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Please use this identifier to cite or link to this item: http://hdl.handle.net/10119/5070

Title: A Two-Microphone Noise Reduction Method in Highly Non-stationary Multiple-Noise-Source Environments
Authors: LI, Junfeng
AKAGI, Masato
Keywords: noise reduction
non-stationary noise
multiple-noise-source environments
virtually integrated sound source
Issue Date: 2008-06-01
Publisher: 電子情報通信学会
Magazine name: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Volume: E91-A
Number: 6
Start page: 1337
End page: 1346
DOI: 10.1093/ietfec/e91-a.6.1337
Abstract: In this paper, we propose a two-microphone noise reduction method to deal with non-stationary interfering noises in multiple-noise-source environments in which the traditional two-microphone algorithms cannot function well. In the proposed algorithm, multiple interfering noise sources are regarded as one virtually integrated noise source in each subband, and the spectrum of the integrated noise is then estimated using its virtual direction of arrival. To do this, we suggest a direction finder for the integrated noise using only two microphones that performs well even in speech active periods. The noise spectrum estimate is further improved by integrating a single-channel noise estimation approach and then subtracted from that of the noisy signal, finally enhancing the desired target signal. The performance of the proposed algorithm is evaluated and compared with the traditional algorithms in various conditions. Experimental results demonstrate that the proposed algorithm outperforms the traditional algorithms in various conditions in terms of objective and subjective speech quality measures.
Rights: Copyright (C)2008 IEICE. Junfeng LI, Masato AKAGI, Yoiti SUZUKI, IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences, E91-A(6), 2008, 1337-1346. http://www.ieice.org/jpn/trans_online/
URI: http://hdl.handle.net/10119/5070
Material Type: publisher
Appears in Collections:b10-1. 雑誌掲載論文 (Journal Articles)

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