matlab音频处理

function varargout = xiongbawuxia(varargin) % XIONGBAWUXIA MATLAB code for xiongbawuxia.fig % XIONGBAWUXIA, by itself, creates a new XIONGBAWUXIA or raises the existing % singleton*. % % H = XIONGBAWUXIA returns the handle to a new XIONGBAWUXIA or the handle to % the existing singleton*. % % XIONGBAWUXIA('CALLBACK',hObject,eventData,handles,...) calls the local % function named CALLBACK in XIONGBAWUXIA.M with the given input arguments. % % XIONGBAWUXIA('Property','Value',...) creates a new XIONGBAWUXIA or raises the % existing singleton*. Starting from the left, property value pairs are % applied to the GUI before xiongbawuxia_OpeningFcn gets called. An % unrecognized property name or invalid value makes property application % stop. All inputs are passed to xiongbawuxia_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 xiongbawuxia % Last Modified by GUIDE v2.5 28-Oct-2016 21:08:47 % Begin initialization code - DO NOT EDIT gui_Singleton = 1; gui_State = struct('gui_Name', mfilename, ... 'gui_Singleton', gui_Singleton, ... 'gui_OpeningFcn', @xiongbawuxia_OpeningFcn, ... 'gui_OutputFcn', @xiongbawuxia_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 xiongbawuxia is made visible. function xiongbawuxia_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 xiongbawuxia (see VARARGIN) % Choose default command line output for xiongbawuxia handles.output = hObject; % Update handles structure guidata(hObject, handles); % UIWAIT makes xiongbawuxia wait for user response (see UIRESUME) % uiwait(handles.figure1); % --- Outputs from this function are returned to the command line. function varargout = xiongbawuxia_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) % --- 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) % --- 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 y fs n t f Y; [y,fs]=audioread('1.wma'); y=y(:,2); p = audioplayer(y,fs); play(p); pause(5); n=length(y); t=(0:n-1)/fs; axes(handles.axes1); plot(t,y); title('原始语音信号采样后的波形图'); f=fs*(0:n/2-1)/n; Y=fft(y,n); axes(handles.axes2); plot(f,abs(Y(1:n/2)));; title('原始语音信号采样后的频谱图'); % --- Executes on button press in pushbutton8. function pushbutton8_Callback(hObject, eventdata, handles) % hObject handle to pushbutton8 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) % --- Executes on button press in pushbutton9. function pushbutton9_Callback(hObject, eventdata, handles) % hObject handle to pushbutton9 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) global y fs n t f d; Au=0.1; d=[Au*cos(2*pi*4000*t)]'; z=fft(d,n); axes(handles.axes1); plot(f,abs(z(1:n/2))); title('高频噪音的频谱图'); % --- Executes on button press in pushbutton10. function pushbutton10_Callback(hObject, eventdata, handles) % hObject handle to pushbutton10 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) global y fs n f d r t v ; r=y+d; u=audioplayer(r,fs); play(u); pause(5); t=(0:length(r)-1)/fs; axes(handles.axes1); plot(t,r); set(gca,'ylim',[-1 1]); title('信号加高噪波形图'); % t=(0:n-1)/fs; % axes(handles.axes2); % plot(t,y); % title('原始语音信号采样后的波形图'); % set(gca,'ylim',[-1.5 1.5]) % set(gca,'xlim',[0 30]) v=fft(r,n); axes(handles.axes2); plot(f,abs(v(1:n/2))); title('信号加高噪频谱图'); % --- Executes on button press in pushbutton11. function pushbutton11_Callback(hObject, eventdata, handles) % hObject handle to pushbutton11 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) global fs b a M=11; b=ones(M,1)/M; a=1; [q,w]=freqz(b,a,'whole'); p=(abs(q)); f1=w*fs/(2*pi); axes(handles.axes1); plot(f1,p); set(gca,'xlim',[0 fs/2]); title('滤波器幅度频谱图'); c=angle(q); axes(handles.axes2); plot(f1,c); set(gca,'xlim',[0 fs/2]); title('滤波器相位频谱图'); % --- Executes on button press in pushbutton12. function pushbutton12_Callback(hObject, eventdata, handles) % hObject handle to pushbutton12 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) global fs b a r t f n u e e=filter(b,a,r); c=audioplayer(e,fs); play(c); pause(5); axes(handles.axes1); plot(t,e); set(gca,'ylim',[-1 1]); title('滤波后的波形图'); u=fft(e,n); axes(handles.axes2); plot(f,abs(u(1:n/2))); title('滤波后的频谱图'); % --- Executes on button press in pushbutton13. function pushbutton13_Callback(hObject, eventdata, handles) % hObject handle to pushbutton13 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) global r t e ; axes(handles.axes1); plot(t,r); set(gca,'ylim',[-1 1]); title('信号加高噪波形图'); axes(handles.axes2); plot(t,e); set(gca,'ylim',[-1 1]); title('滤波后的波形图'); % --- Executes on button press in pushbutton14. function pushbutton14_Callback(hObject, eventdata, handles) % hObject handle to pushbutton14 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) global n f v u; axes(handles.axes1); plot(f,abs(v(1:n/2))); title('信号加高噪频谱图'); axes(handles.axes2); plot(f,abs(u(1:n/2))); title('滤波后的频谱图'); % --- Executes on button press in pushbutton15. function pushbutton15_Callback(hObject, eventdata, handles) % hObject handle to pushbutton15 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) global d1 n f t Y; axes(handles.axes1); plot(f