Performance Evaluation of Adaptive Noise Cancellation Scheme Using ALE and NLMS Filters

Authors

  • Muhammad Safder Shafi
  • Sahar Imtiaz
  • Rafay Iqbal Ansari
  • Mansoor Khan
  • Jafar Ramadhan Mohammed

Keywords:

ALE, NLMS, Sinusoidal Noise, Wideband Noise

Abstract

The basic theme of our paper is to implement a new idea of noise reduction in the real time applications using the concepts of adaptive filters. Our model which is presented as one of the solutions is based on two stages of operation with the first stage based on the ALE (Adaptive Line Enhancer) filters and the second stage on NLMS (Normalized Least Mean Square) filter. The first stage reduces the sinusoidal noise from the input signal and the second stage reduces the wideband noise. Two input sources of voice are used; one for the normal speech and the other for the noise input, using separate microphones for both signals. The first signal is of the corrupted speech signal and the second signal is of only the noise containing both wideband and narrowband noise. In the first stage the narrowband noise is reduced by using the ALE technique. The second stage gets a signal with ideally only the wideband noise which is reduced using the NLMS technique. In both the stages the concerned algorithms are used to update the filter coefficients in such a way that the noise is cancelled out from the signal and a clean speech signal is heard at the output

Downloads

How to Cite

Shafi, M. S., Imtiaz, S., Iqbal Ansari, R., Khan, M., & Ramadhan Mohammed, J. (2015). Performance Evaluation of Adaptive Noise Cancellation Scheme Using ALE and NLMS Filters. Journal of Telecommunication, Electronic and Computer Engineering (JTEC), 4(1), 73–81. Retrieved from https://jtec.utem.edu.my/jtec/article/view/477

Issue

Vol. 4 No. 1

Section

Articles

License

TRANSFER OF COPYRIGHT AGREEMENT

The manuscript is herewith submitted for publication in the Journal of Telecommunication, Electronic and Computer Engineering (JTEC). It has not been published before, and it is not under consideration for publication in any other journals. It contains no material that is scandalous, obscene, libelous or otherwise contrary to law. When the manuscript is accepted for publication, I, as the author, hereby agree to transfer to JTEC, all rights including those pertaining to electronic forms and transmissions, under existing copyright laws, except for the following, which the author(s) specifically retain(s):

  1. All proprietary right other than copyright, such as patent rights
  2. The right to make further copies of all or part of the published article for my use in classroom teaching
  3. The right to reuse all or part of this manuscript in a compilation of my own works or in a textbook of which I am the author; and
  4. The right to make copies of the published work for internal distribution within the institution that employs me

I agree that copies made under these circumstances will continue to carry the copyright notice that appears in the original published work. I agree to inform my co-authors, if any, of the above terms. I certify that I have obtained written permission for the use of text, tables, and/or illustrations from any copyrighted source(s), and I agree to supply such written permission(s) to JTEC upon request.