This is an odd question

default -- Sun, 05/03/2009 - 22:23

Hey guys, as the subject says, this may be a bit odd.  My friend runs a Haunted House, and he asked me how to get a really deep sound projected into a room (about 10 foot square).  He said he wanted the sound so low that it was more felt than heard.  My suggestion was to get some sort of sound generator to send a signal into the best subwoofer he could find, but I'm not sure if that will be enough.  Any suggestions?

Robert Harley -- Mon, 05/04/2009 - 09:42

You'll need a signal generator to create such low sounds, but then the sound is just a single frequency. You'll also need a subwoofer capable of reproducing high sound-pressure levels at those low frequencies—an expensive proposition.
Incidentally, wildlife researchers have constructed enormous subwoofers to reproduce the sounds that elephants use to communicate over long distances. The frequencies are below 10Hz.

sheepherder -- Mon, 05/04/2009 - 19:50

 DOD has constructed subwoofers  as a non violent means of crowd control and as a non lethal weapon to immobilize. They have done research on the appropriate frequencies to include the one that causes you to lose control of your bowels.

Shenandoah Valley, VA

AVF Moonfly (not verified) -- Tue, 06/23/2009 - 04:31

 Didnt myth busters prove this wasnt possible?

Robert Harley -- Tue, 05/05/2009 - 10:59

Your tax dollars at work.

sheepherder -- Fri, 05/22/2009 - 15:49

Let me give two situations where this is not a waste of tax payer dollars and better than using tear gas or other means.
First US embassy located in a country who doesn't like our policies. Demonstrators are outside are embassy and breach the gate.
Marine guard does not want to provoke the situation so out come the truck with the subs. Protestors hear sounds feel sick and retreat.
Leftist liberal Americans enter US base to protest the DOD using live animals for experiments. You know Rush Limbaugh and his animal rights supporting friends along with HSUS. Rush recently did PSA's for HSUS in favor of mandatory spay neuter.  Again DOD rolls out truck instead of gassing or splitting heads and the only one who is unhappy is Mr Limbaugh who soiled his Hugo Boss slacks.
See Robert works better than tear gas , head splitting, non lethal shotgun rounds or water cannons. Less bad press or the potential for injury.
However the ACLU and the ambulance chasers would still be up in arms.

Shenandoah Valley, VA

Chris Martens -- Fri, 05/22/2009 - 16:38

I feel your somewhat unusual question deserves an equally unusual--though very focused--answer. Here goes.
The aptly named firm Earthquake Sound make an intriguing product that does precisely what you ask; namely, create powerful low bass that, by design, is not only heard but felt in the seat of one's pants (or shoes, or whatever). The product that does this is called the Quake 10.0 Tactile Transducer. To enable customers to get just the right amount of tactile effect for various applications, Earthquake offers systems that can drive one, two, or three full-size Quakes, or four "MiniQuakes."
How powerful is it? Earthquake had a demo where they clamped a Tactile Transducer to a suspended foot-board, and then invited demo attendees to stand on the board when low bass sweep tones were played. I tried it and experienced (literally) vision-blurring, whole-body bass. Yowza! 'Scary, but also fun, and very impressive.
Here's a link to Earthquake's product page for the Quake 10.0 Tactile Transducer:
Chris Martens

Chris Martens
Editor, Perfect Vision 

AVF Moonfly (not verified) -- Tue, 06/23/2009 - 04:37

 If you have the inclination, you could look at installing some kind of IB subwoofer, they are known for going deeper and cleaner that just about any other kind of sub woofer design. Heres a link if it interest you:

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