Current Method Of Speech Enhancement - 889 Words

Current Method of speech enhancement has been developed with adaptive filtering approach. The removal of unwanted signal i.e. noise from speech signals have applications ranging from cellular communications to front ends for speech recognition system. Adaptive Filtering techniques are used in many applications such as cancellation of echo, adaptive equalization, adaptive noise removal , and beam forming applications .This survey paper is an optimal survey of adaptive filtering using Least mean squares algorithm(LMS), Normalized LMS algorithm, and Recursive least squares(RLS) algorithm has been evaluated for noisy speech. Keywords — Adaptive filtering, LMS, NLMS, RLS, Speech Enhancement. I. INTRODUCTION In real time situations speech signals are corrupted by several different forms of noise such as speaker sound, background noise like door slam fan running in background, car noise, TV noise and also they are concern to distortion caused by communication channels; examples are low-quality microphone, room reverberation, etc. In all such situations extraction of high resolution signals is an important task. Filtering techniques are mainly classified as adaptive and non adaptive filtering techniques. In real time environment the analytical nature of all speech signals are non-stationary; as a result non-adaptive filtering may not be suitable for such practical situations. Speech enhancement improves quality of signal by suppression of noise and reduction of distortion. TheShow MoreRelatedAn Evaluation Of Lms Based Adaptive Filtering1542 Words   |  7 PagesABSTRACT Current Method of speech enhancement has been developed with adaptive filtering approach. The removal of unwanted signal i.e. noise from speech signals have applications ranging from cellular communications to front ends for speech recognition system. This paper describes proficient algorithm for removal of noise from speech. An optimal evaluation of LMS based adaptive filtering has been implemented for the observed noisy speech. This Algorithm is basic adaptive algorithm. This AdaptiveRead MoreHuman Enhancement Qualify As Therapy1568 Words   |  7 Pagesmedications, meditation, and exercise are non-technological approaches that are not morally debated. Although inevitably unresolved, the first thing that needs to be addressed is what types of human enhancement qualify as therapy. When people agree that certain technologies are or are not enhancements, where we draw the line on humanity becomes relevant. 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