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)
発表年月日 2016/11/28
発表テーマ Low Latency Dereverberation with Considering Speech Naturalness for Hearing Aids
会議名 5th ASA and ASJ Joint Meeting
学会区分 国際学会
発表形式 ポスター
単独共同区分 共同
発表者・共同発表者 Kotoyo Nozaki, Yusuke Ikeda, Yasuhiro Oikawa, Y. Fujisaka and M. Sunohara
概要 It is well known that long reverberation makes speech unclear especially for hearing impaired. We have proposed the simplified dereverberation method, which can estimate reverberation energy from observed signal. In this study, we make two proposals in our previous method. First, we apply Frequency-Warped Filterbank (FWF) in analysis and synthesis systems in order to make frequency bands as Bark scaled alignment, and to take the tolerable latency all over frequency for hearing. Second, we introduce the gain control in each frequency to maintain naturalness of processed speech, because reverberation energy varies depending on frequency bands in actual reverberant environments. From subjective experiments, there was a tendency that they prefer this proposal to the previous method.