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1. 发明申请

WO2005024788A9 SIGNAL SEPARATION METHOD, SIGNAL SEPARATION DEVICE, SIGNAL SEPARATION PROGRAM, AND RECORDING MEDIUM 审中-公开
标题翻译：信号分离方法，信号分离装置，信号分离程序和记录介质
公开(公告)号：WO2005024788A9
公开(公告)日：2007-05-18
申请号：PCT/JP2004012629
申请日：2004-09-01
申请人： NIPPON TELEGRAPH & TELEPHONE , ARAKI SHOKO , SAWADA HIROSHI , MAKINO SHOJI , MUKAI RYO
发明人： ARAKI SHOKO , SAWADA HIROSHI , MAKINO SHOJI , MUKAI RYO
IPC分类号： G10L21/02 , G06K9/62
CPC分类号： G10L21/0272 , G06K9/6245
摘要： When the number of signal sources N and the number of sensors M is in the relationship of N > M, a mixed signal can be separated with a high quality. Firstly, a value of an observed signal which has been observed in the sensor is converted in a signal value of a frequency region. By using the signal value in the frequency region, a relative value of the observed value between the sensors is calculated for each frequency. Next, each relative value is clustered into N classes and a representative value of each class is calculated. By using the representative values, a mask is created for extracting a value of a signal transmitted from the V (1 = V = M) signal sources. By using this mask, a value of the signal transmitted from the V signal sources is extracted from the signal value of the aforementioned frequency region. After this, if V = 1, the limit signal is directly outputted as a separation signal and if V = 2, ICA or the like is applied to the limit signal so as to obtain a separation signal.
摘要翻译：当信号源N的数量和传感器M的数量处于N> M的关系时，可以以高质量分离混合信号。首先，将在传感器中观察到的观测信号的值转换为频率区域的信号值。通过使用频率区域中的信号值，针对每个频率计算传感器之间的观测值的相对值。接下来，将每个相对值聚类成N个类，并且计算每个类的代表值。通过使用代表值，创建用于提取从V（1 = V = M）个信号源发送的信号的值的掩码。通过使用该掩模，从上述频率区域的信号值中提取从V信号源发送的信号的值。此后，如果V = 1，则将限制信号作为分离信号直接输出，如果V = 2，则将ICA等应用于限制信号，以获得分离信号。

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