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loyment tribunal, seere clear about the terms of the agreement. It might be best to get advice from an experienced adviser, for example, at a Citizens Advice Bureau. if you win the case.If you are thinking about signing up for damagesbased agreement. In England and Wales, your solicitor can39。Further help.Employment tribunals are less formal than some other courts, but it is still a legal process and you will need to give evidence under an oath or affirmation.Most people find making a claim to an employment tribunal challenging. If you are thinking about making a claim to an employment tribunal, you should get help straight away from one of the organisations listed underappealedDismissal.You can make a claim to an employment tribunal, even if you haven39。t agree with the disciplinary action your employer has taken against youg an employment tribunal claimEmployment tribunals sort out disagreements between employers and employees.You may need to make a claim to an employment tribunal if:五、參考文獻(xiàn)程佩青 數(shù)字信號(hào)處理教程(第三版) 清華大學(xué)出版社羅軍輝、羅勇江、白義臣等 機(jī)械工業(yè)出版社劉波、文忠、曾涯等 MATLAB信號(hào)處理 電子工業(yè)出版社六、謝辭在本次設(shè)計(jì)中,借閱了圖書館的一些書籍,比自己的幫助比較大,同學(xué)間的相互討論與幫助也起到了很重要的作用。但是看到其他同學(xué)有用到Edit Text控件來作濾波器參數(shù)的輸入,感覺到自己的能力還是很有限,所以還需要加強(qiáng)學(xué)習(xí)。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)。通過這次課設(shè),使我對(duì)濾波器有了更深的認(rèn)識(shí),特別是濾波器參數(shù)對(duì)濾波器性能的影響,因?yàn)橥◣Ы刂诡l率、阻帶截止頻率、通帶波紋系數(shù)、阻帶波紋系數(shù)都是要影響濾波器的階數(shù),而濾波器的階數(shù)越大,其選頻特性就越好。在信號(hào)回放時(shí),低通和帶阻濾波器回放的音頻信號(hào)與原信號(hào)相比,音色有一點(diǎn)低沉;而高通和帶通濾波器回放的音頻信號(hào),幾乎已經(jīng)聽不到什么聲音,這也說明了這兩種濾波器產(chǎn)生的信號(hào)頻率只占原信號(hào)頻率范圍中較少的部分。四、結(jié)果分析與體會(huì)濾波器的作用就是濾除掉阻帶內(nèi)有頻率分量,保留通帶內(nèi)的頻率分量。同理于帶通和帶阻濾波器??梢钥闯?,巴特沃思濾波器的頻率特性曲線無論在通帶還是在阻帶內(nèi),都是頻率的單調(diào)函數(shù),切比雪夫Ⅰ型濾波器的幅頻特性在通帶內(nèi)是等波紋的,阻帶內(nèi)是單調(diào)的。6)“關(guān)閉窗口”按鍵的回調(diào)函數(shù)function pushbutton6_Callback(hObject, eventdata, handles)close ,單擊GUI主窗口工具欄中的“激活運(yùn)行”按鈕,在GUI界面中按下“原始信號(hào)”按鍵就可以看到原始信號(hào)的波形和頻譜,并播放原始信號(hào);選擇濾波器種類(巴特沃思或切比雪夫),然后按下“高通”、“低通”、“帶通”、“帶阻”其中一個(gè)按鍵,就可以看到原信號(hào)經(jīng)過濾波器后的信號(hào)的波形與頻譜,并播放該信號(hào)。axes()。axes()。sound(y,fs,bits)。e:\39。)。plot(f,abs(h),39。[h,f]=freqz(num,den,256,fc)。axes()。axes()。sound(x,fc,bits)。)。[num,den]=cheby1(N,rp,Wc,39。 %返回2N階帶阻濾波器。stop39。)[N,Wc]=buttord(wp,ws,rp,rs)。if get(,39。wp=2*fp/fc。rs=40。fs=[3000,8000]。)。4)“帶阻”按鍵的回調(diào)函數(shù)function pushbutton4_Callback(hObject, eventdata, handles)[y,fs,bits]=wavread(39。k39。axes()。plot(abs(X))。plot(x)。X=fft(x)。endx=filter(num,den,y)。else [N,Wc]=cheb1ord(wp,ws,rp,rs)。[num,den]=butter(N,Wc)。value39。ws=2*fs/fc。fc=40000。rp=。fp=[3000,8000]。e:\39。)。plot(f,abs(h),39。[h,f]=freqz(num,den,256,fc)。axes()。axes()。sound(x,fc,bits)。)。[num,den]=cheby1(N,rp,Wc,39。 %返回N階高通濾波器。high39。)[N,Wc]=buttord(wp,ws,rp,rs)。if get(,39。wp=2*fp/fc。rs=40。fs=1000。)。2)“高通”按鍵的回調(diào)函數(shù)function pushbutton2_Callback(hObject, eventdata, handles)[y,fs,bits]=wavread(39。)。plot(f,abs(h),39。 %求濾波器的頻率響應(yīng)。 %在axes4坐標(biāo)軸上畫出x信號(hào)的頻譜圖。axes()。plot(x)。 %將x信號(hào)進(jìn)行快速傅里葉變換。 %將濾波后的信號(hào)x進(jìn)行回放。 %根據(jù)傳輸函數(shù)的分子和分母多項(xiàng)式的系數(shù)得到模擬濾波器,并將y通過該濾波器,得到x。 %求傳輸函數(shù)的分子和分母多項(xiàng)式的系數(shù)。 %估算切比雪夫Ⅰ型濾波器的階數(shù)N和截止頻率Wc