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If you are getting overly excited in anticipation of the new Star Wars film, maybe you need to take a deep breath–right along with Darth Vader. Ten full hours of Darth Vader breathing is available on YouTube for your listening pleasure. That deep, daunting, menacing respiration–sounding simultaneously like a dying yet still deadly Darth Vader coming at you and for you–is as memorable as Darth Vader’s mask. That sound, by the way, is not only scary, it’s trademarked.

The man responsible for the gasping, ominous, half-human, half-machine breath of Darth Vader, and many other sounds from Star Wars, is sound engineer Ben Burtt. The recipient of a number of academy awards for sounds effects editing, Burtt created Vader’s breath by recording his own using an old scuba regulator. It turns out the mechanical sound of Darth Vader actually is mechanical. Air inside a scuba tank is compressed to a very high pressure in order to carry an adequate supply. A scuba diving regulator device works to reduce the high pressure air to a pressure that is breathable. The first regulators used at depth were developed in 1942 by Jacques Cousteau and Emile Gagnan, a French engineer.

The heavy breathing of Darth Vader also connotes a slightly claustrophobic feeling–which is what some divers can tell you they feel the first time they counter intuitively breathe underwater through such a device. As you dive deeper, the air you breath becomes more compressed and more dense, making it harder to inhale and causing you to breathe harder–maybe just like Darth Vader, but under the sea.