Signals and systems
410287045 黃浩睿
MUSIC
This is the frequency of every notes
CODE
A=[130 146 164 174 196 112 120 103];
A=[260 293 328 348 392 224 240 206]
fs=8000;
pu=[3 3 4 4 3 2 3 3 3 4 4 3 2 3 3 3 4 5 1 7 1 2 1 2 3 4 3 2 1 6 6 5 5 4 3 4 8 8 5 4 3 2 3 6 6 2 2 3 3 4 8 2 3 4 3 2 1 3 3 4 4 3 2 3 3 3 4 4 3 2 3 3 3 4 5 1 7 1 2 1 2 3 4 3 2 1 6 6 5 5 4 3 4 8 8 5 4 3 2 3 6 6 2 2 3 3 4 8 2 3 4 3 2 1]; %the music
p=0.9;
last_time=[p/2 p/2 p/2 p/2 p/2 p/2 p p/2 p/2 p/2 p/2 p/2 p/2 p p/2 p/2 p/2 p/2 p/2 p/2 p/2 p/2 p/2 p/2 p/2 p/2 p/2 p/2 p p/2 p/2 p/2 p/2 p/2 p/2 p p/2 p/2 p/2 p/2 p/2 p/2 p p/2 p/2 p/2 p/2 p/2 p/2 p p/2 p/2 p/2 p/2 p/2 p/2 p p/2 p/2 p/2 p/2 p/2 p/2 p p/2 p/2 p/2 p/2 p/2 p/2 p p/2 p/2 p/2 p/2 p/2 p/2 p/2 p/2 p/2 p/2 p/2 p/2 p/2 p/2 p p/2 p/2 p/2 p/2 p/2 p/2 p p/2 p/2 p/2 p/2 p/2 p/2 p p/2 p/2 p/2 p/2 p/2 p/2 p p/2 p/2 p/2 p/2 p/2 1.5*p 1.5*p];
N=length(pu);% the quantity of music
f=zeros(1,N);
for i=1:N
f(i)=A(pu(i));
end
point=fs*last_time;
total_point=sum(point);
store=zeros(1,total_point);
m=1;
for num=1:N
t=1/fs:1/fs:point(num)/fs;
store(m:m+point(num)-1)=sin(2*pi*f(num)*t);
m=m+point(num);
end
sound(store,8000);
plot(store);