| 摘要 |
PROBLEM TO BE SOLVED: To simply estimate a localization position of a stereo signal.SOLUTION: A signal acquisition section 34 acquires a sum signal M[k] which is obtained by adding acoustic signals L[k] and R[k] constituting a stereo signal S0(t), and a difference signal S[k] which is obtained by subtracting the acoustic signal R[k] from the acoustic signal L[k]. A ratio computing section 42 computes the amplitude ratio p[k] of the difference signal S[k] to the sum signal M[k] in each band B[k]. A localization estimation section 44 identifies an estimated localization position Y[k] of the stereo signal S0(t) in each band B[k] depending on the amplitude ratio p[k] computed by the ratio computing section 42. |
