イケダ ユウスケ   IKEDA Yusuke
  池田 雄介
   所属   東京電機大学大学院  未来科学研究科 情報メディア学専攻
   職種   助教(A)
言語種別 英語
発行・発表の年月 2018/01
形態種別 学術研究論文
査読 査読有り
標題 Hat-type hearing aid system with flexible sound directivity pattern
執筆形態 共著
掲載区分国内
出版社・発行元 Acoustical Society of Japan
巻・号・頁 39(1),pp.22-29
著者・共著者 Takayuki Inoue, Yusuke Ikeda, Yasuhiro Oikawa
概要 For speech communication, it is useful to emphasise the sound coming from a target direction. A large-scale microphone array enables a flexible design of the directivity pattern. However, it is difficult to implement a large-sale microphone array onto an ear-type hearing aid system. In this paper, we propose a hat-type hearing aid system composed of 48 MEMS microphones that can increase the flexibility of the sound directivity pattern. We found that it is possible to reduce the number of microphones to be used by considering the hat effect, without affecting the system performance. By compensating the time delays and reducing the number of microphones based on impulse response measurements, the directivity range of the sound directivity pattern was improved by 5 dB. In addition, we conducted a qualitative evaluation that resulted in an intelligibility improvement when using our hearing aid system.