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Originally Posted by Dang
Actually, most of the pipe organs I've seen (...don't ask) have used a cap technique. For example. you take a 16 foot pipe and cap the top to create the equivalent of the a 32 foot pipe (one octave lower). The air has to travel up then down, so travels twice the distance.
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Sure. "stopped" versus "open" pipes. The synthesized approach saves space and money by not needing the pipes at all. It allows having a 16' rank of pipes for the pedal on a small organ with only 8' ranks by coupling in ranks at unison and a fifth higher. Pretty klunky, and not something I'd advertise as a great feature in a premium car stereo system!
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......not sure how I relate any of this information to my car mind you....
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Well, exhaust pipes are tuned!