水平面音像定位実験中の頭部運動  [in Japanese] Head Movements during Horizontal Sound Localization Experiment  [in Japanese]

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Abstract

本報告では、帯域通過雑音を用いた水平面音像定位実験中の被験者の頭部の動きを計測した。被験者は4名で、全ての被験者それぞれに1440回刺激音を呈示した。被験者には3秒間の刺激音呈示中は頭部を保持するように教示した。しかし、3秒間の刺激音間隔に被験者は知覚した音像位置を解答用紙に記入するために頭部を動かした。その結果、刺激音呈示ごとの平均頭部位置(x、y、z)の変化は±3.5 cm以下であった。平均頭部角度(roll、pitch、yaw)の変化は±12°以下であった。しかし、水平面音像定位実験に最も重要な頭部のyaw回転角の平均は1.1°以下であった。一方、刺激音呈示中の頭部位置の最大変位は1.5cm以下、頭部角度の最大変位は3°以下であった。頭部のyaw回転角は1.4°以下であった。これらの結果、全ての被験者は教示を守り、刺激音呈示中は頭部をしっかり保持していた。さらに、全ての被験者は、次の刺激音が呈示されるときには、頭部を元の位置に戻していた。

In this work, head movements for four human subjects were measured simultaneously by horizontal sound localization experiments with band-pass noise for 1440 trials in total for each subject. Subjects were instructed to hold their heads still while each 3-s stimulus was presented. They, however, moved their heads to mark the perceived sound location on an answer sheet during the 3-s inter stimulus interval. Results showed that the variations of the mean head-position in x, y, z axes during the stimulus presentation were less than ±3.5 cm. The variation of the mean head-angle in roll, pitch, yaw angles were less than ±12 degrees. That of the mean yaw-angle of the heads, which should be most crucial for horizontal sound localization experiment, however, was less than ±1.1 degrees. On the other hand, the maximum all head-position shifts during the stimulus presentation were less than 1.5 cm, and the maximum all head-angle shifts were less than 3 degrees. That of the yaw-angle of the heads was less than 1.4 degrees. These results clarified that all subjects followed the instruction and kept their head fairly while each stimulus was presented. Further, it was also confirmed that all subjects firmly returned their head to the proper listening position no later than the next stimulus was played back.

Journal

  • IEICE technical report

    IEICE technical report 110(239), 73-78, 2010-10-14

    The Institute of Electronics, Information and Communication Engineers

References:  9

Codes

  • NII Article ID (NAID)
    110008107133
  • NII NACSIS-CAT ID (NCID)
    AN10164817
  • Text Lang
    JPN
  • Article Type
    ART
  • ISSN
    09135685
  • NDL Article ID
    10882383
  • NDL Source Classification
    ZN33(科学技術--電気工学・電気機械工業--電子工学・電気通信)
  • NDL Call No.
    Z16-940
  • Data Source
    CJP  NDL  NII-ELS 
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