语音处理大作业代码_matlab_GUI_语音界面_

function varargout = gui_5(varargin) % GUI_5 MATLAB code for gui_5.fig % GUI_5, by itself, creates a new GUI_5 or raises the existing % singleton*. % % H = GUI_5 returns the handle to a new GUI_5 or the handle to % the existing singleton*. % % GUI_5('CALLBACK',hObject,eventData,handles,...) calls the local % function named CALLBACK in GUI_5.M with the given input arguments. % % GUI_5('Property','Value',...) creates a new GUI_5 or raises the % existing singleton*. Starting from the left, property value pairs are % applied to the GUI before gui_5_OpeningFcn gets called. An % unrecognized property name or invalid value makes property application % stop. All inputs are passed to gui_5_OpeningFcn via varargin. % % *See GUI Options on GUIDE's Tools menu. Choose "GUI allows only one % instance to run (singleton)". % % See also: GUIDE, GUIDATA, GUIHANDLES % Edit the above text to modify the response to help gui_5 % Last Modified by GUIDE v2.5 25-May-2020 23:28:24 % Begin initialization code - DO NOT EDIT gui_Singleton = 1; gui_State = struct('gui_Name', mfilename, ... 'gui_Singleton', gui_Singleton, ... 'gui_OpeningFcn', @gui_5_OpeningFcn, ... 'gui_OutputFcn', @gui_5_OutputFcn, ... 'gui_LayoutFcn', [] , ... 'gui_Callback', []); if nargin && ischar(varargin{1}) gui_State.gui_Callback = str2func(varargin{1}); end if nargout [varargout{1:nargout}] = gui_mainfcn(gui_State, varargin{:}); else gui_mainfcn(gui_State, varargin{:}); end % End initialization code - DO NOT EDIT % --- Executes just before gui_5 is made visible. function gui_5_OpeningFcn(hObject, eventdata, handles, varargin) % This function has no output args, see OutputFcn. % hObject handle to figure % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) % varargin command line arguments to gui_5 (see VARARGIN) % Choose default command line output for gui_5 handles.output = hObject; % Update handles structure guidata(hObject, handles); % UIWAIT makes gui_5 wait for user response (see UIRESUME) % uiwait(handles.figure1); % --- Outputs from this function are returned to the command line. function varargout = gui_5_OutputFcn(hObject, eventdata, handles) % varargout cell array for returning output args (see VARARGOUT); % hObject handle to figure % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) % Get default command line output from handles structure varargout{1} = handles.output; % --- Executes on button press in pushbutton5. function pushbutton5_Callback(hObject, eventdata, handles) % hObject handle to pushbutton5 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) close(gcf); % --- Executes on button press in pushbutton4. function pushbutton4_Callback(hObject, eventdata, handles) % hObject handle to pushbutton4 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) global Voicedata; global Fs; datapro=filter([1 -0.98],1,Voicedata);%预加重 p=14;%设定LPC预测器阶 al=lpc(datapro,p);%求LPC系数 freq1=(0:511)*Fs/512;%还原真实频率 pf=abs(fft(al.',512).').^(-2);%声道模型功率谱响应曲线 U=10*log10(pf);%求功率谱衰减 [pks,locs]=findpeaks(U);%寻找功率谱峰值点 delete(allchild(handles.axes8)); axes(handles.axes8); plot(freq1(1:256),U(1:256),'b')%蓝色线条绘图 hold on;grid on;%开启网格线 Ax=freq1(locs(1:0.5*length(locs)));%找到峰值对应的频率点 Bx=freq1(locs(1:0.5*length(locs))); Ay=zeros(1,length(Ax))-40;%划线起始点纵坐标 By=pks(1:0.5*length(locs));%划线终点纵坐标 X=[Ax;Bx];%标定划线起始点，终点横坐标集合 Y=[Ay;By];%标定划线起始点。终点纵坐标集合 line(X,Y,'linestyle',':','linewidth',1,'color','r')%划线 xlabel({'频率/Hz','电信1705 金锡斌 0121714680406'}); ylabel('衰减/dB'); title('LPC系数标定语音共振峰位置'); % --- Executes on button press in pushbutton1. function pushbutton1_Callback(hObject, eventdata, handles) % hObject handle to pushbutton1 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) global Fs; global Voicedata; Rp =1; Rs =40 ; %设置通带波纹小于3db ,阻带衰减为30db Wp =2 *[60 900]/Fs; %滤波器通带 Ws =2 *[40 2000]/Fs; %滤波器阻带 [n,Wn] = ellipord(Wp,Ws,Rp,Rs); [b,a] = ellip(n,Rp,Rs,Wn); [H w]=freqz(b,a,512); delete(allchild(handles.axes5)); axes(handles.axes5); plot(w*Fs/(2*pi),20*log10(abs(H)));grid on;hold on line([60,60],[-120,0],'linestyle',':','color','k'); line([900,900],[-120,0],'linestyle',':','color','k') xlabel({'频率/Hz','电信1705 金锡斌 0121714680406'}) ylabel('衰减/dB'); title('椭圆滤波器幅频响应曲线') dataOut = filter(b,a,Voicedata);%对采样后的语音数据序列进行滤波处理 handles.dataOut=dataOut; guidata(hObject, handles); delete(allchild(handles.axes6)); axes(handles.axes6); plot(Voicedata,'r');hold on; plot(dataOut,'b');legend('滤波前','滤波后');title(['滤波前后语音信号时域波形对比图 采样率-',num2str(Fs)]); xlabel({'样本点','电信1705 金锡斌 0121714680406'});ylabel('幅值'); % --- Executes on button press in pushbutton3. function pushbutton3_Callback(hObject, eventdata, handles) % hObject handle to pushbutton3 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) global Fs; u2=handles.xn_frames(:,handles.frame_num); max1=max(abs(u2(1:100))); max2=max(abs(u2(length(u2)-99:length(u2)))); cl=min(max1,max2)*0.68; for j=1:size(handles.xn_frames,1) %三电平削波处理 if u2(j)>cl; u2(j)=u2(j)-cl; three(j)=1; elseif u2(j)<-cl; u2(j)=u2(j)+cl; three(j)=-1; else u2(j)=0; three(j)=0; end end r=xcorr(three,u2,'coeff');%对三电平削波后的数据进行自相关计算 r=r(size(u2,1):end);%取适当范围内的延迟 k=max(r(50:end)); index=find(r==k); basic=Fs/index; set(handles.edit4,'String',basic); delete(allchild(handles.axes7)); axes(handles.axes7); plot(r);grid on; xlabel({'延时/k','电信1705 金锡斌 0121714680406'}); ylabel('幅值');title('三电平削波后自相关函数计算'); function edit4_Callback(hObject, eventdata, handles) % hObject handle to edit4 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) % Hints: get(hObject,'String') returns contents of edit4 as text % str2double(get(hObject,'String')) returns contents of edit4 as a double % --- Executes during object creation, after setting all properties. function edit4_CreateFcn(hObject, eventdata, handles) % hObject handle to edit4 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles empty - handles not created until after all CreateFcns called % Hint: edit controls usually have a white background on Windows. % See ISPC and COMPUTER. if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor')) set(hObject,'BackgroundColor','white'); end function edit1_Callback(hObject, eventdata, handles) % hObject handle to edit1 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) % Hints: get(hObject,'String') returns contents of edit1 as text % str2double(get(hObject,'String')) returns contents of edit1 as a double str1=get(handles.edit1,'string'); handles.frame_time=str2num(str1); guidata(hObject,handles); % --- Executes during object creation, after setting all properties. function edit1_CreateFcn(hObject, eventdata, handles) % hObject handle to edit1 (see GCBO) % eventdata reserved - to be defined in a futur