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The AEC performance is strongly degraded by nonlinearity introduced by speech codecs. The Echo Return Loss Enhancement (ERLE) can be less than 10\u2009dB 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\u2010NarrowBand (AMR\u2010NB) modes is above 45\u2009dB as required in Global System for Mobile Communications (GSM) specifications.<\/jats:p>","DOI":"10.1155\/2010\/902569","type":"journal-article","created":{"date-parts":[[2010,9,16]],"date-time":"2010-09-16T17:36:30Z","timestamp":1284658590000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Acoustic Echo Cancellation Embedded in Smart Transcoding Algorithm between 3GPP AMR\u2010NB Modes"],"prefix":"10.1155","volume":"2010","author":[{"given":"Emmanuel Rossignol","family":"Thepie Fapi","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Dominique","family":"Pastor","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Christophe","family":"Beaugeant","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Herv\u00e9","family":"Taddei","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2010,9,16]]},"reference":[{"key":"e_1_2_9_1_2","doi-asserted-by":"crossref","unstructured":"LuX.andChampagneB. 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