| 摘要 |
<p>In order to obtain a high quality enhanced signal, the present invention comprises: a conversion means that converts a mixed signal, in which a first signal and a second signal are mixed, to a phase component of each frequency, and a power component or an amplitude component of each frequency; a variation amount generation means that uses a data sequence which has weaker cross-correlation than the phase component, and which has a lower degree of randomness than random numbers, to generate a variation amount of the phase component of a prescribed frequency; a phase control means that uses the variation amount provided from the variation amount generation means, to control the phase component; and an inverse transformation means that uses the phase component to which control processing has been applied by the phase control means, to generate an enhanced signal.</p> |
