Phonemic restoration of interrupted locally time-reversed speech

DOI 機関リポジトリ (HANDLE) PDF Web Site PubMed 研究データあり 被引用文献5件 参考文献32件 オープンアクセス
  • 上田, 和夫
    九州大学大学院芸術工学研究院デザイン人間科学部門知覚心理学 九州大学大学院芸術工学研究院附属応用知覚科学研究センター 九州大学五感応用デバイス研究開発センター
  • Ciocca, Valter
    School of Audiology and Speech Sciences, The University of British Columbia

書誌事項

タイトル別名
  • Phonemic restoration of interrupted locally time-reversed speech : Effects of segment duration and noise levels

この論文をさがす

説明

Intelligibility of temporally degraded speech was investigated with locally time-reversed speech (LTR) and its interrupted version (ILTR). Control stimuli comprising interrupted speech (I) were also included. Speech stimuli consisted of 200 Japanese meaningful sentences. In interrupted stimuli, speech segments were alternated with either silent gaps or pink noise bursts. The noise bursts had a level of −10, 0 or +10 dB relative to the speech level. Segment duration varied from 20 to 160 ms for ILTR sentences, but was fixed at 160 ms for I sentences. At segment durations between 40 and 80 ms, severe reductions in intelligibility were observed for ILTR sentences, compared with LTR sentences. A substantial improvement in intelligibility (30–33%) was observed when 40-ms silent gaps in ILTR were replaced with 0- and +10-dB noise. Noise with a level of −10 dB had no effect on the intelligibility. These findings show that the combined effects of interruptions and temporal reversal of speech segments on intelligibility are greater than the sum of each individual effect. The results also support the idea that illusory continuity induced by high-level noise bursts improves the intelligibility of ILTR and I sentences.

収録刊行物

被引用文献 (5)*注記

もっと見る

参考文献 (32)*注記

もっと見る

関連プロジェクト

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ