1 一方の耳に恒常的な熱ノイズ,もう一方の耳にパルス式熱ノイズによる局所効果
Science (New York, N.Y.)
|September 1, 1961
まとめ
片方の耳で脈拍の持続時間や繰り返しの頻度が増加し,もう片方の耳で安定した騒音が発生すると,感知される音の位置が中心に向かって変化します. さらに増幅すると,騒音が薄れ,すべての音が中途半端に局所される.
科学分野:
- 聴覚的知覚とは,聴覚の知覚である.
- サイコアコースティクス サイコアコースティクス
- バイナウラル・ヒアリング
背景:
- バイナウラル聴覚は,音の局所化のために,音間時間と強度の違いに依存しています.
- パルス特性の知覚された空間的聴覚位置に対する影響は,完全に理解されていません.
研究 の 目的:
- 聴覚脈拍の持続時間と繰り返しの頻度の変化が音の局所化にどのように影響するか調査する.
- 刺激パラメータと聴覚イベントの知覚された空間的シフトの間の関係を決定する.
主な方法:
- 参加者は,バイナウラルで提示された聴覚刺激を聞きました.
- 左耳のパルスの持続時間と繰り返しの頻度は,体系的に変化した.
- 安定した,相内の熱ノイズが右耳に提示されました.
主要な成果:
- 左耳で脈拍の持続時間または繰り返しの頻度が増加すると,知覚された音が中位平面に向かってシフトする.
- 延長された期間では,右耳の騒音の強さは著しく減少しました.
- 中央平面での完全な局所化は,十分に長いパルス持続で達成されました.
結論:
- 聴覚パルス特性は,空間的な聴覚知覚を調節する上で重要な役割を果たします.
- 観察された局所化と音量減少のシフトは,バイナウラル聴覚系内の複雑な相互作用を示唆しています.
- これらの発見は,音の局所化と聴覚的なシーン分析の基礎となるメカニズムをより深く理解するのに寄与します.
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