Method for noise cancelling by using 2 microphones for improve speech recognition of wireless telematics services

A method for removing a noise using two microphones in order to improve a speech recognition ratio of a wireless telematics service is provided to improve the speech recognition ratio using two microphones by inputting a speech with the noise to one microphone and the noise only to the other microphone in a hands-free kit. A method for removing a noise using two microphones in order to improve a speech recognition ratio of a wireless telematics service comprises steps of (a) through (e). In step (a), a speech signal and a noise signal are input to a first microphone(302) and a second microphone(308). In step (b), a signal input to the first microphone is summed with a signal input to the second microphone. In step (c), the signal input to the second microphone is subtracted from the signal input to the first microphone. In step (d), a result signal of step (c) is subtracted a result signal of step (b). In step (e), the result signal of step (d) is used as an input speech to a mobile phone.