Audio Enhancement using Remez Exchange Algorithm with DWT

International Journal of Electronics and Communication Engineering
© 2015 by SSRG - IJECE Journal
Volume 2 Issue 2
Year of Publication : 2015
Authors : Hari Narayan Mishra and Agya mishra
How to Cite?

Hari Narayan Mishra and Agya mishra, "Audio Enhancement using Remez Exchange Algorithm with DWT," SSRG International Journal of Electronics and Communication Engineering, vol. 2,  no. 2, pp. 41-46, 2015. Crossref,


Audio enhancement became important when noise in signals causes loss of actual information. Many filters have been developed and still improving. A highly optimized core discrete Remez part of the Parks-McClellan (PM) filter along with wavelet type discrete symlet filter been proposed in the paper. The proposed algorithm DWT-REA is experimented for two speech signals and efficiency is checked with calculation of MSE. Performance is also evaluated for different value of noise level. Proposed Algorithm is also compared with simple REA for seeing the improvement in recovered signal. Proposed algorithm can easily applicable in the field of speech enhancement.


Remez Exchange Algorithm, Finite Impulse Response (FIR), Parks-McClellan (PM), DWT, Symlet Wavelet, Audio enhancement.


[1] Andrea Primavera,  Advanced Algorithms for Audio Quality Improvement in Musical Keyboards Instruments, Doctoral School on Engineering Sciences, Università Politecnica delle Marche, pp 1-9, 11-feb-2013.
[2] Minje kim, Paris smaragdis, collaborative audio enhancement using probabilistic latent component sharing,  in neural information processing systems (nips) 2014, workshop on crowdsourcing and machine learning. montreal, canada.
[3] Robert c. Maher, audio enhancement using nonlinear time-frequency filtering, AES 26th International Conference, Denver, Colorado, USA,pp 1-9, 2005 July 7–9
[4] Muhammad Ahsan and Tapio Saram¨aki, A MATLAB Based Optimum Multiband FIR Filters Design Program Following the Original Idea of the Remez Multiple Exchange Algorithm, Academy of Finland, project No. 213462 (Finnish Centre of Excellence program (2006 - 2011), 2011 IEEE
[5] Xi Zhang, Senior Member, IEEE, Akira Kato, Toshinori Yoshikawa, A New Class of Orthonormal Symmetric Wavelet Bases Using a Complex Allpass Filter, IEEE transactions on signal processing, vol. 49, no. 11, november 2001
[6] Xi Zhang, A New Phase-Factor Design Method for Hilbert-Pairs of Orthonormal Wavelets, IEEE signal processing letters, vol. 18, no. 9, september 2011
[7] James H. McClellan, Thomas W. Parks, A Personal History of the Parks–McClellan Algorithm, ieee signal processing magazine march 2005
[8] Xi Zhang, Design of FIR Halfband Filters for Orthonormal Wavelets Using Remez Exchange Algorithm, IEEE signal processing letters, vol. 16, no. 9, september 2009