FDM array based dual channel speech enhancement method

摘要

With more and more miniature speech communication devices coming out,two-element microphone array draws a lot of attention due to its simplicity and the ability to suppress directional noise.This paper develops a dual channel speech enhancement method by combining the first-order differential microphone (FDM) array and the single-channel spectral enhancement techniques.The method can obtain an estimate of speech signal and noise signal simultaneously,and it corrects the noise spectrum in a real-time manner.Compared with the existing dual channel speech enhancement techniques,the proposed method can achieve 2～6 dB output signal-to-noise ratio (SNR) gain with only 1/3 computational complexity.