A Wavelet Approach for a One-Dimensional Signal

Author(s)	Prof. Dr. Daljeet Kaur Khanduja, Prof. Surjeet Kaur Kaur
Country	India
Abstract	This paper explains a comparative study conducted based on discrete wavelet transform (DWT), discrete wavelet packet transforms (DWPT) and the complex wavelet transforms (CWT) techniques. A mother or basis wavelet is first chosen for five wavelet filter families such as haar, Daubechies (db4), coiflet, symlet and dmey for DWT and WP approach. The signal is then decomposed to a set of scaled and translated versions of the mother wavelet also known as time and frequency parameters. The results show that wavelet filter with multiresolution analysis(MRA) are useful for analysis and synthesis purpose. For Complex Wavelet Transform (CWT) approach we use Haar, Splines, Symlets, Shannon basis function for analysis and synthesis purpose and we verified that SNR values are comparable with CWT also. In terms of signal quality the Haar wavelet has been seen to be the best mother wavelet. This is taken from the analysis of the signal to noise ratio (SNR) value which is around 23dB for normal DWT, around 290 to 310dB for WP and CWT which proves that 1D signal has significant improvement with wavelet transform analysis and synthesis.
Keywords	Discrete wavelet transform (DWT), wavelet packet decomposition (WPD), complex wavelet transform (CWT)
Field	Engineering
Published In	Volume 8, Issue 4, July-August 2026
Published On	2026-07-29
DOI	https://doi.org/10.36948/ijfmr.2026.v08i04.84549

About IJFMR Fees & Payment Current Issue Publication Archive	Submit Research Paper Track Submission Status Publication Guidelines Publication Ethics Peer Review & Plagiarism	Join as a Reviewer Editors & Reviewers Reviewer Referral Program Get Reviewer Membership Certi.	Website/Journal Policies Usage Policy Content Policies Privacy Policy

Contact Us		+91-9687-828-838	editor@ijfmr.com

International Journal For Multidisciplinary Research