tookatooka
716 posts
Oct 30, 2009
9:02 AM
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I had to use a London Transport bus the other day. Unfortunately, at the same time that the local schoolkids turned out. A number of noisey kids got on the bus and some of the young girls had their mobile phones on blaring out that tinny pop music.
I delved into my rucksack, pulled out my battery powered Roland MicroCube, my mic and harp, cranked up the volume, and boy did I give them something to think about.
As I said, It's a daydream but one of these days.......
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Last Edited by on Oct 30, 2009 9:03 AM
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Tuckster
249 posts
Oct 30, 2009
10:14 AM
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They would probably arrest you as a potential child molester. LOL
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scrybe314
23 posts
Oct 31, 2009
1:36 AM
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This needs to happen, tookatooka. You should film it, especially the reactions. I've had the pleasure of pulling off something like that, except I went acoustic. The Micro Cube should add plenty of gusto, methinks...
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sopwithcamels266
226 posts
Oct 31, 2009
4:14 AM
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Tookatooka: The reality is all that would do is fuel them. That is no way to go about it ha ha.
Welcome to the real world. You need to get out more.
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Hobostubs Ashlock
76 posts
Oct 31, 2009
4:18 AM
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Pass the hat and take there lunch money lol Happy Halloween the season of the witch BOOOOOOOOOOOOOO LOL LOL LOL
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Delta Dirt
18 posts
Oct 31, 2009
7:00 PM
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Beats the hell out of having to listen to rap music at at every stop light , intersection, parking lot or inside your own home with traffic passing in front at all times of the day. And i live in the country!
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ZackPomerleau
431 posts
Oct 31, 2009
7:32 PM
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Sop, I've done stuff like that, doesn't fuel them.
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Oisin
372 posts
Oct 31, 2009
9:27 PM
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Hey Tooka if you played some of that fecking awful beatboxing they would have loved it...you know what I mean...just go eeee aaaawww through the harp in time to the beat. In my humble opinion it sounds terrible but I know my 11 year old loves it.
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nacoran
303 posts
Oct 31, 2009
11:29 PM
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Oisin- I've heard good beatboxers. I've heard good harmonica players. I'm not sure what I've heard is both, so maybe it's possible.
Tooka- What you need is a jar of harmonicas. At about $2 a piece you can get a bunch of C harps. Play a mean riff and then hand each kid a harp of their own, maybe rip a CD of some public domain blues for them too. If you can't beat them, get them to join you.
http://www.harmonicastore.com/product/48-colored-kids-party-harmonicas.html
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Andrew
703 posts
Nov 01, 2009
4:52 AM
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If I'm on that bus, I'll whup ya upside the head with the book I'll be trying to read!
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Bollocks, Wiglaf!
Last Edited by on Nov 01, 2009 4:53 AM
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Aussiesucker
416 posts
Nov 01, 2009
3:48 PM
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Delta Dirt.> am firmly on the same page as you in regard to rap. What I find excessive is 'doof doof' belting out from cars worth $50 with $5000 sound systems & $1000 chrome wheels. Also noisy neighbours belting out the same 'doof doof' anytime but especially at 3am..
I don't believe I was dreaming but I once found reference on the internet to a fantastic product that was able to beam sound by lazer to any hard surface even a considerable distance away. The sound could not be heard at the source and only be heard at the destination. I want one of those machines so I can fiendishly deliver sounds through my neighbours open windows. Sounds like a crying baby, a steam train, ghosts, fire alarms, mobile phone would be really nice at 3am, 4am & 5am! Wouldn't use it to deliver harmonica sounds as it might be a dead giveaway as to the source.
Am I dreaming? I am unable to find this fantastic product again no matter how hard I search. Perhaps it's too good to be true or it's a secret CIA weapon? And if I was dreaming -well someone better hurry up and invent one.
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Andrew
707 posts
Nov 01, 2009
4:32 PM
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Aussie, I think you may be confusing it with its opposite - there's a listening device where you point a laser at a window and the vibrations of the window (due to the noises inside the room) phase-modulate the reflected laser beam, which is then decoded after it has been reflected back.
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Kinda hot in these rhinos!
Last Edited by on Nov 01, 2009 4:33 PM
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KeithE
43 posts
Nov 01, 2009
6:47 PM
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Maybe you're thinking of "HyperSonic Sound"?
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nacoran
307 posts
Nov 01, 2009
10:48 PM
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Aussie- You weren't dreaming. There are a few weird sound technologies out there. One is the laser microphone system that reads the vibrations in a distant object and recreates it as sound. The Catholic Church supposedly went so far as to make sure that the room where the Cardinals met to select the new Pope had heavy curtains over the windows so that no one could eavesdrop on the process.
Hypersonic sound creates a highly focused beam of sound that doesn't scatter like normal sound (sort of like a sound laser) so that it can be heard at great distances or even be made to appear to be originating from an object. It's been turned into a less than lethal weapon system called LRAD (Long Range Acoustic Device).
http://en.wikipedia.org/wiki/Sound_from_ultrasound
There is also a technology referred to as the 'Voice of God' which military may or may not have developed that uses microwaves to resonate your skull so you hear voices in your head.
http://www.wired.com/dangerroom/2007/12/the-voice-of-go/
There are also, of course, cellphone jammers Tooka could use, although they aren't legal in every country. If he wants to stay strictly on this side of the law and he only has a couple hundred dollars to spare, instead of thousands, he could get some of those Bose white noise headphones. There are actually two kinds of noise called white noise. One is just a low grade hiss that masks background noise. The good stuff actually detects the incoming sound and generates the opposite wavelength and cancels the noise out. I've tried the Bose headphones at their store at the mall. They are big over ear headphones that just block some of the noise, but then you flip the switch and it's like magic. It cancels out all sorts of background stuff.
Bose apparently also makes shock absorbers for cars that operate using sound, and some new refrigeration systems use sound.
Weird stuff.
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Andrew
709 posts
Nov 02, 2009
1:47 AM
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"the laser microphone system that reads the vibrations in a distant object and recreates it as sound."
Yes, that's what I was talking about.
"Hypersonic sound creates a highly focused beam of sound that doesn't scatter like normal sound".
Kind of, but note, it's sound, not laser.
Basically, high frequencies diffuse less than low frequencies, so they can be focussed by a good enough speaker system. You can observe this effect with an ordinary hifi - it's the reason why you only use one bass bin - bass isn't directional, so there's no real need for stereo sub-bass. On the other hand, high frequencies attenuate far more rapidly (things like frequency of oscillation vs the momentum of an air molecule will limit the top end)- it's why when a boom boom car goes by or when someone's playing music in the next room, all you can hear is the bass. My guess is that it makes for a very inefficient weapon.
"There is also a technology referred to as the 'Voice of God' which military may or may not have developed that uses microwaves to resonate your skull so you hear voices in your head."
Excellent (LOL)! I'll read the link later. Sounds a bit like the 1960s LSD experiments to me! Except that now the military are mainly fighting against people who already have the voice of God in their heads, or so they fear, and of course God is America's property! Let me guess, the voice of God will be in Arabic, and he'll say "You know, that George W Bush, he was an under-rated guy, really. He loved his dad!"
"Bose white noise headphones. There are actually two kinds of noise called white noise."
That's news to me. Noise-cancelling headphones are just that - they have a little microphone in them and the signal they pick up from the external world is fed back into your phones with its phase reversed and mixed with what you are actually listening to, so that you hear external noises far less. They are typically used on noisy public transport so you can enjoy quiet music better. I don't think white noise comes into it at all.
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Kinda hot in these rhinos!
Last Edited by on Nov 02, 2009 1:49 AM
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tookatooka
725 posts
Nov 02, 2009
4:03 AM
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This is turning into an interesting thread about sound. I have two items to offer. The first is, does anyone remember the case of about twenty years ago, of the horse racing fixers who used binoculars fitted with a high frequency speaker fitted into one of the binocular tubes, which emitted ultrasonic sound to knobble a horse?
Secondly there was the case of the American scientists who developed a LRAD (Long Range Acoustic Device) which sent out streams of sound waves which interfered with the organs of the body. It was said to relax the sphincter muscles in a crowd of anti Vietnam demonstrators who just shit themselves. Don't know how true that is but wouldn't it be great to find what frequency that was and feed it through the harp amp at the next gig.
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Andrew
710 posts
Nov 02, 2009
5:50 AM
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"does anyone remember the case of about twenty years ago, of the horse racing fixers who used binoculars fitted with a high frequency speaker fitted into one of the binocular tubes, which emitted ultrasonic sound to knobble a horse?"
This is just losers' paranoia. Or do you think no-one noticed the 3kW generator working away beside the spectator with the mysterious cables running up his trouser leg to the binoculars which were the size of a house because of the ultrasonic transducer and sound focusser embedded in them? I think they only gave up using sugar lumps in the horse-knobbling fraternity 2 years ago!
"Secondly there was the case of the American scientists who developed a LRAD (Long Range Acoustic Device) which sent out streams of sound waves which interfered with the organs of the body. It was said to relax the sphincter muscles in a crowd of anti Vietnam demonstrators who just shit themselves. Don't know how true that is but wouldn't it be great to find what frequency that was and feed it through the harp amp at the next gig."
No, you saw it on South Park (I've already embedded the code here once!). It's all very well to discuss the theoretical possibility of these devices, but some of them will need unfeasible amounts of power.
I've got a very faint memory of an old TV ad for Memorex cassette tape, and the advert showed you how the tape was so good you could smash a wine-glass with the sound. It only emerged after the advert had run its course that the sound levels they used would have drilled holes in concrete!
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Kinda hot in these rhinos!
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Andrew
711 posts
Nov 02, 2009
5:58 AM
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Mr Verylong, your link says:
"They're loudhailers...It's very effective up to 1,000 metres and excruciating if you get within 100 to 200 metres if it's at full power. It would give you more or less permanent hearing damage."
There aren't really any surprises here. Also it begs the questionn, what if the pirates wear ear-defenders? My brother was in the air-force. There are ways of protecting yourself from loud noises.
It will probably work best if it can make your sinuses vibrate.
If a different system gave the pirates physical damage, then standard weapons might be more cost-effective.
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Kinda hot in these rhinos!
Last Edited by on Nov 02, 2009 6:29 AM
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nacoran
308 posts
Nov 02, 2009
11:29 AM
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""Bose white noise headphones. There are actually two kinds of noise called white noise."
That's news to me. Noise-cancelling headphones are just that - they have a little microphone in them and the signal they pick up from the external world is fed back into your phones with its phase reversed and mixed with what you are actually listening to, so that you hear external noises far less. They are typically used on noisy public transport so you can enjoy quiet music better. I don't think white noise comes into it at all."
The Bose headphones use the good stuff. Lots of products try to market themselves as white noise generators, trying to confuse the consumer. The lower tech stuff can still be useful, but it just plays background noise to mask sounds. I've seen them used in small offices where people in one office don't want people in the next room to hear what is going on. I do basically the same thing in my apartment at night by turning on a fan. It creates enough background hiss so I don't hear my neighbors snoring or getting up to pee.
Some other cool things sound can do include the famous shattering a while glass by matching the pitch it vibrates at. Mythbusters did a neat episode confirming that. There are also these bowls (I think they are copper) that you put water in. You rub the sides of the bowl and set up a frequency that gets the water to start hissing. It looks like it's a carbonated drink until you stop rubbing it. Some buildings have strange acoustics where you can whisper on one side of the room and be heard in a specific spot on the far side of the room. The Boston Science Museum has to parabolic dishes set up that let you talk to a friend across the large room, and of course there is the shoe string telephone.
And that's all before you get into the weird world of musical instruments. Here's a fun site for anyone who hasn't checked it out before:
http://www.oddmusic.com/gallery/
I particularly like the Bazantar and the Daxaphones.
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MrVerylongusername
599 posts
Nov 02, 2009
11:36 AM
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Actually Andrew it can cause also cause physical pain disorientation, nausea and temporary blindness. Sounds pretty nasty to me. Just google non lethal acoustic weaponry and you'll see just how much military investment is going into systems like these.
Last Edited by on Nov 02, 2009 11:56 AM
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Andrew
714 posts
Nov 02, 2009
12:00 PM
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I take this seriously really, mrV, except that military research does make me feel contempt for the people involved. Flechettes were the last thing I sneered at.
Actually, flechettes have been around since WWI, I just discovered. Maybe I was thinking of this:
http://en.wikipedia.org/wiki/SCMITR
Except that I heard a military adviser on the radio who described modern flechettes as little plastic arrows a centimeter or so long which penetrated the flesh and couldn't be removed and incapacitated the victim. Their flexibility means they can penetrate he gaps in "chainmail" or other porous body armour.
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Kinda hot in these rhinos!
Last Edited by on Nov 02, 2009 12:19 PM
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Andrew
716 posts
Nov 02, 2009
12:13 PM
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Nacoran, the definition of white noise (there is only one type) is pretty much what you can read in Wiki: -
"White noise is a random signal (or process) with a flat power spectral density." In other words, a hiss.
http://en.wikipedia.org/wiki/White_noise
It will mask sounds that are quieter than it.
It can be proven that our ears are just about sensitive enough to hear the air molecules jostling. This jostling creates white noise which masks quieter sounds. Therefore it would be pointless for our ears to be able to hear anything quieter than the jostling of air molecules.
Noise cancelling headphones cancel (external) noise, they don't mask it. They have nothing to do with white noise. How could you listen to music that was mixed with enough hiss to mask external sounds? You couldn't.
http://www.audioreview.com/cat/headphones-home-audio/headphones/bose/acoustic-noise-cancelling-headset/PRD_125575_2750crx.aspx
http://www.windowseatblog.com/2009/06/bose-noise-canceling-headphones-worth-price
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Kinda hot in these rhinos!
Last Edited by on Nov 02, 2009 12:26 PM
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nacoran
311 posts
Nov 02, 2009
2:36 PM
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Andrew- I understand the difference between the two techniques. I've heard noise cancellation referred to as white noise. Maybe it was not the correct term for it, but it was used often enough so that I've had to explain the difference to people. That's why I explained each term separately.
As for flechettes, again, it may be a matter of who you ask. Yes, flechettes can be a humble ammunition, but when you really see military types eyes lighting up they are usually thinking about the sci-fi idea of orbital flechettes, the idea of putting things in space that can stay in orbit until they are needed and then rain down on an enemy with vast kinetic energy.
I personally think we should rain down broken harmonicas on our enemies, harps that only play the IV and V chords, but never the I. Once they are stuck playing a song that never ends we don't have to worry about them anymore.
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Delta Dirt
27 posts
Nov 02, 2009
2:56 PM
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Hey Aussiesucker your alright with me mate. Me thinks we have to deal with a lot of the same ignorance. My new tecnology thinga ma jig yall talk about comes in 230 grains.
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