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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%.
Author (s): Nishiguchi, Masayuki; Kato, Kodai; Watanabe, Kanji; Abe, Koji; Takane, Shouichi
Affiliation:
Akita Prefectural University, Yurihonjo Akita, Japan
(See document for exact affiliation information.)
AES Convention: 147
Paper Number:10259
Publication Date:
2019-10-06
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Session subject:
Perception
Permalink: https://aes2.org/publications/elibrary-page/?id=20632
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Nishiguchi, Masayuki; Kato, Kodai; Watanabe, Kanji; Abe, Koji; Takane, Shouichi; 2019; Spatial Auditory Masking for Three-Dimensional Audio Coding [PDF]; Akita Prefectural University, Yurihonjo Akita, Japan; Paper 10259; Available from: https://aes2.org/publications/elibrary-page/?id=20632
Nishiguchi, Masayuki; Kato, Kodai; Watanabe, Kanji; Abe, Koji; Takane, Shouichi; Spatial Auditory Masking for Three-Dimensional Audio Coding [PDF]; Akita Prefectural University, Yurihonjo Akita, Japan; Paper 10259; 2019 Available: https://aes2.org/publications/elibrary-page/?id=20632
@article{nishiguchi2019spatial,
author={nishiguchi masayuki and kato kodai and watanabe kanji and abe koji and takane shouichi},
journal={journal of the audio engineering society},
title={spatial auditory masking for three-dimensional audio coding},
year={2019},
number={10259},
month={october},}