| 摘要 |
<p>PURPOSE: To realize the reception of a substantially intact target signal, using small number of sensors, even if the error of actual incoming direction of the target signal from a predicted direction is large. CONSTITUTION: In each space interruption filter circuit constituting space interruption filter circuit group 12, a subtraction circuit 6m subtracts the output signal of a leak adaptive filter 5m(m=0, 1,..., M-1) employing an output signal of a space pass filter 3 as a reference signal from the signal of each sensor delayed through a delay circuit 4m. The subtraction result is outputted from the space interruption filter circuit and employed as an error signal for updating the coefficients of the leak adaptive filter 5m. Consequently, the target signal is removed sufficiently from the output of the space interruption filter circuit and deterioration of the target signal is suppressed in the output 11 of a multiinput canceler circuit 11.</p> |
