Signal and System
Midterm project
Every frequency of note
Enter the notes to every parts,then use x to make the cosine wave. Then use reshape function to transform x to sig. Finally, play the music with different frequency.
Main Function
function varargout = untitled(varargin)
% UNTITLED MATLAB code for untitled.fig
% UNTITLED, by itself, creates a new UNTITLED or raises the existing
% singleton*.
%
% H = UNTITLED returns the handle to a new UNTITLED or the handle to
% the existing singleton*.
%
% UNTITLED('CALLBACK',hObject,eventData,handles,...) calls the local
% function named CALLBACK in UNTITLED.M with the given input arguments.
%
% UNTITLED('Property','Value',...) creates a new UNTITLED or raises the
% existing singleton*. Starting from the left, property value pairs are
% applied to the GUI before untitled_OpeningFcn gets called. An
% unrecognized property name or invalid value makes property application
% stop. All inputs are passed to untitled_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 untitled
% Last Modified by GUIDE v2.5 10-May-2019 19:07:46
% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name', mfilename, ...
'gui_Singleton', gui_Singleton, ...
'gui_OpeningFcn', @untitled_OpeningFcn, ...
'gui_OutputFcn', @untitled_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 untitled is made visible.
function untitled_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 untitled (see VARARGIN)
[y,Fs] = audioread('copy.wav');
handles.Y = y;
guidata(hObject , handles);
handles.Fs = Fs;
guidata(hObject , handles);
handles.Player = audioplayer(y,Fs);
guidata(hObject , handles);
xlabel(handles.axes1, 'Time');
ylabel(handles.axes1, 'Magnitude');
title(handles.axes1,'Original Waveform');
xlabel(handles.axes2, 'Time');
ylabel(handles.axes2, 'Magnitude');
title(handles.axes2,'Fourier Transform of music');
% Choose default command line output for untitled
handles.output = hObject;
% Update handles structure
guidata(hObject, handles);
% UIWAIT makes untitled wait for user response (see UIRESUME)
% uiwait(handles.figure1);
% --- Outputs from this function are returned to the command line.
function varargout = untitled_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;
% 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)
[y , Fs] = audioread('copy.wav');
handles.Y = y;
guidata(hObject , handles);
handles.Fs = Fs;
guidata(hObject , handles);
handles.Player = audioplayer(y,Fs);
guidata(hObject , handles);
player = handles.Player;
a = handles.Y;
b = handles.Fs;
time = (1:length(a))/b;
plot(handles.axes1, time, a);
grid on;
xlabel(handles.axes1, 'Time');
ylabel(handles.axes1, 'Magnitude');
title(handles.axes1,'Original Waveform');
play(player);
t = clock;
handles.t = t;
guidata(hObject , handles);
time = 248;
FT = fft(a);
a =abs(FT/time);
y2 = a(1:time/2+1);
y2(2:end-1) = 2*y2(2:end-1);
f2 = Fs*(0:(time/2))/time;
plot(handles.axes2, f2 , y2);
xlabel(handles.axes2, 'Time');
ylabel(handles.axes2, 'Magnitude');
title(handles.axes2,'Fourier Transform of music');
% --- 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)
player = handles.Player;
plot(handles.axes1, 0,0);
grid on;
xlabel(handles.axes1, 'Time');
ylabel(handles.axes1, 'Magnitude');
title(handles.axes1,'Original Waveform');
plot(handles.axes2, 0,0);
xlabel(handles.axes2, 'Time');
ylabel(handles.axes2, 'Magnitude');
title(handles.axes2,'Fourier Transform of music');
stop(player);
% --- 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)
a = handles.Y;
b = handles.Fs*3;
handles.Fs = b;
guidata(hObject , handles);
player = audioplayer(a,b);
handles.Player = player;
guidata(hObject , handles);
time = (1:length(a))/b;
plot(handles.axes1, time, a);
grid on;
xlabel(handles.axes1, 'Time');
ylabel(handles.axes1, 'Magnitude');
title(handles.axes1,'Original Waveform');
play(player);
t = clock;
handles.t = t;
guidata(hObject , handles);
time = 248;
FT = fft(a);
a =abs(FT/time);
y2 = a(1:time/2+1);
y2(2:end-1) = 2*y2(2:end-1);
f2 = b*(0:(time/2))/time;
plot(handles.axes2, f2 , y2);
xlabel(handles.axes2, 'Time');
ylabel(handles.axes2, 'Magnitude');
title(handles.axes2,'Fourier Transform of music');
% --- Executes on button press in pushbutton6.
function pushbutton6_Callback(hObject, eventdata, handles)
% hObject handle to pushbutton6 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
a = handles.Y;
b = handles.Fs*0.8;
handles.Fs = b;
guidata(hObject , handles);
player = audioplayer(a,b);
handles.Player = player;
guidata(hObject , handles);
time = (1:length(a))/b;
plot(handles.axes1, time, a);
grid on;
xlabel(handles.axes1, 'Time');
ylabel(handles.axes1, 'Magnitude');
title(handles.axes1,'Original Waveform');
play(player);
t = clock;
handles.t = t;
guidata(hObject , handles);
time = 248;
FT = fft(a);
a =abs(FT/time);
y2 = a(1:time/2+1);
y2(2:end-1) = 2*y2(2:end-1);
f2 = b*(0:(time/2))/time;
plot(handles.axes2, f2 , y2);
xlabel(handles.axes2, 'Time');
ylabel(handles.axes2, 'Magnitude');
title(handles.axes2,'Fourier Transform of music');
% --- Executes on button press in pushbutton7.
function pushbutton7_Callback(hObject, eventdata, handles)
% hObject handle to pushbutton7 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
a = 2*handles.Y;
b = handles.Fs;
handles.Fs = b;
guidata(hObject , handles);
player = audioplayer(a,b);
handles.Player = player;
guidata(hObject , handles);
time = (1:length(a))/b;
plot(handles.axes1, time, a);
grid on;
xlabel(handles.axes1, 'Time');
ylabel(handles.axes1, 'Magnitude');
title(handles.axes1,'Original Waveform');
play(player);
t = clock;
handles.t = t;
guidata(hObject , handles);
time = 248;
FT = fft(a);
a =abs(FT/time);
y2 = a(1:time/2+1);
y2(2:end-1) = 2*y2(2:end-1);
f2 = b*(0:(time/2))/time;
plot(handles.axes2, f2 , y2);
xlabel(handles.axes2, 'Time');
ylabel(handles.axes2, 'Magnitude');
title(handles.axes2,'Fourier Transform of music');
% --- 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)
a = 0.5*handles.Y;
b = handles.Fs;
handles.Fs = b;
guidata(hObject , handles);
player = audioplayer(a,b);
handles.Player = player;
guidata(hObject , handles);
time = (1:length(a))/b;
plot(handles.axes1, time, a);
grid on;
xlabel(handles.axes1, 'Time');
ylabel(handles.axes1, 'Magnitude');
title(handles.axes1,'Original Waveform');
play(player);
t = clock;
handles.t = t;
guidata(hObject , handles);
time = 248;
FT = fft(a);
a =abs(FT/time);
y2 = a(1:time/2+1);
y2(2:end-1) = 2*y2(2:end-1);
f2 = b*(0:(time/2))/time;
plot(handles.axes2, f2 , y2);
xlabel(handles.axes2, 'Time');
ylabel(handles.axes2, 'Magnitude');
title(handles.axes2,'Fourier Transform of music');