| 摘要 |
PROBLEM TO BE SOLVED: To output a separation signal corresponding to a specific sound source through a specific output edge (to trace a sound source) even when a position of a sound source to a microphone moves when performing a sound source separation process by BSS method based on an ICA method. SOLUTION: A frequency analyzing unit 24 performs a frequency analysis calculation, for each of a first output channel Op1i, to a separation signal y1i for each predetermined time duration that is outputted through this, calculates a feature amount of a frequency of each separation signal y1i by this, and judges a switching status of the separation signal y1i by an automatic evaluation of transition of the feature amount. An output buffer 22 can select any one of a second output channel Op2i by a switching in order to output any one of separation signal y1i outputted through the first output channel Op1i based on a judgment result of switching status of a separation signal y1i. COPYRIGHT: (C)2007,JPO&INPIT |
