JP4166765B2 - 補聴器装用時の外耳道内音圧推定方法 - Google Patents
補聴器装用時の外耳道内音圧推定方法 Download PDFInfo
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- JP4166765B2 JP4166765B2 JP2005126178A JP2005126178A JP4166765B2 JP 4166765 B2 JP4166765 B2 JP 4166765B2 JP 2005126178 A JP2005126178 A JP 2005126178A JP 2005126178 A JP2005126178 A JP 2005126178A JP 4166765 B2 JP4166765 B2 JP 4166765B2
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- sound pressure
- vent
- hearing aid
- ear canal
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Description
ベントを設けることにより生じる音響特性への効果としては、ベントが低域周波数の音声を外耳道から逃がす効果(第1ベント効果)と、ベントが外耳道内に補聴器の増幅を行わずに音を到達させる効果(第2ベント効果)がある。
そこで、実耳のベント効果を厳密に予測するのは困難であるため、従来から補聴器装用状態におけるベント効果には、ベントの孔径毎に一律の値が適用され、共振は考慮されていない。
そこで、補聴器フィッティングのレベルを向上させるためにも、ベント効果(第1ベント効果と第2ベント効果)の予測値をより正確に求めることが要望されている。
先ず、ステップSP1において、図3乃至図5に示す音響回路の等価回路10,11,12の各定数を、耳あな形補聴器2のメモリ(ROM)又は調整プログラムから呼び出す。
Claims (2)
- ベントを有する補聴器を装用した時の外耳道内音圧を推定する方法であって、ベントを有する補聴器装着時の2つの等価回路とベントを有しない補聴器装着時の1つの等価回路に各定数を設定する回路定数設定工程と、前記3つの等価回路からベント経由で外耳道から逃げる音圧とベント経由で外耳道内に到達する音圧を夫々算出するベント効果算出工程と、ベントを塞いだ状態の補聴器の出力音圧に前記外耳道から逃げる音圧を減算して減衰外耳道内音圧を算出する減衰外耳道内音圧算出工程と、この減衰外耳道内音圧と前記ベント経由で外耳道内に到達する音圧を加算して実際の外耳道内音圧を算出する外耳道内音圧算出工程からなることを特徴とする補聴器装用時の外耳道内音圧推定方法。
- 前記等価回路の定数は、補聴器のメモリ又は調整プログラムから呼び出す請求項1記載の補聴器装用時の外耳道内音圧推定方法。
Priority Applications (1)
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JP2005126178A JP4166765B2 (ja) | 2005-04-25 | 2005-04-25 | 補聴器装用時の外耳道内音圧推定方法 |
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JP2005126178A JP4166765B2 (ja) | 2005-04-25 | 2005-04-25 | 補聴器装用時の外耳道内音圧推定方法 |
Publications (2)
Publication Number | Publication Date |
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JP2006304153A JP2006304153A (ja) | 2006-11-02 |
JP4166765B2 true JP4166765B2 (ja) | 2008-10-15 |
Family
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JP2005126178A Expired - Fee Related JP4166765B2 (ja) | 2005-04-25 | 2005-04-25 | 補聴器装用時の外耳道内音圧推定方法 |
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JP (1) | JP4166765B2 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100963139B1 (ko) | 2008-02-25 | 2010-06-15 | 한국과학기술원 | 디지털 보청기 |
US9571941B2 (en) * | 2013-08-19 | 2017-02-14 | Knowles Electronics, Llc | Dynamic driver in hearing instrument |
CN109195045B (zh) * | 2018-08-16 | 2020-08-25 | 歌尔科技有限公司 | 检测耳机佩戴状态的方法、装置及耳机 |
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2005
- 2005-04-25 JP JP2005126178A patent/JP4166765B2/ja not_active Expired - Fee Related
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