker and maskee signals. However, we found that when a maskee signal is located at the symmetrical position of the masker signal with respect to the frontal plane of a listener, the masking threshold level is not lowered, which counters the expectations. A mathematical model is proposed to estimate the masking threshold caused by multiple masker signals in the 3D sound field. Using the model, the perceptual entropy of a tune from a two channel stereo CD was reduced by approximately 5.5%.
ER  -