Title :
Improved spectral subtraction for signal restoration
Author :
Nawab, H. ; Oppenheim, A.V. ; Lim, J.S.
Author_Institution :
Massachusetts Institute of Technology, Cambridge, Massachusetts
Abstract :
Major artifacts of the spectral subtraction signal restoration technique are the presence of harmonic patterns and blurring effects for images, and the presence of short tone bursts of varying frequency for speech signals. In this paper, we discuss several techniques developed to reduce these artifacts. Examples are shown to illustrate the performance of these techniques.
Keywords :
Equations; Frequency; Laboratories; Narrowband; Noise level; Noise reduction; Signal processing; Signal restoration; Smoothing methods; Speech;
Conference_Titel :
Acoustics, Speech, and Signal Processing, IEEE International Conference on ICASSP '81.
DOI :
10.1109/ICASSP.1981.1171138
