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 microphone array for speech
enhancement. The main focus of this thesis is to implement
multichannel microphone array using Wiener filtering in the
modulation domain system and also in the time domain system to
enhance the speech.
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