Acoustic Echo Cancellation Embedded in Smart Transcoding Algorithm between 3GPP AMR-NB Modes
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 pe...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2010-01-01
|
| Series: | Journal of Electrical and Computer Engineering |
| Online Access: | http://dx.doi.org/10.1155/2010/902569 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832550422553821184 |
|---|---|
| author | Emmanuel Rossignol Thepie Fapi Dominique Pastor Christophe Beaugeant Hervé Taddei |
| author_facet | Emmanuel Rossignol Thepie Fapi Dominique Pastor Christophe Beaugeant Hervé Taddei |
| author_sort | Emmanuel Rossignol Thepie Fapi |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-6d831da6e32b4ad88551364467292aac |
| institution | Kabale University |
| issn | 2090-0147 2090-0155 |
| language | English |
| publishDate | 2010-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Electrical and Computer Engineering |
| spelling | doaj-art-6d831da6e32b4ad88551364467292aac2025-02-03T06:06:51ZengWileyJournal of Electrical and Computer Engineering2090-01472090-01552010-01-01201010.1155/2010/902569902569Acoustic Echo Cancellation Embedded in Smart Transcoding Algorithm between 3GPP AMR-NB ModesEmmanuel Rossignol Thepie Fapi0Dominique Pastor1Christophe Beaugeant2Hervé Taddei3Media Application Server, Mas DEV, Genband Inc., 3500 Carling Avenue, Ottawa, ON, K2H 8E9, CanadaInstitut Télécom, Télécom Bretagne, UMR CNRS 3192 Lab-STICC, Université Européenne de Bretagne, Technopôle Brest Iroise-CS 83818, 29238 Brest Cedex, FranceDSP Software, Business Group Communication Solutions, Infineon Technologies France-R&D Center, GAIA-2600, Route des Cretes-06560 Sophia-Antipolis, FranceHuawei Technologies Co., Ltd., EU R&D Center, Riesstrasse 25, Munich 80992, GermanyAcoustic 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.http://dx.doi.org/10.1155/2010/902569 |
| spellingShingle | Emmanuel Rossignol Thepie Fapi Dominique Pastor Christophe Beaugeant Hervé Taddei Acoustic Echo Cancellation Embedded in Smart Transcoding Algorithm between 3GPP AMR-NB Modes Journal of Electrical and Computer Engineering |
| title | Acoustic Echo Cancellation Embedded in Smart Transcoding Algorithm between 3GPP AMR-NB Modes |
| title_full | Acoustic Echo Cancellation Embedded in Smart Transcoding Algorithm between 3GPP AMR-NB Modes |
| title_fullStr | Acoustic Echo Cancellation Embedded in Smart Transcoding Algorithm between 3GPP AMR-NB Modes |
| title_full_unstemmed | Acoustic Echo Cancellation Embedded in Smart Transcoding Algorithm between 3GPP AMR-NB Modes |
| title_short | Acoustic Echo Cancellation Embedded in Smart Transcoding Algorithm between 3GPP AMR-NB Modes |
| title_sort | acoustic echo cancellation embedded in smart transcoding algorithm between 3gpp amr nb modes |
| url | http://dx.doi.org/10.1155/2010/902569 |
| work_keys_str_mv | AT emmanuelrossignolthepiefapi acousticechocancellationembeddedinsmarttranscodingalgorithmbetween3gppamrnbmodes AT dominiquepastor acousticechocancellationembeddedinsmarttranscodingalgorithmbetween3gppamrnbmodes AT christophebeaugeant acousticechocancellationembeddedinsmarttranscodingalgorithmbetween3gppamrnbmodes AT hervetaddei acousticechocancellationembeddedinsmarttranscodingalgorithmbetween3gppamrnbmodes |