foとSPLの視覚フィードバックの評価 サブグロータル圧力測定 - 方法論的研究
Anna Lundblad1, Maria Södersten2, Svante Granqvist3
1Department of Otorhinolaryngology, Region Västra Götaland, Sahlgrenska University Hospital, SE-413 45 Gothenburg, Sweden; Department of Clinical Science, Intervention and Technology (CLINTEC), Division of Speech and Language Pathology, Karolinska Institutet, SE-171 76, Stockholm, Sweden; Medical Unit Allied Health Professionals, Section Speech and Language Pathology, Karolinska University Hospital, SE-141 86 Stockholm, Sweden.
Journal of voice : official journal of the Voice Foundation
|September 5, 2025
まとめ
視覚フィードバックは,通常の声で音圧レベル (SPL) の制御を改善することによって,血球下圧 (SP) の測定を助けます. 基本的な周波数 (f0) の制御を向上させる一方で,f0の信頼性に対する全体的な影響は異なる.
科学分野:
- 言語科学
- 音声制作
- 臨床的な測定
背景:
- 声帯下圧 (SP) は,基本周波数 (f0) と音圧レベル (SPL) と相関する声障害の評価に不可欠です.
- 正確なSP測定は,音声障害の信頼性の高い評価に不可欠です.
- 現在の方法には十分な信頼性が欠けており,改善された測定技術が必要である.
研究 の 目的:
- f0とSPLの視覚フィードバックの効果を評価する.
- 習慣的な声のSP測定と音声の値を比較する.
- 音節文字列とフレーズのSP測定の信頼性への影響を評価する.
主な方法:
- 12人の健康な女性が参加し,SPは様々な条件で測定されました:習慣的な声と音声の値,音節文字列とフレーズ,そして視覚的なf0 / SPLフィードバックとなし.
- 評価者内と評価者間の信頼性は2人の独立した評価者によって計算された.
- データ分析は,SP測定の有効性と信頼性に重点を置いた.
主要な成果:
- 慣習的な声については,実質的に有効なSPデータが得られたが,発音の値については,それほど有効ではなかった.
- 音節文字列とフレーズの間で,SP測定の有意な差異は観察されなかった.
- 視覚的フィードバックは,通常の声でSPL制御を改善しましたが,音声の値で限られた利益を示しました. 驚くべきことに,視覚的フィードバックなしで10/12の参加者がターゲットf0によりよく一致しました.
結論:
- 視覚的フィードバックは,特に通常の声でSPL制御のために,血圧下測定の信頼性を改善する可能性を示している.
- 基本周波数制御への影響は混在しており,大きな偏差がある場合は改善するが,小さな偏差がある場合はわずかに阻害する.
- この視覚的フィードバックのテクニックをさらに研究することで,異なる声のタスクや状態でより一貫したSP測定が可能になります.
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