3つの一般的に使用される補聴器回路の有効性:クロスオーバー試験. NIDCD/VA 助聴器臨床試験グループ
V D Larson1, D W Williams, W G Henderson
1Howard Leight Industries, 7828 Waterville Rd, San Diego, CA 92154, USA. vlarson@howardleight.com
JAMA
|October 12, 2000
まとめ
この研究では,3つの補聴器回路がすべて,音声認識を改善し,感覚神経聴力障害のコミュニケーションの困難を軽減することを発見しました. 圧縮制限器 (CL) とワイドダイナミックレンジコンプレッサー (WDRC) の回路は,線形ピーククリッパー (PC) の回路よりも優れた利点を提供しました.
科学分野:
- オーディオロジー オーディオロジー
- 聴覚科学 聴覚科学とは
- バイオメディカルエンジニアリング
背景:
- 補聴器は,感覚神経性聴覚障害に対して大きな利点をもたらします.
- 補聴器回路の有効性を比較した以前の多センター試験は実施されていません.
研究 の 目的:
- 感覚神経性聴力障害に対する3つの一般的な補聴器回路の利点を比較する.
- 異なる回路における音声認識,音質,主観的な利益を評価する.
主な方法:
- 360人の患者を対象とした3期,3治療のクロスオーバー試験.
- 患者は,それぞれ3ヶ月間,線形ピーククリッパー (PC),圧縮制限器 (CL) および広域動力圧縮器 (WDRC) の回路を受け取りました.
- 結果には,音声認識テスト,音質評価,患者による報告された効果が含まれていました.
主要な成果:
- すべての回路は,静かで騒々しい環境で音声認識を大幅に改善しました.
- CLおよびWDRC回路は,PC回路よりも文字認識,音量認識,音質の優位性を示した.
- ランクオーダーの評価では,WDRCとPC回路よりも,CL回路の方が患者さんの好みでした.
結論:
- すべてのテストされた補聴器回路は,感覚神経性聴力障害のある個人に実質的な利点を提供します.
- 圧縮制限器 (CL) とワイドダイナミックレンジコンプレッサー (WDRC) の回路は,線形ピーククリッパー (PC) の回路と比較して優れた性能を示した.
- 補助状態と無補助状態の違いは,回路自体の違いよりも顕著でした.
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