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The disappearance of darkness



 
 
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  #261  
Old May 22nd 13, 11:34 PM posted to rec.photo.digital
nospam
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Posts: 24,165
Default The disappearance of darkness

In article , Eric Stevens
wrote:


They don't listen to electricity.

of course they do. electricity is what moves the speaker coil.

No what moves the coils is the effect of magnatism that does that.


because there's electricity flowing in a coil.


There has to be a magnetic field other than the coil's.

if it wasn't for electricity, there would be no sound.

if it weren't for the cone compressing the air etc.. they'd be no sound.


because electricity is causing it to move.


Only because of the magnetism.


so what? if there was no electricity, it would not move.
  #262  
Old May 22nd 13, 11:34 PM posted to rec.photo.digital
nospam
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Posts: 24,165
Default The disappearance of darkness

In article , Eric Stevens
wrote:

They don't listen to electricity.

of course they do. electricity is what moves the speaker coil.

No what moves the coils is the effect of magnatism that does that.

because there's electricity flowing in a coil.

I'd call it current but each to his own.


technically it's current, but it doesn't change anything.


It changes the magnetic field of the coil.


that's the whole point, and calling it electricity or current doesn't
change that.

if it wasn't for electricity, there would be no sound.

if it weren't for the cone compressing the air etc.. they'd be no
sound.

because electricity is causing it to move.

No, magnatism is doing that 'electricity' runs through many wire's in
cables
and they don't all make sounds.


so what?


Electricity doesn't make sound. (Can you plug wires into your head and
listen to music?)


shut off the electricity to your house and let us know how much sound
you get from your sound system.

if there was no electricity there would be no sound. period.
  #263  
Old May 23rd 13, 02:01 AM posted to rec.photo.digital
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Posts: 210
Default The disappearance of darkness

On Wed, 22 May 2013 17:45:24 -0400, Alan Browne
wrote:

On 2013.05.21 20:10 , Eric Stevens wrote:

It's well known among some sections of the audiophile community that
the ear is much more sensitive than any instrument.


People who believe their ears have more dynamic range, phase sensitivity
and frequency discrimination than instruments have a really bad name for
themselves:

audiophiles.


When it comes to phase detection, our brains (not ears) are pretty dam good - we
can detect sound direction within a few degrees by phase comparison, equal to
any PLL, and better than any equipment I own! (phase has nothing to do with spk
wire!)

Too bad we're not as good at detecting merde du boeuf!!

  #264  
Old May 23rd 13, 02:19 AM posted to rec.photo.digital
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Posts: 210
Default The disappearance of darkness

On Wed, 22 May 2013 18:34:32 -0400, nospam wrote:

In article , Eric Stevens
wrote:

They don't listen to electricity.

of course they do. electricity is what moves the speaker coil.

No what moves the coils is the effect of magnatism that does that.

because there's electricity flowing in a coil.

I'd call it current but each to his own.

technically it's current, but it doesn't change anything.


It changes the magnetic field of the coil.


that's the whole point, and calling it electricity or current doesn't
change that.

if it wasn't for electricity, there would be no sound.

if it weren't for the cone compressing the air etc.. they'd be no
sound.

because electricity is causing it to move.

No, magnatism is doing that 'electricity' runs through many wire's in
cables
and they don't all make sounds.

so what?


Electricity doesn't make sound. (Can you plug wires into your head and
listen to music?)


shut off the electricity to your house and let us know how much sound
you get from your sound system.

if there was no electricity there would be no sound. period.


Hey nospam, I'd give up if I were you... you're wasting your time with people
who insist on proving that they have no technical education what so ever!

Any flow of electric current produces magnetism. Alternating current in the
audio range can induce movement in anything conductive near the current carrier,
including the carrier itself. Such movement creates sound by definition. (object
vibrating at an audio frequency)

Next time you're near a hydro tower, listen to the hum of the wires and tower...

  #265  
Old May 23rd 13, 02:19 AM posted to rec.photo.digital
Alan Browne
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Posts: 12,640
Default The disappearance of darkness

On 2013.05.22 21:01 , wrote:
On Wed, 22 May 2013 17:45:24 -0400, Alan Browne
wrote:

On 2013.05.21 20:10 , Eric Stevens wrote:

It's well known among some sections of the audiophile community that
the ear is much more sensitive than any instrument.


People who believe their ears have more dynamic range, phase sensitivity
and frequency discrimination than instruments have a really bad name for
themselves:

audiophiles.


When it comes to phase detection, our brains (not ears) are pretty dam good - we
can detect sound direction within a few degrees by phase comparison, equal to
any PLL, and better than any equipment I own! (phase has nothing to do with spk
wire!)

Too bad we're not as good at detecting merde du boeuf!!


Two companies I've worked for have equipment that will measure fine
phase differences at frequencies FAR BEYOND human hearing. The audio
range is a piffle to do very fine phase comparisons in a very cheap DSP
even at modest sampling rates.

I mentioned phase just to add to colour about the worthlessness of
"fancy" wire statements from audiophiles.

To be clear: Plain copper wire should not affect phase at all in the 20
- 20 kHz spectrum of audio systems. BUT if you start to do fancy things
to it and change the impedance (as someone mentioned) you can be sure
that there will be phase and amplitude changes within that spectrum.

If you even increase the resistance of the wire (another "someone
mentioned") then the frequency response of the speaker system would
suffer and I would not doubt that there would be phase issues as well to
"colour" the sound.

--
"A Canadian is someone who knows how to have sex in a canoe."
-Pierre Berton
  #266  
Old May 23rd 13, 02:21 AM posted to rec.photo.digital
Alan Browne
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Posts: 12,640
Default The disappearance of darkness

On 2013.05.22 18:34 , nospam wrote:


if there was no electricity there would be no sound. period.


The power failed the other day and the thunder was pretty fricken loud.

--
"A Canadian is someone who knows how to have sex in a canoe."
-Pierre Berton
  #267  
Old May 23rd 13, 04:15 AM posted to rec.photo.digital
nospam
external usenet poster
 
Posts: 24,165
Default The disappearance of darkness

In article ,
wrote:

Next time you're near a hydro tower, listen to the hum of the wires and tower...


when i was younger, i could hear the flyback transformer in a tv set.
  #268  
Old May 23rd 13, 04:21 AM posted to rec.photo.digital
Eric Stevens
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Posts: 13,611
Default The disappearance of darkness

On Wed, 22 May 2013 18:34:29 -0400, nospam
wrote:

In article , Eric Stevens
wrote:

They don't listen to electricity.

of course they do. electricity is what moves the speaker coil.

if it wasn't for electricity, there would be no sound.

electricity is how the entire audio system works.

http://www.preservationsound.com/wp-...ctor-victrola-
gramophone-II.jpg

and in that case, there are no speaker cables, so it isn't relevant.


I was trying to make the point that people don't listen to
electricity. They listen to pressure changes in the air.


the pressure changes are caused by electricity.

note that electricity isn't the only way to make sound, however, for
audio systems it is.


Does the URL above depict an electrical device?

plus, how many audiophiles would be satisfied with that anyway?


How many audiophiles are ever satisfied with anything?


none.

--

Regards,

Eric Stevens
  #269  
Old May 23rd 13, 04:23 AM posted to rec.photo.digital
Eric Stevens
external usenet poster
 
Posts: 13,611
Default The disappearance of darkness

On Wed, 22 May 2013 18:34:32 -0400, nospam
wrote:

In article , Eric Stevens
wrote:

They don't listen to electricity.

of course they do. electricity is what moves the speaker coil.

No what moves the coils is the effect of magnatism that does that.

because there's electricity flowing in a coil.

I'd call it current but each to his own.

technically it's current, but it doesn't change anything.


It changes the magnetic field of the coil.


that's the whole point, and calling it electricity or current doesn't
change that.

if it wasn't for electricity, there would be no sound.

if it weren't for the cone compressing the air etc.. they'd be no
sound.

because electricity is causing it to move.

No, magnatism is doing that 'electricity' runs through many wire's in
cables
and they don't all make sounds.

so what?


Electricity doesn't make sound. (Can you plug wires into your head and
listen to music?)


shut off the electricity to your house and let us know how much sound
you get from your sound system.

if there was no electricity there would be no sound. period.


Ditto for speakers, not to mention several other devices.
--

Regards,

Eric Stevens
  #270  
Old May 23rd 13, 04:26 AM posted to rec.photo.digital
Eric Stevens
external usenet poster
 
Posts: 13,611
Default The disappearance of darkness

On Wed, 22 May 2013 21:19:48 -0400, wrote:

On Wed, 22 May 2013 18:34:32 -0400, nospam wrote:

In article , Eric Stevens
wrote:

They don't listen to electricity.

of course they do. electricity is what moves the speaker coil.

No what moves the coils is the effect of magnatism that does that.

because there's electricity flowing in a coil.

I'd call it current but each to his own.

technically it's current, but it doesn't change anything.

It changes the magnetic field of the coil.


that's the whole point, and calling it electricity or current doesn't
change that.

if it wasn't for electricity, there would be no sound.

if it weren't for the cone compressing the air etc.. they'd be no
sound.

because electricity is causing it to move.

No, magnatism is doing that 'electricity' runs through many wire's in
cables
and they don't all make sounds.

so what?

Electricity doesn't make sound. (Can you plug wires into your head and
listen to music?)


shut off the electricity to your house and let us know how much sound
you get from your sound system.

if there was no electricity there would be no sound. period.


Hey nospam, I'd give up if I were you... you're wasting your time with people
who insist on proving that they have no technical education what so ever!


You have missed the point. nospam thinks that because he knows about
electricity he also knows all about sound systems.

Any flow of electric current produces magnetism. Alternating current in the
audio range can induce movement in anything conductive near the current carrier,
including the carrier itself. Such movement creates sound by definition. (object
vibrating at an audio frequency)

Next time you're near a hydro tower, listen to the hum of the wires and tower...


What is a 'hydro tower'?

Wires hum without electricity. It's just the wind.
--

Regards,

Eric Stevens
 




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