tuning tubes

["Qua Veda" <>]

Hi,
I heard about this on public radio. I wonder of anyone on this list has
experimented with this.  City sounds are recorded by placing a mic at a
harmonic node in a large "tuning tube" mounted on a car.  The tube is
tuned to Bb.  This apparently acts as a filter to pass only the
fundamental Bb and its harmonics.  This renders a musical, dreamy
quality to the cacophony of the source sounds.

http://www.nextbigthing.org/   Show #441, scroll down to: City Symphony

Do you think one of these tube setups could be created inexpensively?
What kind of tube material, or mic would be required?  Perhaps this
tuning effect could be roughly simulated by using some kind of EQ or
filter. Any ideas?=20=20

-Qua



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