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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. | ||
| + | ---- | ||
| + | <pre> | ||
| + | %Emily Blount | ||
| + | %Homework 1 | ||
| + | %September 4, 2008 | ||
| + | %ECE 301, Mimi Boutin | ||
| + | %clear memory and console | ||
| + | clear; | ||
| + | clc; | ||
| + | |||
| + | %Part a: Playing Twinkle Twinkle Little Star (since I don't know Hail Purdue.) | ||
| + | |||
| + | % Note Frequencies | ||
| + | C = 261.626; | ||
| + | D = 9*C/8; | ||
| + | E = 5*C/4; | ||
| + | F = 4*C/3; | ||
| + | G = 3*C/2; | ||
| + | A = 5*C/3; | ||
| + | B = 15*C/8; | ||
| + | Chi = 2*C; | ||
| + | |||
| + | %Array of Notes for Song | ||
| + | S = [C, C, G, G, A, A, G, F, F, E, E, D, D, C]; | ||
| + | |||
| + | %Time definition and Sampling Frequency | ||
| + | delta = 0.00005; | ||
| + | endtime = 0.5; | ||
| + | t = 0:delta:endtime; | ||
| + | |||
| + | %Playing the song | ||
| + | for x = 1:1:length(S) | ||
| + | song = sin(2*pi * t * S(x)); | ||
| + | sound(song, 1/delta); | ||
| + | end | ||
| + | |||
| + | pause(5) | ||
| + | |||
| + | %Part b: Playing the song 2x faster | ||
| + | delta = 0.00005; | ||
| + | endtime = .25; | ||
| + | t = 0:delta:endtime; | ||
| + | |||
| + | %Playing the song | ||
| + | for x = 1:1:length(S) | ||
| + | song = sin(2*pi * t * S(x)); | ||
| + | sound(song, 1/delta); | ||
| + | end | ||
| + | |||
| + | pause(5) | ||
| + | |||
| + | %Part c: Rescaling song to y(t)=x(2t) | ||
| + | delta = 0.00005; | ||
| + | endtime = 0.5; | ||
| + | t = 0:delta:endtime; | ||
| + | |||
| + | %Playing the song | ||
| + | for x = 1:1:length(S) | ||
| + | song = sin(2*pi * 2* t * S(x)); | ||
| + | sound(song, 1/delta); | ||
| + | end | ||
| + | <\pre> | ||
Latest revision as of 09:04, 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.
%Emily Blount
%Homework 1
%September 4, 2008
%ECE 301, Mimi Boutin
%clear memory and console
clear;
clc;
%Part a: Playing Twinkle Twinkle Little Star (since I don't know Hail Purdue.)
% Note Frequencies
C = 261.626;
D = 9*C/8;
E = 5*C/4;
F = 4*C/3;
G = 3*C/2;
A = 5*C/3;
B = 15*C/8;
Chi = 2*C;
%Array of Notes for Song
S = [C, C, G, G, A, A, G, F, F, E, E, D, D, C];
%Time definition and Sampling Frequency
delta = 0.00005;
endtime = 0.5;
t = 0:delta:endtime;
%Playing the song
for x = 1:1:length(S)
song = sin(2*pi * t * S(x));
sound(song, 1/delta);
end
pause(5)
%Part b: Playing the song 2x faster
delta = 0.00005;
endtime = .25;
t = 0:delta:endtime;
%Playing the song
for x = 1:1:length(S)
song = sin(2*pi * t * S(x));
sound(song, 1/delta);
end
pause(5)
%Part c: Rescaling song to y(t)=x(2t)
delta = 0.00005;
endtime = 0.5;
t = 0:delta:endtime;
%Playing the song
for x = 1:1:length(S)
song = sin(2*pi * 2* t * S(x));
sound(song, 1/delta);
end
<\pre>
