HW1.1 Tyler Johnson ECE301Fall2008mboutin - Rhea

Media:FastFightSong_ECE301Fall2008mboutin.wav

Media:FightSong_ECE301Fall2008mboutin.wav

Media:RescaledFightSong_ECE301Fall2008mboutin.wav

%Tyler Johnson
%September 3rd, 2008
%clear memory
clear;
%clear console
clc;

%Frequencies for each note
%using the frequencies from the homework page, the A note will have a frequency of 440 Hz
%some of the frequencies given were way off so I used integer values that I
%got from the internet at http://www.phy.mtu.edu/~suits/notefreqs.html

x = 264;  

UC = 2*x          %523
B  =(15*x)/8      %493
A  =415           %415
G  =(3*x)/2       %392
F  =(4*x)/3       %349
E  =311           %311
D  =(17*x)/8      %554
MC =x 

%Length of note
delta = .00005;
EI = .125; %Eigth Note
Q = .25; %Quarter Note
H = .5; %Half Note
T = .75; %Three Quarters Note
W = 1; %Whole Note

%Song verticies
%Song plays "Hail Hail to old Purdue! All hail to our old gold and black"

Notes = [E, F, G, A, B, UC, UC, D, D, D, A, B, B, UC];

Lengths = [H, Q, Q, Q+EI, EI, Q, Q, Q, EI, EI, Q, EI, EI, H+Q];

FightSong = [];
for counter = 1:14
    t=0:delta:Lengths(counter);
    d=sin(2*pi*t*Notes(counter));
    sound(d,1/delta);
    FightSong=[FightSong, d];
end
%Save a wav file:
wavwrite(FightSong,20000,32,'N:\ECE301\Homework 1\FightSong.wav');


pause(2);
%Play twice as fast

FastFightSong = [];
for counter = 1:14
    t=0:delta:Lengths(counter)/2;
    d=sin(2*pi*t*Notes(counter));
    sound(d,1/delta);
    FastFightSong=[FastFightSong, d];
end
wavwrite(FastFightSong,20000,16,'N:\ECE301\Homework 1\FastFightSong.wav');

pause(2);
%Rescaled

RescaledFightSong = [];
for counter = 1:14
    t=0:delta:Lengths(counter);
    d=sin(2*pi*(t*2)*Notes(counter));
    sound(d,1/delta);
    RescaledFightSong=[RescaledFightSong, d];
end
wavwrite(RescaledFightSong,20000,16,'N:\ECE301\Homework 1\RescaledFightSong.wav');