A Survey on Speech Enhancement Methodologies
Ravi Kumar, P. Venkata Subbaiah · International Journal of Intelligent Systems and Applications · 2016
Speech enhancement is a technique wh ich processes the noisy speech signal.The aim of speech enhancement is to improve the perceived quality of speech and/or to improve its intelligib ility.Due to its vast applications in mobile telephony, VOIP, hearing aids, Skype and speaker recognition, the challenges in speech enhancement have grown over the years.It is more challenging to suppress back ground noise that effects human co mmunicat ion in noisy environ ments like airports, road works, traffic, and cars.The object ive of this survey paper is to outline the single channel speech enhancement methodologies used for enhancing the speech signal wh ich is corrupted with addit ive background noise and also discuss the challenges and opportunities of single channel speech enhancement.This paper main ly focuses on transform do main techniques and supervised (NMF, HMM) speech enhancement techniques.This paper gives frame work for developments in speech enhancement methodologies.