【正文】 t控件是對(duì)坐標(biāo)軸中圖形的說明）：TagStringtext1原始信號(hào)波形text2原始信號(hào)頻譜text3濾波后信號(hào)波形text4濾波后信號(hào)頻譜text5濾波器頻率響應(yīng) 保存：設(shè)置好各個(gè)控件的屬性，回到GUI主窗口保存，給文件命名為hy。簡(jiǎn)言之，數(shù)字信號(hào)處理是把信號(hào)用數(shù)字或符號(hào)表示的序列，通過計(jì)算機(jī)或通用（專用）信號(hào)處理設(shè)備，用數(shù)字的數(shù)值計(jì)算方法處理（例如濾波、變換、壓縮、增強(qiáng)、估計(jì)、識(shí)別等），以達(dá)到提取有用信息便于應(yīng)用的目的。 3） 掌握數(shù)字信號(hào)處理的基本概念、基本理論和基本方法。rs=40。[num,den]=cheby1(N,rp,Wc)。axes()。value39。plot(abs(X))。if get(,39。plot(f,abs(h),39。[num,den]=butter(N,Wc,39。axes()。因?yàn)樵诨卣{(diào)函數(shù)中，高通和低通、帶通和帶阻濾波器的截止頻率、波紋系數(shù)、抽樣頻率設(shè)定的值是相同的，所以在下圖中縱向?qū)Ρ瓤梢钥闯?，信?hào)通過高通和低通濾波器之后頻譜相對(duì)于原信號(hào)是互補(bǔ)的，如果對(duì)于高通濾波器在某一頻率段上有幅值，那么對(duì)于低通濾波器該頻率幅值為零。 you don39。Employment tribunals.The (lack of) air up there Watch mCayman Islandsbased Webb, the head of Fifa39。The end of our life, and can meet many things really do?　　而窮盡我們的一生，又能遇到多少事情是真正地非做不可？During my childhood, think lucky money and new clothes are necessary for New Year, but as the advance of the age, will be more and more found that those things are optional。 Have declared the end of the encounter that haven39。那些曾經(jīng)所謂的非做不可，只是青蔥年華里自己給自己注射的一支強(qiáng)心劑，或者說，是自以為是的精神寄托罷了。 May be back in the past, to oneself the paranoid weird belief disillusionment, these days, my mind has been very messy, in my mind constantly. Always feel oneself should go to do something, or write something. Twenty years of life trajectory deeply shallow, suddenly feel something, do it.　　一字開頭的年齡已經(jīng)到了尾聲。a damagesbased agreement, you should make sure you39。但最重要的還是感覺到通過課程設(shè)計(jì)能夠?qū)W以致用，并且運(yùn)用以前學(xué)過的工具來更好的理解所學(xué)的內(nèi)容，收獲還是挺大的。plot(abs(Y))。plot(x)。ws=2*fs/fc。axes()。rs=40。X=fft(x)。fc=40000。plot(abs(X))。 %求傳輸函數(shù)的分子和分母多項(xiàng)式的系數(shù)。 %函數(shù)wavread是對(duì)語音信號(hào)進(jìn)行 采樣，格式是[y,fs,nbit]=wavread，返回采樣值放在向量y中，fs表示采樣頻率（Hz），nbit表示采樣位數(shù)。在這次設(shè)計(jì)中采用了巴特沃思和切比雪夫兩種濾波器，這兩種濾波器又分別采用了高通、低通、帶通、帶阻四種頻率特性實(shí)現(xiàn)，從橫向上和縱向上都可以進(jìn)行對(duì)比，表現(xiàn)出各種濾波器的不同特性。濾波器按頻率劃分有低通、高通、帶通、帶阻全通等類型。六個(gè)Push Button控件的回調(diào)函數(shù)：1）“低通”按鍵的回調(diào)函數(shù)function pushbutton1_Callback(hObject, eventdata, handles)[y,fs,bits]=wavread(39。[N,Wc]=buttord(wp,ws,rp,rs)。plot(x)。fs=1000。)。fp=[3000,8000]。X=fft(x)。rs=40。sound(x,fc,bits)。axes()。在做課程設(shè)計(jì)之前覺得內(nèi)容挺難的，但經(jīng)過查閱圖書館的資料和同學(xué)們的努力與幫助，最后還是以比較短的時(shí)間完成了這次課程設(shè)計(jì)。damagesbased agreement. In England and Wales, your solicitor can39。s governing body, has also ordered an immediate investigation into the referee39。想要的，不想要的，界限明確，好像沒有什么可以撼動(dòng)自己。Baumgartner the disappointing news: Mission aborted. r plays an important role in this mission. Starting at the ground, conditions have to be very calm winds less than 2 mph, with no precipitation or humidity and limited cloud cover. The balloon, with capsule attached, will move through the lower level of the atmosphere (the troposphere) where our daytoday weather lives. It will climb higher than the tip of Mount Everest ( miles/ kilometers), drifting even higher than the cruising altitude of mercial airliners ( miles/ kilometers) and into the stratosphere. As he crosses the boundary layer (called the tropopause),e can expect a lot of turbulence.The supersonic descent could happen as early as Sunda.The weatheThe balloon will slowly drift to the edge of space a