Likewise, to lower pitch, we play each grain at a slower speed, but move onto the next grain sooner so that the overall sample has the same duration. Granular synthesis is rather complex, but it involves dividing the sample up into small fragments called “grains." When playing back a sample, if we want the pitch higher, we play the grain at a higher speed, but we play it over and over again until it takes the same amount of time as the grain played at original speed. This project uses a technique called granular synthesis to change the pitch of the input.
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