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Old 3rd March 2005, 07:54 PM   #11
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I know that they are doing research on infrasonic weapons to cause enemy combatants to lose control of their bowels.

I also know that one of the car audio competitors who had a vehicle capable of doing 160+ dB at low frequency was doing work with a college or research institution on the effects of low bass on insects. Evidently they put some bugs in the car and played low frequency bass... The bugs basically defecated and vomited everything that was in their system out.

Another funny example was an interview with Fabio in Stereophile, where he talked about the low bass from his system making some houseguests sick. I guess he had 3 martin logan statements (front channels) and a pair of Infinity References (surrounds), each powered by some monstrous krell monoblock (I think his total system power was upwards of 6 thousand watts). His guests thought it was food poisoning until he turned the bass down.

I'm pretty sure that the "brown note" is not a myth, but based on how you described the myth busters doing it, I highly doubt that they reached SPLs capable of inducing it, especially if it was conducted outdoors.
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Old 3rd March 2005, 11:51 PM   #12
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Precisely the point. I don't think it would happen under normal high dB circumstances. Sure, you could stuff a guy into one of those idiotmobiles, turn it up and have something squirt out of him. I bet you could produce multiple orifice expulsion. I'm not sure he'd ever work again though.
If you had witnessed the set up, I think you would agree, the brown note was debunked. His voice was warbled and his eyesight was fuzzy, but no loss of continence. This was more SPL than you are likely to get at any concert or W.H.Y. The myth also suggests that your ability to perform a test such as a puzzle assembly should be affected, ie; disorientation. No problem there either.

Just my 2 cents worth. Personally I don't give a crap.

Which reminds me, how come you put in your two cents worth but people only give you a penny for your thoughts? What happens to the other penny?

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Old 4th March 2005, 04:10 AM   #13
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Quote:
Originally posted by Cal Weldon
[B]Precisely the point. I don't think it would happen under normal high dB circumstances. Sure, you could stuff a guy into one of those idiotmobiles, turn it up and have something squirt out of him. I bet you could produce multiple orifice expulsion. I'm not sure he'd ever work again though.
If you had witnessed the set up, I think you would agree, the brown note was debunked. His voice was warbled and his eyesight was fuzzy, but no loss of continence. This was more SPL than you are likely to get at any concert or W.H.Y. The myth also suggests that your ability to perform a test such as a puzzle assembly should be affected, ie; disorientation. No problem there either.
My understanding was that the brown note is simply playing a frequency low enough that it excites the resonance of your bowels, cause you to poop yourself.

I think this is entirely possible in a car audio or even a home theater environment, so I personally don't think it's debunked. I'm guessing if he got blasted with a 9hz sine @ 140+db, he'd lose it. From the way the setup was described, it didn't sound like it'd get that high.

Quote:
Originally posted by Cal Weldon
[B]
Just my 2 cents worth. Personally I don't give a crap.
I don't either, it just seems like most of their stuff, it's not really as scientific as it should've been.

Quote:
Originally posted by Cal Weldon

Which reminds me, how come you put in your two cents worth but people only give you a penny for your thoughts? What happens to the other penny?

Cal
Probably gets taxed by the thought control folks at the gov't
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Old 4th March 2005, 11:23 AM   #14
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I would have wanted to see a 5hz "wave-cannon" style thing. It would probably have filled up an entire semi trailer, though.
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Old 7th March 2005, 12:50 AM   #15
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i would have liked to see a couple HUUUUUGEEE bass horns all firing into the sides of a semi trailer....THAT is what i call SPL!
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Old 7th September 2005, 05:19 PM   #16
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am I the only one that remembers the semi truck sub that exploded the truck and did 160db at 9hz or something like that off of 40kw

likely it might do other extremely dangerous things to your body

the mythbusters suck at busting myths they do just about everything wrong
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Old 7th September 2005, 05:25 PM   #17
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Yeah, saw them "bust" the driving with windows down uses more gas then windows up with ac myth.

They used big unaerodynamic SUVs, cranking the ac to the max, and driving at a whopping 45mph. At 75mph there is almost three times the drag.
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Old 7th September 2005, 06:40 PM   #18
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The problem was that they went with Meyer Sound instead of Clair Brothers Audio! When I worked at CBA they were testing 4 or 6 ML18s (dual 18 sub cabinets) outside in the parking lot powered by a host of Crown MA3600VZ (3600W total). They did a 30Hz blast for about 30 seconds and set off every car with an alarm within about 50 feet and it made me feel a little sick to my stomach. I was only outside for 15 seconds because I didn't want to permanently damage my hearing... You'd need some way to focus the low frequency acoustic energy to achieve a high enough SPL to test that theory outside.
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Old 8th September 2005, 09:32 PM   #19
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This is one place where Bag End subs would have been appropriate, since they're EQ'd flat to 8 Hz. Since the output of a single sub is negligable in the lowest octaves, you'd need a pile of them.

They could've built something like a phone booth (or an outhouse), with a number of Adire Tempests on 3 sides, operating as an infinite baffle (the victim goes inside the box).

No doubt Tom Danley could come up with a number of ways to generate appropriate sound levels, and chances are he's already consulted on something like this.

The myth ain't busted until they've tested at 140 dB and the underpants stay white.
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Old 9th September 2005, 11:29 AM   #20
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A very large self loading canon [or a number canon] firing at a rate of 5hz would probably get some 'movements' going,
though the reason for such 'movements' would most likely depend on where the canons were pointing at the time


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