CODE

function varargout = midterm(varargin)

% MIDTERM MATLAB code for midterm.fig

% MIDTERM, by itself, creates a new MIDTERM or raises the existing

% singleton*.

%

% H = MIDTERM returns the handle to a new MIDTERM or the handle to

% the existing singleton*.

%

% MIDTERM('CALLBACK',hObject,eventData,handles,...) calls the local

% function named CALLBACK in MIDTERM.M with the given input arguments.

%

% MIDTERM('Property','Value',...) creates a new MIDTERM or raises the

% existing singleton*. Starting from the left, property value pairs are

% applied to the GUI before midterm_OpeningFcn gets called. An

% unrecognized property name or invalid value makes property application

% stop. All inputs are passed to midterm_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 midterm

% Last Modified by GUIDE v2.5 07-May-2019 00:45:22

% Begin initialization code - DO NOT EDIT

gui_Singleton = 1;

gui_State = struct('gui_Name', mfilename, ...

'gui_Singleton', gui_Singleton, ...

'gui_OpeningFcn', @midterm_OpeningFcn, ...

'gui_OutputFcn', @midterm_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 midterm is made visible.

function midterm_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 midterm (see VARARGIN)

% Choose default command line output for midterm

handles.output = hObject;

% Update handles structure

guidata(hObject, handles);

a=get(handles.slider1,'Value');

set(handles.text5,'String',num2str(a));

handles.a=a;

guidata(hObject,handles);

b=get(handles.slider2,'Value');

set(handles.text7,'String',num2str(b));

handles.b=b;

guidata(hObject,handles);

% UIWAIT makes midterm wait for user response (see UIRESUME)

% uiwait(handles.figure1);

% --- Outputs from this function are returned to the command line.

function varargout = midterm_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 togglebutton1.

function togglebutton1_Callback(hObject, eventdata, handles)

% hObject handle to togglebutton1 (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

a=get(hObject,'Value');

if a==get(hObject,'Max')

set(hObject,'String','STOP');

[y, fs]=audioread('我們不一樣.mp3');

volume=(handles.b)*y;

freq=(handles.a)*fs;

sound(volume, freq); % 播放此音訊

time=(1:length(y))/freq; % 時間軸的向量

plot(handles.axes1,time, volume);

xlabel(handles.axes1,'Time(sec)');

ylabel(handles.axes1,'Amp');

yfft=length((handles.b)*y);

yfft2=2^nextpow2(yfft);

f=fft((handles.b)*y,yfft2);

plot(handles.axes2,abs(f),'r');

xlabel(handles.axes2,'Frequency(HZ)');

ylabel(handles.axes2,'Amp');

else

set(hObject,'String','PLAY');

clear sound;

end

% Hint: get(hObject,'Value') returns toggle state of togglebutton1

% --- Executes on slider movement.

function slider1_Callback(hObject, eventdata, handles)

% hObject handle to slider1 (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)set(handles.slider1,'Value',1);

a=get(handles.slider1,'Value');

set(handles.text5,'String',num2str(a));

handles.a=a;

guidata(hObject,handles);

% Hints: get(hObject,'Value') returns position of slider

% get(hObject,'Min') and get(hObject,'Max') to determine range of slider

% --- Executes during object creation, after setting all properties.

function slider1_CreateFcn(hObject, eventdata, handles)

% hObject handle to slider1 (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles empty - handles not created until after all CreateFcns called

% Hint: slider controls usually have a light gray background.

if isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))

set(hObject,'BackgroundColor',[.9 .9 .9]);

end

% --- Executes on slider movement.

function slider2_Callback(hObject, eventdata, handles)

% hObject handle to slider2 (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

b=get(handles.slider2,'Value');

set(handles.text7,'String',num2str(b));

handles.b=b;

guidata(hObject,handles);

% Hints: get(hObject,'Value') returns position of slider

% get(hObject,'Min') and get(hObject,'Max') to determine range of slider

% --- Executes during object creation, after setting all properties.

function slider2_CreateFcn(hObject, eventdata, handles)

% hObject handle to slider2 (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles empty - handles not created until after all CreateFcns called

% Hint: slider controls usually have a light gray background.

if isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))

set(hObject,'BackgroundColor',[.9 .9 .9]);

end

% --- If Enable == 'on', executes on mouse press in 5 pixel border.

% --- Otherwise, executes on mouse press in 5 pixel border or over slider1.

function slider1_ButtonDownFcn(hObject, eventdata, handles)

% hObject handle to slider1 (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)