Title :
A new double talk detector using the lattice predictors for an acoustic echo canceller
Author :
Yoo, Jae Ha ; Cho, Sung Ho
Author_Institution :
Multimedia Res. Lab., LG Electron. Inc., Seoul, South Korea
Abstract :
We propose a new intelligent double talk detector that can not only detect double talk fast but also distinguish the echo path change from the double talk without a decision delay. The detection mechanism is performed by observing the change rate of the reflection coefficients of the two lattice predictors that are placed on the near-end and far-end terminals. The excellence of the proposed method is verified by computer simulations using real speech signals
Keywords :
acoustic signal processing; adaptive filters; adaptive signal processing; digital filters; echo suppression; filtering theory; prediction theory; signal detection; speech processing; voice communication; acoustic echo canceller; change rate; computer simulations; digital adaptive filter; echo path change; far-end terminal; hands-free speech communication; intelligent double talk detector; lattice predictors; near-end terminal; real speech signals; reflection coefficients; Acoustic signal detection; Adaptive filters; Background noise; Delay; Detectors; Digital filters; Echo cancellers; Laboratories; Lattices; Reflection;
Conference_Titel :
TENCON '97. IEEE Region 10 Annual Conference. Speech and Image Technologies for Computing and Telecommunications., Proceedings of IEEE
Conference_Location :
Brisbane, Qld.
Print_ISBN :
0-7803-4365-4
DOI :
10.1109/TENCON.1997.648250
