Research on Active Control of Vehicle Interior Noise Based on Selective Attenuation Method

Based on frequency selective LMS algorithm of the technology of active noise control,by using selfdesigned adaptive active noise control system,the low frequency noise selective cancellation control vehicle was tested when the test engine worked in the 800 r / min,2 200 r / min,3 000 r / min. The results show that the developed active noise control system has better cancellation effect under steady state conditions of engine firing frequency and four stage harmonic frequency,and co-pilot's left ear position obtained noise reduction,respectively 8. 2 dB( Lin),6. 6 dB( Lin) and 9. 7 dB( Lin).