NOISE CANCELING SYSTEM, NOISE CANCELING SIGNAL FORMING METHOD, AND NOISE CANCELING SIGNAL FORMING PROGRAM

摘要

PROBLEM TO BE SOLVED: To automatically obtain the most suitable noise canceling performance in accordance with generated noise without troubling a user.;SOLUTION: In addition to an FF filter circuit 51, an adaptive filter circuit 52 of which the transfer function is adaptively changed, a filter control part 53 for controlling the adaptive filter circuit 52, a switch circuit 54, a power calculation part 55, and a synthesizing part 56 are provided. A noise canceling signal formed by the FF filter circuit 51 and a noise canceling signal formed by the adaptive filter circuit 52 controlled by the filter control part 53 are synthesized by the synthesizing part 56, and the synthesis result is used as a noise canceling signal.;COPYRIGHT: (C)2010,JPO&INPIT