"Phil Allison" wrote in message
...

" The David Loser cretin is not human "


Hardly, I snip to keep the posts readable.


** You tell nothing but lies.

You are one lying, ****ing pile of ****.

Cos you are a congenital, autistic mental defective.

That is the VERY worst thing anyone can possibly be.

Hitler was autistic, so was Goebbles, Stalin and Saddam Hussein.

Both of your parents are of course autistic defectives too.

Do you get the message, yet - IMBECILE ??

Cretins like you are a pox on the face of the earth.


Oh dear!, poor old phil is foaming at the mouth again. Never mind, the men
in white coats will be along soon.

:-)

David.

On Sat, 1 Aug 2009 15:40:23 +0100, "David Looser"
wrote:

And I notice you snipped the entire paragraph about just what a total pratt
you make yourself look by your incessant use of foul language.

More foul language snipped. You never learn do you? Why do you think anyone
will respect your opinions if they come buried in foul language?

I managed to fool him into replying relatively politely (well, at
least without obscenities) a few threads ago by advising a newbie how
to recognise a post better ignored.

Don't suppose it'll work again :-)

"Phil Allison" wrote in message
...

Dave Plowman (Rabid Nutcase) pommy MORON


The capsule has two diaphragms so is *effectively* two back to back.

** You are a clueless, ****ing MORON mindlessly mouthing
technical terms you have zero comprehension of.

Merely using mics does not covey any technical knowledge to the user.

Hence a myriad of myths and buckets full of bull**** abound.

Delivered to you for free by armies of asinine, ****head, autistic
nutcases
like Dave the Pommy ****head.




.... Phil


OK Phil

I give you the benefit of the doubt. Please explain how a capacitor
microphone works and how one can obtain a cardioid (and others such as
figure of eight) pattern using a single signal - no swearing though - and it
must be one signal. If the 'single' signal is delayed or phased shifted to
hit the back of a single diaphragm, it counts as a second signal because it
interacts with the first one. If a second diaphragm is used, it is a
second signal by virtue of being a second microphone. If you use any
references, please show them.

Mike

"fredbloggstwo"

I give you the benefit of the doubt. Please explain how a capacitor
microphone works and how one can obtain a cardioid (and others such as
figure of eight) pattern using a single signal - no swearing though - and
it must be one signal.

** You and others appear to misunderstand what the term " signal" means in
analogue audio electronics.

A microphone's "signal" is that audio frequency *voltage* that the
microphone outputs when immersed in a sound field.

The capsule of a typical, single capsule, variable pattern condenser mic (
one that offers omni, figure 8 and cardioid etc ) has only one output signal
terminal - and that is where the *one and only* signal first appears.

The pick up pattern is altered by use of a DC control voltage.

See schem of the AKG C12a:

http://www.sdiy.org/oid/mics/AKG-C12a.gif

Note that one metallised diaphragm connects directly to ground, the other
has the variable DC control voltage applied to it and is bypassed to ground
with a large value cap to prevent any signal appearing on it. The output
signal appears on the metal structure of the capsule, which also has a fixed
DC bias voltage.

For comparison:

There are dynamic mics that have two capsules, one for low and one for high
frequencies and internally combine the two signals produced into one
output - ie by use of a combining x-over filter.

Some marketing type might conceivably call that filter circuit a " matrix "
in the advertising blurb.



...... Phil

On Sun, 2 Aug 2009 12:23:01 +1000, "Phil Allison"
wrote:


"fredbloggstwo"

I give you the benefit of the doubt. Please explain how a capacitor
microphone works and how one can obtain a cardioid (and others such as
figure of eight) pattern using a single signal - no swearing though - and
it must be one signal.

** You and others appear to misunderstand what the term " signal" means in
analogue audio electronics.

A microphone's "signal" is that audio frequency *voltage* that the
microphone outputs when immersed in a sound field.

The capsule of a typical, single capsule, variable pattern condenser mic (
one that offers omni, figure 8 and cardioid etc ) has only one output signal
terminal - and that is where the *one and only* signal first appears.

The pick up pattern is altered by use of a DC control voltage.

See schem of the AKG C12a:

http://www.sdiy.org/oid/mics/AKG-C12a.gif

Note that one metallised diaphragm connects directly to ground, the other
has the variable DC control voltage applied to it and is bypassed to ground
with a large value cap to prevent any signal appearing on it. The output
signal appears on the metal structure of the capsule, which also has a fixed
DC bias voltage.

For comparison:

There are dynamic mics that have two capsules, one for low and one for high
frequencies and internally combine the two signals produced into one
output - ie by use of a combining x-over filter.

Some marketing type might conceivably call that filter circuit a " matrix "
in the advertising blurb.



..... Phil



Good choice. This is a nice easy schematic to follow. First up, the
capsule produces two signals - one from the top diaphragm, and another
from the lower. The signals can be generated in or out of phase by
virtue of the polarization voltage being centre tapped to the stator.

In the omni position, the high voltage to the top diaphragm is shorted
down to ground, and the diaphragms generate an in-phase signal to a
pressure wave. They produce out of phase to a velocity wave, hence
have an omni, not a figure 8 response.

In the figure eight position the opposite happens. The polarization is
high on the upper diaphragms, and pressure waves cause cancellation at
the centre point, while velocity waves add.

In the intermediate cardioid position, a mixture of the two happens,
and a cardioid response results.

This is a result of in and out of phase addition of TWO signals from
TWO diaphragms. It can't be done with one, and the fact that they get
summed at the grid won't and can't make them one.. The various
matrixing operations are performed on the bias circuit.

So, no more arguments, eh Phil? You got it wrong again, and
unfortunately for you your evidence only illustrates nicely how
thoroughly wrong you got it.

d

"Don Pearce Massive LIAR "
"Phil Allison"

"fredbloggstwo"

I give you the benefit of the doubt. Please explain how a capacitor
microphone works and how one can obtain a cardioid (and others such as
figure of eight) pattern using a single signal - no swearing though -
and
it must be one signal.

** You and others appear to misunderstand what the term " signal" means
in
analogue audio electronics.

A microphone's "signal" is that audio frequency *voltage* that the
microphone outputs when immersed in a sound field.

The capsule of a typical, single capsule, variable pattern condenser mic (
one that offers omni, figure 8 and cardioid etc ) has only one output
signal
terminal - and that is where the *one and only* signal first appears.

The pick up pattern is altered by use of a DC control voltage.

See schem of the AKG C12a:

http://www.sdiy.org/oid/mics/AKG-C12a.gif

Note that one metallised diaphragm connects directly to ground, the other
has the variable DC control voltage applied to it and is bypassed to
ground
with a large value cap to prevent any signal appearing on it. The output
signal appears on the metal structure of the capsule, which also has a
fixed
DC bias voltage.

For comparison:

There are dynamic mics that have two capsules, one for low and one for
high
frequencies and internally combine the two signals produced into one
output - ie by use of a combining x-over filter.

Some marketing type might conceivably call that filter circuit a " matrix
"
in the advertising blurb.


Good choice. This is a nice easy schematic to follow. First up, the
capsule produces two signals - one from the top diaphragm, and another
from the lower.

** Arrant nonsense.

The metal structure has the audio signal on it and there is only ONE of
them.

Neither diaphragm has any signal on it.

There simply is NO circuit involved that "matrixes" two signals to obtain
the various patterns.

Go get ****ed - Don.


...... Phil

On Sun, 2 Aug 2009 16:56:55 +1000, "Phil Allison"
wrote:

The metal structure has the audio signal on it and there is only ONE of
them.

Neither diaphragm has any signal on it.


The signal is *between* the diaphragm and the stator. There are two
diaphragms, each of which produces its own signal on the stator. The
stator performs a simple electrical summing operation. I'm amazed you
can't see this (of course you can once it has been pointed out, you
have simply painted yourself into a corner and now have no way back
without losing face - which is all you have).

d

In article ,
Phil Allison wrote:
** You and others appear to misunderstand what the term " signal" means
in analogue audio electronics.

You appear to misunderstand what matrixing means.

--
*Does fuzzy logic tickle? *

Dave Plowman London SW
To e-mail, change noise into sound.

In article ,
Phil Allison wrote:
Good choice. This is a nice easy schematic to follow. First up, the
capsule produces two signals - one from the top diaphragm, and another
from the lower.

** Arrant nonsense.

The metal structure has the audio signal on it and there is only ONE
of them.

Neither diaphragm has any signal on it.

Explain the magic whereby the diaphragm changes that signal, then?

--
*I have plenty of talent and vision. I just don't care.

Dave Plowman London SW
To e-mail, change noise into sound.

"Don Pearce CRIMINAL LIAR "


The signal is *between* the diaphragm and the stator.

Arrant nonsense.

The metal structure has the audio signal on it and there is only ONE of
them.

Neither diaphragm has any signal on it.

There simply is NO circuit involved that "matrixes" two signals to obtain
the various patterns.

Go get ****ed - you LYING ****.




...... Phil