Title :
A time-varying smoothing factor for the decision-directed approach in speech enhancement
Author_Institution :
Dept. of Electron., Univ. of Blida, Blida, Algeria
Abstract :
Frequency domain speech enhancement method is often defined in terms of the a priori SNR (Signal to Noise Ratio). A widely used method to determine the a priori SNR from noisy speech is the decision-directed approach. This paper presents a time-varying smoothing factor in the calculation of the decision-directed approach to improve the speech enhancement. Objective and subjective evaluation confirm superiority in noise suppression and quality of the enhanced speech.
Keywords :
frequency-domain analysis; interference suppression; smoothing methods; speech enhancement; decision directed approach; frequency domain; noise suppression; noisy speech; signal to noise ratio; speech enhancement; time-varying smoothing factor; Noise reduction; Signal to noise ratio; Speech; Speech enhancement; Time frequency analysis;
Conference_Titel :
Symbolic and Numerical Methods, Modeling and Applications to Circuit Design (SM2ACD), 2010 XIth International Workshop on
Conference_Location :
Gammath
Print_ISBN :
978-1-4244-6816-4
DOI :
10.1109/SM2ACD.2010.5672304
