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Performance of CLMS Algorithm for Real-time Application in ANC Systems of Road Noise Input

도로소음 입력의 ANC시스템에서 실시간 적용의 CLMS 알고리즘의 성능

  • Received : 2014.10.27
  • Accepted : 2014.11.14
  • Published : 2014.12.01

Abstract

Recently, many active noise control (ANC) systems, which employ the adaptive filter controlling method, have been reported for eliminating unwanted noise. ANC systems based on the filtered-X least mean square (FXLMS) algorithm have a problem with compensating the acoustic feedback of secondary route. It is difficult to apply the real time, because transfer function of secondary route must be measured by off-line method to solve this problem. In this paper, we propose the ANC system that applies a correlation LMS(CLMS) algorithm for improving a problem of transfer function measurement. The proposed algorithm is based on input of road noise. The proposed ANC systems have an advantage of real-time process without degradation of performance, although there are many calculation compared with FXLMS algorithm.

Keywords

References

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