Latest revision as of 08:36, 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:

• Media:HailPurdueReg_ECE301Fall2008mboutin.wav
• Media:HailPurdueFast_ECE301Fall2008mboutin.wav
• Media:HailPurdueTrans_ECE301Fall2008mboutin.wav

MATLAB CODE

DJ David Hartmann

%ECE 301, Prof. Mimi Boutin

%HW 1

%September 5, 2008

delta = 0.00005;

tied = [0:delta:1.2]; %Setting duration of notes

half = [0:delta:0.8];

dottedquarter = [0:delta:0.6];

quarter = [0:delta:0.4];

eighth = [0:delta:0.2];

half_e = sin(2*pi*330*half); %Setting sine waves that represent each note/lengths

quarter_f = sin(2*pi*352*quarter);

quarter_g = sin(2*pi*396*quarter);

dottedquarter_a = sin(2*pi*440*dottedquarter);

quarter_a = sin(2*pi*440*quarter);

eighth_b = sin(2*pi*495*eighth);

quarter_c = sin(2*pi*528*quarter);

tied_c = sin(2*pi*528*tied);

eighth_d = sin(2*pi*594*eighth);

quarter_d = sin(2*pi*594*quarter);

%Vector containing appropriate notes/lengths

HP = [half_e, quarter_f, quarter_g, dottedquarter_a, eighth_b, quarter_c,quarter_c, quarter_d, eighth_d, eighth_d, quarter_a, eighth_b, eighth_b, tied_c];

%Get ready to Boiler Up to the tune of Hail Purdue Matlab style!

sound(HP, 1/delta)

%_______________PART B_________________FASTER

tied = [0:delta:0.6]; %Setting duration of notes

half = [0:delta:0.4];

dottedquarter = [0:delta:0.3];

quarter = [0:delta:0.2];

eighth = [0:delta:0.1];

half_e = sin(2*pi*330*half); %Setting sine waves that represent each note/lengths

quarter_f = sin(2*pi*352*quarter);

quarter_g = sin(2*pi*396*quarter);

dottedquarter_a = sin(2*pi*440*dottedquarter);

quarter_a = sin(2*pi*440*quarter);

eighth_b = sin(2*pi*495*eighth);

quarter_c = sin(2*pi*528*quarter);

tied_c = sin(2*pi*528*tied);

eighth_d = sin(2*pi*594*eighth);

quarter_d = sin(2*pi*594*quarter);

%Vector containing appropriate notes/lengths

HPF = [half_e, quarter_f, quarter_g, dottedquarter_a, eighth_b, quarter_c,quarter_c, quarter_d, eighth_d, eighth_d, quarter_a, eighth_b, eighth_b, tied_c];

%Get ready to Boiler Up to the tune of Hail Purdue Matlab style at twice the speed!

sound(HPF, 1/delta)

%______________PART C________________HIGHER

tied = [0:delta:1.2]; %Setting duration of notes

half = [0:delta:1.0];

dottedquarter = [0:delta:0.6];

quarter = [0:delta:0.4];

eighth = [0:delta:0.2];

half_e = sin(4*pi*330*half); %Setting sine waves that represent each note/lengths

quarter_f = sin(4*pi*352*quarter);

quarter_g = sin(4*pi*396*quarter);

dottedquarter_a = sin(4*pi*440*dottedquarter);

quarter_a = sin(4*pi*440*quarter);

eighth_b = sin(4*pi*495*eighth);

quarter_c = sin(4*pi*528*quarter);

tied_c = sin(4*pi*528*tied);

eighth_d = sin(4*pi*594*eighth);

quarter_d = sin(2*pi*594*quarter);

%Vector containing appropriate notes/lengths

HPS = [half_e, quarter_f, quarter_g, dottedquarter_a, eighth_b, quarter_c,quarter_c, quarter_d, eighth_d, eighth_d, quarter_a, eighth_b, eighth_b, tied_c];

%Get ready to Boiler Up to the tune of Hail Purdue Matlab style at the next octave!

sound(HPS, 1/delta)

Results

Media:HailPurdueReg_ECE301Fall2008mboutin.wav

Media:HailPurdueFast_ECE301Fall2008mboutin.wav

Media:HailPurdueTrans_ECE301Fall2008mboutin.wav