Difference between revisions of "Hw1 ECE301S11 Yixin Wang" - Rhea

Revision as of 18:53, 14 January 2011

Question 1: MATLAB code: Media:Example.ogg Sound file: Media:Example.ogg

@@ Line 1: / Line 1: @@
-% Question 1
+Question 1:
-function[] = question1()
+MATLAB code: [[Media:Example.ogg]]
-N1 = sin(2*pi*391.995436*[0:0.0001:1]);         %G quarter note
+Sound file:  [[Media:Example.ogg]]
-N2 = sin(2*pi*466.1637615*[0:0.0001:1]);        %Bflat quarter
-N3 = sin(2*pi*523.2511306*[0:0.0001:1.5]);      %C dotted quarter
-N4 = sin(2*pi*391.995436*[0:0.0001:1]);         %G quarter
-N5 = sin(2*pi*466.1637615*[0:0.0001:1]);        %Bflat quarter
-N6 = sin(2*pi*554.3652618*[0:0.0001:0.5]);      %Csharp eigth
-N7 = sin(2*pi*523.2511306*[0:0.0001:2]);        %C half
-rest = [0:0.0001:2.5];                         %rest half and an eigth
-%smoke on the water (part a):
-tune = [N1 N2 N3 N4 N5 N6 N7 N1 N2 N3 N2 N1 rest];
-newtune = [1:1:(length(tune)/2)];
-% newtune(t) = tune(2t)
-for i=1:(length(tune)/2)
-    newtune(1,i) = tune(1,2*i);
-end
-%all three parts:
-alltunes = [tune newtune newtune];
-wavwrite(0.02*alltunes, 18667, 'question1.wav');
-. Repeated phrase "number nine".
-. I don't hear anything in the reversed message.