Octave cascade for organelle, but with different sounds

Hello. Pardon if this is too much of a noob questions. I am very interested in the waterfall up synth, however, I would like the sounds of this synth to be my voice instead of the preset ‘bell’ sound. In essence, I like the octave up function, but I would like to use different samples. Is this possible, and if so how? Much thanks in advance.