Playing a Judas Priest Song - The Code
%Zachary Curosh
%ECE 301 - Homework 1.2
%9/5/2008
clear;
clc;
%First use the wavread command to get the data, sample rate, and bits per
%sample of the judas priest file.
[data,sample_rate,bits]=wavread('jpforward.wav');
%Next, play the original file normally
wavplay(data,sample_rate)
%Then we have to reverse the song using the command flipud
data_rev=flipud(data);
%Next we have to play the reversed song
wavplay(data_rev,sample_rate)
%Then, to play the song slower, simply multiply the sample rate by a
%fraction. Here, I will use 1/2 the rate.
wavplay(data_rev,sample_rate*0.5)
%Lastly, I will write the backwards song using the wavwrite command
wavwrite(data_rev,44100,'Backwards_at_RegularSpeed');
wavwrite(data_rev,22050,'Backwards_at_slowSpeed');
Hidden Message
From listening to the song backwards both at normal and a slowed speed, there are definitely words being sung. However, they are extremely difficult to make out. I believe he said something like, "I gotta go.", but I definitely might be wrong. From hearing this I do not believe that there is a backward message in this Judas Priest song.
