数字信号基于matlab GUI数字电子琴【含Matlab源码 272期】.zip

function varargout = graph1(varargin) gui_Singleton = 1; gui_State = struct('gui_Name', mfilename, ... 'gui_Singleton', gui_Singleton, ... 'gui_OpeningFcn', @graph1_OpeningFcn, ... 'gui_OutputFcn', @graph1_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 function graph1_OpeningFcn(hObject, eventdata, handles, varargin) handles.output = hObject; guidata(hObject, handles); function varargout = graph1_OutputFcn(hObject, eventdata, handles) varargout{1} = handles.output; function playsound(soundtype, frequency, amp, phase) Fs=41000; x=[0:1/Fs:1]; switch soundtype case 1 %正弦波 y=amp*sin(2*pi*frequency*x+phase); case 2 %三角波 y=amp*sawtooth(2*pi*frequency*x+phase,0.5); case 3 %锯齿波 y=amp*sawtooth(2*pi*frequency*x+phase); case 4 %方波 y=amp*square(2*pi*frequency*x+phase); case 5 %白噪声 y=amp*(2*rand(size(x))-1); otherwise errordlg('Illegal wave type','Choose errer');%向界面发送错误的对话框 end plot(x,y);% 显示波形 axis([0,0.01,-200,200]); wavplay(y,Fs,'async');%播放声音，使用async(异步)模式可以实现发声的混迭 function frequency_Callback(hObject, eventdata, handles) handles.frequency=str2double(get(hObject,'String')); guiddata(hObject,handles); function frequency_CreateFcn(hObject, eventdata, handles) if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor')) set(hObject,'BackgroundColor','white'); end function amp_Callback(hObject, eventdata, handles) handles.ampe=str2double(get(hObject,'String')); guiddata(hObject,handles); function amp_CreateFcn(hObject, eventdata, handles) if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor')) set(hObject,'BackgroundColor','white'); end function phase_Callback(hObject, eventdata, handles) handles.phase=str2double(get(hObject,'String')); guiddata(hObject,handles); function phase_CreateFcn(hObject, eventdata, handles) if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor')) set(hObject,'BackgroundColor','white'); end % --- Executes on selection change in soundtype.这是下拉菜单 function soundtype_Callback(hObject, eventdata, handles) handles.soundtype=get(hObject,'Value'); guidata(hObject,handles); %以获得存储所需要的波形 % --- Executes during object creation, after setting all properties. function soundtype_CreateFcn(hObject, eventdata, handles) if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor')) set(hObject,'BackgroundColor','white'); end % --- Executes on button press in pushbuttonbroadcast. function pushbuttonbroadcast_Callback(hObject, eventdata, handles) playsound(handles.soundtype,handles.frequency,handles.amp,handles.phase); % --- Executes on button press in pushbuttondefault.初始化 function pushbuttondefault_Callback(hObject, eventdata, handles) set(handles.soundtype,'Value',1); set(handles.frequency,'String','300'); set(handles.amp,'String','180'); set(handles.phase,'String','0'); handles.soundtype=1; handles.frequency=300; handles.amp=180; handles.phase=0; guidata(hObject,handles); % --- Executes on button press in pushbuttonA. function pushbuttonA_Callback(hObject, eventdata, handles) playsound(handles.soundtype,261.63,handles.amp,handles.phase); function pushbuttonB_Callback(hObject, eventdata, handles) playsound(handles.soundtype,293.66,handles.amp,handles.phase); function pushbuttonC_Callback(hObject, eventdata, handles) playsound(handles.soundtype,329.63,handles.amp,handles.phase); function pushbuttonD_Callback(hObject, eventdata, handles) playsound(handles.soundtype,349.23,handles.amp,handles.phase); function pushbuttonE_Callback(hObject, eventdata, handles) playsound(handles.soundtype,392.00,handles.amp,handles.phase); function pushbuttonF_Callback(hObject, eventdata, handles) playsound(handles.soundtype,440.00,handles.amp,handles.phase); function pushbuttonG_Callback(hObject, eventdata, handles) playsound(handles.soundtype,493.88,handles.amp,handles.phase); function pushbuttonH_Callback(hObject, eventdata, handles) playsound(handles.soundtype,131,handles.amp,handles.phase); function pushbuttonI_Callback(hObject, eventdata, handles) playsound(handles.soundtype,150,handles.amp,handles.phase); function pushbuttonJ_Callback(hObject, eventdata, handles) playsound(handles.soundtype,180,handles.amp,handles.phase); function pushbuttonK_Callback(hObject, eventdata, handles) playsound(handles.soundtype,190,handles.amp,handles.phase); function pushbuttonN_Callback(hObject, eventdata, handles) playsound(handles.soundtype,200,handles.amp,handles.phase); function pushbuttonO_Callback(hObject, eventdata, handles) playsound(handles.soundtype,210,handles.amp,handles.phase); function pushbuttonL_Callback(hObject, eventdata, handles) playsound(handles.soundtype,220,handles.amp,handles.phase); function pushbuttonM_Callback(hObject, eventdata, handles) playsound(handles.soundtype,230,handles.amp,handles.phase); % --- Executes on mouse press over axes background. function axes1_ButtonDownFcn(hObject, eventdata, handles) function axes1_CreateFcn(hObject, eventdata, handles)