OVERLAPPING SPEECH SEPARATION BY REPEATING PITCH ADDING

作     者：WANG Tian, ZHAO Shuqing College of infonnation science and technology, Beijing University of Chemical Technology, Beijing, 100029, China College of information science and technology, Beijing University of Chemical Technology, Beijing, 100029, China 

会议名称：《第八届全国人机语音通讯学术会议》

会议日期：2005年

学科分类：0711[理学-系统科学] 07[理学] 

关 键 词：Speech enhancement Speech separation Pitch detecting 

摘      要：An algorithm to separate overlapping speech signals is proposed in the paper. The first step of the algorithm is to detect the pitch of overlapping speech signals. The second step, the key of the method, is repeating pitch adding, which is done by adding the overlapping speech and the next period of it. And the last step is to judge the adscription of each formant of the overlapping speech. By making a little change to this algorithm, a similar method called repeating pitch subtracting is also proposed. Finally, some experiments for evaluating the performance of the algorithms are made. The input signals of these experiments include single word, double words and long sentences.