Title :
Speech enhancement using perceptually-constrained gain factors in critical-band-wavelet-packet transform
Author :
Lu, C.-T. ; Wang, H.-C.
Author_Institution :
Dept. of Electr. Eng., Nat. Tsing Hua Univ., Hsinchu, Taiwan
fDate :
3/18/2004 12:00:00 AM
Abstract :
A closed-form solution of gain factor for wavelet coefficients in a subband is derived by constraining the residual noise to be lower than the noise masking threshold. Experimental results show that this approach can efficiently remove the corrupting noise without any empirical factor.
Keywords :
Gaussian noise; speech enhancement; wavelet transforms; white noise; closed-form solution; critical-band-wavelet-packet transform; noise masking; perceptually-constrained gain factors; residual noise; speech enhancement; subband wavelet coefficients;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20040266
