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Old 02-14-2009
 
#1
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Default What if we could control sound like we contro light?

http://www.ted.com/index.php/talks/w...ng_things.html

This guy can make sound travel in only one direction (as opposed to in every direction, which is how we normally experience sound). You need to check it out. It's quite impressive.
 
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Old 02-14-2009
 
#2
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Default Re: What if we could control sound like we contro light?

This is awesome!

Imagine ipods where you can blast up the music as loud as you want without wearing headphones or disturbing anybody else.

Found this in the comments:
Quote:
To give a clue to those wondering that happened to this technology, what Woody failed to mention was its disadvantages. Apparently the sound distortion is around 20%, whilst most speakers are around 1%. This makes it unlikely that it can be used for good quality sound, especially in the lower frequencies. The bass cannot be made loud enough without increasing the ultrasound levels too high.
Still amazing IMO.
 

Last edited by Gradius; 02-14-2009 at 01:05 PM.
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Old 02-14-2009
 
#3
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Default Re: What if we could control sound like we contro light?

I knew that I saw this earlier... Discovery channel or National Geographic.
Awesome thing.
 
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Old 02-14-2009
 
#4
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Default Re: What if we could control sound like we contro light?

Inventing something is very hard, Gradius. Improving it, not so much. He already did the hard work. Now come the rest of us to make improvements. Those disadvantages will probably mean nothing in five or ten years when the technology is perfected.
 
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Old 02-14-2009
 
#5
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Default Re: What if we could control sound like we contro light?

I really can't imagine how would that work with light.
 
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Old 02-14-2009
 
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Default Re: What if we could control sound like we contro light?

I remember seeing a program about this except it was a weaponized variant of this sort of technology. Pretty cool stuff to be sure.
 
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Old 02-14-2009
 
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Default Re: What if we could control sound like we contro light?

While this is awesome, I can see it abused to shit. The first time I heard of this technology was a program on the Discovery Channel, where they installed one of these speakers in front of a vending machine. When you stand in front of the vending machine, you hear the sound of a soda can being opened and poured into a glass, with the assumption that that sound alone would make people want to buy a soda.

In that video, the guy says Sony wants to install these at supermarket checkout lines to blast advertising at the poor customers. How long will it be before someone whacks the speaker with a crowbar? Imagine just walking down the street minding your own damn business and then you hear EAT MCDONALD'S! out of the blue like it's God himself descending from the heavens to give humanity an important message.
 
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Old 02-14-2009
 
#8
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Default Re: What if we could control sound like we contro light?

Oh hell yes. I wantz.
 
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Old 02-14-2009
 
#9
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Default Re: What if we could control sound like we contro light?

VJ, yeah they use something like this to disperse crowds. The system uses super high frequencies shot into mobs and rioters to incapacitate them or make them run.


This is a great invention, but JT has some valid points. This will be easily abused, unfortunately. It can also be used to harm as well.
 
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Old 02-14-2009
 
#10
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Default Re: What if we could control sound like we contro light?

Quote:
Originally Posted by spychi View Post
I really can't imagine how would that work with light.
...
 
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Old 02-14-2009
 
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Default Re: What if we could control sound like we contro light?

Quote:
Originally Posted by p3ngu!n View Post
not that use
 
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Old 02-14-2009
 
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Default Re: What if we could control sound like we contro light?

Quote:
Originally Posted by p3ngu!n View Post
Inventing something is very hard, Gradius. Improving it, not so much. He already did the hard work. Now come the rest of us to make improvements. Those disadvantages will probably mean nothing in five or ten years when the technology is perfected.
I hope that's the case. But it's usually things like this that prevent most of these awesome inventions from coming out to the mass market. Most of Woody's investors got screwed over, for example, as the majority of his inventions didn't pay off. When the problem is that bass cannot be increased without making the ultrasound levels too high, I don't know if it's really going to be fixable with better technology down the road. Also:

Quote:
That's all hogwash, says F. Joseph Pompei of Watertown, Massachusetts, who has a Ph.D. from MIT and is a longtime critic of Norris's proclamations. "There is no way [hypersonic] could be used for music," says Pompei, whose company, Holosonic Research Labs, has its own product, Audio Spotlight. Hypersonic's "audible distortion is 20 to 50 percent. Most loudspeakers are 1 percent. It doesn't hit low notes. The listening experience is absolutely atrocious." Floyd Toole, vice president for acoustics at Harman International, has similar reservations. "It's awfully hard to get anything at low frequencies," says Toole. "It is only useful for speech communications. This is not a hi-fi device. There is lots of distortion. It is a niche product."
Source: http://www.sandiegoreader.com/news/2...ative-returns/

On the other hand, I don't understand the science behind all this, so I'll wait to cast my judgement.

Quote:
Originally Posted by spychi View Post
not that use
What use then?
 
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Old 02-14-2009
 
#13
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Default Re: What if we could control sound like we contro light?

advantage: you can listen to porn without weirding out everyone in the other room
 
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Old 02-15-2009
 
#14
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Default Re: What if we could control sound like we contro light?

Am I the only one who doesn't hear the waterfall? lmfao.

Quote:
Originally Posted by Drakain Zeil View Post
advantage: you can listen to porn without weirding out everyone in the other room
Why the hell would you listen to porn?
 
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Old 02-15-2009
 
#15
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Default Re: What if we could control sound like we contro light?

Quote:
Originally Posted by Meghan View Post
Am I the only one who doesn't hear the waterfall? lmfao.
Nah, he probably didn't point the speaker at a mic. Fail on his part, but I have seen this shit shown and it's pretty sweet.
 
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