Active noise control in a duct to cancel broadband noise

1st Nommensen International Conference on Technology and Engineering

Chen, Kuan-Chun^1 ; Chang, Cheng-Yuan^1 ; Kuo, Sen M.^1

Active Noise and Vibration Control Development Center, Department of Electrical Engineering, Chung Yuan Christian University, Taiwan^1

关键词: Active noise control (ANC);    Broadband noise;    Duct noise;    Feed forward;    Single channels;    Tonal noise;    Tonal signal;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/237/1/012015/pdf
DOI  :  10.1088/1757-899X/237/1/012015

来源: IOP

【 摘 要 】

The paper presents cancelling duct noises by using the active noise control (ANC) techniques. We use the single channel feed forward algorithm with feedback neutralization to realize ANC. Several kinds of ducts noises including tonal noises, sweep tonal signals, and white noise had investigated. Experimental results show that the proposed ANC system can cancel these noises in a PVC duct very well. The noise reduction of white noise can be up to 20 dB.