duandianjiance.zip_The First

function varargout = signal(varargin) % SIGNAL M-file for signal.fig % SIGNAL, by itself, creates a new SIGNAL or raises the existing % singleton*. % % H = SIGNAL returns the handle to a new SIGNAL or the handle to % the existing singleton*. % % SIGNAL('CALLBACK',hObject,eventData,handles,...) calls the local % function named CALLBACK in SIGNAL.M with the given input arguments. % % SIGNAL('Property','Value',...) creates a new SIGNAL or raises the % existing singleton*. Starting from the left, property value pairs are % applied to the GUI before signal_OpeningFunction gets called. An % unrecognized property name or invalid value makes property application % stop. All inputs are passed to signal_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 signal % Last Modified by GUIDE v2.5 11-May-2006 15:33:30 % Begin initialization code - DO NOT EDIT gui_Singleton = 1; gui_State = struct('gui_Name', mfilename, ... 'gui_Singleton', gui_Singleton, ... 'gui_OpeningFcn', @signal_OpeningFcn, ... 'gui_OutputFcn', @signal_OutputFcn, ... 'gui_LayoutFcn', [] , ... 'gui_Callback', []); if nargin & isstr(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 signal is made visible. function signal_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 signal (see VARARGIN) % Choose default command line output for signal handles.output = hObject; % Update handles structure guidata(hObject, handles); % UIWAIT makes signal wait for user response (see UIRESUME) % uiwait(handles.figure1); % --- Outputs from this function are returned to the command line. function varargout = signal_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 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) a=wavread('neng.wav'); figure(1); plot(a); % --- Executes on button press in pushbutton2. function pushbutton2_Callback(hObject, eventdata, handles) % hObject handle to pushbutton2 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) a=wavread('neng.wav'); n=length(a); N=320; figure(2); subplot(3,1,1),plot(a); h=linspace(1,1,N);%形成一个矩形窗，长度为N En=conv(h,a.*a);%求卷积得其短时能量函数En subplot(3,1,2),plot(En); b=[]; b(1)=0; for i=2:n if a(i)*a(i-1)>0 b(i)=0; else b(i)=1; end end w=[]; w(1:N-1)=0; for i=N:n w(i)=0; for j=i-N+1:i w(i)=w(i)+b(j); end w(i)=w(i)/N; end subplot(3,1,3),plot(w); % --- 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) a=wavread('neng.wav'); n=length(a); N=320; d=[]; for i=0:N-1 d(i+1)=0; for j=1000-N+1:1000-i d(i+1)=d(i+1)+a(j)*a(j+i); end end figure(3); plot(d);