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IJSTR >> Volume 1 - Issue 2, March 2012 Edition



International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616



An Approach for Noisy Speech Enhancement through soft thresholding function by Employing the Teager Energy Operation on Wavelet Packet

[Full Text]

 

AUTHOR(S)

Tahsina Farah,Celia Shahnaz

 

KEYWORDS

 

ABSTRACT

In this paper a new thresholding based speech enhancement approach is presented, where the threshold is statistically determined by employing the Teager energy operation on the Wavelet Packet (WP) coefficients of noisy speech. The threshold thus obtained is applied on the WP coefficients of the noisy speech by using a soft thresholding function in order to obtain an enhanced speech. Detailed simulations are carried out in the presence of white, car, pink, and babble noises to evaluate the performance of the proposed method. Standard objective measures, spectrogram representations and subjective listening tests show that the proposed method outperforms the existing state-of-the-art thresholding based speech enhancement approaches for noisy speech from high tolow levels of SNR.

 

REFERENCES