Abstract
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.
Original language | English |
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Pages (from-to) | 2172-2176 |
Number of pages | 5 |
Journal | IEEE Transactions on Communications |
Volume | 43 |
Issue number | 7 |
DOIs | |
State | Published - Jul 1995 |
Externally published | Yes |