An algorithm-independent burst-free adaptive hybrid

Abstract This paper presents a structural solution to the bursting phenomena in adaptive hybrids. An algorithm-independent burst-free adaptive echo canceler is developed by introducing a stand-by adaptive filter in a single adaptive hybrid system. The purpose of this filter is to cancel out the pole(s) of the closed-loop characteristic equation, which, generally, lead to the bursting phenomena in adaptive systems with feedback. Several simulations examples are presented in this paper to demonstrate the superiority of the new configuration under the different conditions that would normally cause bursting, including practical situations where we have actual speech signals.

[1]  Tyseer Aboulnasr,et al.  Practical adaptive hybrids with no bursting , 1993, 1993 IEEE International Conference on Acoustics, Speech, and Signal Processing.

[2]  C. Richard Johnson,et al.  Parameter drift in LMS adaptive filters , 1986, IEEE Trans. Acoust. Speech Signal Process..

[3]  Joseph B. Evans,et al.  Some experimental and theoretical results using a new adaptive filter structure for noise cancellation in the presence of crosstalk , 1985, ICASSP '85. IEEE International Conference on Acoustics, Speech, and Signal Processing.

[4]  Zhi Ding,et al.  Frequency-dependent bursting in adaptive echo cancellation and its prevention using double-talk detectors , 1990 .

[5]  Brian D. O. Anderson,et al.  Adaptive systems, lack of persistency of excitation and bursting phenomena , 1985, Autom..

[6]  C. Richard Johnson,et al.  Bursting in adaptive hybrids , 1989, IEEE Trans. Commun..