Speech enhancement by generalized wavelet shrinkage

2006 ◽  
Author(s):  
Zhidong Zhao
Keyword(s):  
Speech Enhancement ◽  
Wavelet Shrinkage

scholarly journals Speech Enhancement Algorithm Using Recursive Wavelet Shrinkage

2016 ◽  
Vol E99.D (7) ◽  
pp. 1945-1948 ◽  
Author(s):  
Gihyoun LEE ◽  
Sung Dae NA ◽  
KiWoong SEONG ◽  
Jin-Ho CHO ◽  
Myoung Nam KIM
Keyword(s):  
Speech Enhancement ◽  
Wavelet Shrinkage ◽  
Enhancement Algorithm

scholarly journals Speech enhancement using adaptive thresholding based on gamma distribution of Teager energy operated intrinsic mode functions

2019 ◽  
pp. 1355-1370
Author(s):  
ÖZKAN ARSLAN ◽  
ERKAN ZEKİ ENGİN
Keyword(s):  
Speech Enhancement ◽  
Adaptive Threshold ◽  
Intrinsic Mode Functions ◽  
Wavelet Shrinkage ◽  
Noisy Speech ◽  
Perceptual Evaluation ◽  
Shrinkage Methods ◽  
Speech Database ◽  
Leibler Divergence ◽  
Teager Energy

This paper introduces a new speech enhancement algorithm based on the adaptive threshold of intrinsic mode functions (IMFs) of noisy signal frames extracted by empirical mode decomposition. Adaptive threshold values are estimated by using the gamma statistical model of Teager energy operated IMFs of noisy speech and estimated noise based on symmetric Kullback–Leibler divergence. The enhanced speech signal is obtained by a semisoft thresholding function, which is utilized by threshold IMF coefficients of noisy speech. The method is tested on the NOIZEUS speech database and the proposed method is compared with wavelet-shrinkage and EMD-shrinkage methods in terms of segmental SNR improvement (SegSNR), weighted spectral slope (WSS), and perceptual evaluation of speech quality (PESQ). Experimental results show that the proposed method provides a higher SegSNR improvement in dB, lower WSS distance, and higher PESQ scores than wavelet-shrinkage and EMD-shrinkage methods. The proposed method shows better performance than traditional threshold-based speech enhancement approaches from high to low SNR levels.

Implementation Of Advanced Speech Enhancement System On Tms320c6713 Dsk System

2011 ◽  
Vol 1 (12) ◽  
pp. 74-76
Author(s):  
N B Umashankar N B Umashankar ◽  
◽  
Anand Jatti Anand Jatti ◽  
Dr. S.C. Prasanakumar Dr. S.C. Prasanakumar
Keyword(s):  
Speech Enhancement
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