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:Song1_ECE301Fall2008mboutin.wav
Matlab Code
delta = 0.00005; o = (0:delta:0.05); O = (0:delta:0.5); c2 = sin(2*pi*262*(0:delta:1)); d1 = sin(2*pi*294*(0:delta:.5)); e1 = sin(2*pi*330*(0:delta:.5)); f2 = sin(2*pi*349*(0:delta:.75)); f1 = sin(2*pi*349*(0:delta:.50)); f = sin(2*pi*349*(0:delta:.25)); g = sin(2*pi*392*(0:delta:.25)); g1 = sin(2*pi*392*(0:delta:0.5)); g2 = sin(2*pi*392*(0:delta:0.5)); a1 = sin(2*pi*440*(0:delta:.50)); a = sin(2*pi*440*(0:delta:0.25)); a2 = sin(2*pi*440*(0:delta:1)); bb1 = sin(2*pi*466*(0:delta:.50)); bb = sin(2*pi*466*(0:delta:0.25)); notes1=[c2,d1,e1,f2,o,g,a1,o,a1,bb1,o,bb,o,bb,f1,g,o,g,a2,O,a2,o,a1,g1,f2,g,a1,o,a,o,a,g1,d1,f,e1,f,g1,g1]; sound (notes1,1/delta); wavwrite(notes1,1/delta,32,'song1.wav'); delta = 0.000005; o = (0:delta:0.025); O = (0:delta:0.25); c2 = sin(2*pi*262*(0:delta:.5)); d1 = sin(2*pi*294*(0:delta:.25)); e1 = sin(2*pi*330*(0:delta:.25)); f2 = sin(2*pi*349*(0:delta:.5)); f1 = sin(2*pi*349*(0:delta:.250)); f = sin(2*pi*349*(0:delta:.125)); g = sin(2*pi*392*(0:delta:.125)); g1 = sin(2*pi*392*(0:delta:0.25)); g2 = sin(2*pi*392*(0:delta:0.5)); a1 = sin(2*pi*440*(0:delta:.250)); a = sin(2*pi*440*(0:delta:0.125)); a2 = sin(2*pi*440*(0:delta:.5)); bb1 = sin(2*pi*466*(0:delta:.250)); bb = sin(2*pi*466*(0:delta:0.125)); notes2=[c2,d1,e1,f2,o,g,a1,o,a1,bb1,o,bb,o,bb,f1,g,o,g,a2,O,a2,o,a1,g1,f2,g,a1,o,a,o,a,g1,d1,f,e1,f,g1,g1]; sound (notes2,1/delta); wavwrite(notes2,1/delta,32,'song2.wav'); delta = 0.00005; o = (0:delta:0.05); O = (0:delta:0.5); c2 = sin(4*pi*262*(0:delta:1)); d1 = sin(4*pi*294*(0:delta:.5)); e1 = sin(4*pi*330*(0:delta:.5)); f2 = sin(4*pi*349*(0:delta:.75)); f1 = sin(4*pi*349*(0:delta:.50)); f = sin(4*pi*349*(0:delta:.25)); g = sin(4*pi*392*(0:delta:.25)); g1 = sin(4*pi*392*(0:delta:0.5)); g2 = sin(4*pi*392*(0:delta:0.5)); a1 = sin(4*pi*440*(0:delta:.50)); a = sin(4*pi*440*(0:delta:0.25)); a2 = sin(4*pi*440*(0:delta:1)); bb1 = sin(4*pi*466*(0:delta:.50)); bb = sin(4*pi*466*(0:delta:0.25)); notes3=[c2,d1,e1,f2,o,g,a1,o,a1,bb1,o,bb,o,bb,f1,g,o,g,a2,O,a2,o,a1,g1,f2,g,a1,o,a,o,a,g1,d1,f,e1,f,g1,g1]; sound (notes3,1/delta); wavwrite(notes3,1/delta,32,'song3.wav'); list1 = [notes1,notes2,notes3]; wavwrite(list1,1/delta,32,'list.wav'); wavwrite([notes1,notes2,notes3],1/delta,32,'list2.wav');
