Title :
Echo cancellation with delay estimation
Author :
Magotra, N. ; Lenihan, G. ; Sirivara, S. ; Natarajan, T.R.
Author_Institution :
Dept. of Electr. & Comput. Eng., New Mexico Univ., Albuquerque, NM, USA
Abstract :
Echo cancellation research using digital signal processing (DSP) has been conducted for some time now. This paper presents some techniques for dealing with echoes where the delay time can range from very short, few milliseconds, to very long, on the order of hundreds of milliseconds. The algorithm developed and investigated as part of the research presented in this paper has also been designed for real-time implementation on Texas Instruments TMS320C3X family of floating-point DSP chips
Keywords :
delays; echo suppression; real-time systems; recursive estimation; signal processing; TMS320C3X family; Texas Instruments DSP chips; delay estimation; digital signal processing; echo cancellation; floating-point DSP chips; real-time implementation; Adaptive filters; Autocorrelation; Delay estimation; Echo cancellers; Equations; Finite impulse response filter; Impedance; Recursive estimation; Smoothing methods; State estimation;
Conference_Titel :
Circuits and Systems, 1997. Proceedings of the 40th Midwest Symposium on
Conference_Location :
Sacramento, CA
Print_ISBN :
0-7803-3694-1
DOI :
10.1109/MWSCAS.1997.662179
