Patent ID: 9401746
Filing Date: 2016-07-26
CPC Classification: G10L,H04B

Claim Text:
1. A signal processing apparatus characterized by comprising: a transforming circuit that transforms a mixed signal, in which a first signal and a second signal coexist, into a phase component for each frequency and one of an amplitude component and a power component for each frequency; an amplitude analyzing circuit that derives a predetermined frequency at which said one of the amplitude component and the power component matches a predetermined condition; a change amount generating circuit that generates a change amount of the phase component at the predetermined frequency, the change amount to reduce a phase correlation between the first signal and the second signal at the predetermined frequency; a phase controlling circuit that controls the phase component at the predetermined frequency by using the change amount provided from said change amount generator; and an inverse transforming circuit that generates an enhanced signal by using the phase component having undergone control processing by said phase controller.