| Title |
Performance of CLMS Algorithm for Real-time Application in ANC Systems of Road Noise Input |
| Authors |
문학룡(Moon, Hak-Ryong) ; 손진근(Shon, Jin-Geun) |
| DOI |
https://doi.org/10.5370/KIEEP.2014.63.4.260 |
| Keywords |
Acoustic feedback ; ANC(active noise control) ; Correlation LMS(CLMS) ; FXLMS ; Road noise input ; Transfer function of second route |
| 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. |