h a l f b a k e r yYou could have thought of that.
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This is a bass flute made out of a tractor trailer. I noticed
today when the 14 year old rolled down the back window
about half way that the whole car started vibrating at
about 10 hertz which I guess is about 6 octaves below
middle c. I guess the wind going by the opening of the
back window
created a resonator like a flute. I was
thinking it would be nice to experiment with this and
maybe make an instrument. I wonder if you turned a truck
cab into a mouthpiece like shape and then connected it too
the trailer part of the truck and cut openings that could be
controlled remotely, if you could create a gigantic bass
flute that would play as you traveled along the highway.
Alternatively to this you could just have flutes that are
mounted on the outside of a car and that have air funneled
into their mouth pieces. This wouldn't have to be a bass
flute. I guess you could have a whole convoy of car
woodwinds.
Flute-based speed analysis countermeasures?
Dispensable_20Radar_20Detector_2fJammers
(okay, that feature is not ready for prime time yet) [normzone, Jan 05 2012]
if you hold a saxophone out a car window at 30 mph it plays itself
http://www.facebook...d=2231246848&v=wall
[JesusHChrist, Jan 06 2012]
[link]
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// the whole car started vibrating at about 10 hertz which
I guess is about 6 octaves below middle c. I guess the wind
going by the opening of the back window created a
resonator like a flute. // |
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That, or your tie-rod ends suddenly wore out. |
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With a fleet of finely-tuned trucks and a multilane
highway, a young composer could make their name in the
music and automotive industries simultaneously. Perfectly-
choreographed sequences of accelleration and
decelleration would introduce harmonics and accents with
engine notes, air brakes, and tire noise. |
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Best not to think about percussion. |
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//sequences of accelleration and decelleration//
Only for octaves -- for other intervals, you'd have
keys. |
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Yes, all held out the drivers' windows and jingled in
perfect unison. |
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//...vibrating at about 10 hertz which I guess is about 6 octaves below middle c.// |
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Middle C is 256 Hz, and frequency halves with every octave down, so 6 octaves down is 4 Hz |
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(Hmmm... PVC Pipe organ truck, thinks I...) |
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I've noticed that resonation when one rear window is opened a bit too. This idea would work well for aeroplanes too. |
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[+] I like it. I imagine a highway orchestra...and maybe some back road symphony.
This is like blowing air into an empty bottle. The size changes the pitch and tone. |
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Rather than having holes and keys, you could make the trailer longer and shorter like a trombone. |
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When I haul ladders angled up and over the roof of my truck the open-ended rungs make a high pitched whistle at highway speeds. (+) |
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Serious question, w/ advance forgiveness begged - I've never had
opportunity to try noise-cancelling headphones; how well would
they handle a loud, low, steady pitched note? |
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What was that? Sorry, didn't hear. Must be your bass voice... |
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"Do you know how fast you were going ?"
"Sorry officer, I was just trying to play 'Toccata and Fugue in D'" |
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Ooh, good point, [bigsleep]. This may lead to a feature creep on my dispensable radar detector / jammer (link). |
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What would the revenuers use to determine your speed? Shotgun microphones with frequency analyzing tools? What would be the best way to address that? Sound canceling technology? |
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EDIT: I think you may need to use one of those anti-personel sound-emitting devices, tightly focused, playing Old Man River. |
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//Middle C is 256 Hz// A more common value these days is 440 Hz * 2^(3/12), approximately 261.625565 Hz, but that's a very minor quibble, as 256 Hz is well within the recent historical range, and even now, it's not all that firmly fixed in practice. |
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As it happens, I've used a 256 Hz middle C as a tonic, in situations where the exact value was somewhat arbitrary and I appreciated the simpler arithmetic. |
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For completeness, 10 hz is approximately 4.678072 octaves below 256 Hz, and 4.709432 octaves below 261.625565 Hz. Not that it really matters. |
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Also, your trailer was more like an ocarina than a flute. |
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