兵工自动化
兵工自動化
병공자동화
ORDNANCE INDUSTRY AUTOMATION
2013年
6期
86-89
,共4页
LMS%自适应算法%FPGA%XILINX%System Generator
LMS%自適應算法%FPGA%XILINX%System Generator
LMS%자괄응산법%FPGA%XILINX%System Generator
LMS%adaptive algorithm%FPGA%XILINX%System Generator
为了解决传统固定系数滤波器不能处理无法预知信号和噪声特性，提出一种基于 System Generator 的音频数字滤波器的设计方案。介绍了自适应滤波器基本原理及算法，采用LMS算法并利用System Generator构建了滤波器仿真模型。仿真结果证明：经过自适应滤波器的处理后，可较好地滤除信号中的噪声；该方法设计的滤波器有效地实现了对音频信号的自适应滤波，滤波效果良好。
為瞭解決傳統固定繫數濾波器不能處理無法預知信號和譟聲特性，提齣一種基于 System Generator 的音頻數字濾波器的設計方案。介紹瞭自適應濾波器基本原理及算法，採用LMS算法併利用System Generator構建瞭濾波器倣真模型。倣真結果證明：經過自適應濾波器的處理後，可較好地濾除信號中的譟聲；該方法設計的濾波器有效地實現瞭對音頻信號的自適應濾波，濾波效果良好。
위료해결전통고정계수려파기불능처리무법예지신호화조성특성，제출일충기우 System Generator 적음빈수자려파기적설계방안。개소료자괄응려파기기본원리급산법，채용LMS산법병이용System Generator구건료려파기방진모형。방진결과증명：경과자괄응려파기적처리후，가교호지려제신호중적조성；해방법설계적려파기유효지실현료대음빈신호적자괄응려파，려파효과량호。
In order to solve the problems of traditional digital filter with fixed coefficient that can’t process unknown noise of audio signal, this paper put forwards a design scheme of digital audio filter based on System Generator. The principle and algorithm of adaptive filter are introduced, and simulation model of filter is constructed using LMS algorithm by System Generator. The simulation result shows that noise signal can be filtered after processing of adaptive filter, the filter based on design scheme can realize adaptive filter for audio signal and achieve great effect.
