Noise control device and voice receiving system provided with same

The invention discloses a noise control device and a voice receiving system provided with the same. The noise control device comprises a filtering circuit, a rectifying circuit and a switch control circuit. The filtering circuit receives a voice signal and obtains a noise signal part in the voice signal. The rectifying circuit is used for converting the noise signal part into a direct-current level signal and transmitting the direct-current level signal to the switch control circuit. The switch control circuit is used for controlling the output of the voice signal according to the intensity of the direct-current level signal containing the noise signal part.