| 摘要 |
The present invention relates to implementation of a phone device for a ship and a plant attached with a noise cancellation module, which enables phone calls to be made without any problems by cancelling every sort of noise in the ship and the plant by using technology of active noise control (ANC). The noise cancellation module of the present invention comprises: a plurality of microphones; a noise recognition unit detecting noise inside the plant and the ship through the microphones; a noise processing unit analyzing when the noise detected by the noise recognition unit is not less than a reference value, and processing reverse-phase noise with regard to the analyzed noise; and a plurality of speakers outputting the reverse-phase noise generated through the noise processing unit to an analog signal. |
