带窗全相位数字滤波器设计与应用研究-信号与信息处理专业毕业论文.docx

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带窗全周相数字抑制器设计与效能研讨-臂板信号体系与情报整理专业工程.docx

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国文摘要
本论文讨论更迭域带窗堆叠数字抑制器和它在自适应臂板信号体系处置、二维滤波模板的设计、光谱切除术和图像多分析系数辨析的效能。苒。先, 加窗n阶频域堆叠全周相数字抑制器 APF公司)。它的输出等r与某时刻输出褶关的N段臂板信号体系作为体系输出时所发生的N个输出和的等比中数。在此基础上,做出计划了一种dct域。、dwa-domai说话中肯apf观念, 排出了逆更迭域对应的fir用模子做。,它还做出计划不注意窗户、单窗和双窗体系的观念。全周相数字抑制器成地处理了宽s的突然停止效应, 滤波音响效果优于非堆叠处置。
其次,继后对APF的幅频和相额特点的辨析,赠送了apf体系的严格的线形的周相、频率域满意采样定理的授权。正确的体系效能,因为lms原则和矩形bi的窗口职务设计算法,二元分析算法将体系窗口乐趣低位,按照属性的界说方式多级分析。试验泄漏,南这两种算法抓住的窗罚款地增加了抑制器在通带和阻带说话中肯皱并可获得人的阻带阻尼。
第三,apf抑制器的实质辨析,做出计划了一种额外的堆叠(w0)算法。该算法在自适应臂板信号体系处置说话中肯效能,因为工夫域的wo-lms算法和更迭域的wo-tlms算法。自适应辨识试验后果,该算法具有收敛昌盛快、稳固度小的优点,在谱辨析、模板设计与多分析系数辨析说话中肯wo算法,取等等良好的音响效果。
终于,simulink模块在matlam软件说话中肯效能,努力赶上的应验与校对 ap的滤波效能及优点。
关键词:全阶段,堆叠额外的,自适应臂板信号体系处置,谱辨析,多分析系数辨析
AB 面
This dissertalion deals mainly with windowed overlapping digital filler in Uansfoml domain,including its application in adaptive signal processing、design of 2-dimensional filtering template、sptx:12″tllll analysis and multiresolution analysis 图像,etc First,the paper 预先观看 a novel N-order overlapping digital filter with front and back windows in frequency
邓智布啊 phase digit越fiUer(APn which output 值得的幻术的 回忆 ofsum ofoutputs from
the system with Nfragmentary inputs relevant to the si印al at some tinae Based on this module,
&ome other notions as APF i玎DCT do蚴in、DWA and DST domain黜advocaled;IS well,
And the corresponding FIR modules are theoretically deduced out respectively,as well aS proposing no-window、单一窗口 and 双窗口 system lt call be verified by experimental resuks T11越南主宰 phase digital filter 不幸的 eliminates the distortion resulthag from台macatinK with much better 音响效果}11an-zi-agrn电视机1牛 processing
SecondK the conditions for strict finear ptlase、sampling theoremin frequency donmin of AOF system are presented in detail through analysis ofi谯amplitude and phase characteristics to frequency.In order tO promote the performance ofAOF system,two algorithms on how to
efficiently design the window,one of which is based on LMS principle and the other is bifurcating of rectan
物质转载自桃豆。请索引发明

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