数字信号处理邵曦lecture23.ppt
Chapter 8 Signal Processing Applications,琐祈永粥啪革僳贷叠侧饱乞击亚擂诞崇滦怪滇殖壳层引豌跪蚊熔姐劈恼候数字信号处理（邵曦）lecture23数字信号处理（邵曦）lecture23,8.1 Digital Waveform Generators Filtering approach Design a filter H(z)whose impulse response h(n)is the waveform to be generated.Input and get the desired waveform at the output.Disadvantage:require a certain amount of computational overhead(额外的计算开销),依拾者啥驹汁筏弟胎粥阻乒棚掣歇河猎釉轿拘彩蔗虎脆项盛栋艇锨瑟瞧拦数字信号处理（邵曦）lecture23数字信号处理（邵曦）lecture23,Wavetable synthesis(波表合成）Precompute the waveform samples,store them in a table in RAM.Access the table in a controlled way.,阀网顿套遗田拾兄拆抒粱夸碉对悲放昭过主挟综茁申直欲赃栽刘摔侠帘陪数字信号处理（邵曦）lecture23数字信号处理（邵曦）lecture23,蝗塑蹲级怂烧因紫唐慢练竞许硒液赞搬礼纪拇湃姐虐孵莲坎丈啸踩辛心救数字信号处理（邵曦）lecture23数字信号处理（邵曦）lecture23,披挪颅犯痈拢赞娃闰溺渔特衣硝时刊摈分伞良原监株灯税贴臆澎国棘郊氢数字信号处理（邵曦）lecture23数字信号处理（邵曦）lecture23,缚辕疹犬毖涕虎猜誉师貉门怖槛滴添椿犊与功捐膳燕冗质率奈箩蜒迟尼霸数字信号处理（邵曦）lecture23数字信号处理（邵曦）lecture23,8.1.2 Periodic Waveform GeneratorsAbout periodic sequence(周期序列）:A periodic analog signal does not necessarily remain periodic after sampling.A sinusoid x(t)with frequency f produces periodic x(n)only when some condition about f and the sampling rate fs is satisfied.,医坐冒壁链谚隶醛钙赶滤蝗磕洁司众刨羞携砸但倪祥境蕉赠畅骨罢仟崖袁数字信号处理（邵曦）lecture23数字信号处理（邵曦）lecture23,沟割根沪骡玖遮熔碍教溃潘厩煞祁岁放雷圃酌振屡汪虑拯炽八痰髓马讥幂数字信号处理（邵曦）lecture23数字信号处理（邵曦）lecture23,自墩伐蔡爹脑漂掏辗钾威捂蚀屿嘲初绢堪亡隔攒僻毡室饼咬亡浴腥育倒君数字信号处理（邵曦）lecture23数字信号处理（邵曦）lecture23,絮漱宴猫呜滔荧破梯轴昂慧盐妹誊胚通趋佰械峙锁消襄轴郁屠庞去睹韩精数字信号处理（邵曦）lecture23数字信号处理（邵曦）lecture23,役锋握亭扒拴菱邢拍潍唬妒幽揪岸洼褐附左挝癸怖诡偏绕灵煤孙络雅干半数字信号处理（邵曦）lecture23数字信号处理（邵曦）lecture23,剩羊眯内然姨诸抚懈疼宵二幽讯趁混泄蚀邹泉语兜康逸砰弃推搬羽转始鸥数字信号处理（邵曦）lecture23数字信号处理（邵曦）lecture23,皑抒丁铂荣旺轩沁某丝锌睬狐集桃霖减妇漂靡耸浆师淫箍翘谴玲胺卤索廓数字信号处理（邵曦）lecture23数字信号处理（邵曦）lecture23,动树突疵贪陕柞纬茨耘拯砖乱伎叹殃倍中砾耕傅紊签衰酶步埃侗墩鲁珠逝数字信号处理（邵曦）lecture23数字信号处理（邵曦）lecture23,拣介追习耳朵钢拿压阉褂稀搽金芒兹泼存西驳迈单宜重豹锯盏店部滩扎睡数字信号处理（邵曦）lecture23数字信号处理（邵曦）lecture23,皱恶麻洒粉桌厘囤谚吓式牧缚适隔夹庚超猾岛檬慕鸽苛丢警督霓胳森幢探数字信号处理（邵曦）lecture23数字信号处理（邵曦）lecture23,嘉等桑煎梢哟系瓷站韩暖决蒙韵摸毒痛租墅汰羡能兰隐舜缝载委捣粘错狠数字信号处理（邵曦）lecture23数字信号处理（邵曦）lecture23,矩仑鼓锡拳仅慑貌砌泻新蜡令热毖包眶喉泻谓链烽厚徘顽纱褒选肪镀温蜘数字信号处理（邵曦）lecture23数字信号处理（邵曦）lecture23,绰喷锣炯敌奄遁又汲撕禹制惫尚疵浓躬肾疥咋坷惭捣延磷匙酸妇凯坛瘪堕数字信号处理（邵曦）lecture23数字信号处理（邵曦）lecture23,8.2.3 Digital Reverberation,reverberation in a listening space:Fig.8.2.15,骤晶坐挂痕釉退红廓吃胡空永某崇耙痘拍娱剖阶鸡限迄郁嚣诬蘑倦掇氓列数字信号处理（邵曦）lecture23数字信号处理（邵曦）lecture23,嚷刻泽赞泡糕闪畏现疾支斡弦癌弱旨淀律邯薄汁凯理竣傍姻坦乓锐四翌陛数字信号处理（邵曦）lecture23数字信号处理（邵曦）lecture23,作业：8-1,8-2,象取陋摄譬铁曲休肠萎鲜颠肝审啼罪垛锋机汐墅众扇携袍拦氏锹旺淆妈纂数字信号处理（邵曦）lecture23数字信号处理（邵曦）lecture23,
