This report comes from the Official Star Wars Site!
Answered by: Ben Burtt

How did you decide to give Zam Wesell's speeder that howl? Is it based on its look? Where did that sound come from?

The howl of Zam's speeder was produced with an old electric guitar. I play drums in a church band and I asked guitarist Dave Weaver to make the sounds for me one day after practice. I chopped the sound up with a synthesizer program and ran it through an old time spring reverb system. The idea was to produce a sound as if Zam's speeder were not rocket-powered, but ran on some sort of magnetism, perhaps in a field produced by the automatic Coruscant traffic control.

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