Auditory perception versus automatic estimation of location and orientation of an acoustic source in a real environment

• Nakano Alberto Yoshihiro

  Department of Computer Science and Engineering, Toyohashi University of Technology

• Nakagawa Seiichi

  Department of Computer Science and Engineering, Toyohashi University of Technology

• Yamamoto Kazumasa

  Department of Computer Science and Engineering, Toyohashi University of Technology

抄録

In this work, the perception of the position and orientation of a directional acoustic source in a real enclosed environment by blindfolded listeners is investigated and compared with a method that automatically estimates the position and orientation of the source using a T-shaped microphone array. In the subjective experiment using blindfolded listeners, a human speaker acted as an acoustic source and listeners judged the speaker’s facing angle (one out of four possible orientations shifted by 90^°) and position after listening to a spoken sentence. This procedure was performed twice, before and after a training phase. In the training, listeners were allowed to remove the blindfold and verify the speaker’s position and orientation. After the training, the correct orientation ratio increased from 75.0 to 76.5% and the average position error decreased from 66.2 to 60.6 cm. In addition, a subjective experiment on orientation estimation with eight orientations shifted by 45^° in the same real environment showed that orientation estimation in a real environment was more difficult than that in an anechoic environment. Artificial neural networks (ANNs) were used in the automatic estimation method. A correct orientation ratio of 68.1% and an average position error of 48.0 cm were obtained by the T-shaped microphone array located nearest to the blindfolded listener among an array network consisting of eight T-shaped microphone arrays, enabling a rough comparison between human auditory perception and the automatic estimation method (a correct orientation ratio of 67% and a better average position error of 38.6 cm were the best results obtained by a T-shaped array in the network). It was clarified that the automatic estimation method cannot surpass the auditory system in terms of correct orientation ratio; however, it yielded better results in terms of the average position error.

収録刊行物

• Acoustical Science and Technology

  Acoustical Science and Technology 31 (5), 309-319, 2010

  一般社団法人 日本音響学会

キーワード

• Auditory perception
• Automatic estimation
• Neural networks
• Position estimation
• Orientation estimation

詳細情報

• CRID: 1390001205088974336
• NII論文ID: 130000727276
• NII書誌ID: AA11501808
• DOI: 10.1250/ast.31.309
• ISSN: 13475177
• ISSN: 03694232
• ISSN: 13463969
• NDL書誌ID: 10800996
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I10800996
• Web Site: http://www.jstage.jst.go.jp/article/ast/31/5/31_5_309/_pdf
• 本文言語コード: en
• データソース種別:
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  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可