Patent ID: 8345884

Claim:
A signal separating and reproducing apparatus comprising: a separation filter analyzing unit calculating a first matrix which indicates frequency characteristics of a separation filter from input signals of a plurality of channels; a filter coefficient restricting unit calculating restriction coefficients for restricting the separation filter, calculating a second matrix by using the restriction coefficients and the first matrix, and calculating separation filter coefficients by using the second matrix; a separation filter unit calculating separation signals by filtering on the input signals of the plurality of channels by using the separation filter coefficients; a reproduction filter calculating unit calculating a third matrix by transforming the second matrix into an inverse matrix at each frequency, and calculating reproduction filter coefficients by using the third matrix; and a reproduction filter unit calculating synthesized signals corresponding to the respective channels by filtering on the separation signals by using the reproduction filter coefficients, wherein the filter coefficient restricting unit calculates the restriction coefficients so that the reproduction filter coefficients indicate filter coefficients which perform a sound source localization on the separation signals.