A Multirate Acoustic Echo Canceler Structure

Fumio Amano, Hector Perez Meana, Adriano de Luca, Gonzalo Duchen

Research output: Contribution to journalArticle

17 Scopus citations


A new subband echo canceler (SBEC) structure is proposed to reduce the transmission delay introduced by conventional SBEC structures, without distorting the near-end signal. The proposed structure is based on computing two output errors, one for using during single-talk and the other one for using during double-talk periods. With the SBEC structure we propose a double-talk detector with a subband configuration which allows a fast and accurate detection of double-talk periods, enabling the SBEC algorithm to track changes in the echo path impulse response when the near-end signal is absent. Computer simulations using actual speech signals, and suhjective evaluation tests are given to show the convergence performance, tracking and double-talk detection ability, of the proposed scheme. © 1995 IEEE
Original languageAmerican English
Pages (from-to)2172-2176
Number of pages1954
JournalIEEE Transactions on Communications
StatePublished - 1 Jan 1995
Externally publishedYes


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