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| + | =[[Homework_1_ECE301Fall2008mboutin|HW1]], [[ECE301]], Prof. [[user:mboutin|Boutin]]= | ||
| + | In this homework assignment, we were asked to write a Matlab code to play the "Hail Purdue" song with different speeds and pitch. Here are my results: | ||
| + | ---- | ||
== Sound Files == | == Sound Files == | ||
| − | *[[Media:HW1.1_ECE301Fall2008mboutin.wav|Hail Purdue]] at normal speed using | + | *[[Media:HW1.1_ECE301Fall2008mboutin.wav|Hail Purdue]] at normal speed using wavwrite command |
*[[Media:hw1faster_ECE301Fall2008mboutin.wav|Hail Purdue]] at double speed | *[[Media:hw1faster_ECE301Fall2008mboutin.wav|Hail Purdue]] at double speed | ||
*[[Media:hw1frequency_ECE301Fall2008mboutin.wav|Hail Purdue]] at twice the frequency | *[[Media:hw1frequency_ECE301Fall2008mboutin.wav|Hail Purdue]] at twice the frequency | ||
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% Scott Erdbruegger | % Scott Erdbruegger | ||
% Homework 1.1 | % Homework 1.1 | ||
| − | % Note this Code takes a while to run due to the number of calculations(5000*28) | + | % Note this Code takes a while to run due to the number of calculations(5000*28) but can be done through software remote |
format compact | format compact | ||
clc | clc | ||
| Line 16: | Line 19: | ||
C=261.626;A=5*C/3;B=15*C/8;D=9*C/8;E=5*C/4;F=4*C/3;G=3*C/2; | C=261.626;A=5*C/3;B=15*C/8;D=9*C/8;E=5*C/4;F=4*C/3;G=3*C/2; | ||
notes=[E,F,G,A,B,C*2,C*2,D*2,D*2,D*2,A,B,B,C*2,C*2,C*2,B,A,B,C*2,C*2,B,F,G,A,G,F,B]; | notes=[E,F,G,A,B,C*2,C*2,D*2,D*2,D*2,A,B,B,C*2,C*2,C*2,B,A,B,C*2,C*2,B,F,G,A,G,F,B]; | ||
| − | Lengthofnote=.25;%Note Each syllable has one note | + | Lengthofnote=.25;%Note Each syllable has one note aproximently .25 of a second long |
numnotes=28; | numnotes=28; | ||
t=0; | t=0; | ||
Latest revision as of 09:08, 27 August 2010
HW1, ECE301, Prof. Boutin
In this homework assignment, we were asked to write a Matlab code to play the "Hail Purdue" song with different speeds and pitch. Here are my results:
Sound Files
- Hail Purdue at normal speed using wavwrite command
- Hail Purdue at double speed
- Hail Purdue at twice the frequency
MATLAB Code
% Scott Erdbruegger
% Homework 1.1
% Note this Code takes a while to run due to the number of calculations(5000*28) but can be done through software remote
format compact
clc
clear
delta = .00005;
i=1;
C=261.626;A=5*C/3;B=15*C/8;D=9*C/8;E=5*C/4;F=4*C/3;G=3*C/2;
notes=[E,F,G,A,B,C*2,C*2,D*2,D*2,D*2,A,B,B,C*2,C*2,C*2,B,A,B,C*2,C*2,B,F,G,A,G,F,B];
Lengthofnote=.25;%Note Each syllable has one note aproximently .25 of a second long
numnotes=28;
t=0;
while t<numnotes*Lengthofnote-.05
if(mod(i,5000)==0)
x(i)=0;z(i)=0;t
else
x(i)=sin(2*pi*notes(ceil(i/5000))*t);%normal
z(i)=sin(2*pi*2*notes(ceil(i/5000))*t);%twice frequency
end
t=t+delta;i=i+1;
end
t=0;i=1;
while t<numnotes*Lengthofnote/2-.05
if(mod(i,2500/2)==0)
y(i)=0;t
else
y(i)=sin(2*pi*notes(ceil(i/2500))*t);%twice as fast
end
t=t+delta;i=i+1;
end
wavwrite(x,'hw1normal.wav');
wavwrite(y,'hw1faster.wav');
wavwrite(z,'hw1frequency.wav');
