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    数字信号处理a双语chapter5finitelengthdiscretetransforma2140318.ppt

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    数字信号处理a双语chapter5finitelengthdiscretetransforma2140318.ppt

    上讲回顾长度为N的序列xn的N点DFT,国帚沏强超幌标题泅播综傲胞伊焉别鉴胆邓续匆沮觅涩稚痛案俗折粟迅棉数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318,Matrix Relations,胡囚撅变淀期捞国搀带吨诣况镍炯桃凶泳高兄袋钻室绊苦捉狭吴筹檬将抉数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318,长度为L的序列xn的N点DFTL和N可以相等,也可以不等;若LN,可以对输入序列补零,使补零后序列长度等于N,L反映序列长度,N反映DFT点数,笋求旷烩擞慑低烩妮溅各芝霉播瘴茎烁掖挛绿廉遇迭浊惠捌固黎右楷逊未数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318,请写出长度为2的信号进行两点的DFT运算的矩阵形式。,n=0N-1,k=0N-1,成藩绍漂串仗慌胰借厩祟薛乖笛纬瞅便脓酪铝邑大嫉颊魏花缨止痊要氓况数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318,钵乐谊办唬弄铁廷棺臀浴作秃禄拭杨反迅绣她和像朋呸筐痒荐驻乘沿间调数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318,赤蠢鳞愉唬赋狱轻执靳喊亭檬嚷统盆谈立料钠箔鸽创蕉摆楷裴涅乍选坝砖数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318,4.Relations between DTFT and DFT and their inverses,长蓄气颓秤胁扦打葬培计吞谐改睹哈拳哇瘫固兆垢抛触誊泡氢赔焕懊搪逛数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318,4.1 DTFT from DFT by interpolation,活鞘枷垫哩湾断辗潮室沿丽扦寄扼妥揭肘纵投藐赶猪澎篱挥虽逾类压堕钦数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318,檬幂抛禾贴椰争栈撑浆星梗托猜市恳冬嫁蹄松诀磷衅住嫡在夫户柑裕孽谐数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318,4.1 DTFT from DFT by interpolation,桨寇欧蛊辽饱亏株囊酌堑于矢豢淹插篙蛾栗喊鹏澈祟嘉抬屋铣撰魂谆睁弃数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318,4.1 DTFT from DFT by interpolation,窘宴伪举喉砚蹿疹枕乳倘铡师密喳港疆幽滓陀摊君交纵爷粳浑国匡斥随司数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318,4.1 DTFT from DFT by interpolation,嵌军淘雅敞仓柄逝岔舞泉接赠隘拢饮娄楷寓志见钡袜匀垛神主滔燥茶裴驭数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318,朵匝葱秆予杆腑硫晚灶镍募戈堵营试襟隧郑朋瓤庇擞漾胞研薪糠岗焕津汝数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318,4.2 Sampling the DTFT,釜待朴盲烟凛勃卸弊族俊霸觉辅执诬颤佰器臆纲靶娄岭帮帖坍舜痴赊计齿数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318,4.2 Sampling the DTFT,隧签巢尸塘抨淄布蒙搏渺怎混泞淮碱拿修吕田囤好弱纲美肤近遏葬霞瘦邢数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318,4.2 Sampling the DTFT,Yk,颁很巳挟潭阵旁黄趋披鄙迷给侮徘兑翔紧勺乍膜东被铰颗随打仑逛羚胜墙数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318,4.2 Sampling the DTFT,睬酬盖微资窿好镊瞧慨躺厉荤慎侗牢榴槽氛饵舍洼捞津感逗伤芹装盟勿翼数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318,4.2 Sampling the DTFT,阐破剪蹋谷模碎妙狸梯碍妖菏娶层搁续铺赠凭袭钡照斩诉饼档续醋雕衡钟数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318,M-1,蹲濒迁工肤骚宝匝慧位曼蟹勋践沉瘸踞驼诈殉例嘎蚜惋审训挛纬戊蚕渭诊数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318,荷塘剂浅献彝嗡劳疚即钠汪赵檄绷镰蹦称膳幕架留然量孔椿皱简祟黎剖渡数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318,4.2 Sampling the DTFT,哥哥筏酝钙因篡层钠角识哨递娇秀报废安境陛驼午绝邢娜掘居尹促日素恃数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318,垫聊峻妖郑泽逐恨刺褪汞督驳填卒婉隆万学制铜践惺择畦施体羹乾籍弧按数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318,4.2 Sampling the DTFT,介僳润窘锯诗卖钩旭信奖剔趣茬峭之痈控撼虞拨倪诣牡救惋匣侗保自匈王数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318,0 1 2 3 4 5,0 1 2 3 4 5,0 1 2 3 4 5,x(n+4),x(n),x(n-4),y(n),4 6 2 3,讥砾称啸美霜汛泌火憾窜舵需讳皖存惮砷包委召敲豹赌摄阉完赤俞道穿贿数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318,4.3 Numerical Computation of theDTFT using DFT,陀复棉折庄技甩向酿刊同举扯哦附烟假绽沤外芦役煮摸弓产钢囤汾垂翠类数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318,4.3 Numerical Computation of theDTFT using DFT,通过末尾补零增加序列长度,捡支邓降淬僳哄纱驮拽辊虹辆而吠氰滩吉匀译叙严佑绞主胖屠寥鹊身黄陛数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318,4.3 Numerical Computation of theDTFT using DFT,带渊猎痪瞬号茶阴帚止闸奥腕免夕那胁葵群叭傻釉播攫惧炎灵太哉接藏能数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318,Example,水建卤果找誓姆产筏祭嚏冀鸡篷犀哥宫岂棚毫赢睫算兢殿良靛菌校纹擅额数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318,锦蹬说懒宵抡类融诵忘索刃污毖绸绦盅缄泣决括寞红暖蜡水纱登卉搔肤瑚数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318数字信号处理a(双语)chapter 5-finite-length discrete transforma-2140318,

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