| 摘要 |
PROBLEM TO BE SOLVED: To provide a noise cancelling system that enables a user to listen to a music and the like at all times in an excellent listening environment.SOLUTION: A noise cancelling system is provided that comprises: a noise analysis unit that analyzes a frequency component of a noise signal; a plurality of filter process units that execute a prescribed filter process to the noise signal on the basis of the analysis result; and an output control unit that temporally varies a composition ratio of an output of the plurality of filter process units in accordance with a change in the analysis result of the noise analysis unit. When the change in the analysis result of the noise analysis unit occurs, one filter process unit starts the prescribed filter process on the basis of a characteristic different from a characteristic used in other filter process units executing the prescribed filter process to the noise signal, the output control unit temporally varies a composition ratio of outputs of the other filter process units and the one filter process unit in accordance with the change in the analysis result of the noise analysis unit, and switches the output from the other filter process units to one filter process unit. |
