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

Content Provider	IET Digital Library
Author	Mahmmod, Basheera M. Ramli, Abd Rahman bin Abdulhussain, Sadiq H. Haddad, Syed Abdul Rahman Al Jassim, Wissam A.
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.
Starting Page	129
Ending Page	142
Page Count	14
ISSN	17519675
Volume Number	12
e-ISSN	17519683
Issue Number	Issue 1, Feb (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-spr/12/1
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-spr.2016.0449
Journal	IET Signal Processing
Publisher Date	2017-08-30
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Digital Signal Processing Discrete Krawtchouk–Tchebichef Transform DKTT Integral Transforms Orthogonal-polynomial-based Discrete Transform Signal Compression Signal Enhancement Speech And Audio Signal Processing Speech Enhancement Speech Enhancement Algorithm Speech Processing Technique Transform
Content Type	Text
Resource Type	Article
Subject	Signal Processing Electrical and Electronic Engineering

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