| 摘要 |
PURPOSE:To surely and easily perform the identification of the existence of a target sound in mixed sounds. CONSTITUTION:A mixed sound signal v0 in which an objective sound signal a0 and a nonobjective sound signal from a receiver 18 is input to a first module 11 having adaptive filters 13, 15 and a second module 12 receiving the output therefrom. Furthermore a reference signal u0 from a reference signal input part 17 is input to the first module 11, an input signal is adapted and identified in each module for the purpose of estimation and elimination and the objective signal a0 correlated with the reference signal u0 is obtained as the output signal of the second module 12. As the result, the existence of the objective sound signal a0 correlated with the reference signal u0 can be confirmed clearly and in addition the extraction of the objective sound signal a0 can be surely and easily performed. |
