A Clinical Study of Digital Feedback Hearing Aids in Severely Deaf Children.

• Hazama Michio

  Wakayama Shin-Ai Women's Jr. College Department of Otolaryngology, Japanese Red Cross Society Wakayama Medical Center

• Sakoda Takema

  Department of Otolaryngology, Japanese Red Cross Society Wakayama Medical Center

• Fujimura Satoshi

  Department of Otolaryngology, Japanese Red Cross Society Wakayama Medical Center

• Saitoh Yuko

  Department of Otolaryngology, Japanese Red Cross Society Wakayama Medical Center

• Dake Yoshihiro

  Department of Otolaryngology, Japanese Red Cross Society Wakayama Medical Center

• Enomoto Tadao

  Department of Otolaryngology, Japanese Red Cross Society Wakayama Medical Center

Bibliographic Information

Other Title

• 小児高度感音難聴症例に対するデジタル・フィードバック補聴器の臨床効果

Abstract

The Degital feedback suppresion (DFS) system to reduce acoustic feedback has been developed recently and was originally reported by Itami in 1992 in Japan. It was evaluated that how much hearing gain could be accessed by the elimination of the acoustic feedback as a result of the application of the DFS system. Fifteen profoundly head-of-hearing children whose auditory thresholds were beyond 90dB were selected, and mesurements on 26 ears were carried out. Median values of the auditory thresholds was 106.3dB. Functional insertion gain measured at 1, 2 and 4kHz was 10.5dB, 12.0dB and 19.2dB respectively.<br>Observation of the scene of aural comprehension showed improvement of the perception of environmental sounds distant from 1 to 2 meters and conversation.<br>Application of the DFS system for 6 months showed the increase of the amount of phonation and improvement of the intonation but speech discrimination by the developmental test.<br>There was no case that showed deterioration of hearing level using the DFS system. Application of the DFS system was valuable for the cases that could not obtain a sufficient hearing gain with traditional hearing aid.

Journal

• AUDIOLOGY JAPAN

  AUDIOLOGY JAPAN 42 (6), 717-721, 1999

  Japan Audiological Society

Keywords

• DFS

Details

• CRID: 1390282679814836864
• NII Article ID: 130003713002
• NII Article ID: 10008448681
• NII Book ID: AN00000347
• DOI: 10.4295/audiology.42.717
• ISSN: 18837301
• ISSN: 03038106
• Web Site: https://search.jamas.or.jp/link/ui/2000157139
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed