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| − | == | + | ==Matlab Code== |
<pre> | <pre> | ||
%I-Cheng Chen | %I-Cheng Chen | ||
%09/05/08 | %09/05/08 | ||
%ECE301 hw1.2 | %ECE301 hw1.2 | ||
| + | |||
| + | %Load up the wav file into Matlab | ||
| + | FS=44100; %44100 Hz sampling rate | ||
| + | [Y,FS,NBITS]=wavread('jpforward.wav'); | ||
| + | |||
| + | %Forward version | ||
| + | wavplay(Y,FS); | ||
| + | pause(1) | ||
| + | |||
| + | YBACK=flipud(Y); %reverse the signal | ||
| + | |||
| + | %Reversed version | ||
| + | wavplay(YBACK,FS); | ||
| + | pause(2) | ||
| + | |||
| + | %Slow speed of the song | ||
| + | FS_SLOW=FS/2; | ||
| + | wavplay(y,FS_SLOW); | ||
| + | pause(3) | ||
| + | |||
| + | %Fast speed of the song | ||
| + | FS_FAST=FS*2;; | ||
| + | wavplay(y,FS_FAST); | ||
| + | |||
</pre> | </pre> | ||
| + | |||
| + | ==Message== | ||
| + | The forward message is "Beyond the realm of death".<br> | ||
| + | The backward message is "I took my life". | ||
Latest revision as of 16:46, 5 September 2008
Matlab Code
%I-Cheng Chen
%09/05/08
%ECE301 hw1.2
%Load up the wav file into Matlab
FS=44100; %44100 Hz sampling rate
[Y,FS,NBITS]=wavread('jpforward.wav');
%Forward version
wavplay(Y,FS);
pause(1)
YBACK=flipud(Y); %reverse the signal
%Reversed version
wavplay(YBACK,FS);
pause(2)
%Slow speed of the song
FS_SLOW=FS/2;
wavplay(y,FS_SLOW);
pause(3)
%Fast speed of the song
FS_FAST=FS*2;;
wavplay(y,FS_FAST);
Message
The forward message is "Beyond the realm of death".
The backward message is "I took my life".
