As detailed in this perfect, explanatory video by Vox, the Shepard Tone creates the impression of a tone that is constantly rising in pitch, yet seemingly never getting any higher or lower. This in turn has been used throughout cinema, in either scores or sound design, to manipulate the perspective of the listener. Using FORM, product expert Reuben Cornell shows how to transform simple samples into huge Shepard tones, and use infinitely rising effects, so that you can add a cinematic edge to your sound.