Normally speech signals are contaminated with noise and interference that reduces the intelligibility of speech during communication. In order to make speech signals effective and useful, they need to be enhanced from the noisy speech signal. In speech processing field many speech enhancement techniques are developed and are providing very good results. Multichannel microphone array is also one of the techniques used for speech enhancement, that provides better results than the single channel speech enhancement. Moreover, Wiener filtering is the most commonly used technique for multichannel...