Difference between revisions of "HW1.4 Adam Siembida ECE301Summer2009" - Rhea

Revision as of 08:05, 24 June 2009

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-% Adam Siembida
+temp
-% adam (dot) siembida (at) gmail (dot) com
-% asiembid (at) purdue (dot) edu
-% ECE301 - HW1.4
-% 6/24/2009
-% Reset workspace
-clear all;
-format compact;
-clc
-% Using the fact that A = 440
-%                 and A = (5*x)/3
-x = 440*3/5;
-% Three octaves of notes
-uB = 15*(2*x)/8;
-uA = 5*(2*x)/3;
-uAsharp = uA*(2^(1/12));
-uG = 3*(2*x)/2;
-uF = 4*(2*x)/3;
-uE = 5*(2*x)/4;
-uD = 9*(2*x)/8;
-uC = (2*x);
-mB = 15*x/8;
-mA = 5*x/3;
-mAsharp = mA*(2^(1/12));
-mG = 3*x/2;
-mF = 4*x/3;
-mE = 5*x/4;
-mD = 9*x/8;
-mC = x;
-lB = 15*(x/2)/8;
-lA = 5*(x/2)/3;
-lAsharp = lA*(2^(1/12));
-lG = 3*(x/2)/2;
-lF = 4*(x/2)/3;
-lE = 5*(x/2)/4;
-lD = 9*(x/2)/8;
-lC = (x/2);
-%rest
-r = 0;
-%note durations
-speed = 3; %higher number increases note duration
-w = 1*speed; %whole note
-h = (1/2)*speed; %half note
-q = (1/4)*speed; %quarter note
-e = (1/8)*speed; %eight note
-s = (1/16)*speed; %sixteenth note
-ds= (3/32)*speed; %dotted sixteenth note
-%====================SONG DATA====================
-%the first row holds the frequencies as notes
-%the second row holds the duration of the notes as defined above
-SongData = [mE,mE,mE,r,mC,mE,mG,lG, mC,lG,r,lE,r,lA,lB,r,lAsharp,lA;
-             s, e, s,s, s, e, q, q,e+s, s,e, e,s, e, s,s,      s, e];
-%          ^1st meas               ^2nd meas
-SongData2 = [lG,mE,mG,mA,mF,mG,r,mE,mC,mD, lB;
-             ds,ds, s, e, s, s,s, e, s, s,e+s];
-%          ^3rd meas
-% put first part and second part of song together
-SongData = [SongData, SongData2];
-%==================END SONG DATA==================
-% Find out how many notes the song is
-SongLength = size(SongData);
-SongLength = SongLength(1,2);
-% inital values of for loop
-y=[];
-t = 0.0001;
-del = 0.0001;
-% builds the notes into a single signal
-for index = 1:1:SongLength
-    % start and end times of the note
-    start_time = t;
-    end_time = start_time + SongData(2,index);
-    % create time interval over which to play the note
-    T = start_time:del:end_time;
-    % time that the next note will start at
-    t = end_time;
-    % add the frequency data for the time interval
-    % there arent many loops so it doesnt matter that y is not predefined
-    y = [y, sin(2.*pi.*SongData(1,index).*T)];
-end
-% plays the song
-sound(y,1/del);<nowiki>Insert non-formatted text here</nowiki>

Difference between revisions of "HW1.4 Adam Siembida ECE301Summer2009" - Rhea

Revision as of 08:05, 24 June 2009

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