一维多谐频声源主动噪声控制算法  

Ivestigation and Realization of Algorithm of ANC Based on the Noise of One-dimensional Harmonic Frequency

作　　者：赵晓云[1] 李功宇[1] 王程荣[1] 阮重胜[1] 

机构地区：[1]昆明理工大学机电工程学院,昆明650093

出　　处：《科学技术与工程》2010年第33期8272-8276,共5页Science Technology and Engineering

摘　　要：就普遍存在于冷气机、冷却塔、抽油烟机、排风机及空调口的一维多谐频声源,运用主动噪声控制技术(ANC)进行实时消声。针对声源特性、通道传递函数非线性和控制系统的稳定性、运算量和收敛速度采用自适应滤波算法FX-LMS算法对声源进行降噪。用MATLAB软件仿真,试验表明该控制系统能将主动噪声消除技术应用在开放式空间,并有实时性消声的特性。The technology of active noise cancellation is already been proved useful for low frequency noise,and more efficient than traditional passive noise cancellation.Using technologe of ANC to level down noise of onedimensional harmonic frequency which comes from the cold air machine、cooling tower、kitchen rentilatore、exhaust blower and the air conditioning inlet.The Self-adaptive Filtering Method（FX-LMS method） was adopted to reduce the noise aiming at noise characteristic,channel＇s nolinear transfer function,stability of controling systerm,operation capacity and constringency spead.Then emulate with the software MATLAB,experimention show the system can level down the noise real time in the open zone.

关 键 词：一维多谐频声源 主动噪声控制 FX-LMS算法 实时消声 

分 类 号：TU273.2[建筑科学—建筑设计及理论]