NYC Police to use sound to control protesters

Archived from groups: rec.audio.pro (More info?)

In article <1m0vi0ta8rf65n0liu3m1s8v6jsq599on6@4ax.com>,
playon <playonATcomcast.net> wrote:

> http://www.truthout.org/docs_04/082704C.shtml


I may be mistaken, but wouldn't this be incredibly easy to block? Earplugs,
anyone? Reflective surfaces in the line of fire? How about a parabolic dish
aimed back at the source?

-Jay
--
x------- Jay Kadis ------- x---- Jay's Attic Studio ------x
x Lecturer, Audio Engineer x Dexter Records x
x CCRMA, Stanford University x http://www.offbeats.com/ x
x-------- http://ccrma-www.stanford.edu/~jay/ ----------x

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In article <jay-334934.12103427082004@news.stanford.edu>,
Jay Kadis <jay@ccrma.stanford.edu> wrote:

> http://www.truthout.org/docs_04/082704C.shtml

the inventor talked about in the article had a booth at AES last year.
--
Digital Services Recording Studios
http://www.digisrvs.com

Archived from groups: rec.audio.pro (More info?)

Heck yes. I always carry a parabolic dish with me. Doesn't everyone? It's
especially helpful when you need to communicate with visitors from outer
space. And the incredulous stares I get while traveling with it don't
bother me anymore.

Jay Kadis wrote:

> In article <1m0vi0ta8rf65n0liu3m1s8v6jsq599on6@4ax.com>,
> playon <playonATcomcast.net> wrote:
>
>> http://www.truthout.org/docs_04/082704C.shtml
>
>
> I may be mistaken, but wouldn't this be incredibly easy to block?
> Earplugs,
> anyone? Reflective surfaces in the line of fire? How about a parabolic
> dish aimed back at the source?
>
> -Jay

Archived from groups: rec.audio.pro (More info?)

In article <z9NXc.7896$NO4.5564@newssvr24.news.prodigy.com>,
Stu R <stu-r@sbcglobal.net> wrote:
>
> Jay Kadis wrote:
>
> > In article <1m0vi0ta8rf65n0liu3m1s8v6jsq599on6@4ax.com>,
> > playon <playonATcomcast.net> wrote:
> >
> >> http://www.truthout.org/docs_04/082704C.shtml
> >
> >
> > I may be mistaken, but wouldn't this be incredibly easy to block?
> > Earplugs,
> > anyone? Reflective surfaces in the line of fire? How about a parabolic
> > dish aimed back at the source?
> >
> > -Jay
>
> Heck yes. I always carry a parabolic dish with me. Doesn't everyone? It's
> especially helpful when you need to communicate with visitors from outer
> space. And the incredulous stares I get while traveling with it don't
> bother me anymore.

Well, if you are actually going to NY to protest you have been forewarned. Have
you ever been to a demonstration? People bring all sorts of tactical apparatus:
helmets, bullhorns, Molotov cocktails, you name it. They're such a zoo that
carrying a parabolic dish would not be as noticable as you might think among the
signs and other paraphernalia.

There are parabolic microphones. Are they also solely for recording
extraterrestrials?

-Jay
--
x------- Jay Kadis ------- x---- Jay's Attic Studio ------x
x Lecturer, Audio Engineer x Dexter Records x
x CCRMA, Stanford University x http://www.offbeats.com/ x
x-------- http://ccrma-www.stanford.edu/~jay/ ----------x

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Jay Kadis wrote:

> In article <z9NXc.7896$NO4.5564@newssvr24.news.prodigy.com>,
> Stu R <stu-r@sbcglobal.net> wrote:
>>
>> Jay Kadis wrote:
Just kidding, Born and raised in NYC. After long military and university
teaching careers, I moved to west Texas. Must be to avoid crowds.  

P.S. Good thinking on the reflector.

>>
>> > In article <1m0vi0ta8rf65n0liu3m1s8v6jsq599on6@4ax.com>,
>> > playon <playonATcomcast.net> wrote:
>> >
>> >> http://www.truthout.org/docs_04/082704C.shtml
>> >
>> >
>> > I may be mistaken, but wouldn't this be incredibly easy to block?
>> > Earplugs,
>> > anyone? Reflective surfaces in the line of fire? How about a
>> > parabolic dish aimed back at the source?
>> >
>> > -Jay
>>
>> Heck yes. I always carry a parabolic dish with me. Doesn't everyone?
>> It's especially helpful when you need to communicate with visitors from
>> outer
>> space. And the incredulous stares I get while traveling with it don't
>> bother me anymore.
>
> Well, if you are actually going to NY to protest you have been forewarned.
> Have
> you ever been to a demonstration? People bring all sorts of tactical
> apparatus:
> helmets, bullhorns, Molotov cocktails, you name it. They're such a zoo
> that carrying a parabolic dish would not be as noticable as you might
> think among the signs and other paraphernalia.
>
> There are parabolic microphones. Are they also solely for recording
> extraterrestrials?
>
> -Jay

Archived from groups: rec.audio.pro (More info?)

"It produces sound in a way that for most people will be a novel
experience, so I think it has potential to create confusion and panic,"

Oh yeah, that helps.

Archived from groups: rec.audio.pro (More info?)

If you know the frequencies of the two ultrasonic carriers, are electronic
countermeasures possible?

Rgds:
Eric
"Ken M" <kenm@cfl.rr.com> wrote in message
news:I2PXc.3506$uN5.897@tornado.tampabay.rr.com...
> "It produces sound in a way that for most people will be a novel
> experience, so I think it has potential to create confusion and panic,"
>
> Oh yeah, that helps.
>

Archived from groups: rec.audio.pro (More info?)

"Stu R" <stu-r@sbcglobal.net> wrote in message
news:_WOXc.7912$3m5.3329@newssvr24.news.prodigy.com...
> Jay Kadis wrote:
>
> > In article <z9NXc.7896$NO4.5564@newssvr24.news.prodigy.com>,
> > Stu R <stu-r@sbcglobal.net> wrote:

> > There are parabolic microphones. Are they also solely for recording
> > extraterrestrials?

Well, that's all I use mine for... i dunno about the rest of you guys.

 
--


Neil Henderson
Saqqara Records
http://www.saqqararecords.com

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I can't help but wonder if that might not be unpredictable, even dangerous.

My guess would be that the device pictured is a very high energy ultra-sound
beam transducer which employs some method of heterodyning to be heard. The
resulting audio spectrum is not very linear and doesn't go down very low,
but the sound can be directed like a wide beam width laser basically.
Problem I would be concerned about is that in order to make something like
that work, you're talking about a lot of energy over a small area...

Any engineers or physicists out there? I don't think they'll blow anyone's
head up like in that old B-movie "Scanners", but they could definitely hurt
somebody.

???


Skler





playon <playonATcomcast.net> wrote in message
news:1m0vi0ta8rf65n0liu3m1s8v6jsq599on6@4ax.com...
> http://www.truthout.org/docs_04/082704C.shtml

Archived from groups: rec.audio.pro (More info?)

If all they're doing is a parabolic dish then it would be a joke really,
wouldn't be very effective, especially as small as the one depicted. Tiny
dish like that would only pass relatively high freqs, say like not much
below 2k? Something like that... :-P


Stu R <stu-r@sbcglobal.net> wrote in message
news:z9NXc.7896$NO4.5564@newssvr24.news.prodigy.com...
> Heck yes. I always carry a parabolic dish with me. Doesn't everyone?
It's
> especially helpful when you need to communicate with visitors from outer
> space. And the incredulous stares I get while traveling with it don't
> bother me anymore.
>
> Jay Kadis wrote:
>
> > In article <1m0vi0ta8rf65n0liu3m1s8v6jsq599on6@4ax.com>,
> > playon <playonATcomcast.net> wrote:
> >
> >> http://www.truthout.org/docs_04/082704C.shtml
> >
> >
> > I may be mistaken, but wouldn't this be incredibly easy to block?
> > Earplugs,
> > anyone? Reflective surfaces in the line of fire? How about a parabolic
> > dish aimed back at the source?
> >
> > -Jay
>

Archived from groups: rec.audio.pro (More info?)

Seems like in that old TV show Man From Uncle, that secret agent guy could
do that, like you could feed a signal back into the beam antenna and make
it blow up or melt or something? Kind of like confusing an AI computer to
the point of self destruction like on Star Trek, ey? :-)



Eric K. Weber <eric-nospam@webermusic.com> wrote in message
news:KdQXc.25$Bk1.6424@news.uswest.net...
> If you know the frequencies of the two ultrasonic carriers, are electronic
> countermeasures possible?
>
> Rgds:
> Eric
> "Ken M" <kenm@cfl.rr.com> wrote in message
> news:I2PXc.3506$uN5.897@tornado.tampabay.rr.com...
> > "It produces sound in a way that for most people will be a novel
> > experience, so I think it has potential to create confusion and panic,"
> >
> > Oh yeah, that helps.
> >
>
>

Archived from groups: rec.audio.pro (More info?)

I'm guessing if they ever used subsonic frequencies with that thing,
ear plugs wouldn't help much.

Al

On Fri, 27 Aug 2004 14:23:44 -0700, Jay Kadis <jay@ccrma.stanford.edu>
wrote:

>In article <z9NXc.7896$NO4.5564@newssvr24.news.prodigy.com>,
> Stu R <stu-r@sbcglobal.net> wrote:
>>
>> Jay Kadis wrote:
>>
>> > In article <1m0vi0ta8rf65n0liu3m1s8v6jsq599on6@4ax.com>,
>> > playon <playonATcomcast.net> wrote:
>> >
>> >> http://www.truthout.org/docs_04/082704C.shtml
>> >
>> >
>> > I may be mistaken, but wouldn't this be incredibly easy to block?
>> > Earplugs,
>> > anyone? Reflective surfaces in the line of fire? How about a parabolic
>> > dish aimed back at the source?
>> >
>> > -Jay
>>
>> Heck yes. I always carry a parabolic dish with me. Doesn't everyone? It's
>> especially helpful when you need to communicate with visitors from outer
>> space. And the incredulous stares I get while traveling with it don't
>> bother me anymore.
>
>Well, if you are actually going to NY to protest you have been forewarned. Have
>you ever been to a demonstration? People bring all sorts of tactical apparatus:
>helmets, bullhorns, Molotov cocktails, you name it. They're such a zoo that
>carrying a parabolic dish would not be as noticable as you might think among the
>signs and other paraphernalia.
>
>There are parabolic microphones. Are they also solely for recording
>extraterrestrials?
>
>-Jay

Archived from groups: rec.audio.pro (More info?)

Latest flash: new technique NY police will use to control protestors. It
also involves peculiar ways of generating sound..

....they're going to beam recordings at them by the Moody Blues.

Peace,
Paul

Archived from groups: rec.audio.pro (More info?)

On Sat, 28 Aug 2004 07:07:20 GMT, "Paul Stamler"
<pstamlerhell@pobox.com> wrote:

>Latest flash: new technique NY police will use to control protestors. It
>also involves peculiar ways of generating sound..
>
>...they're going to beam recordings at them by the Moody Blues.

That would certainly keep me out of the park.

Al

Archived from groups: rec.audio.pro (More info?)

In article <IaWXc.262395$OB3.191680@bgtnsc05-news.ops.worldnet.att.net> pstamlerhell@pobox.com writes:

> ...they're going to beam recordings at them by the Moody Blues.

Disco, I think. These days that would make anyone puke.


--
I'm really Mike Rivers (mrivers@d-and-d.com)
However, until the spam goes away or Hell freezes over,
lots of IP addresses are blocked from this system. If
you e-mail me and it bounces, use your secret decoder ring
and reach me here: double-m-eleven-double-zero at yahoo

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"playon" <playonATcomcast.net> wrote in message
news:7cf0j09bd28tckbi4p3fpjio36q8fcr14c@4ax.com...
> I'm guessing if they ever used subsonic frequencies with that thing,
> ear plugs wouldn't help much.
>
> Al

If they got that low, I doubt standing behind it would help, either. The
problem with infrasonic weapons is that you really want to work them from a
distance and they're not very selective.

Hmmm, reflective surfaces in NYC? Where could we possibly find large
reflective surfaces in the city?

dtk

Archived from groups: rec.audio.pro (More info?)

Don't flame the guy like me that field records a lot with large parabolics.
I do some pretty neat things with parabolic recordings.

They can not reflect a beam back to the source. They direct an infinite
distance to one point or can project one point to an infinite distance. A
surface that reflects directly back at the source is called a wall.

I have heard of the speaker that FM hetrodynes two ultrasonic signals into
an audible signal. Now that it is being used at 4 blocks I believe that
they need an environmental impact statement. The ultrasonic volumes are much
higher than the audible frequency volumes.

I suspect the weapon mode is using ultrasonics to create a infrasound. Loud
infrasound has been used for a weapon for many years and not talked of much,
probably because it is not that hard and is actually low tech. If New York
police uses this in weapon mode I suspect many would feel that is first
blood and force would be justified to break their toy.

Rich Peet


"Stu R" <stu-r@sbcglobal.net> wrote in message
news:z9NXc.7896$NO4.5564@newssvr24.news.prodigy.com...
> Heck yes. I always carry a parabolic dish with me. Doesn't everyone?
It's
> especially helpful when you need to communicate with visitors from outer
> space. And the incredulous stares I get while traveling with it don't
> bother me anymore.
>
> Jay Kadis wrote:
>
> > In article <1m0vi0ta8rf65n0liu3m1s8v6jsq599on6@4ax.com>,
> > playon <playonATcomcast.net> wrote:
> >
> >> http://www.truthout.org/docs_04/082704C.shtml
> >
> >
> > I may be mistaken, but wouldn't this be incredibly easy to block?
> > Earplugs,
> > anyone? Reflective surfaces in the line of fire? How about a parabolic
> > dish aimed back at the source?
> >
> > -Jay
>

Archived from groups: rec.audio.pro (More info?)

In article <znr1093692901k@trad>, mrivers@d-and-d.com (Mike Rivers)
wrote:

> In article <IaWXc.262395$OB3.191680@bgtnsc05-news.ops.worldnet.att.net>
> pstamlerhell@pobox.com writes:
>
> > ...they're going to beam recordings at them by the Moody Blues.
>
> Disco, I think. These days that would make anyone puke.
>
so what your saying Hank, is nothing has really changed since 1974
:-)
George

Archived from groups: rec.audio.pro (More info?)

> >
> >As I recall, the resonant frequency of the human anal sphincter is 7 Hz.
>
> I didn't even know that it could resonate.
>
> AL
>
>
then you have never been with me and my friends camping after a case
or two of Pale Ales:-)
George

Archived from groups: rec.audio.pro (More info?)

On Sat, 28 Aug 2004 19:37:49 GMT, George
<g.p.gleason@worldnet.att.net> wrote:

>
>> >
>> >As I recall, the resonant frequency of the human anal sphincter is 7 Hz.
>>
>> I didn't even know that it could resonate.
>>
>> AL
>>
>>
>then you have never been with me and my friends camping after a case
>or two of Pale Ales:-)

And glad of it, apparently.

Al

Archived from groups: rec.audio.pro (More info?)

On Sat, 28 Aug 2004 04:18:38 -0400, playon wrote
(in article <gff0j0daomgipjk4hur4ad1mq5r3nijer5@4ax.com>):

> Subject: Re: NYC Police to use sound to control protesters
> From: playon <playonATcomcast.net>
> Date: Today 4:18 AM
> Reply-To: playonATcomcast.net
> Newsgroups: rec.audio.pro
>
> On Sat, 28 Aug 2004 07:07:20 GMT, "Paul Stamler"
> <pstamlerhell@pobox.com> wrote:
>
>> Latest flash: new technique NY police will use to control protestors. It
>> also involves peculiar ways of generating sound..
>>
>> ...they're going to beam recordings at them by the Moody Blues.
>
> That would certainly keep me out of the park.
>
> Al


having Ashcroft sing might do it.

Archived from groups: rec.audio.pro (More info?)

On Fri, 27 Aug 2004 23:00:56 GMT, Ken M <kenm@cfl.rr.com> wrote:

> "It produces sound in a way that for most people will be a novel
>experience, so I think it has potential to create confusion and panic,"
>
>Oh yeah, that helps.

My bet is that it uses Doppler Distortion. It caused confusion and
panic in RAP, imagine what will happen in the streets.





Kurt Riemann

Archived from groups: rec.audio.pro (More info?)

>Disco, I think. These days that would make anyone puke.

Yeah, that was in vogue and retro-hip last year. Now it's just old and kitschy
again.


Joe Egan
EMP
Colchester, VT
www.eganmedia.com

Archived from groups: rec.audio.pro (More info?)

On 29 Aug 2004 10:27:04 GMT, eganmedia@aol.com (EganMedia) wrote:

>>Disco, I think. These days that would make anyone puke.
>
>Yeah, that was in vogue and retro-hip last year. Now it's just old and kitschy
>again.
>

Weirdly, people still get up and dance to it on the weekend but hope
that nobody in the office saw them when Monday comes.


Kurt

Archived from groups: rec.audio.pro (More info?)

> >Latest flash: new technique NY police will use to control protestors. It
> >also involves peculiar ways of generating sound..
> >
> >...they're going to beam recordings at them by the Moody Blues.
>
> That would certainly keep me out of the park.
>
> Al


Shoot, that'd make me feel all nostalgic and wanna stay... :-P

I suppose what ever style they chose to play over the damned thing, some
people would dig it and stay and others would run in disgust.
Hmmm.... Demographic crowd control!

Archived from groups: rec.audio.pro (More info?)

Don't remember the patent no. but there's a US Patent with neat drawing &
everything for a very large parabola to be used in warfare.
It's mounted on a truck and has a jet engine at the focal point, apparently
intended to turn people's abdominal and/or thoracic cavity into mush & puke
their guts out.
Not very practical to say the least. How to the guys who operate it keep
from going deaf?



..
>
> I suspect the weapon mode is using ultrasonics to create a infrasound.
Loud
> infrasound has been used for a weapon for many years and not talked of
much,


I'll bet it's just to create audible sound, not infrasound. The guys who are
pioneering & trying to market those things say that the method is poor at
generating low end of audio spectrum, that there's a steep slope from high
end to low end of spectrum. That might be an indication that infra sound
would be even less efficient. ?

Probably trying to freak people out as opposed to make them nauseated, but
who knows. I do have a couple of decades experience providing tech support
for law enforcement & have observed that they become giddy at the prospect
of using high tech toys and like all good consumers, consistently
overestimating the capabilities of a particular high tech gadget. :-)


Skler

Archived from groups: rec.audio.pro (More info?)

Cerion wrote:

> Don't remember the patent no. but there's a US Patent with neat drawing &
> everything for a very large parabola to be used in warfare.
> It's mounted on a truck and has a jet engine at the focal point, apparently
> intended to turn people's abdominal and/or thoracic cavity into mush & puke
> their guts out.

Then there's this:

http://www.arcanemethods.com/KillerHorn.jpg


Bob
--

"Things should be described as simply as possible, but no
simpler."

A. Einstein

Archived from groups: rec.audio.pro (More info?)

On Sun, 29 Aug 2004 23:23:27 -0400, Cerion wrote
(in article <cgu5ub$8n0$1@geraldo.cc.utexas.edu>):

> Subject: Re: NYC Police to use sound to control protesters
> From: "Cerion" <eeeeek@notmail.com>
> Date: Yesterday 11:23 PM
> Newsgroups: rec.audio.pro
>
> Don't remember the patent no. but there's a US Patent with neat drawing &
> everything for a very large parabola to be used in warfare.
> It's mounted on a truck and has a jet engine at the focal point, apparently
> intended to turn people's abdominal and/or thoracic cavity into mush & puke
> their guts out.
> Not very practical to say the least. How to the guys who operate it keep
> from going deaf?
>
>
>
> .
>>
>> I suspect the weapon mode is using ultrasonics to create a infrasound.
> Loud
>> infrasound has been used for a weapon for many years and not talked of
> much,
>
>
> I'll bet it's just to create audible sound, not infrasound. The guys who are
> pioneering & trying to market those things say that the method is poor at
> generating low end of audio spectrum, that there's a steep slope from high
> end to low end of spectrum. That might be an indication that infra sound
> would be even less efficient. ?
>
> Probably trying to freak people out as opposed to make them nauseated, but
> who knows. I do have a couple of decades experience providing tech support
> for law enforcement & have observed that they become giddy at the prospect
> of using high tech toys and like all good consumers, consistently
> overestimating the capabilities of a particular high tech gadget. :-)
>
>
> Skler

I heard somewhere that "Manifold Technology" was originally developed for
millitary use. Though the only use i remember was the US marines playing loud
music at Noriega till he came out of the presidential palace.


There is word that they have been blasting Iraqi POWs with "Heavy Metal" ,
day and night, to 'soften them up for interogation".


The British used to have these massive sound systems in cargo planes, in the
1950s. I saw this in a Book. These planes flew above the clouds and would
blast "program" at Afghan tribesmen in ordrer to 'calm' them.

Archived from groups: rec.audio.pro (More info?)

In article <are.you.crazy-187770.14551327082004@library.airnews.net>,
John <are.you.crazy@sendmenomail.com> wrote:
>In article <jay-334934.12103427082004@news.stanford.edu>,
> Jay Kadis <jay@ccrma.stanford.edu> wrote:
>
>> http://www.truthout.org/docs_04/082704C.shtml
>
>the inventor talked about in the article had a booth at AES last year.

Doing what? I've never seen a commercial system that used ultrasonics
beat together before.
--scott

--
"C'est un Nagra. C'est suisse, et tres, tres precis."

Archived from groups: rec.audio.pro (More info?)

"Bob Cain" <arcane@arcanemethods.com> wrote in message
news:cguj1k01j2m@enews3.newsguy.com...
>
> Then there's this:
>
> http://www.arcanemethods.com/KillerHorn.jpg

I wonder if you can rent those for festivals?

dtk

Archived from groups: rec.audio.pro (More info?)

dt king wrote:

> "Bob Cain" <arcane@arcanemethods.com> wrote in message
> news:cguj1k01j2m@enews3.newsguy.com...
>
>>Then there's this:
>>
>>http://www.arcanemethods.com/KillerHorn.jpg
>
>
> I wonder if you can rent those for festivals?

Nah, they're made for testing Doppler distortion.


Bob
--

"Things should be described as simply as possible, but no
simpler."

A. Einstein

Archived from groups: rec.audio.pro (More info?)

My understanding is the system would use sub-sonic and ultra-sonic
frequencies (frequencies that cause extreme discomfort, nausea, and possibly
death by interrupting the body's natural rhythms) at appropriate amplitudes
to convince a mob that it's not worth attempts at persisting. The
perpetrator receiving the assault would not hear the sound, but they would
feel ill, initially. If they continue, they will soon be unable to retain
control of their bodily functions and will soon pass out, black out, or
seize.

That's just my understanding of the technology's intentions, though. PopSci
does a lot of articles about less-than-lethal weaponry. SonicAssault is
just one of many techniques being refined as of late.


"playon" <playonATcomcast.net> wrote in message
news:1m0vi0ta8rf65n0liu3m1s8v6jsq599on6@4ax.com...
> http://www.truthout.org/docs_04/082704C.shtml

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Ken M <kenm@cfl.rr.com> wrote in message news:<I2PXc.3506$uN5.897@tornado.tampabay.rr.com>...
> "It produces sound in a way that for most people will be a novel
> experience, so I think it has potential to create confusion and panic,"
>


They said that about my last band.

Archived from groups: rec.audio.pro (More info?)

Ty Ford <tyreeford@comcast.net> wrote in message news:<E4ydnWh4WL2-PK3cRVn-qg@comcast.com>...

>
> As I recall, the resonant frequency of the human anal sphincter is 7 Hz.


14 Hz. But who's counting?

Archived from groups: rec.audio.pro (More info?)

It's pie in the sky stuff as compared to the practical audio knob twirling
we do, but it's real enough...
The guys have a web site even: http://www.atcsd.com/


And of course it's a big deal because it's been published in the ultimate
medium of scientific peer review:
http://popularmechanics.com/technology/audio/1997/6/Hyp...
html



Seriously though, if the technology develops quite a bit more, no tellin'
what kinds of cool practical applications it might have, or it could fade
into obscurity with no practical or popular applications at all. But riot
control? I don't think they're gonna make a living selling it for such a
ridiculous application. :-)



Oh wait, here's an even better idea employing some kind of acoustics and
heterodyning: http://www.braintuner.com/bodyvibes.htm



Skler



> >> http://www.truthout.org/docs_04/082704C.shtml
> >
> >the inventor talked about in the article had a booth at AES last year.
>
> Doing what? I've never seen a commercial system that used ultrasonics
> beat together before.
> --scott
>
> --
> "C'est un Nagra. C'est suisse, et tres, tres precis."

Archived from groups: rec.audio.pro (More info?)

On Mon, 30 Aug 2004 21:52:13 -0500, "Cerion" <eeeeek@notmail.com>
wrote:

>
>Seriously though, if the technology develops quite a bit more, no tellin'
>what kinds of cool practical applications it might have, or it could fade
>into obscurity with no practical or popular applications at all. But riot
>control? I don't think they're gonna make a living selling it for such a
>ridiculous application. :-)

Hey security and weapons budgets have never been higher... it's all in
the marketing.

Al

Archived from groups: rec.audio.pro (More info?)

> >
> > Then there's this:
> >
> > http://www.arcanemethods.com/KillerHorn.jpg
>


Coooool!!! :-)

Archived from groups: rec.audio.pro (More info?)

Scott Dorsey schrieb:
>
....
>
> Doing what? I've never seen a commercial system that used ultrasonics
> beat together before.

<http://www.sennheiser.com/sennheiser/icm_eng.nsf/root/p...;

HTH

Reinhard

Archived from groups: rec.audio.pro (More info?)

>
> Then there's this:
>
> http://www.arcanemethods.com/KillerHorn.jpg



I have an obscure electronic music CD with some curious black & white photos
on the sleeve. Big parabolas fashioned out of concrete, one like 20 meters
high! Turns out they were parabolic reflectors on the coast of England used
to detect approaching aircraft during World War II!

Dang, I lost the CD.... :-o



Skler

Archived from groups: rec.audio.pro (More info?)

Cerion wrote:

>>Then there's this:
>>
>>http://www.arcanemethods.com/KillerHorn.jpg
>
>
>
>
> I have an obscure electronic music CD with some curious black & white photos
> on the sleeve. Big parabolas fashioned out of concrete, one like 20 meters
> high! Turns out they were parabolic reflectors on the coast of England used
> to detect approaching aircraft during World War II!
>
> Dang, I lost the CD.... :-o

Have no fear:

http://www.arcanemethods.com/Waalsdorp1.jpg

http://www.arcanemethods.com/Waalsdorp2.jpg

I know of one acoustic experimentalist, who shall go
nameless, that I would dearly love to sit in that at some
small distance from Killerhorn to see if Doppler distortion
can be detected.


Bob
--

"Things should be described as simply as possible, but no
simpler."

A. Einstein

Archived from groups: rec.audio.pro (More info?)

In article <a7433f7e.0408301618.17cc7609@posting.google.com>,
bross@berklee.net (Bob Ross) wrote:

> Ty Ford <tyreeford@comcast.net> wrote in message
> news:<E4ydnWh4WL2-PK3cRVn-qg@comcast.com>...
>
> >
> > As I recall, the resonant frequency of the human anal sphincter is 7 Hz.
>
>
> 14 Hz. But who's counting?

my RTA shows it at about 160
(_o_)

G

Archived from groups: rec.audio.pro (More info?)

In article <g.p.gleason-2CB4D4.20251930082004@netnews.worldnet.att.net> g.p.gleason@worldnet.att.net writes:

> > > As I recall, the resonant frequency of the human anal sphincter is 7 Hz.
> > 14 Hz. But who's counting?
>
> my RTA shows it at about 160
> (_o_)

Is that coming or going?

--
I'm really Mike Rivers (mrivers@d-and-d.com)
However, until the spam goes away or Hell freezes over,
lots of IP addresses are blocked from this system. If
you e-mail me and it bounces, use your secret decoder ring
and reach me here: double-m-eleven-double-zero at yahoo

Archived from groups: rec.audio.pro (More info?)

In article <kz%Xc.106102$TI1.33217@attbi_s52>,
"Rich Peet" <RichPeet@comcast.net> wrote:

> Don't flame the guy like me that field records a lot with large parabolics.
> I do some pretty neat things with parabolic recordings.
>
> They can not reflect a beam back to the source. They direct an infinite
> distance to one point or can project one point to an infinite distance. A
> surface that reflects directly back at the source is called a wall.
>

Of course, you're right. And flat surfaces are much more useful at a
demonstration: you can write on them!

-Jay
--
x------- Jay Kadis ------- x---- Jay's Attic Studio ------x
x Lecturer, Audio Engineer x Dexter Records x
x CCRMA, Stanford University x http://www.offbeats.com/ x
x-------- http://ccrma-www.stanford.edu/~jay/ ----------x

Archived from groups: rec.audio.pro (More info?)

playon wrote:

> I'm guessing if they ever used subsonic frequencies with that thing,
> ear plugs wouldn't help much.

Either really big earplugs or a butt plug might help.

--
ha

Archived from groups: rec.audio.pro (More info?)

walkinay@thegrid.net (hank alrich) wrote in message news:<1gjcnvj.1l9fkz1zddbxrN%walkinay@thegrid.net>...
> playon wrote:
>
> > I'm guessing if they ever used subsonic frequencies with that thing,
> > ear plugs wouldn't help much.
>
> Either really big earplugs or a butt plug might help.

Pampers. Hurled back at the oppressors when, uh, 'filled'.

Mikey Wozniak
Nova Music Productions
This sig is haiku

Archived from groups: rec.audio.pro (More info?)

> Hey security and weapons budgets have never been higher... it's all in
> the marketing.
>
> Al


Yeah, a barrel of monkeys all the way around!

Maybe some Chinese factory will copy those things and we'll all be able to
buy our own personal riot control sound beams at Wallmart for $29.99...

Skrl

Archived from groups: rec.audio.pro (More info?)

> >
> > I have an obscure electronic music CD with some curious black & white
photos
> > on the sleeve. Big parabolas fashioned out of concrete, one like 20
meters
> > high! Turns out they were parabolic reflectors on the coast of England
used
> > to detect approaching aircraft during World War II!
> >
> > Dang, I lost the CD.... :-o
>
> Have no fear:
>
> http://www.arcanemethods.com/Waalsdorp1.jpg
>
> http://www.arcanemethods.com/Waalsdorp2.jpg
>
> I know of one acoustic experimentalist, who shall go
> nameless, that I would dearly love to sit in that at some
> small distance from Killerhorn to see if Doppler distortion
> can be detected.
>
>
> Bob


Oh, I found those darned things on the web and the one on the CD sleeve
were in Denge, Kent (England) & built during World War I (not WWII).
Pretty puzzling when I first saw the photos as they were from the back sides
of those things and it was hard to tell how big they were or what the heck
they were for. :-P

One web site refers to them as "concrete ears". :-)

Skler

Archived from groups: rec.audio.pro (More info?)

> Have no fear:
>
> http://www.arcanemethods.com/Waalsdorp1.jpg
>
> http://www.arcanemethods.com/Waalsdorp2.jpg
>


Oh man, those are choice photos! :-)

Archived from groups: rec.audio.pro (More info?)

On Tue, 31 Aug 2004 06:09:27 -0400, Mike Rivers wrote
(in article <znr1093913398k@trad>):

> ubject: Re: NYC Police to use sound to control protesters
> From: mrivers@d-and-d.com (Mike Rivers)
> Date: Yesterday 6:09 AM
> Reply-To: mrivers@d-and-d.com
> Newsgroups: rec.audio.pro
>
>
> In article <g.p.gleason-2CB4D4.20251930082004@netnews.worldnet.att.net>
> g.p.gleason@worldnet.att.net writes:
>
>>>> As I recall, the resonant frequency of the human anal sphincter is 7 Hz.
>>> 14 Hz. But who's counting?
>>
>> my RTA shows it at about 160
>> (_o_)
>
> Is that coming or going?


Is that with the accelerator card upgrade?