Title :
DCT speech enhancement with hard and soft thresholding criteria
Author :
Hasan, M.K. ; Zilany, M.S.A. ; Khan, M.R.
Author_Institution :
Dept. of Electr. & Electron. Eng., Bangladesh Univ. of Eng. & Technol., Dhaka, Bangladesh
fDate :
6/20/2002 12:00:00 AM
Abstract :
A speech enhancement method in the DCT domain using novel hard and soft thresholding criteria is proposed. Unlike other reported research results, the level of the trace of the signal present in the high frequency region of the DCT coefficients is estimated to obtain the critical threshold parameter, the bias compensated noise level. The results show that the proposed method is more effective for a wide range of SNRs
Keywords :
discrete cosine transforms; speech enhancement; DCT domain; SNR; bias compensated noise level; critical threshold parameter; hard thresholding criteria; soft thresholding criteria; speech enhancement;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20020466
