Disclosed herein is a noise canceling apparatus including: a microphone configured to pick up ambient sound as noise； a first signal generator configured to receive a signal from the microphone to generate a noise cancel signal that is inverted in phase to the signal received from the microphone and has an amplitude level considered with an attenuation in accordance with a distance from the microphone to an observation point separated away from the microphone； a first loudspeaker configured to be arranged in the proximity of the microphone and output the noise cancel signal； a second signal generator configured to receive the signal from the microphone to generate a positive-phase signal that has the same phase as that of the signal from the microphone； and a second loudspeaker configured to be arranged in the proximity of the microphone and output the positive-phase signal.
