Microphone array position estimation device, microphone array position estimation method, and program

摘要

PROBLEM TO BE SOLVED: To provide a microphone array position estimation device, a microphone array position estimation method, and a program capable of accurately estimating the position of a microphone array. A M a (M is an integer of 1 or more) positions of composed microphone array from number of microphones _{^{X (= (X 1 T,}} ..., X M T) T, T denotes the transpose), N ( N is an integer of 1 or more) The spectrum of the sound source signal output by the sound source is _recorded by S (a set for all n, f, t of _Snft , f is a frequency bin, t is a frame index), and is collected by a microphone array. When the spectrum of the signal is Z (a set of all f and t of Z _ft ), X that maximizes the simultaneous probability P (X, S, Z) of X, Y, and Z is estimated by iterative estimation of S and X. An estimation unit for estimating the position X of the microphone array is provided. [Selection diagram] Fig. 1