Difference between revisions of "Hw1 ECE301S11 Sachin Santhakumar" - Rhea

Latest revision as of 07:58, 19 January 2011

% Sachin Santhakumar
% ECE 301
% HW 01 Problem 01
% Playing Music
% 01/19/2011

clear;
clc;

% beats per second
bps = 112/60;
% seconds per beat
beat_time = bps^-1;

% Length of time for each entry in the sound array
delta = 0.00005;

% Note lengths
quarter = 0:delta:beat_time;
half = 0:delta:beat_time*2;
dotquart = 0:delta:beat_time*(3/2);
eighth = 0:delta:beat_time*(1/2);

% Note frequencies
freqG = 391.995;
freqBf = 466.164;
freqC = 523.251;
freqDf = 554.365;

% Construction of the signal of all the required notes
GQ = sin(2*pi*freqG*quarter);
BfQ = sin(2*pi*freqBf*quarter);
CDq = sin(2*pi*freqC*dotquart);
DfE = sin(2*pi*freqDf*eighth);
CH = sin(2*pi*freqC*half);
CDq = sin(2*pi*freqC*dotquart);
Erest = zeros((eighth/delta),1);
Hrest = zeros((half/delta),1);

% Signal for the song
X = [GQ,BfQ,CDq,GQ,BfQ,DfE,CH,GQ,BfQ,CDq,BfQ,GQ,Erest,Hrest];

% Plays wav file
wavplay(X,1/delta);
wavwrite(X,1/delta,32,'SmokeWaterSanthakumar');

% Plays wav file twice as fast
wavplay(X,(2/delta));
wavwrite(X,2/delta,32,'SmokeWater2xSpeedSanthakumar');

% Transformation of y(t) = x(2t);
GQ = sin(4*pi*freqG*quarter);
BfQ = sin(4*pi*freqBf*quarter);
CDq = sin(4*pi*freqC*dotquart);
DfE = sin(4*pi*freqDf*eighth);
CH = sin(4*pi*freqC*half);
CDq = sin(4*pi*freqC*dotquart);
Erest = zeros((2*eighth/delta),1);
Hrest = zeros((2*half/delta),1);

Y = [GQ,BfQ,CDq,GQ,BfQ,DfE,CH,GQ,BfQ,CDq,BfQ,GQ,Erest,Hrest];

% Plays modified wav file
wavplay(Y,1/delta);
wavwrite(Y,1/delta,32,'SmokeWaterTransformedSanthakumar');

% Sachin Santhakumar
% ECE 301
% HW 01 Problem 02
% Hidden Backward Message
% 01/19/2011

clear;
clc;

% Reads in wav file
[Y, f] = wavread ('Beatles.wav');

Yrev = flipud (Y);
% Plays backwards wav file
wavplay(Yrev,f);

% Forwards the sound clip seems to say "Number Nine"
% Backwards the sound clip seems to say "Turn Me On Dead Man"

@@ Line 1: / Line 1: @@
-% Sachin Santhakumar<br>% ECE 301<br>% HW 01 Problem 01<br>% Playing Music<br>% 01/19/2011
+[[Media:SmokeWaterSanthakumar.wav]]
-clear;<br>clc;
+[[Media:SmokeWater2xSpeedSanthakumar.wav]]
-% beats per second<br>bps = 112/60;<br>% seconds per beat<br>beat_time = bps^-1;
+[[Media:SmokeWaterTransformedSanthakumar.wav]]
-% Length of time for each entry in the sound array<br>delta = 0.00005;
+% Sachin Santhakumar<br>% ECE 301<br>% HW 01 Problem 01<br>% Playing Music<br>% 01/19/2011
-% Note lengths<br>quarter = 0:delta:beat_time;<br>half = 0:delta:beat_time*2;<br>dotquart = 0:delta:beat_time*(3/2);<br>eighth = 0:delta:beat_time*(1/2);
+clear;<br>clc;
-% Note frequencies<br>freqG = 391.995;<br>freqBf = 466.164;<br>freqC = 523.251;<br>freqDf = 554.365;
+% beats per second<br>bps = 112/60;<br>% seconds per beat<br>beat_time = bps^-1;
-% Construction of the signal of all the required notes<br>GQ = sin(2*pi*freqG*quarter);<br>BfQ = sin(2*pi*freqBf*quarter);<br>CDq = sin(2*pi*freqC*dotquart);<br>DfE = sin(2*pi*freqDf*eighth);<br>CH = sin(2*pi*freqC*half);<br>CDq = sin(2*pi*freqC*dotquart);<br>Erest = zeros((eighth/delta),1);<br>Hrest = zeros((half/delta),1);
+% Length of time for each entry in the sound array<br>delta = 0.00005;
-% Signal for the song<br>X = [GQ,BfQ,CDq,GQ,BfQ,DfE,CH,GQ,BfQ,CDq,BfQ,GQ,Erest,Hrest];
+% Note lengths<br>quarter = 0:delta:beat_time;<br>half = 0:delta:beat_time*2;<br>dotquart = 0:delta:beat_time*(3/2);<br>eighth = 0:delta:beat_time*(1/2);
-% Plays wav file<br>wavplay(X,1/delta);<br>wavwrite(X,1/delta,32,'SmokeWaterSanthakumar');
+% Note frequencies<br>freqG = 391.995;<br>freqBf = 466.164;<br>freqC = 523.251;<br>freqDf = 554.365;
-% Plays wav file twice as fast<br>wavplay(X,(2/delta));<br>wavwrite(X,2/delta,32,'SmokeWater2xSpeedSanthakumar');
+% Construction of the signal of all the required notes<br>GQ = sin(2*pi*freqG*quarter);<br>BfQ = sin(2*pi*freqBf*quarter);<br>CDq = sin(2*pi*freqC*dotquart);<br>DfE = sin(2*pi*freqDf*eighth);<br>CH = sin(2*pi*freqC*half);<br>CDq = sin(2*pi*freqC*dotquart);<br>Erest = zeros((eighth/delta),1);<br>Hrest = zeros((half/delta),1);
-% Transformation of y(t) = x(2t);<br>GQ = sin(4*pi*freqG*quarter);<br>BfQ = sin(4*pi*freqBf*quarter);<br>CDq = sin(4*pi*freqC*dotquart);<br>DfE = sin(4*pi*freqDf*eighth);<br>CH = sin(4*pi*freqC*half);<br>CDq = sin(4*pi*freqC*dotquart);<br>Erest = zeros((2*eighth/delta),1);<br>Hrest = zeros((2*half/delta),1);
+% Signal for the song<br>X = [GQ,BfQ,CDq,GQ,BfQ,DfE,CH,GQ,BfQ,CDq,BfQ,GQ,Erest,Hrest];
-Y = [GQ,BfQ,CDq,GQ,BfQ,DfE,CH,GQ,BfQ,CDq,BfQ,GQ,Erest,Hrest];
+% Plays wav file<br>wavplay(X,1/delta);<br>wavwrite(X,1/delta,32,'SmokeWaterSanthakumar');
-% Plays modified wav file<br>wavplay(Y,1/delta);<br>wavwrite(X,1/delta,32,'SmokeWaterTransformedSanthakumar');
+% Plays wav file twice as fast<br>wavplay(X,(2/delta));<br>wavwrite(X,2/delta,32,'SmokeWater2xSpeedSanthakumar');
-% Sachin Santhakumar<br>% ECE 301<br>% HW 01 Problem 02<br>% Hidden Backward Message<br>% 01/19/2011
+% Transformation of y(t) = x(2t);<br>GQ = sin(4*pi*freqG*quarter);<br>BfQ = sin(4*pi*freqBf*quarter);<br>CDq = sin(4*pi*freqC*dotquart);<br>DfE = sin(4*pi*freqDf*eighth);<br>CH = sin(4*pi*freqC*half);<br>CDq = sin(4*pi*freqC*dotquart);<br>Erest = zeros((2*eighth/delta),1);<br>Hrest = zeros((2*half/delta),1);
-clear;<br>clc;
+Y = [GQ,BfQ,CDq,GQ,BfQ,DfE,CH,GQ,BfQ,CDq,BfQ,GQ,Erest,Hrest];
-% Reads in wav file<br>[Y, f] = wavread ('Beatles.wav');
+% Plays modified wav file<br>wavplay(Y,1/delta);<br>wavwrite(Y,1/delta,32,'SmokeWaterTransformedSanthakumar');
-Yrev = flipud (Y);<br>% Plays backwards wav file<br>wavplay(Yrev,f);
+% Sachin Santhakumar<br>% ECE 301<br>% HW 01 Problem 02<br>% Hidden Backward Message<br>% 01/19/2011
+clear;<br>clc;
+% Reads in wav file<br>[Y, f] = wavread ('Beatles.wav');
+Yrev = flipud (Y);<br>% Plays backwards wav file<br>wavplay(Yrev,f);
 % Forwards the sound clip seems to say "Number Nine"<br>% Backwards the sound clip seems to say "Turn Me On Dead Man"<br>

Difference between revisions of "Hw1 ECE301S11 Sachin Santhakumar" - Rhea

Latest revision as of 07:58, 19 January 2011

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