The signal arrival direction presumption device, being signal arrival direction presumption manner, and the signal arrival direction presumption device which

摘要

Even with when correlation queue and noise correlation queue between the input signal are unique, the signal arrival direction presumption device which can presume signal arrival direction. In this device, each one of the status where first, with observation means (1), only noise exists and a state where sound of the arrival direction presumption target is input is observed, after with brief fourier transform means (2), brief fourier transform doing, with correlation queue calculation means (3), noise correlation queue and input signal correlation queue are calculated. The correlation queue which is obtained noise correlation queue containment means (4) and containment respectively in input signal correlation queue containment means (5). Next, with true eigen value true characteristic vector false characteristic vector calculation means (6), true eigen value and true characteristic vector and false characteristic vector of the noise correlation queue for input signal correlation queue making use of these correlation queues, are calculated, assistant three-dimensional component queue calculation means (7) with, after calculating the queue which seeks the assistant three-dimensional component of the signal part space on the basis of with true eigen value and true characteristic vector and the false characteristic vector which are obtained, arrival direction search means (8) with, arrival direction of sound is searched making use of the queue which seeks the assistant three-dimensional component of that signal part space,