Midterm

This is the Demo video

Hope you like it!

the following words are the codes!

classdef app1 < matlab.apps.AppBase

% Properties that correspond to app components

properties (Access = public)

UIFigure matlab.ui.Figure

startButton matlab.ui.control.Button

stopButton matlab.ui.control.Button

fasterButton matlab.ui.control.Button

slowerButton matlab.ui.control.Button

reverseButton matlab.ui.control.Button

FourierButton matlab.ui.control.Button

louderButton matlab.ui.control.Button

quieterButton matlab.ui.control.Button

end

methods (Access = private)

% Button pushed function: startButton

function quieyerButtonPushed(app, event)

Fs1=44100;

fs=Fs1;

T=1/fs;

song = 'HI'

[y,fs] = audioread('signal.wav',[6500000 7800000]);

sound(y,fs);

time=(1:length(y))/fs;

plot(time, y);

grid("on");

xlabel('time');

ylabel('Magnitude');

title('Original waveform');

end

% Button pushed function: stopButton

function stopButtonPushed(app, event)

clear sound;

end

% Button pushed function: fasterButton

function fasterButtonPushed(app, event)

Fs1=44100;

fs=Fs1;

T=1/fs;

song = 'HI'

[y,fs] = audioread('signal.wav',[6500000 7800000]);

sound(y,2*fs);

time=(1:length(y))/(2*fs);

plot(time, y);

grid("on");

xlabel('time');

ylabel('Magnitude');

title('Speed up waveform');

end

% Button pushed function: slowerButton

function slowerButtonPushed(app, event)

Fs1=44100;

fs=Fs1;

T=1/fs;

song = 'HI'

[y,fs] = audioread('signal.wav',[6500000 7800000]);

sound(y,0.8*fs);

time=(1:length(y))/(0.5*fs);

plot(time, y);

grid("on");

xlabel('time');

ylabel('Magnitude');

title('speed down waveform');

end

% Button pushed function: reverseButton

function reverseButtonPushed(app, event)

Fs1=44100;

fs=Fs1;

T=1/fs;

song = 'HI'

[y,fs] = audioread('signal.wav',[6500000 7800000]);

sound(flipud(y),fs);

time=(1:length(y))/fs;

plot(time, y);

grid("on");

xlabel('time');

ylabel('Magnitude');

title('Reverse waveform');

end

% Button pushed function: FourierButton

function FourierButtonPushed(app, event)

fs=44100;

time = 248;

N = fs*time;

f=1/fs;

[y,fs] = audioread('signal.wav',[6500000 7800000]);

time2=(1:length(y))/fs;

FT=fft(y);

Y = abs(FT/time);

Y2 = Y(1:time/2+1);

Y2(2:end-1) = 2*Y2(2:end-1);

f2 = fs*(0:(time/2))/time;

plot(f2,Y2);

grid("on");

xlabel('Freq');

ylabel('Magnitude');

title('Fourier Transform of y');

end

% Button pushed function: quieterButton

function quieterButtonPushed(app, event)

Fs1=44100;

fs=Fs1;

T=1/fs;

song = 'HI'

[y,fs] = audioread('signal.wav',[6500000 7800000]);

sound(0.1*y,fs);

time=(1:length(0.1*y))/fs;

plot(time, y);

grid("on");

xlabel('time');

ylabel('Magnitude');

title('quieter waveform');

end

% Button pushed function: louderButton

function louderButtonPushed(app, event)

Fs1=44100;

fs=Fs1;

T=1/fs;

song = 'HI'

[y,fs] = audioread('signal.wav',[6500000 7800000]);

sound(5*y,fs);

time=(1:length(10*y))/fs;

plot(time, y);

grid("on");

xlabel('time');

ylabel('Magnitude');

title('louder waveform');

end

% App initialization and construction

methods (Access = private)

% Create UIFigure and components

function createComponents(app)

% Create UIFigure

app.UIFigure = uifigure;

app.UIFigure.Position = [100 100 640 480];

app.UIFigure.Name = 'UI Figure';

% Create startButton

app.startButton = uibutton(app.UIFigure, 'push');

app.startButton.ButtonPushedFcn = createCallbackFcn(app, @quieyerButtonPushed, true);

app.startButton.BackgroundColor = [0 1 0];

app.startButton.FontColor = [1 1 1];

app.startButton.Position = [57 310 128 50];

app.startButton.Text = 'start';

% Create stopButton

app.stopButton = uibutton(app.UIFigure, 'push');

app.stopButton.ButtonPushedFcn = createCallbackFcn(app, @stopButtonPushed, true);

app.stopButton.BackgroundColor = [1 0 0];

app.stopButton.FontColor = [1 1 1];

app.stopButton.Position = [57 206 128 46];

app.stopButton.Text = 'stop';

% Create fasterButton

app.fasterButton = uibutton(app.UIFigure, 'push');

app.fasterButton.ButtonPushedFcn = createCallbackFcn(app, @fasterButtonPushed, true);

app.fasterButton.BackgroundColor = [0 0 1];

app.fasterButton.FontColor = [1 1 1];

app.fasterButton.Position = [263 396 128 50];

app.fasterButton.Text = {'faster'; ''};

% Create slowerButton

app.slowerButton = uibutton(app.UIFigure, 'push');

app.slowerButton.ButtonPushedFcn = createCallbackFcn(app, @slowerButtonPushed, true);

app.slowerButton.BackgroundColor = [1 0.4118 0.1608];

app.slowerButton.FontColor = [1 1 1];

app.slowerButton.Position = [263 238 128 50];

app.slowerButton.Text = 'slower';

% Create reverseButton

app.reverseButton = uibutton(app.UIFigure, 'push');

app.reverseButton.ButtonPushedFcn = createCallbackFcn(app, @reverseButtonPushed, true);

app.reverseButton.BackgroundColor = [0.4902 0.1804 0.5608];

app.reverseButton.FontColor = [1 1 1];

app.reverseButton.Position = [263 326 128 50];

app.reverseButton.Text = {'reverse'; ''};

% Create FourierButton

app.FourierButton = uibutton(app.UIFigure, 'push');

app.FourierButton.ButtonPushedFcn = createCallbackFcn(app, @FourierButtonPushed, true);

app.FourierButton.BackgroundColor = [0.0588 1 1];

app.FourierButton.FontColor = [1 1 1];

app.FourierButton.Position = [474 251 128 50];

app.FourierButton.Text = {'Fourier'; ''};

% Create louderButton

app.louderButton = uibutton(app.UIFigure, 'push');

app.louderButton.ButtonPushedFcn = createCallbackFcn(app, @louderButtonPushed, true);

app.louderButton.BackgroundColor = [1 0 1];

app.louderButton.FontColor = [1 1 1];

app.louderButton.Position = [263 166 128 50];

app.louderButton.Text = 'louder';

% Create quieterButton

app.quieterButton = uibutton(app.UIFigure, 'push');

app.quieterButton.ButtonPushedFcn = createCallbackFcn(app, @quieterButtonPushed, true);

app.quieterButton.BackgroundColor = [0.502 0.502 0.502];

app.quieterButton.FontColor = [1 1 1];

app.quieterButton.Position = [263 91 128 50];

app.quieterButton.Text = 'quieter';

end

methods (Access = public)

% Construct app

function app = app1

% Create and configure components

createComponents(app)

% Register the app with App Designer

registerApp(app, app.UIFigure)

if nargout == 0

clear app

end

% Code that executes before app deletion

function delete(app)

% Delete UIFigure when app is deleted

delete(app.UIFigure)

end