Signal compression and enhancement using a new orthogonal-polynomial-based discrete transform

Discrete orthogonal functions are important tools in digital signal processing. These functions received considerable attention in the last few decades. This study proposes a new set of orthogonal functions called discrete Krawtchouk–Tchebichef transform (DKTT). Two traditional orthogonal polynomial...

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Published inIET signal processing Vol. 12; no. 1; pp. 129 - 142
Main Authors Mahmmod, Basheera M, Ramli, Abd Rahman bin, Abdulhussain, Sadiq H, Al-Haddad, Syed Abdul Rahman, Jassim, Wissam A
Format Journal Article
LanguageEnglish
Published The Institution of Engineering and Technology 01.02.2018
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ISSN1751-9675
1751-9683
1751-9683
DOI10.1049/iet-spr.2016.0449

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Abstract Discrete orthogonal functions are important tools in digital signal processing. These functions received considerable attention in the last few decades. This study proposes a new set of orthogonal functions called discrete Krawtchouk–Tchebichef transform (DKTT). Two traditional orthogonal polynomials, namely, Krawtchouk and Tchebichef, are combined to form DKTT. The theoretical and mathematical frameworks of the proposed transform are provided. DKTT was tested using speech and image signals from a well-known database under clean and noisy environments. DKTT was applied in a speech enhancement algorithm to evaluate the efficient removal of noise from speech signal. The performance of DKTT was compared with that of standard transforms. Different types of distance (similarity index) and objective measures in terms of image quality, speech quality, and speech intelligibility assessments were used for comparison. Experimental tests show that DKTT exhibited remarkable achievements and excellent results in signal compression and speech enhancement. Therefore, DKTT can be considered as a new set of orthogonal functions for futuristic applications of signal processing.
AbstractList Discrete orthogonal functions are important tools in digital signal processing. These functions received considerable attention in the last few decades. This study proposes a new set of orthogonal functions called discrete Krawtchouk–Tchebichef transform (DKTT). Two traditional orthogonal polynomials, namely, Krawtchouk and Tchebichef, are combined to form DKTT. The theoretical and mathematical frameworks of the proposed transform are provided. DKTT was tested using speech and image signals from a well-known database under clean and noisy environments. DKTT was applied in a speech enhancement algorithm to evaluate the efficient removal of noise from speech signal. The performance of DKTT was compared with that of standard transforms. Different types of distance (similarity index) and objective measures in terms of image quality, speech quality, and speech intelligibility assessments were used for comparison. Experimental tests show that DKTT exhibited remarkable achievements and excellent results in signal compression and speech enhancement. Therefore, DKTT can be considered as a new set of orthogonal functions for futuristic applications of signal processing.
Author Al-Haddad, Syed Abdul Rahman
Ramli, Abd Rahman bin
Abdulhussain, Sadiq H
Jassim, Wissam A
Mahmmod, Basheera M
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Issue 1
Keywords speech enhancement algorithm
signal compression
DKTT
transforms
orthogonal-polynomial-based discrete transform
discrete Krawtchouk–Tchebichef transform
speech enhancement
signal enhancement
digital signal processing
Language English
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Snippet Discrete orthogonal functions are important tools in digital signal processing. These functions received considerable attention in the last few decades. This...
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wiley
iet
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StartPage 129
SubjectTerms digital signal processing
discrete Krawtchouk–Tchebichef transform
DKTT
orthogonal‐polynomial‐based discrete transform
Research Article
signal compression
signal enhancement
speech enhancement
speech enhancement algorithm
transforms
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Title Signal compression and enhancement using a new orthogonal-polynomial-based discrete transform
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