Review on Speech Enhancement Techniques?

Speech is most effective and natural medium to exchange the information among people. The speech system also goes under the process of some software tools to present the information in effective way. This kind of effectiveness is defined as the translation of the information to text or some other speech form. In speech communication, the speech signal is always accompanied by some noise. Therefore, speech enhancement is required and it not only involves processing speech signals for human listening but also for further processing prior to listening. Main objective of speech enhancement is to improve the perceptual aspects of speech such as overall quality, intelligibility, or degree of listener fatigue. In this paper, we present review of various speech enhancement techniques.