(New page: == Wave Files == * forward at 44100Hz * backward at 44100Hz * backward at 22050Hz == Matlab Codes == <pre> % Sa...)
 
(Wave Files)
 
Line 2: Line 2:
 
*[[Media:forward.wav _ECE301Fall2008mboutin| forward at 44100Hz]]
 
*[[Media:forward.wav _ECE301Fall2008mboutin| forward at 44100Hz]]
 
*[[Media:backward.wav _ECE301Fall2008mboutin| backward at 44100Hz]]
 
*[[Media:backward.wav _ECE301Fall2008mboutin| backward at 44100Hz]]
*[[Media:backward@22050.wav _ECE301Fall2008mboutin| backward at 22050Hz]]
+
*[[Media:backward22050.wav _ECE301Fall2008mboutin| backward at 22050Hz]]
 +
 
 
== Matlab Codes ==
 
== Matlab Codes ==
 
<pre>
 
<pre>

Latest revision as of 23:30, 4 September 2008

Wave Files

Matlab Codes

% Sang Mo Je(00219-76434) 
% HW 1_2 Hidden Backward Message

forward=wavread('jpforward.wav');              
wavwrite(forward, 44100, 'Forward.wav'); %forward 
backward=flipud(forward);
wavwrite(backward, 44100, 'backward.wav'); %backward
wavwrite(backward, 22050, 'backward22050.wav'); %backward@22050

Result

Playing forward sounds like "Beyond the Realms of Death"

Playing backward sounds like "I took my life"

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To all math majors: "Mathematics is a wonderfully rich subject."

Dr. Paul Garrett