Acoustic Echo Cancellation Embedded in Smart Transcoding Algorithm between 3GPP AMR-NB Modes
Joint Authors
Pastor, Dominique
Taddei, Hervé
Thepie Fapi, Emmanuel Rossignol
Beaugeant, Christophe
Source
Journal of Electrical and Computer Engineering
Issue
Vol. 2010, Issue 2010 (31 Dec. 2010), pp.1-5, 5 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2010-09-16
Country of Publication
Egypt
No. of Pages
5
Main Subjects
Engineering Sciences and Information Technology
Information Technology and Computer Science
Abstract EN
Acoustic Echo Cancellation (AEC) is a necessary feature for mobile devices when the acoustic coupling between the microphone and the loudspeaker affects the communication quality and intelligibility.
When implemented inside the network, decoding is required to access the corrupted signal.
The AEC performance is strongly degraded by nonlinearity introduced by speech codecs.
The Echo Return Loss Enhancement (ERLE) can be less than 10 dB for low bit rate speech codecs.
We propose in this paper a coded domain AEC integrated in a smart transcoding strategy which directly modifies the Code Excited Linear Prediction (CELP) parameters.
The proposed system addresses simultaneously problems due to network interoperability and network voice quality enhancement.
The ERLE performance of this new approach during transcoding between Adaptive Multirate-NarrowBand (AMR-NB) modes is above 45 dB as required in Global System for Mobile Communications (GSM) specifications.
American Psychological Association (APA)
Thepie Fapi, Emmanuel Rossignol& Pastor, Dominique& Beaugeant, Christophe& Taddei, Hervé. 2010. Acoustic Echo Cancellation Embedded in Smart Transcoding Algorithm between 3GPP AMR-NB Modes. Journal of Electrical and Computer Engineering،Vol. 2010, no. 2010, pp.1-5.
https://search.emarefa.net/detail/BIM-506650
Modern Language Association (MLA)
Thepie Fapi, Emmanuel Rossignol…[et al.]. Acoustic Echo Cancellation Embedded in Smart Transcoding Algorithm between 3GPP AMR-NB Modes. Journal of Electrical and Computer Engineering No. 2010 (2010), pp.1-5.
https://search.emarefa.net/detail/BIM-506650
American Medical Association (AMA)
Thepie Fapi, Emmanuel Rossignol& Pastor, Dominique& Beaugeant, Christophe& Taddei, Hervé. Acoustic Echo Cancellation Embedded in Smart Transcoding Algorithm between 3GPP AMR-NB Modes. Journal of Electrical and Computer Engineering. 2010. Vol. 2010, no. 2010, pp.1-5.
https://search.emarefa.net/detail/BIM-506650
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-506650
