| 摘要 |
The present invention discloses a method and device for self-adaptively eliminating noises. Said method comprises: filtering the signal received by a first microphone using a first filter, filtering the signal received by a second microphone using a second filter, and obtaining a signal with noises reduced by subtracting the filtered signals; wherein, in a noise segment, the coefficients of the first filter the second filter are updated respectively using the signal with noises reduced such that the noise component contained in the signal filtered by the first filter tends to be the same with the noise component contained in the signal filtered by the second filter; and in a noisy voice segment, the coefficients of the first filter and the second filter are remained unchanged respectively, the first filter and the second filter respectively use a coefficient updated in the noise segment last time to filter the signals received by the first microphone and the second microphone. The present invention can address the problem that noise eliminating effect is poor in the prior art caused by the fact that FIR filter cannot approach the optimal solution for eliminating noises. |
