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독립성분분석을 이용한 디지털 보청기용 적응형 궤환 제거
지윤상,이상민,정세영,김인영,김선일,Ji, Yoon-Sang,Lee, Sang-Min,Jung, Sae-Young,Kim, In-Young,Kim, Sun-I 한국음성학회 2005 음성과학 Vol.12 No.3
Acoustic feedback between microphone and receiver can be effectively cancelled adaptive feedback cancellation algorithm. Although many speech sounds have non-Gaussian distribution, most algorithms were tested with speech like sounds whose distribution were Guassian type. In this paper, we proposed an adaptive feedback cancellation algorithm based on independent component analysis (ICA) for digital hearing aid. The algorithm was tested with not only Gaussian distribution but also Laplacian distribution. We verified that the proposed algorithm has better acoustic feedback cancelling performance than conventional normalized root mean square (NLMS) algorithm, especially speech like sounds with Laplacian distribution.