Subband echo canceler structure

Hector Perez Meana, Mariko Nakano Miyatake, Laura Ortiz Balbuena, Alejandro Martinez Gonzalez, Gonzalo Duchen Sanchez

Research output: Contribution to conferencePaper


A Subband echo canceler structure is proposed which enables the use of large decimation factors with a relatively short transmission delay, while keeping the near-end signal undistorted. With the subband echo canceler structure we propose a time varying step size LMS algorithm, which reduces distortion during double-talk without increasing the computational cost nor decreasing the convergence rate of the conventional normalized LMS algorithm. Simulation results using white noise and actual speech signals show that by using relatively large decimation factors, in addition to reducing the computational load, convergence rates becomes almost independent of the statistics of the input signals. Computer simulations also show that proposed adaptation algorithm greatly reduces distortion during double talk periods.
Original languageAmerican English
Number of pages1199
StatePublished - 1 Dec 1994
Externally publishedYes
EventNational Conference Publication - Institution of Engineers, Australia -
Duration: 1 Dec 1994 → …


ConferenceNational Conference Publication - Institution of Engineers, Australia
Period1/12/94 → …


Cite this

Meana, H. P., Miyatake, M. N., Balbuena, L. O., Gonzalez, A. M., & Sanchez, G. D. (1994). Subband echo canceler structure. 1333-1338. Paper presented at National Conference Publication - Institution of Engineers, Australia, .