蚇云南大学信息学院莆一、,播放出来;,产生延时,混响、回声、滤波等等;螈二、,观察时域、频域并记录;;蚂三、主要算法与程序衿本实验应用到GUI图形界面,建立图形界面时,就生成相应的m文件,图形的生成代码会自动生成;以下是本人自己编写的程序:b5E2RGbCAP袇以下是图形界面上一个按钮所对应的操作执行:肃%---(hObject,eventdata,handles>%按钮生成句柄p1EanqFDPw薇%hObjecthandletopushbutton1(seeGCBO>羅%eventdatareserved-tobedefinedinafutureversionofMATLABDXDiTa9E3d蒂%handlesstructurewithhandlesanduserdata(seeGUIDATA>RTCrpUDGiT肃[x,fs,bits]=wavread(''>。%%读取音频蚈x=x(:,1>。莈axes(>。膅plot(x>。蕿title('shiyu'>。蝿Y=fft(x>。蒆axes(>。薅plot(abs(Y>>。莀title('pinyu'>。sound(x,fs,bits>。%声音回放薇无限回声按钮的程序:薄%---(hObject,eventdata,handles>5PCzVD7HxA肀[x,fs,bits]=wavread(''>。%读取音频薈x=x(:,1>。羇Bz=[,zeros(1,7000>,1]。蒃Az=[1,zeros(1,7000>,]。%freqz(Bz,Az>。袀yy2=filter(Bz,Az,x>。蚀axes(>。肅plot(yy2>。袃title('shiyu'>。薁YY2=fft(yy2>。蒇axes(>。莇plot(abs(YY2>>。节title('pinyu'>。sound(yy2,fs,bits>。芁生成坐标图函数:(hObject,eventdata,handles>jLBHrnAILg薆带通滤波器的设计与滤波:羆%---(hObject,eventdata,handles>xHAQX74J0X薀[signal,fs,bits]=wavread(''>。%读取音频1k-2kLDAYtRyKfE蚄w2p1=2*pi*1200/fs。w2p2=2*pi*1800/fs。蒅w2s1=2*pi*800/fs。w2s2=2*pi*2200/fs。螂w2p1t=tan(w2p1/2>。w2p2t=
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