| 摘要 |
A noise removing device and a method therefor are provided to separate a frequency response of a target signal and a frequency response of a noise signal by using position information of the target signal and remove a noise. A plurality of microphones(100a,100b) receives sound signals in which a voice and a noise are included. A target signal information input unit(200) receives a position of a target signal, which is a voice signal, as preceding information. An equalizer information input unit(300) outputs equalizer information for correcting mismatching among a plurality of the microphones(100a,100b). A noise removing unit(400) analyzes frequencies of the sound signals, and estimates whether respective frequency responses of the sound signals are a frequency response of a noise signal or a frequency response of the target signal on the basis of the preceding information. A control unit(500) controls the operation of a plurality of the microphones(100a,100b), the target signal information input unit(200), the equalizer information input unit(300), and the noise removing unit(400). The control unit(500) analyzes the frequencies of the sound signals received through a plurality of the microphones(100a,100b), estimates whether the respective frequency responses are the frequency response of the noise signal or the frequency response of the target signal on the basis of the preceding information, and removes a noise by using the estimated result.
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