HW1.4 Lu Zhang ECE301Summer2009 - Rhea

% 5x/6 = 440 x = 440*6/5; % solve for x

E = 5*x /8;  % Middle E G = 3*x /4;  % middle G C = x;  % middle C GL = 3*x/8;  % Lower G EL = 5*x/16;  % LOwer E AL = 5*x/12;  % lower A BL = 15*x/36; % lower B ALS = 233.08; % lower A#

del = 0.0001; % 12 notes , 2500 for each t = 0:del:3.5; % total length 35001

% time for Note E t1 = [ones(1,7500), zeros(1,5000),ones(1,2500),zeros(1,20001)]; % time for Note G t2 = [zeros(1,7500), ones(1,2500),zeros(1,5000),ones(1,2500),zeros(1,17501)]; % time for Note C t3 = [zeros(1,10000),ones(1,2500),zeros(1,5000),ones(1,2500),zeros(1,15001)]; % time for Note GL t4 = [zeros(1,20000),ones(1,2500),zeros(1,12501)]; % time for Note EL t5 = [zeros(1,22500),ones(1,2500),zeros(1,10001)]; % time for Note AL t6 = [zeros(1,25000),ones(1,2500),zeros(1,5000),ones(1,2501)]; % time for Note BL t7 = [zeros(1,27500),ones(1,2500),zeros(1,5001)]; % time for Note ALS t8 = [zeros(1,30000),ones(1,2500),zeros(1,2501)];

%play the song

y = sin(2*pi*E*t).*t1 +...
    sin(2*pi*G*t).*t2 +...
    sin(2*pi*C*t).*t3 +...
    sin(2*pi*GL*t).*t4 +...
    sin(2*pi*EL*t).*t5 +...
    sin(2*pi*AL*t).*t6 +...
    sin(2*pi*BL*t).*t7 +...
    sin(2*pi*ALS*t).*t8;

sound(y,1/del);