technique期刊最新论文

The necessity for accurate speech recognition systems capableof handling adverse environments with multiple speakershas in recent years fueled speech separation and enhancementresearch [1, 5, 3, 2, 6, 4]. This has resulted in numeroustechniques with varying degrees of success, most ofwhich employ multiple microphones [1, 3, 2, 6, 4]. Beamformingtechniques, for example, utilize knowledge aboutthe direction of the speech source of interest in order to reducenoise from other directions. The resulting SNR gainis significant as long as a large number of microphones areavailable [6, 4]. Independent Component Analysis (ICA),on the other hand, is capable of producing large SNR gainswith few microphones [1, 3]. However, ICA has severallimitations that have hampered its application in real-worldsituations [1, 6].Interestingly, both of these popular techniques (as wellas many other speech separation techniques) are similar inthe sense that they are not specifically designed to functionfor speech signals. Speech has certain characteristics whoseutilization can provide a significant edge in the de-noisingand signal separation tasks [2, 5].In this paper, we extend the phase error filtering techniqueinitially proposed in [2] to include the magnitudesof the two microphones in addition to the phase technique transforms two noisy time-domain signalsrecorded by two microphones into their time-frequency(TF) representations. For each time-frequency componentor block, a phase-error measure is derived from the informationin both microphones. Based on this, the time-frequencyblock for each microphone is scaled by a masking value betweenzero and one. Basically, TF blocks with large phaseerrorsare ‘punished’ by a small mask value (0) and TFblocks with small phase-errors are ‘rewarded’ by a largemask value (1).In the following sections, we formulate four different TFmasks and analyze them theoretically, through SNR-gainsimulations, and digit recognition experiments.

字个期刊挺牛B的，收录的挺多的 本刊收录在Web of Science： SCIE(2009版) 本刊收录在Web of Science： SCIE(2012版) 本刊收录在： 中国科学引文数据库(CSCD)来源期刊(2009-2010) 备注:CSCD核心库(C) 本刊收录在： 中国科学引文数据库(CSCD)来源期刊核心库(2011-2012) 点击: 查看SCI影响因子(2009) 备注:Impact Factor:; 5-Year Impact Factor: 点击: 查看SCI影响因子(2010) 备注:Impact Factor: ; Rank: 7469 其它版本: 核技术 [0253-3219] 本刊收录在： 中国科学引文数据库(CSCD)来源期刊(2009-2010) 备注:CSCD核心库(C) 本刊收录在： 中国科学引文数据库(CSCD)来源期刊核心库(2011-2012) 本刊收录在： 中国科技期刊引证报告(2010年版) 备注:《引证报告》2010年版影响因子: 本刊收录在： 中国科技期刊引证报告(2011年版) 备注:《引证报告》2011年版影响因子: 本刊收录在： 中文核心期刊要目总览(2008年版) 备注:排序：原子能技术 - 第6位 本刊收录在： 中文核心期刊要目总览(2011年版) 报告失效链接 谢谢报告失效链接

Title: Strategic Property Management: How Can Local Authorities Develop a Property Strategy?Author(s):Virginia GibsonJournal:Property ManagementYear:1994 Volume:12 Issue:3 Page:9 - 14DOI: : MCB UP Ltd之类的给你发你邮箱了记得查收哦~~~~~记得加分^_^