Array signal processing with two outputs preserving binaural information

作     者：Nishimura, R Suzuki, Y Tsukui, S Asano, F 

作者机构：Tohoku Univ Res Inst Elect Commun Aoba Ku Sendai Miyagi 9808577 Japan NTT Corp Naka Ku Yokohama Kanagawa 2310032 Japan AIST Tsukuba Ibaraki 3058568 Japan 

出 版 物：《APPLIED ACOUSTICS》 (应用声学)

年 卷 期：2004年第65卷第7期

页      面：657-672页

核心收录：

学科分类：07[理学] 082403[工学-水声工程] 08[工学] 070206[理学-声学] 0824[工学-船舶与海洋工程] 0702[理学-物理学] 

基　　金：ATR Media Integration & Communications Research Laboratories Ministry of Education, Culture, Sports, Science and Technology, MEXT Hoso Bunka Foundation, HBF 

主　　题：binaural hearing microphone array weighted least squares algorithm constraint algorithm 

摘      要：A new type of array signal processing combined with a weighted least squares algorithm to enable two-channel output with binaural information is proposed in this paper. This algorithm may be effective for use in a binaural hearing aid because the interaural relationship can be preserved after array signal processing. Retaining spatial information on specified directions while sufficiently suppressing unnecessary ambient noise coming from directions other than those of target sounds is required for this type of algorithm. In order to satisfy these two simultaneous requirements, the proposed algorithm was derived from a constraint algorithm by employing the weighted least squares algorithm. Performance in directivity patterns as well as interaural time difference (ITD) and interaural level difference (ILD) were evaluated. Computer simulations showed that this algorithm yields robust performance in various conditions compared with array signal processing based on a constraint algorithm. (C) 2004 Elsevier Ltd. All rights reserved.