Title :
Adaptive Feedback Canceller: Entrainment
Author :
Theverapperuma, Lalin S. ; Kindred, Jon S.
Author_Institution :
Electr. & Comput. Eng. Dept., Minnesota Univ., Minneapolis, MN
Abstract :
This paper explains the chaotic artifact (entrainment) observed when correlated input signals are presented to an adaptive feedback canceller. When an adaptive feedback canceller is being entrained, a few intermittent new frequency components are manifested while keeping the system near the boundary of instability. By applying mean square error (MSE) surface concepts to a simplified feedback canceller, we demonstrate the fundamental cause for the phenomenon and show that this is inherent to a feedback canceller structure
Keywords :
acoustic signal processing; correlation methods; mean square error methods; MSE; adaptive feedback canceller; chaotic artifact; frequency component; mean square error; signal correlation; Adaptive filters; Chaos; Distortion; Frequency; Laboratories; Mean square error methods; Output feedback; System identification; Transfer functions; White noise; Adaptive Feedback Cancellation; Entrainment; LMS; Mean Square Error; System Identification Configuration; bias artifact; electro-acoustic system;
Conference_Titel :
Digital Signal Processing Workshop, 12th - Signal Processing Education Workshop, 4th
Conference_Location :
Teton National Park, WY
Print_ISBN :
1-4244-3534-3
Electronic_ISBN :
1-4244-0535-1
DOI :
10.1109/DSPWS.2006.265384
