NDLI: Unified Structure to Combat Residuum Echo in Advance Communication Systems

Content Provider	IEEE Xplore Digital Library
Author	Govil, Jivesh Nandra, Avadh
Copyright Year	2006
Description	Author affiliation: Student Member, IEEE, Department of Electronics and Communication, Bhai Gurudas Institute of Engineering and Technology, Punjab Technical University, Sangrur, Punjab, India 148001 (Nandra, Avadh) \|\| Student Member, IEEE, Digital Signal Processing Laboratory, Department of Electronics and Communications, Netaji Subhas Institute of Technology, University of Delhi, Dwarka, New Delhi, India 110075 (Govil, Jivesh)
Abstract	With the advent of packetized audio transmission, echo cancellation has put forth many challenging requirements. Using an adaptive filter echo cancellation algorithm only in the active region in which echo exists, its performance can be greatly increased, and its complexity can be reduced. The proposed scheme estimates the constant delay and locates the active regions and is integrated with the Fast LMS/Newton algorithm for efficient realization of long adaptive filters. We assume that the input sequence to the adaptive filter can be modeled as an autoregressive (AR) process whose order may be kept much lower than the adaptive filter length. In addition, the proposed echo cancellation is further integrated with residual echo cancellation scheme based on the autoregressive (AR) analysis. Residual echo is whitened by the inverse filter using the estimated AR coefficients. Removing speech characteristics of the residual echo signal, the noise reduction system successfully reduces the power of residual echo as well as that of ambient noise, resulting in powerful echo cancellation for commercial mobile communication with suitability for efficient VLSI implementation.
Starting Page	521
Ending Page	525
File Size	2383663
Page Count	5
File Format	PDF
ISBN	1424401720
ISSN	15483746
DOI	10.1109/MWSCAS.2006.381782
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-08-06
Publisher Place	Puerto Rico
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Echo cancellers Adaptive filters Delay estimation Least squares approximation Signal synthesis Signal processing algorithms Filtering algorithms Algorithm design and analysis Noise reduction Convolution
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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