(→Matlab Code) |
(→Matlab Code) |
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wavplay(x,44100) | wavplay(x,44100) | ||
wavwrite(x, 44100, 'Forward44k.wav'); | wavwrite(x, 44100, 'Forward44k.wav'); | ||
| + | |||
%Backwards at 44100 Hz | %Backwards at 44100 Hz | ||
wavplay(jpbackward,44100) | wavplay(jpbackward,44100) | ||
wavwrite(jpbackward, 44100, 'Backward44k.wav'); | wavwrite(jpbackward, 44100, 'Backward44k.wav'); | ||
| + | |||
%Backwards at 22050 Hz | %Backwards at 22050 Hz | ||
wavplay(jpbackward,22050) | wavplay(jpbackward,22050) | ||
Revision as of 09:42, 3 September 2008
Sound Files
Matlab Code
%Phil Cannon
%pjcannon@purdue.edu
%ECE301 HW1_2
%This file imports the file 'jpforward.wav' in the local directory. It
%then plays the file forwards at 44khz, backwards at 44khz, and backwards
%at 22khz. I found it easiest to interpret the subliminal message at
%44khz.
[x,fs,nbits]=wavread('jpforward.wav');
%Reverse the matrix array
for count=1:length(x)
jpbackward(length(x)-(count-1))=x(count);
end
%Forwards at 44100 Hz
wavplay(x,44100)
wavwrite(x, 44100, 'Forward44k.wav');
%Backwards at 44100 Hz
wavplay(jpbackward,44100)
wavwrite(jpbackward, 44100, 'Backward44k.wav');
%Backwards at 22050 Hz
wavplay(jpbackward,22050)
wavwrite(jpbackward, 22050, 'Backward22k.wav');
