MatLabPiano

%Author: Alex Dytso
%Description: This is a simple code that generates music by pressing keys.
%The code uses a special function  that avoids pressing enter after each key
% 

function MatLabPiano

A=440;%press A
B=493.9;% press J
C=162.6; %press S
D=293.7; %press D
E=329.6; %press K
F=349.2; %press F
G=392.0; %press G

Fs=8000;

t=0:2.1/(Fs):1;

yA=cos(A*pi*t);
yB=cos(B*pi*t);
yC=cos(C*pi*t);
yD=cos(D*pi*t);
yE=cos(E*pi*t);
yF=cos(F*pi*t);
yG=cos(G*pi*t);

i=0;

while i<2 % infinit loop

K=getkey(1);

if K==97 % letter A was pressed corresponding to note A
    sound(yA,Fs)
else  
if K==106 % letter J was pressed correspondin to note B
   sound(yB,Fs);

elseif K==115 % letter S was pressed corresponding to note C
sound(yC,Fs);


elseif K==100 % letter D was pressed correspondin to note D
   sound(yD,Fs);

elseif K==107 % letter K was pressed correspondin to note E
   sound(yE,Fs);
   
elseif K==102 % letter F was pressed correspondin to note F
   sound(yF,Fs);

elseif K==103 % letter G was pressed correspondin to note G
   sound(yG,Fs);
   
elseif K==113 % letter Q is pressed. Q is used to quite
    
break;


end
end

end



end








%using modified version getkey function written by Jos
function ch = getkey(N,nonascii)


nonascii = '' ;
N = 1 ;
    
callstr = 'set(gcbf,''Userdata'',double(get(gcbf,''Currentcharacter''))) ; uiresume ' ;
% Set up the figure
% May be the position property  should be individually tweaked to avoid
% visibility

fh = figure(...
    'keypressfcn',callstr, ...
    'windowstyle','modal') ;

    ch = cell(1,1) ;
    
 
     
        % Wait for something to happen, usually a key press so uiresume is
        % executed
        uiwait ;
        
        ch{1} = get(fh,'Userdata') ;  % and the key itself
        
   
        
            ch = ch{1} ; % return as a string
       
        % return as a cell array of strings
    
 


% clean up the figure, if it still exists

   close(fh) ;

end