"The Ghost" wrote in message
30...
"Porky" wrote in
:

"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. :-)

"Porky" wrote in
:


"The Ghost" wrote in message
30...
"Porky" wrote in
:

"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.

..

Mike, I only know when this psychopath has thrown more venom
my way when others respond to it. I have him globally kill
filed and I would urge you to do the same.

Bob

Porky wrote:
"The Ghost" wrote in message
. 130...


--

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

A. Einstein

"The Ghost" wrote in message
. 130...
"Porky" wrote in
:


"The Ghost" wrote in message
30...
"Porky" wrote in
:

"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

"Bob Cain" wrote in message
...
Mike, I only know when this psychopath has thrown more venom
my way when others respond to it. I have him globally kill
filed and I would urge you to do the same.

Bob
Yeah, I did, but as I explained in my previous reply to the ghost, I did
an XP re-install and accidentally erased my killfile when I re-subscribed to
the news server. Fortunately that is easily fixed, especially since the
ghost was the only person irritating enough to be placed in my killfile. I
hope he appreciates that distinction! :-)

Bob Cain wrote in
:

Mike, I only know when this psychopath has thrown more venom
my way when others respond to it.


In addition to being a technically-inpet fraud and liar, Bob Cain is the
consummate hypocrite and a contemptable piece of human waste. Anyone who
wants to waste their time checking Bob Cain's posting record (Google
Groups) will find that he posesses in spades all of the traits that he
routinely condemns in others, and that his present post is no exception.

"The Ghost" wrote in message
. 130...
Bob Cain wrote in
:

Mike, I only know when this psychopath has thrown more venom
my way when others respond to it.


In addition to being a technically-inpet fraud and liar, Bob Cain is the
consummate hypocrite and a contemptable piece of human waste. Anyone who
wants to waste their time checking Bob Cain's posting record (Google
Groups) will find that he posesses in spades all of the traits that he
routinely condemns in others, and that his present post is no exception.

That would be inept (not inpet), possesses (not posesses) and contemptible
(not contemptable). Really, Ghost, if you're going to insult someone's
intelligence, the very least you can do is try not to appear illiterate.

"Jim Carr" wrote in
news:WnK0e.168$ZV5.122@fed1read05:

"The Ghost" wrote in message
. 130...
Bob Cain wrote in
:

Mike, I only know when this psychopath has thrown more venom
my way when others respond to it.


In addition to being a technically-inpet fraud and liar, Bob Cain is
the consummate hypocrite and a contemptable piece of human waste.
Anyone who wants to waste their time checking Bob Cain's posting
record (Google Groups) will find that he posesses in spades all of
the traits that he routinely condemns in others, and that his present
post is no exception.

That would be inept (not inpet), possesses (not posesses) and
contemptible (not contemptable). Really, Ghost, if you're going to
insult someone's intelligence, the very least you can do is try not to
appear illiterate.


What, if it weren't for my typos, would you mindlessly whine about?

"Porky" wrote in
:

Yeah, I did, but as I explained in my previous reply to the ghost, I
did
an XP re-install and accidentally erased my killfile when I
re-subscribed to the news server. Fortunately that is easily fixed,
especially since the ghost was the only person irritating enough to be
placed in my killfile. I hope he appreciates that distinction! :-)


Excuses....excuses......but that's pretty much what everyone has come to
expect from porky the pig in the swine pen.

Hoepfully porky will get his problem fixed asap, so that no one will be
subjected to his mindless and nonsensical replies to my posts in the
future.

BYW, Easter is only a few days away and it's that time of the year when
pigs serve there only useful purpose.

"The Ghost" wrote in message
. 130...
"Jim Carr" wrote in
news:WnK0e.168$ZV5.122@fed1read05:

"The Ghost" wrote in message
. 130...
Bob Cain wrote in
:

Mike, I only know when this psychopath has thrown more venom
my way when others respond to it.


In addition to being a technically-inpet fraud and liar, Bob Cain is
the consummate hypocrite and a contemptable piece of human waste.
Anyone who wants to waste their time checking Bob Cain's posting
record (Google Groups) will find that he posesses in spades all of
the traits that he routinely condemns in others, and that his present
post is no exception.

That would be inept (not inpet), possesses (not posesses) and
contemptible (not contemptable). Really, Ghost, if you're going to
insult someone's intelligence, the very least you can do is try not to
appear illiterate.


What, if it weren't for my typos, would you mindlessly whine about?

Your mindless posts, perhaps? Your lack of intelligence is exceeded only
by your ineptitude at inventing creative insults. You're no fun at all. Back
when I was fueding with Jim, I was forced to acknowledge his mastery of the
insult as a high art form. You're just an idiot with a computer, and I
doubt even a thousand of you pecking away on your collective keyboards could
come up with even one creative insult!

"The Ghost" wrote in message
. 130...
"Porky" wrote in
:

Yeah, I did, but as I explained in my previous reply to the ghost, I
did
an XP re-install and accidentally erased my killfile when I
re-subscribed to the news server. Fortunately that is easily fixed,
especially since the ghost was the only person irritating enough to be
placed in my killfile. I hope he appreciates that distinction! :-)


Excuses....excuses......but that's pretty much what everyone has come to
expect from porky the pig in the swine pen.

Hoepfully porky will get his problem fixed asap, so that no one will be
subjected to his mindless and nonsensical replies to my posts in the
future.

BYW, Easter is only a few days away and it's that time of the year when
pigs serve there only useful purpose.

At least pigs have a purpose, ghosts only annoy.

PLONK! (no typo)

--


Roger W. Norman
SirMusic Studio
http://blogs.salon.com/0004478/

"The Ghost" wrote in message
. 130...
"Porky" wrote in
:


"The Ghost" wrote in message
30...
"Porky" wrote in
:

"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.

.

Just did so, but everyone should remember not to quote this guy when those
who haven't PLONKed him yet so that his diatribes of vast intelligence don't
get through.

--


Roger W. Norman
SirMusic Studio
http://blogs.salon.com/0004478/

"Bob Cain" wrote in message
...
Mike, I only know when this psychopath has thrown more venom
my way when others respond to it. I have him globally kill
filed and I would urge you to do the same.

Bob

Porky wrote:
"The Ghost" wrote in message
. 130...


--

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

A. Einstein

Roger W. Norman wrote:
PLONK! (no typo)


Agreed.

Listen up.

By now, we all know how to make filters that work.

Go to it.

Angelo Campanella

"Angelo Campanella" wrote in message
news
Roger W. Norman wrote:
PLONK! (no typo)


Agreed.

Listen up.

By now, we all know how to make filters that work.

Go to it.


Where did that filter idea come from? I was asking about a
magnetostrictive acoustical transducer-- a way to produce a
lot of sonic energy in and through air. The very last thing that I
needed was a filter.

Ron

Ron Hubbard wrote:

Where did that filter idea come from? I was asking about a
magnetostrictive acoustical transducer-- a way to produce a
lot of sonic energy in and through air. The very last thing that I
needed was a filter.

Ron, we are talking about a Ghost filter. It's of the notch
type. Most news readers will allow you to filter out
postings based on the sender so that you don't have to see
what they post.


Bob
--

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

A. Einstein

In sci.physics, Bob Cain

wrote
on Sat, 26 Mar 2005 01:40:58 -0800
:


Ron Hubbard wrote:

Where did that filter idea come from? I was asking about a
magnetostrictive acoustical transducer-- a way to produce a
lot of sonic energy in and through air. The very last thing that I
needed was a filter.

Ron, we are talking about a Ghost filter. It's of the notch
type. Most news readers will allow you to filter out
postings based on the sender so that you don't have to see
what they post.

Just be careful; there are two Ghosts about. :-) Hopefully
I'm the more intelligent one. (I'm also the Earthlink one,
as you can probably see in my Path: header.)

As for filters -- they come in various forms; the usual terms
I've heard are "killfile", "scorefile", or "krillfile".
The exact terminology probably depends on the newsreader.

As for magnetostrictive acoustical transducers -- an
interesting notion. One might be able to excite the water
(since water has an electrical dipole moment, it's about
the only candidate I can think of in the atmosphere that
might even respond to a magnetic field, though were one
talking about gaseous iron one might get into interesting
-- but extremely hot -- territory).

Oxygen also is paramagnetic in its liquid form, which
means it might respond to the hypothetical transducer.
I can't say I've heard of any research in that area --
but then, I'm not in that area; my field involves computer
software development. :-)

http://www.webelements.com/webelemen...ext/O/key.html

Unfortunately, nitrogen does not have a similar comment, so
I don't know how it will respond to a magnetic field.

http://www.webelements.com/webelemen...ext/N/key.html

(How does one sniff a liquid that will freeze one's nose off? :-) )

I'm somewhat curious as to the construction of the OP's
magnetorestrictive transducer coil. As one well knows,
transformers tend to hum (in older model TV sets, they
in fact scream, but that's because they operate at
15,750 Hz as opposed to power transformers' 60). It's
not clear to me whether this hum will interfere with
the OP's objective or not; if one is constructing a high-quality
loudspeaker it might, but if one is constructing a weapon,
it might not matter too much unless the enemy hears the
weapon prior to the firing thereof... :-)



Bob


--
#191,
It's still legal to go .sigless.

Bob Cain wrote in
:

Ron, we are talking about a Ghost filter. It's of the notch
type. Most news readers will allow you to filter out
postings based on the sender so that you don't have to see
what they post.
Bob


The Ghost has yet to be shown to be wrong on any technical issue.
Unfortuantely the same can not be said for Bob Cain. Do a Google Search on
Bob Cain and Doppler distortion and, in particular, "Bob Cain goes down and
out in defeat."

Angelo Campanella wrote in
news
Roger W. Norman wrote:
PLONK! (no typo)


Agreed.

Listen up.

By now, we all know how to make filters that work.

Go to it.

Angelo Campanella


There is another solution, and I thank you for your support.

"Porky" wrote in
:


"The Ghost" wrote in message
. 130...
"Porky" wrote in
:

Yeah, I did, but as I explained in my previous reply to the ghost, I
did
an XP re-install and accidentally erased my killfile when I
re-subscribed to the news server. Fortunately that is easily fixed,
especially since the ghost was the only person irritating enough to be
placed in my killfile. I hope he appreciates that distinction! :-)


Excuses....excuses......but that's pretty much what everyone has come to
expect from porky the pig in the swine pen.

Hoepfully porky will get his problem fixed asap, so that no one will be
subjected to his mindless and nonsensical replies to my posts in the
future.

BYW, Easter is only a few days away and it's that time of the year when
pigs serve there only useful purpose.

At least pigs have a purpose, ghosts only annoy.


Ghosts only annoy pigs and jackasses. Speaking of jackasses, Jim Carr is
really slipping. I intentionally included the grammatical error (there vs
their) solely to get his attention, and I am really disappointed that he
missed it.

The Ghost In The Machine wrote in
:

Just be careful; there are two Ghosts about. :-) Hopefully
I'm the more intelligent one.


Intelligence isn't established by hope. Furthermore, if you are of such
superior intelligence, as you hope, why in God's name would you even want
to involve yorself this feud?

"Roger W. Norman" wrote in
:

Just did so, but everyone should remember not to quote this guy when
those who haven't PLONKed him yet so that his diatribes of vast
intelligence don't get through.


By all means, and in particular to make even more room for your diatribes
of vast intelligence.

"Porky" wrote in
:

Your mindless posts, perhaps? Your lack of intelligence is exceeded
only
by your ineptitude at inventing creative insults. You're no fun at
all.

Thank you for bestowing upon all of the readers of these newsgroups your
pig-founded enlightenment. I, for one, was previously unaware that one's
intelligence is judged on the basis of their aptitude at inventing creative
insults. Unfortunately, when that course on creative insults was offered,
I missed it because I had already signed up for courses in linear systems
theory and advance engineering math. Perhaps that's why I was correct and
you, Bob Cain and Jim Carr were wrong on every aspect of the issue of
Doppler Distortion.


Back when I was fueding with Jim, I was forced to acknowledge his
mastery of the insult as a high art form. You're just an idiot with a
computer, and I doubt even a thousand of you pecking away on your
collective keyboards could come up with even one creative insult!


Call me whatever you wish, but given that you don't have the professional
credentials to back up your insults/assertions, they mean nothing. The
fact that you admire Jim Carr for his so-called "mastery of the insult as a
high art form" speaks volumes about your mentality and your total lack of
character.

In sci.physics, The Ghost

wrote
on Sun, 27 Mar 2005 03:24:48 GMT
:
The Ghost In The Machine wrote in
:

Just be careful; there are two Ghosts about. :-) Hopefully
I'm the more intelligent one.


Intelligence isn't established by hope. Furthermore, if you are of such
superior intelligence, as you hope, why in God's name would you even want
to involve yorself this feud?


Oh well, in that case then I must concede, you're the more intelligent
one here, obviously.

Followups.

--
#191,
It's still legal to go .sigless.

"The Ghost" wrote in message
. 130...
"Porky" wrote in
:

Your mindless posts, perhaps? Your lack of intelligence is exceeded
only
by your ineptitude at inventing creative insults. You're no fun at
all.

Thank you for bestowing upon all of the readers of these newsgroups your
pig-founded enlightenment. I, for one, was previously unaware that one's
intelligence is judged on the basis of their aptitude at inventing
creative
insults. Unfortunately, when that course on creative insults was offered,
I missed it because I had already signed up for courses in linear systems
theory and advance engineering math. Perhaps that's why I was correct and
you, Bob Cain and Jim Carr were wrong on every aspect of the issue of
Doppler Distortion.

You didn't prove anything on the issue of Doppler distortion, and in
fact, your input wasn't even related to the issue of Doppler distortion in a
speaker! We all know you're lying about your "qualifications" because we all
know that they don't allow ghosts to attend college.

Back when I was fueding with Jim, I was forced to acknowledge his
mastery of the insult as a high art form. You're just an idiot with a
computer, and I doubt even a thousand of you pecking away on your
collective keyboards could come up with even one creative insult!


Call me whatever you wish, but given that you don't have the professional
credentials to back up your insults/assertions, they mean nothing. The
fact that you admire Jim Carr for his so-called "mastery of the insult as
a
high art form" speaks volumes about your mentality and your total lack of
character.

Actually, I do have the professional credentials to back up my
insults/assertions, I hold an advanced doctorate in Insultology and a
masters in Assertonomy from Vanderbilt University.
Strange that a ghost, which represents a total lack of everything, should
comment on anyone's character.

"Porky" wrote in
:


You didn't prove anything on the issue of Doppler distortion, and
in fact, your input wasn't even related to the issue of Doppler
distortion in a speaker!

The problem was not with the relevance of what I said/did, the problem was
and continues to be with your inability to recognize/acknowledge it.



We all know you're lying about your
"qualifications" because we all know that they don't allow ghosts to
attend college.

You all know nothing whatsoever about my qualifications. Nonetheless, you
are correct that "they" don't allow ghosts to attend college, but I
attended college and graduate school before I became a ghost.


Actually, I do have the professional credentials to back up my
insults/assertions, I hold an advanced doctorate in Insultology and a
masters in Assertonomy from Vanderbilt University.

Let me also add your doctorate in moronology.


Strange that a ghost, which represents a total lack of everything,
should comment on anyone's character.

What is really strange is that a pig would comment on anything. Ghosts
have souls...pigs don't. Pigs eat garbage, roll in the mud, grunt, get
killed and then eaten. Ghosts live forever.

Bob Cain wrote in
:

Ron, we are talking about a Ghost filter. It's of the notch
type. Most news readers will allow you to filter out
postings based on the sender so that you don't have to see
what they post.
Bob


Alternatively, let me recommend that you utilize a Bob Cain filter. It too
is of the notch type, and it will protect you against the detrimental and
disasterous consequences of taking seriously anything further that Bob Cain
has to say. In this regard, I can't imagine why would you even consider
taking seriously anything that Bob Cain has to say. He recently denied the
existence of Doppler distortion in loudspeakers which was analyzed and
established over thirty years ago. Furthermore, even though he proclaims
himself to be a scientist, he was unabale to solve a trivial partial
differential equation for one-dimensional wave propagation in a tube. Bob
Cain is a technically inpept ignoramus and a fraud and it is time for all
of his admirers to stop their denial and get a reality check.

"The Ghost" wrote in message
. 130...
"Porky" wrote in
:


You didn't prove anything on the issue of Doppler distortion, and
in fact, your input wasn't even related to the issue of Doppler
distortion in a speaker!

The problem was not with the relevance of what I said/did, the problem was
and continues to be with your inability to recognize/acknowledge it.


No, the problem is that you can't see that there is a difference between
a speaker cone driven by a single complex source vibrating at multiple
frequencies and, and a speaker cone vibrating at one frequency while the
speaker is being moved by an entirely different source.

We all know you're lying about your
"qualifications" because we all know that they don't allow ghosts to
attend college.

You all know nothing whatsoever about my qualifications. Nonetheless, you
are correct that "they" don't allow ghosts to attend college, but I
attended college and graduate school before I became a ghost.

Yeah, sure. Look, we all know that you employed a ghostwriter for your
part of the technical paper cowriten with Jensen.

Actually, I do have the professional credentials to back up my
insults/assertions, I hold an advanced doctorate in Insultology and a
masters in Assertonomy from Vanderbilt University.

Let me also add your doctorate in moronology.

By george, you're right, I did forget that one! "Moronology" would be the
study of morons, and I get a refresher course every time I read one of your
posts!

Strange that a ghost, which represents a total lack of everything,
should comment on anyone's character.

What is really strange is that a pig would comment on anything. Ghosts
have souls...pigs don't. Pigs eat garbage, roll in the mud, grunt, get
killed and then eaten. Ghosts live forever.

Ghosts don't have souls, because ghosts don't exist. Pigs have brains,
ghosts don't, because if the ghost doesn't exist neither does its brain..
Pigs may die, but ghosts, being nonexistant, never live at all. At least
pigs are good for something. Ghosts are totally useless!

"Porky" wrote in
:

Ghosts don't have souls, because ghosts don't exist. Pigs have
brains,
ghosts don't, because if the ghost doesn't exist neither does its
brain.. Pigs may die, but ghosts, being nonexistant, never live at
all. At least pigs are good for something. Ghosts are totally useless!


Have another drink and a long nap, and get back to us on this when you
capable of being even marginally coherent.

Peter Weis wrote in
. dk:

Porky wrote:

No, the problem is that you can't see that there is a difference
between
a speaker cone driven by a single complex source vibrating at
multiple frequencies and, and a speaker cone vibrating at one
frequency while the speaker is being moved by an entirely different
source.

To continue on an acoustic line ...

I have difficulties seing the vital significance of that difference on
the sound field created by the loudspeaker.
In fact the only difference I see is that there will be a contribution
from the frame of the loudspeaker. But that is not likely to affect
the modulation of the diaphragm-signal, at least not within the level
of details we are discussing here.

Would you kindly elaborate on the difference?

regards
Peter




Don't hold your breath waiting for any reply from porky the mindless and
cowardly pig, let alone an intelligent, sensible and coherent reply.

"The Ghost" wrote in message
. 130...
"Porky" wrote in
:

Ghosts don't have souls, because ghosts don't exist. Pigs have
brains,
ghosts don't, because if the ghost doesn't exist neither does its
brain.. Pigs may die, but ghosts, being nonexistant, never live at
all. At least pigs are good for something. Ghosts are totally useless!


Have another drink and a long nap, and get back to us on this when you
capable of being even marginally coherent.

My coherency isn't the issue, it's really your lack of comprehension.
*Yawn* It's obvious that any entertainment value your posts might have had
is long gone, this has become boring, time to put you back in the killfile.
Bye, now!

"Porky" wrote in
:


"The Ghost" wrote in message
. 130...
"Porky" wrote in
:

Ghosts don't have souls, because ghosts don't exist. Pigs have
brains,
ghosts don't, because if the ghost doesn't exist neither does its
brain.. Pigs may die, but ghosts, being nonexistant, never live at
all. At least pigs are good for something. Ghosts are totally
useless!


Have another drink and a long nap, and get back to us on this when
you capable of being even marginally coherent.

My coherency isn't the issue, it's really your lack of
comprehension.
*Yawn* It's obvious that any entertainment value your posts might have
had is long gone, this has become boring, time to put you back in the
killfile. Bye, now!


This became boring when your killfile stopped working. Since you are a
swine and can't avoid your innate mud-slinging temptation, a working
killfile is your only hope.

Bob Cain wrote in
:

Yes, in a plane wave there is a non-linear relationship
between the motion of the particles about a point, which is
what is usually controled with a loudspeaker, and the
pressure at that point, which is what a pressure transducer
would detect.

That is total nonsensical drivel. At low and moderate sound pressure
levels, where air nonlinearity is not a significant factor, pressure and
particle velocity in a plane wave are directly proportional. The nonlinear
relationship between piston motion and resultant plane-wave pressure is due
to the finite excursion of the piston, as Art Ludwig has correctly pointed
out. It is for this reason that (Doppler) intermodulation distortion is
reduced as piston area is increased and piston displacement is reduced
while maintaining the same piston volume velocity.



My analysis showed that the phase
relationship between those distortion components and what
causes them is not what would be required to call it Doppler
distortion as that is usually defined.


What analysis? Where has it been presented, and where have you compared
the predictions of your analysis with measurements that substantiate its
validity and your assertions?

The distortion
maxima occur when the oscilating particles are at the
extreme of their LF oscilation with zero LF velocity the
minima occur when they are moving at maximum LF velocity
through their rest position.

What exactly is your definition of the dynamic non-steady-state distortion
to which you refer, and what measurements do you have to support your
assertion?


What occurs when, OTOH, you put a HF source on a swing going
at some LF will look like traditional Doppler distortion.
There is a difference in what is measured in that case,
where the LF source is decoupled from the receiver, and what
happens when the same motion is given a piston in a tube
where it remains fully coupled.


This absurd and nonsensical issue of coupling is nothing more than a
figment of your technically-inept imagination. The only difference between
the far-field pressure produced by a vibrating piston an infinite wall and
the pressue produced by a vibrating piston in an infinite tube is that in
the former pressure is proportional to piston acceleration, whereas in the
latter, pressure is proportional to piston velocity. In both situations,
FM (Doppler) distortion is produced and its magnitude is solely related to
pistion excursion.

"Porky" wrote in
:


I realize that my view may not seem to be particularly scientific,
but
I've also seen that people bring all sorts of arguments to bear that
have absolutely nothing to do with the Doppler effect. I follow the
math well enough to see that no one so far has proven that any of the
distortion from a speaker has anything to do with the Doppler effect.
Also, due to the effects of inertia and other things, it seems
obvious to
me that driving a speaker cone with one signal while moving the
speaker with another is totally different from driving a speaker cone
with a single complex signal, and I fail to see how othere don't grasp
that.
I fail to see how you fail to grasp that.
This argument has been going on since at least the early 1950's and
some
of the best minds in acoustics haven't been able to prove anything
either way. I have my views and I understand that others will have
other views, so I'll stop here, if for no other reason than I can't
provide solid proof of my views, and I'm aware that I may be wrong.
:-)


You are wrong, and everything that you have said is nonsensical drivel.

Peter Weis wrote in
. dk:

Bob Cain wrote:

What occurs when, OTOH, you put a HF source on a swing going at some
LF will look like traditional Doppler distortion. There is a
difference in what is measured in that case, where the LF source is
decoupled from the receiver, and what happens when the same motion is
given a piston in a tube where it remains fully coupled.

That's interesting, because that is what I don't grasp (meaning I
think you are wrong).
Can you explain the difference to me, like setting up a motion
equation for the HF source diaphragm in the two cases?

best regards
Peter


Apparently Bob Cain has decided to keep the explanation that you requested
a secret.

"Jim Carr" wrote in
news:WnK0e.168$ZV5.122@fed1read05:

"The Ghost" wrote in message
. 130...
Bob Cain wrote in
:

Mike, I only know when this psychopath has thrown more venom
my way when others respond to it.


In addition to being a technically-inpet fraud and liar, Bob Cain is
the consummate hypocrite and a contemptable piece of human waste.
Anyone who wants to waste their time checking Bob Cain's posting
record (Google Groups) will find that he posesses in spades all of
the traits that he routinely condemns in others, and that his present
post is no exception.

That would be inept (not inpet), possesses (not posesses) and
contemptible (not contemptable). Really, Ghost, if you're going to
insult someone's intelligence, the very least you can do is try not to
appear illiterate.

If I did that, then you wouldn't have anything to criticize; and we
certainly wouldn't want that, particularly in view of the fact that you are
a self-admitted, technically-inept looser, with limited formal education, a
failed marriage, and no noteworthy accomplishments to date.