Possession sound interval sortable device, possession sound interval sortable manner, and possession sound interval sorting program

摘要

Volume from the sound generator fluctuates when and, when sound generator number is unknown, the microphone of the type which differs existing together, use it is, kind of when even, it sorts possession sound interval of the observation signal to every that sound generator appropriately. The sound generator direction presumption means 105 which it presumes the main component of the difference vector which was requested when the fact that possession sound interval sortable device 100, the difference calculation means 104 which calculate the difference vector of particular time and time immediately before that from the power spectrum time series of the aural signal which collection sound is done, concerning each time of the multidimensional vector list which was delimited in the vector calculation means 101 which calculate the multidimensional vector list which is vector list of the power spectrum which has the dimension of the number of microphones and optional time length with the multiple microphones, and, allows non crossing, at the same time exceeds three-dimensional dimension is allowed, as sound generator direction and,Possession sound interval of the aural signal which is input each every time it seems it has with the possession sound interval decision means 106 which distinguish whether in every sound generator direction which was calculated with sound generator direction presumption means making use of the specified possession sound Characteristic collimating mark which is shown, particular sound generator direction is possession sound interval, or is silent interval.