Spelling suggestions: "subject:"wavelets (mathematics)"" "subject:"wavelets (amathematics)""
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Fabric defect detection by wavelet transform and neural networkLee, Tin-chi., 李天賜. January 2004 (has links)
published_or_final_version / abstract / toc / Electrical and Electronic Engineering / Master / Master of Philosophy
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Patterned Jacquard fabric defect detectionNgan, Yuk-tung, Henry., 顏旭東. January 2004 (has links)
published_or_final_version / abstract / toc / Electrical and Electronic Engineering / Master / Master of Philosophy
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Design of 1-D and 2-D perfect reconstruction filter banks陳志榮, Chan, Chi-wing. January 1996 (has links)
published_or_final_version / Electrical and Electronic Engineering / Master / Master of Philosophy
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New design and realization techniques for perfect reconstruction two-channel filterbanks and wavelets basesPun, Ka-shun, Carson., 潘加信. January 2002 (has links)
published_or_final_version / Electrical and Electronic Engineering / Master / Master of Philosophy
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Study of wavelet and the filter bank theory with application to image codingNi, Jiangqun., 倪江群. January 1998 (has links)
published_or_final_version / Electrical and Electronic Engineering / Doctoral / Doctor of Philosophy
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Using wavelets and principle components analysis to model data from simulated sheet forming processesTabb, Jeremiah R. 05 1900 (has links)
No description available.
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Wavelet-based transient analysisLee, Chien-Hsing 08 1900 (has links)
No description available.
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Finite-field wavelet transforms and their application to error-control codingFekri, Faramarz 08 1900 (has links)
No description available.
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Audio compression and speech enhancement using temporal masking modelsGunawan, Teddy Surya, Electrical Engineering & Telecommunications, Faculty of Engineering, UNSW January 2007 (has links)
Of the few existing models of temporal masking applicable to problems such as compression and enhancement, none are based on empirical data from the psychoacoustic literature, presumably because the multidimensional nature of the data makes the derivation of tractable functional models difficult. This thesis presents two new functional models of the temporal masking effect of the human auditory system, and their exploitation in audio compression and speech enhancement applications. Traditional audio compression algorithms do not completely utilise the temporal masking properties of the human auditory system, relying solely on simultaneous masking models. A perceptual wavelet packet-based audio coder has been devised that incorporates the first developed temporal masking model and combined with simultaneous masking models in a novel manner. An evaluation of the coder using both objective (PEAQ, ITU-R BS.1387) and extensive subjective tests (ITU-R BS.1116) revealed a bitrate reduction of more than 17% compared with existing simultaneous masking-based audio coders, while preserving transparent quality. In addition, the oversampled wavelet packet transform (ODWT) has been newly applied to obtain alias-free coefficients for more accurate masking threshold calculation. Finally, a low-complexity scalable audio coding algorithm using the ODWT-based thresholds and temporal masking has been investigated. Currently, there is a strong need for innovative speech enhancement algorithms exploiting the auditory masking effects of human auditory system that perform well at very low signal-to-noise ratio. Existing competitive noise suppression algorithms and those that incorporate simultaneous masking were examined and evaluated for their suitability as baseline algorithms. Objective measures using PESQ (ITU-T P.862) and subjective measures (ITU-T P.835) demonstrate that the proposed enhancement scheme, based on a second new masking model, outperformed the seven baseline speech enhancement methods by at least 6- 20% depending on the SNR. Hence, the proposed speech enhancement scheme exploiting temporal masking effects has good potential across many types and intensities of environmental noise. Keywords: human auditory system; temporal masking; simultaneous masking; audio compression; speech enhancement; subjective test; objective test.
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Parameterization of slant and slantlet/wavelet transforms with applications /Tourshan, Khaled. January 2003 (has links)
Thesis (Ph.D.)--Tufts University, 2003. / Adviser: Joseph P. Noonan. Submitted to the Dept. of Electrical Engineering. Includes bibliographical references (leaves 149-149). Access restricted to members of the Tufts University community. Also available via the World Wide Web;
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