The initial playing sounds like the singer says "They opened up the skies" when played forwards but seems to say "take this life of mine" when reversed. I left the song at regular speed but the song can be sped up or slowed down by multiplying the sample_rate variable by any number less than one to slow it and greater than one to speed it up.
%Scott Hamilton %HW 1.2 %ECE 301 %9/4/08 clear clc %read data from .wav file [data, sample_rate, bits_per_sample] = ... wavread('e:\School\ECE 301\HW1\jpforward.wav'); %play the original version wavplay(data, sample_rate); % sounds like "they opened up the sky" %flip data set to be played in reverse data = flipud(data); %play clip in reverse wavplay(data, sample_rate); %sounds like "hey hey this land is mine" %write new .wav file wavwrite(data, 1 / sample_rate, 32, 'e:\School\ECE 301\HW1\jpbackward.wav');
Resulting .wav file jpbackward