HW1.1 Sangwan Han ECE301Fall2008mboutin - Rhea

matlab code

% Sangwan Han
% HW1.1
clear;
clc;

delta=0.00005;
%define speed of song
ts=20;
%define note frequency
ue = 660;
ud = 594;
uc = 528;
b = 495;
a = 440;
g = 396;
f = 352;
e = 330;
d = 297;
mc = 264;


%note for hail purdue 
tls= [e f g a g a g a g a ...
         b a e f g g g a a b a b a b a b uc b e ud uc uc e f g a  ...
         g a g a g a ue uc b a ud ud a a b b b uc ud   ...
         ue uc b a uc b b b e f g a b uc b ud ud ud a b b uc uc] ;

%duration
tls_dur =  [ts ts ts ts ts ts ts*0.75 ts*0.75 ts*0.75 ts*0.75 ...
                 ts ts ts ts ts*2 ts*1.5 ts ts ts ts ts ts ts*0.75 ts*0.75 ts*0.75 ts*0.75 ts ts ts ts ts*2 ts*1.5 ts ts ts ts ...
                  ts ts ts*0.75 ts*0.75 ts*0.75 ts*0.75 ts ts ts ts ts ts*2 ts*0.75 ts*0.75 ts*1.5 ts*0.75 ts*2 ts*0.75 ts*1.5 ...
                 ts ts*0.75 ts*0.75 ts*0.75 ts*0.75 ts*2 ts*2 ts*2 ts*2 ts*2 ts*1.5 ts*1.5 ts*1.5 ts*1.5 ts*1.5 ts*1.5 ts ts ts ts ts ts ts*2]; 
                 
                
%normal speed
for all= 1:78       %total number of notes          
    t=0:delta:tls_dur(all);   
    song=sin(2*pi*t*tls(all));  
    sound(song,1/delta);  
end

pause(2)

%twice faster speed
for all= 1:78                 
    t=0:delta:tls_dur(all)*0.5;   %it makes faster *0.5
    song=sin(2*pi*t*tls(all));  
    sound(song,1/delta);  
end

pause(2)

%rescale
for all= 1:78                 
    t=0:delta:tls_dur(all)*0.5;   
    song=sin(2*2*pi*t*tls(all));  %rescale *2
    sound(song,1/delta);  
end