HW1.2 Jun Hyeong Park ECE301Fall2008mboutin - Rhea

Sound Files

• Backward at 44100Hz
• Backward at 22050Hz

Matlab Codes

% Jun Hyeong Park 
% ECE 301 HW #1_ Hidden backward message

Fs=44100;
name='jpforward.wav';
conforward=wavread(name);   % generate a column vector           
conback=flipud(conforward); % reverse this column vector
wavplay(conback,Fs)         % play backward at 44100hz sampling rate. 
pause(1)
wavplay(conback,Fs/2)       % play backward at 22050hz sampling rate.

% (a) The forward says ,"Beyond the Realms Of Death"
% (b) Backward has a message and that was "I took my life.".

Message

• This is one of the famous songs for Backward masking.
• (a) The forward says, "Beyond the Realms of Death".
• (b) The backward says, "I took my life".