code:

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 17-May-2018 11:47:35

% 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)

% 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;

% --- Executes on button press in PLAY.

function PLAY_Callback(hObject, eventdata, handles)

% hObject handle to PLAY (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('MARIO.wav');

subplot(2,1,2), plot(y);

x = abs(fft(y));

subplot(2,1,1),plot(x);

sound(y, fs);

% --- Executes on button press in STOP.

function STOP_Callback(hObject, eventdata, handles)

% hObject handle to STOP (see GCBO)

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

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

clear sound;

% --- 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)

[y, fs]=audioread('MARIO.wav');

subplot(2,1,2), plot(5*y);

sound(5*y, fs);

% --- Executes on button press in pushbutton4.

function pushbutton4_Callback(hObject, eventdata, handles)

% hObject handle to pushbutton4 (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('MARIO.wav');

Y = abs(fft(y));

subplot(2,1,1),plot(Y);

subplot(2,1,2), plot(y);

% --- 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)

[y, fs]=audioread('MARIO.wav');

subplot(2,1,2), plot(3*y);

sound(3*y, fs);

% --- 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)

[y, fs]=audioread('MARIO.wav');

subplot(2,1,2), plot(y);

sound(y, 1.5*fs);

% --- 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)

[y, fs]=audioread('MARIO.wav');

subplot(2,1,2), plot(y);

sound(y, 2.0*fs);

% --- 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)

[y, fs]=audioread('MARIO.wav');

subplot(2,1,2), plot(y);

sound(y, 0.5*fs);

% --- 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)

[y, fs]=audioread('MARIO.wav');

x = abs(fft(y));

sound(flipud(y), fs);

% --- 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)

cutoffFreq = 1000;

n=5;

[Y,fs]=audioread('MARIO.wav');

[b,a]=butter(n,cutoffFreq/(fs/2), 'high');

y=filter(b,a,Y);

x = abs(fft(y));

subplot(2,1,1),plot(x);

subplot(2,1,2), plot(y);

sound(y,fs);

% --- 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)

cutoffFreq = 500;

n=5;

[Y,fs]=audioread('MARIO.wav');

[b,a]=butter(n,cutoffFreq/(fs/2), 'low');

y=filter(b,a,Y);

x = abs(fft(y));

subplot(2,1,1),plot(x);

subplot(2,1,2), plot(y);

sound(y,fs);

gui: