A noise control device reduces noises respectively arriving in a plurality of spaces which are acoustically independent from each other. The noise control device includes sound output devices, which are respectively provided in the plurality of spaces so as to respectively correspond to the plurality of spaces, each for outputting a sound to a corresponding space. The noise control device also includes a noise detection device, which is provided in at least one of the plurality of spaces, for detecting a noise arriving in the at least one of the plurality of spaces. Further, the noise control device includes a signal generation device which is a single device for generating, based on the noise detected by one noise detection device, a cancellation signal for canceling the noise, and outputting the generated cancellation signal to each of the plurality of sound output device.
