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Wavelet speech enhancement based on time–scale adaptation

Mohammed Bahoura, Jean Rouat
2006 Speech Communication  
We propose a new speech enhancement method based on time and scale adaptation of wavelet thresholds.  ...  MELscale decomposition based on wavelet packets is also compared to the common wavelet packet scale.  ...  Acknowledgment We acknowledge Philippe Boigné for the experiments with HTK and TSA2, Roch Lefebvre from the speech compression group for the AB test software, Arkady Bron for his code of Ephraim and Malah  ... 
doi:10.1016/j.specom.2006.06.004 fatcat:nt32zlowhnepbh4cxrboplbzhy


Sheng Li, Ying Tian, Guohua Lu, Yang Zhang, Hui Jun Xue, Jian-Qi Wang, Xi-Jing Jing
2012 Electromagnetic Waves  
in this study, which incorporates the wavelet packet entropy based voice/unvoiced radar speech adaptive detection method and the human ear perception properties in a wavelet packet timescale adaptation  ...  In the proposed study, we have designed a new kind of speech acquisition radar system.  ...  Also, in order to enhance the detected radar speech, a speech enhancement algorithm is also proposed, which is on the basis of time-scale adaptation of wavelet packet coefficient thresholds by incorporating  ... 
doi:10.2528/pier12052207 fatcat:ee2siiio2bbbvidar4cc5glusy

A New Robust Hybrid Approach to Enhance Speech in Mobile Communication Systems

2011 American Journal of Applied Sciences  
To address this issue, a new method for enhancing speech from background interference is presented in this study by fusing dual band spectral subtraction with adaptive noise estimator and wavelet packet  ...  quality of speech is improved by Wavelet Packet Transform (WPT) based level dependent thresholding method.  ...  This is further refined using a modified soft thresholding approach based on a SURE risk rule. Finally, the inverse wavelet packet transform synthesizes the enhanced speech.  ... 
doi:10.3844/ajassp.2011.332.342 fatcat:xkk5aemluzberkjleffvstnynm

Wavelet speech enhancement based on the Teager energy operator

M. Bahoura, J. Rouat
2001 IEEE Signal Processing Letters  
We propose a new speech enhancement method based on the time adaption of wavelet thresholds. The time dependence is introduced by approximating the Teager Energy of the wavelets coefficients.  ...  This technique does not require an explicit estimation of the noise level or of the a priori knowledge of the SNR, which is usually needed in most of the popular enhancement methods.  ...  Wavelet shrinkage is a simple denoising technique based on the thresholding of the wavelet coefficients.  ... 
doi:10.1109/97.889636 fatcat:p7zoxakp4jen7nvko3dkjn3itm

Noise reduction algorithm with the soft thresholding based on the Shannon entropy and bone-conduction speech cross- correlation bands

Sung Dae Na, Qun Wei, Ki Woong Seong, Jin Ho Cho, Myoung Nam Kim, Carlos Gómez, Severin P. Schwarzacher, Huiyu Zhou
2018 Technology and Health Care  
the wavelet packet coefficients of the noisy speech.  ...  METHODS: A new algorithm for speech detection and noise reduction is proposed, which makes use of the Shannon entropy principle and cross-correlation with the bone-conduction speech signals to threshold  ...  Finally, a soft thresholding method is applied to the speech bands using the calculated threshold values for the speech enhancement and noise reduction, and the inverse wavelet packet decomposition is  ... 
doi:10.3233/thc-174615 pmid:29710756 pmcid:PMC6004965 fatcat:wht7guphsjhbjd2xf3l4xgoe6u

Speech signal enhancement through adaptive wavelet thresholding

Michael T. Johnson, Xiaolong Yuan, Yao Ren
2007 Speech Communication  
Enhancement is accomplished through the use of thresholding on the adapted BWT coefficients, and the results are compared to a variety of speech enhancement techniques, including Ephraim Malah filtering  ...  This paper demonstrates the application of the Bionic Wavelet Transform (BWT), an adaptive wavelet transform derived from a nonlinear auditory model of the cochlea, to the task of speech signal enhancement  ...  denoising techniques to construct a new adaptive wavelet thresholding method for speech enhancement, with the idea that the improved representational capability of the BWT on speech signals could lead  ... 
doi:10.1016/j.specom.2006.12.002 fatcat:6hxbisdvknhxdd5epugqt6lfcq

Adaptive Fuzzy Filter for Speech Enhancement [chapter]

Chih-Chia Yao, Ming-Hsun Tsai
2010 Lecture Notes in Computer Science  
In this paper an adaptive fuzzy filter, based on fuzzy system, is proposed for speech signal enhancement and automatic speech recognition accuracy.  ...  In the proposed system adaptive wavelet thresholds are generated and controlled by fuzzy rules concerning the presence of speech in noise.  ...  Architecture of Adaptive Fuzzy Filter This section proposes a new framework for speech enhancement called an Adaptive Fuzzy Filter.  ... 
doi:10.1007/978-3-642-12179-1_42 fatcat:s3sqmtr22fganc725eeuu35pvq


Thomas Weickert, Uwe Kiencke
2007 IFAC Proceedings Volumes  
The estimated coefficient energy distribution can be used as a threshold for wavelet thresholding techniques. The efficiency of the algorithm and its sensitivity to period variations is evaluated.  ...  The coefficient energy distribution of a period of noise is analyzed by a Period Wavelet Packet transform. This transform can analyze signals of arbitrary (nondyadic) length.  ...  Therefore, a new representation is required. This paper is structured as follows. A review of the signal adaptive wavelet packet transform and wavelet-based denoising is given in section 2.  ... 
doi:10.3182/20070829-3-ru-4911.00071 fatcat:366pj6qwcvbufn7nr7huli7bpy

An approach for noisy speech enhancement by employing the teager energy operation on wavelet packet

Tahsina Farah Sanam, Celia Shahnaz
2011 TENCON 2011 - 2011 IEEE Region 10 Conference  
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  ...  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.  ...  In this paper, we develop a new thresholding method in the wavelet packet domain, where the threshold has the capability to be adapted with speech/silence conditions.  ... 
doi:10.1109/tencon.2011.6129289 fatcat:au3ok4uld5e67praowfk5cdnuy

Speech enhancement using empirical mode decomposition and the Teager–Kaiser energy operator

Kais Khaldi, Abdel-Ouahab Boudraa, Ali Komaty
2014 Journal of the Acoustical Society of America  
Based on the EMD, the proposed speech denoising scheme is a fully data-driven approach.  ...  This is an author-deposited version published in: Handle ID In this paper a speech denoising strategy based on time adaptive thresholding of intrinsic modes functions (IMFs) of the  ...  ACKNOWLEDGMENT The authors would like to thank Professor Mohamed Bahoura from Universit e de Qu ebec a Rimouski for fruitful discussions on time adaptive thresholding.  ... 
doi:10.1121/1.4837835 pmid:24437785 fatcat:u36jdhs7xretfnucoszeuqvnlm

Speech Enhancement Using Hilbert Spectrum and Wavelet Packet Based Soft-Thresholding

Md. Ekramul Hamid
2015 Science Journal of Circuits Systems and Signal Processing  
A method of and a system for speech enhancement consists of Hilbert spectrum and wavelet packet analysis is studied.  ...  We implement ISA to separate speech and interfering signals from single mixture and wavelet packet based softthresholding algorithm to enhance the quality of target speech.  ...  Acknowledgement We would like to thank to National Institute of Information and Communications Technology (NICT) for providing support to carry out the study.  ... 
doi:10.11648/j.cssp.20150401.12 fatcat:wolamdkktfgtra643u7fyl4eea

An Adaptive Wavelet-Based Denoising Algorithm for Enhancing Speech in Non-stationary Noise Environment

Kun-Ching WANG
2010 IEICE transactions on information and systems  
We can improve the output of a wavelet-based speech enhancement algorithm in the presence of random noise bursts according to the results of VAD decision.  ...  The wavelet coefficient threshold (WCT) of each subband is then temporally adjusted according to the result of VAD approach.  ...  Acknowledgements This research was partially sponsored by the National Science Council, Taiwan, under contract number NSC 98-2221-E-158-004.  ... 
doi:10.1587/transinf.e93.d.341 fatcat:6ldodptxbzcrvhhgej6sr4qsqq

Spectral Entropy Employment In Speech Enhancement Based On Wavelet Packet

Talbi Mourad, Salhi Lotfi, Chérif Adnen
2007 Zenodo  
For noise reduction, instead of applying the classical thresholding technique, some wavelet packet nodes are set to zero and the others are thresholded.  ...  A comparison of our proposed technique to classical denoising methods based on thresholding and spectral subtraction is made in order to evaluate our approach.  ...  That's way Sungwook has proposed a noise estimation technique based on spectral entropy employing intensity histogram of wavelet packet coefficients for each node on adapted wavelet packet tree.  ... 
doi:10.5281/zenodo.1057300 fatcat:cnntoe4r6rgcvm7hmzcrzqdkky

Speech Enhancement based on 2D Gabor Filters for Arabic Phoneme Spoken by Malay Speakers

Ali Abd Almisreb, Nooritawati Md Tahir, Ahmad Farid Abidin, Norashidah Md Din
2018 International Journal of Engineering & Technology  
The effectiveness of the suggested approach is evaluated in compare with Wiener filter.  ...  In this paper, a speech enhancement method using 2D Gabor filter is proposed.  ...  As reported in [10] , in order to solve the drawback of basic wavelet thresholding, a system of speech enhancement based on adaptive thresholding of the wavelet packets was proposed without voiced/unvoiced  ... 
doi:10.14419/ijet.v7i4.11.20813 fatcat:3umqro2msjgevpocpazo7mev2q

A Generalized Time–Frequency Subtraction Method for Robust Speech Enhancement Based on Wavelet Filter Banks Modeling of Human Auditory System

Yu Shao, Chip-Hong Chang
2007 IEEE Transactions on Systems Man and Cybernetics Part B (Cybernetics)  
A generalized time-frequency subtraction method for robust speech enhancement based on wavelet filter banks modeling of human auditory system.  ...  Finally, a new system structure for speech enhancement is developed to integrate GPTFS and USE in wavelet domain.  ...  His research interests include speech enhancement, speech recognition, adaptive filters, and wavelets.  ... 
doi:10.1109/tsmcb.2007.895365 pmid:17702286 fatcat:fqwl4yuasfeovijbsen3wlusiq
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