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| Teager Energy Operation on Wavelet Packet Coefficients for Enhancing Noisy Speech Using a Hard Thresholding Function
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Full
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Source |
Signal Processing: An International Journal (SPIJ) |
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Table of Contents |
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Complete Issue PDF(5.42MB) |
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Volume: 6 Issue: 2 |
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Pages: NULL |
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Publication
Date: April 2012 |
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ISSN
(Online): 1985-2339 |
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Pages |
22 - 43 |
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Author(s) |
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Published
Date |
16-04-2012 |
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Publisher |
CSC
Journals, Kuala Lumpur,
Malaysia |
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ADDITIONAL
INFORMATION |
| Keywords Abstract References Cited by Related Articles Collaborative
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KEYWORDS: Teager Energy Operator, Statistical Modeling, Thrsholding Function, Wavelet Packet Transform |
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| 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 hard 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 to low levels of SNR. |
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| Tahsina Farah Sanam : Colleagues
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| Celia Shahnaz : Colleagues
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