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Making It Loud?
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Ron Hubbard
science forum addict


Joined: 17 May 2005
Posts: 55

PostPosted: Thu Mar 24, 2005 10:04 pm    Post subject: Re: Making It Loud? Reply with quote

"Roger Bagula" <rlbagulatftn@yahoo.com> wrote in message
news:FBX_d.25692$OU1.116@newssvr21.news.prodigy.com...
Quote:
Use a drum :
make the sound hit a drum diaphragm.
( drum diaphragms are nice because you can put particles on them
and detect the harmonic shape of the sound.)
Another alternative is to make it resonant an organ pipe.
It depends on what kind of harmonics you want to set,
doesn't it?
The b filter takes out vortices as I understand it that are set by
"b"'s
and "p"'s that mess up microphones by giving popping noises.
I thought you were having troubles getting your sounds recorded
due to turbulance produced by your method.

Hi, Roger;

I think you kinda have the wrong idea. I"m not trying to record
anything; I just want to create a high intensity pulse of 15 kHz sound.
Technically, that's ultrasound. but why quibble.

But by itself, a magnetostrictive rod or ring-- no matter how hard
driven-- won't produce much audible sound all by itself anymore than a
bare piezoceramic element; there needs to
be a way to couple the magnetostrictive element to the air. It's
possible (I guess...) to solder or braze a magnetostrictive rod to a
thin steel diaphragm, but how do you do that to a *ring* of
nickel, monel, or whatever magnetostrictive metal I choose?

I had once built a "sonic screwdriver" that was a masterpiece of
electronics and sonic engineering, that could turn screws just by using
sound waves alone. The problem was that it took about 143 dB of sound to
for it to work, so it was a bit annoying to use.<g> Moving the
frequency up to the near ultrasonic range cuts down that problem but now
I need to design a better transducer. Magnetostrictive materials have
several advantages over piezo elements, but there are a few
design problems that are unique to using such elements

Ron
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The Ghost
science forum Guru Wannabe


Joined: 24 Mar 2005
Posts: 115

PostPosted: Thu Mar 24, 2005 10:04 pm    Post subject: Re: Nested Vectors and Indexing Reply with quote

John Sullivan <john@yddraiggoch.demon.co.uk> wrote in
news:1hze2J4uIuGCFAXF@yddraiggoch.demon.co.uk:

Quote:
Can you two children take this mutual trading of insults to email and
get it out of the newsgroup, please?


In message <Xns9604B37188366theghosthotmailcom@140.99.99.130>, The Ghost
theghost@sbcglobal.net> writes
Bob Cain <arcane@arcanemethods.com> wrote in
news:cvc9go02nut@enews2.newsguy.com:


http://www.blogography.com/archives/2003/10/who_asked_you_b.html
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John Sullivan
science forum beginner


Joined: 24 Mar 2005
Posts: 1

PostPosted: Thu Mar 24, 2005 10:04 pm    Post subject: Re: Nested Vectors and Indexing Reply with quote

Can you two children take this mutual trading of insults to email and
get it out of the newsgroup, please?


In message <Xns9604B37188366theghosthotmailcom@140.99.99.130>, The Ghost
<theghost@sbcglobal.net> writes
Quote:
Bob Cain <arcane@arcanemethods.com> wrote in
news:cvc9go02nut@enews2.newsguy.com:

--
John Sullivan
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The Ghost
science forum Guru Wannabe


Joined: 24 Mar 2005
Posts: 115

PostPosted: Thu Mar 24, 2005 10:04 pm    Post subject: Re: Nested Vectors and Indexing Reply with quote

Bob Cain <arcane@arcanemethods.com> wrote in
news:cvc9go02nut@enews2.newsguy.com:

Quote:


The Ghost wrote:

The fact that the "actual" question that you asked didn't "seem" to
have been addressed before is irrelevant.

Oh. Point us, then, toward an answer in any text or in any
paper to the question of what the relationship is between
the pressure at a point and the velocity of particles about
that point in a plane wave.

Acoustics, Leo Beranek, McGraw-Hill, 1955, pg 35, Section 2.5. Freely
Traveling Plane Wave. Specific Acoustic Impedance Zs=p/u where p is the
pressure and u is the particle velocity.


Quote:
The answer to the question you asked
involved a straight-forward application/solution of the partial
differential equation for one-dimensional wave propagation in air
with appropriate boundary conditions and for a specific forcing
function.

If it was all so trivial, why did the solution defy you?

The solution did not defy me. I had the solution all along. However,
given the pile of insults that you have bestowed upon me over the years,
and the contempt that you have for me, the day I give you any help will be
the day after hell freezes.


Quote:
The real question to which you dishonestly refer and the
approximate answers to it proceed from the plane wave
solution to the wave equation. It wasn't necessasary to
solve that to formulate and solve the actual problem at
hand. You know that and are being intentionally dishonest
in your stalking of my usenet presence.

Your comments regarding the plane wave solution are nonsense. Furthermore,
if you believe that I am stalking your usenet presence, then consider it
payback. You have been stalking me for four years, and it's time for
someone to say enough is enough and knock your off your high horse. The
thing that disgusts me the most about you is that upi judge and condemn
others for the very behavior that you, yourself repeatedly exhibit. So keep
on judging and condemning others and I will be there on occasion and as
time permits to point out your gross hypocrisy.



Quote:
You, as Ghost or as Gary Sokolich, are a total fraud and
utterly insane. With this note, you've seen my last word in
response to you. Stalk away, dipshit, I now have you
globally kill filed.


You obviously don't have any mirrors in your house because if you did you
would see the reflection of someone who is the real fraud, the one who is
really insane, the one who is the real stalker and the one who is the real
dipshit.


Quote:
P.S. Your bumbling, rudimentary and wholly inadequate
attempt at answering a DSP question recently was truly funny.

Perhaps my suggestion was bubling, rudimentary and inadequate. You now
condemn what I suggested after the fact, but at the time you suggested
nothing. In keeping with your MO, you critize others but you fail to offer
a constructive alternative.
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dale1
science forum beginner


Joined: 24 Mar 2005
Posts: 1

PostPosted: Thu Mar 24, 2005 10:04 pm    Post subject: Re: Multi track recording software? Reply with quote

the ghost that haunts in bad taste
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Porky
science forum beginner


Joined: 25 Mar 2005
Posts: 41

PostPosted: Thu Mar 24, 2005 10:04 pm    Post subject: Re: Multi track recording software? Reply with quote

"dale" <dallen@frognet.net> wrote in message
news:1108525508.751135.284780@f14g2000cwb.googlegroups.com...
Quote:
the ghost that haunts in bad taste

And it looks like Bob was right, this spector only appears when someone

mentions his name.
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Bob Cain
science forum Guru


Joined: 07 Jun 2005
Posts: 360

PostPosted: Thu Mar 24, 2005 10:04 pm    Post subject: Re: Multi track recording software? Reply with quote

The Ghost wrote:
Quote:
Bob Cain <arcane@arcanemethods.com> wrote in
news:curg3902r1r@enews2.newsguy.com:



Porky wrote:


*LOL* Ya think the ghost thinks we've progressed? :-)

The Ghost is an automoton, an Eliza like trolling program
put together by Gary Sokolich, an unemployed acoustics
clerk, between his bouts of compulsive masturbation. It has
a bot function now that stalks me by monitoring, via Google,
all of my usenet postings in any group to interject its venom.

I was really surprised when it showed up the other day in
comp.apl but I guess I shouldn't be surprised at anything
arriving from that direction other than sanity.


Bob



Your previous postings pretty much document the severity and extent of your
mental illness, so the above revelation should be of no surprise to anyone.
Just how long have you been peeping in windows watching middle aged men
masturbate. Have you also been taking pictures and/or videos.

Nah, it was just a good guess. Thanks for the honesty of
affirming it.


Bob
--

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

A. Einstein
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Bob Cain
science forum Guru


Joined: 07 Jun 2005
Posts: 360

PostPosted: Thu Mar 24, 2005 10:04 pm    Post subject: Re: Multi track recording software? Reply with quote

Porky wrote:
Quote:
"dale" <dallen@frognet.net> wrote in message
news:1108525508.751135.284780@f14g2000cwb.googlegroups.com...

the ghost that haunts in bad taste


And it looks like Bob was right, this spector only appears when someone
mentions his name.

Not "only", but "always." It also appears in any usenet
group in which I post. It's like having a pal with me all
the time. I've not had such a devoted fan before.


Bob
--

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

A. Einstein
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Porky
science forum beginner


Joined: 25 Mar 2005
Posts: 41

PostPosted: Thu Mar 24, 2005 10:04 pm    Post subject: Re: Multi track recording software? Reply with quote

"Bob Cain" <arcane@arcanemethods.com> wrote in message
news:cuuprp0t25@enews1.newsguy.com...
Quote:


Porky wrote:
"dale" <dallen@frognet.net> wrote in message
news:1108525508.751135.284780@f14g2000cwb.googlegroups.com...

the ghost that haunts in bad taste


And it looks like Bob was right, this spector only appears when someone
mentions his name.

Not "only", but "always." It also appears in any usenet
group in which I post. It's like having a pal with me all
the time. I've not had such a devoted fan before.

Well, the term "fan" comes from "fanatic", and that term certainly

applies to the ghossst. Smile (intentional mis-spelling to see it the 'bot can
be tricked)
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The Ghost
science forum Guru Wannabe


Joined: 24 Mar 2005
Posts: 115

PostPosted: Thu Mar 24, 2005 10:04 pm    Post subject: Re: Multi track recording software? Reply with quote

Bob Cain <arcane@arcanemethods.com> wrote in
news:cuulrv4s45@enews2.newsguy.com:

Quote:


The Ghost wrote:
Bob Cain <arcane@arcanemethods.com> wrote in
news:curg3902r1r@enews2.newsguy.com:



Porky wrote:


*LOL* Ya think the ghost thinks we've progressed? :-)

The Ghost is an automoton, an Eliza like trolling program
put together by Gary Sokolich, an unemployed acoustics
clerk, between his bouts of compulsive masturbation. It has
a bot function now that stalks me by monitoring, via Google,
all of my usenet postings in any group to interject its venom.

I was really surprised when it showed up the other day in
comp.apl but I guess I shouldn't be surprised at anything
arriving from that direction other than sanity.


Bob



Your previous postings pretty much document the severity and extent
of your mental illness, so the above revelation should be of no
surprise to anyone. Just how long have you been peeping in windows
watching middle aged men masturbate. Have you also been taking
pictures and/or videos.

Nah, it was just a good guess. Thanks for the honesty of
affirming it.


Bob


Since when do questions regarding your behavior constitute an affirmation?
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The Ghost
science forum Guru Wannabe


Joined: 24 Mar 2005
Posts: 115

PostPosted: Thu Mar 24, 2005 10:04 pm    Post subject: Re: Nested Vectors and Indexing Reply with quote

Bob Cain <arcane@arcanemethods.com> wrote in
news:cv9he701dvo@enews1.newsguy.com:

Quote:


The Ghost wrote:

No one with the engineering education you claim would need to go
begging in sci.physics for a spoon-fed help in solving the wave
equation for one- dimensional wave propatation in air which is
discussed in virtually every introductory textbook on acoustics.

If that is how you read the question I really did ask you
need some remedial studies. The actual question I asked
doesn't seem to have been addressed before.


Bob

The fact that the "actual" question that you asked didn't "seem" to have
been addressed before is irrelevant. The answer to the question you asked
involved a straight-forward application/solution of the partial
differential equation for one-dimensional wave propagation in air with
appropriate boundary conditions and for a specific forcing function.

Given that you were the one who was incapable of performing the trivial and
straight-forward mathematical analysis that was required, and one that is
well within the capabilities of most third-year undergraduate engineering
students, I would suggest that it is you, not I, who is in need of so-
called remedial studies.

You really should write a letter to the engineering school that you
attended and either ask for a refund or ask that you be given the
opportunity to audit, at no charge, elementary physics, engineering, math
and science courses that you clearly failed to learn anything from the
first time around.
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Bob Cain
science forum Guru


Joined: 07 Jun 2005
Posts: 360

PostPosted: Thu Mar 24, 2005 10:04 pm    Post subject: Re: Nested Vectors and Indexing Reply with quote

The Ghost wrote:

Quote:
The fact that the "actual" question that you asked didn't "seem" to have
been addressed before is irrelevant.

Oh. Point us, then, toward an answer in any text or in any
paper to the question of what the relationship is between
the pressure at a point and the velocity of particles about
that point in a plane wave.

Quote:
The answer to the question you asked
involved a straight-forward application/solution of the partial
differential equation for one-dimensional wave propagation in air with
appropriate boundary conditions and for a specific forcing function.

If it was all so trivial, why did the solution defy you?

The real question to which you dishonestly refer and the
approximate answers to it proceed from the plane wave
solution to the wave equation. It wasn't necessasary to
solve that to formulate and solve the actual problem at
hand. You know that and are being intentionally dishonest
in your stalking of my usenet presence.

You, as Ghost or as Gary Sokolich, are a total fraud and
utterly insane. With this note, you've seen my last word in
response to you. Stalk away, dipshit, I now have you
globally kill filed.


Bob

P.S. Your bumbling, rudimentary and wholly inadequate
attempt at answering a DSP question recently was truly funny.
--

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

A. Einstein
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Angelo Campanella
science forum Guru Wannabe


Joined: 08 May 2005
Posts: 226

PostPosted: Thu Mar 24, 2005 10:04 pm    Post subject: Re: Making It Loud? Reply with quote

Ron Hubbard wrote:
Quote:
I think you kinda have the wrong idea. I"m not trying to record
anything; I just want to create a high intensity pulse of 15 kHz sound.
Technically, that's ultrasound. but why quibble.

I built a St Claire type vibrator (15 kHz, 160 dB SPL) for my MS thesis
(JASA Jan 1980) ages ago. St. Claire wrote an article about that
'vibrator' in the Review of Scientific Instruments around 1942 or so.

Quote:
But by itself, a magnetostrictive rod or ring-- no matter how hard
driven-- won't produce much audible sound all by itself anymore than a
bare piezoceramic element; there needs to
be a way to couple the magnetostrictive element to the air. It's
possible (I guess...) to solder or braze a magnetostrictive rod to a
thin steel diaphragm, but how do you do that to a *ring* of
nickel, monel, or whatever magnetostrictive metal I choose?

Attach a large face on either (or both) end(s) of a rod.

Quote:
I had once built a "sonic screwdriver" that was a masterpiece of
electronics and sonic engineering, that could turn screws just by using
sound waves alone. The problem was that it took about 143 dB of sound to
for it to work, so it was a bit annoying to use.<g> Moving the
frequency up to the near ultrasonic range cuts down that problem but now
I need to design a better transducer. Magnetostrictive materials have
several advantages over piezo elements, but there are a few
design problems that are unique to using such elements

The St Claire had a 4" or 5" diameter face. It was an aluminum bar about
8" long of 6061 Al alloy.

Ang. C.
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Angelo Campanella
science forum Guru Wannabe


Joined: 08 May 2005
Posts: 226

PostPosted: Thu Mar 24, 2005 10:04 pm    Post subject: Re: Removing hum from a recording Reply with quote

robert bristow-johnson wrote:

Quote:
other than EE depts., i never heard of a "DSP dept." at any university, but
that would be an interesting idea.

The DSP discipline is rampant in industrial, commercial and military
circles. If Universities have not acknowledged said discipline, they are
dinosaurs.

It's more the case, I think, that academic EE departments have
considered the EE "digital" activities as having encompassed what I term
DSP. But other departments such as Physics, Mechanical Engineering and
Music do incorporate and practice DSP activities daily.

There is a rapidly growing specialization in the Acoustical Society of
American called "Signal Processing", where, DSP is prominent. Activities
there include Auralization, Active Noise Control, Music and other
systematic treatments of time and frequency varying sounds.

Angelo Campanella
--------- www.CampanellaAcoustics.com ---------
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Porky
science forum beginner


Joined: 25 Mar 2005
Posts: 41

PostPosted: Thu Mar 24, 2005 10:04 pm    Post subject: Re: Making It Loud? Reply with quote

"The Ghost" <theghost@sbcglobal.net> wrote in message
news:Xns9621C7AC0A829theghosthotmailcom@140.99.99.130...
Quote:
"Porky" <noham@nospam.com> wrote in
news:f950e.47666$5T6.38552@bignews4.bellsouth.net:


"The Ghost" <theghost@sbcglobal.net> wrote in message
news:Xns9621BAA2E998theghosthotmailcom@140.99.99.130...
"Porky" <noham@nospam.com> wrote in
news:H040e.70170$%Y4.16441@bignews6.bellsouth.net:

"Ultrasionic transducers"? The only references I found on Google for
"ultrasionic transducers" had to do with vaginas and wood. Now that's
what I call a joke!

It's "ultrasonic" you moronic swine.


Look at what you wrote in your post. That's why I put "Ultrasionic
transducers" in quotation marks, I was quoting you, you senile old fool!
BTW, I mean that in the nicest way. :-)


Pigs were never known for their intelligence, and you are certainly no
exception. Only a mindless swine such as yourself would take an obvious
typo literally and, worse yet, make a childish and pathetic attempt at
portraying it otherwise. The truth of the matter is that the only one who
is old, senile and a fool is you.

By the way, what ever happened to the numerous times that you asserted
that
you were placing me in your (permanent) kill file. Perhaps you should
check your (permanent) killfile because it is obviously not working.


Typo's are mechanical errors caused by the fingers, your consistant
spelling and grammatical errors would seem to indicate mental deficiency.
As for the killfile, I just did a re-install of XP on my computer, and
when I re-subscribed to this group, the killfile was erased, so I'll have to
fix that.
BTW, I have to apologize for the "senile old fool" phrase, obviously I
meant, "doddering, senile old fool"
Have a nice day
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