OPTIMIZATION OF ERROR PATH MODEL IN FILTERED-X LMS ALGORITHM FOR NAROW BAND NOISE SUPPRESSION

  • Kim, Hyoun-Suk (Department of Mechanical Engineering, Center for Noise and Vibration Control (NoViC), Korea Advanced Institute of Science and Technology) ;
  • Park, Youngjin (Department of Mechanical Engineering, Center for Noise and Vibration Control (NoViC), Korea Advanced Institute of Science and Technology)
  • Published : 1995.10.01

Abstract

Adaptive algorithms based on gradient adaptation have been extensively investigated and successfully jointed with active noise/vibration control applications. The Filtered-X LMS algorithm became one of the basic feedforward algorithms in such applications, but still is not fully understood. The error path model effect on the Filtered-X LMS algorithm has been under the investigation and some useful properties related stability has been discovered. We are interested in utilizing the fact that the model error caused by the way optimizing the error path model in a view point of convergence speed of Filtered-X LMS algorithm for pure tone noise suppression application without any performance loss at steady state.