On Tuesday, 19 December 2017 15:21:41 UTC, Max Demian wrote:
On 19/12/2017 11:23, whisky-dave wrote:
On Tuesday, 19 December 2017 10:58:34 UTC, The Natural Philosopher wrote:

Bass performance of a pair of stereo speakers is seriously ****ed if one
is in antiphase. Mind you with subwoofers these days the problem is less
noticeable.

but you still can't tell phase, what you hear is amplitude NOT phase.

You only have one subwoofer so phase isn't a problem.

There's far more the frequencies than just sound or even base sounds.



--
Max Demian

Some drunk desperately cowering behind
whisky-dave
desperately attempted to bull**** its way
out of its predicament and fooled absolutely
no one at all, as always.

Some drunk desperately cowering behind
whisky-dave
desperately attempted to bull**** its way
out of its predicament and fooled absolutely
no one at all, as always.

In article ,
whisky-dave wrote:
On Tuesday, 19 December 2017 15:21:41 UTC, Max Demian wrote:
On 19/12/2017 11:23, whisky-dave wrote:
On Tuesday, 19 December 2017 10:58:34 UTC, The Natural Philosopher
wrote:

Bass performance of a pair of stereo speakers is seriously ****ed
if one is in antiphase. Mind you with subwoofers these days the
problem is less noticeable.

but you still can't tell phase, what you hear is amplitude NOT phase.

You only have one subwoofer so phase isn't a problem.

There's far more the frequencies than just sound or even base sounds.

But you have to remember many on here are so old they can only hear the
bass end. ;-) Add that to senility and you get some of the nonsense posts.

--
*Born free...Taxed to death.

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

On Monday, 18 December 2017 14:36:05 UTC, whisky-dave wrote:
On Monday, 18 December 2017 13:31:15 UTC, tabby wrote:
On Monday, 18 December 2017 13:12:10 UTC, Max Demian wrote:
On 18/12/2017 10:59, whisky-dave wrote:
On Friday, 15 December 2017 17:54:23 UTC, Mike Clarke wrote:
On 15/12/2017 16:06, whisky-dave wrote:

Apparently human ears can't detect the differnt phase so it shouldn;t make a differnce.

They can certainly tell the difference if the left and right hand
channels are out of phase.

What do you mean by out of phase ?

When the cone on the left is pushing, the one on the right is pulling.
Then the brain might decide the sound is coming from behind you.

what brain?

Someone with a brain, could, given the chance to work it out would know that what they are detecting is amplitude NOT phase when this occurs, this is how noise cancelling works it takes the unwanted signal inverts it (puts it out of phase) and adds.

or yuo coulkd tell me exactly what happens when you hear two signals out of phase by 180 deg, what tells you how far out of phase they are ?

Can you tell 180 from 90, from 135, I dout it as human brains can't all they can detect is amplitude or volume.

You can detect differncies but only in volume/amplitude you can NOT dertect what phase they are at.

No need to say woosh with you, it's pinned to your jacket.

On 19/12/2017 11:30, whisky-dave wrote:
So what in your head measures 180 ?

you have no idea, humans ears can detect amplidue/volume NOT phase.
if you add two signals that are in phase the sound beomes louder.

That is what you're ears are detecting the resultant amplitude and that is it.

I suggest you read the rest of that article you pointed us at the other
day. This one:


http://www.earlevel.com/main/1996/10...tion-of-phase/

Andy

On Tuesday, 19 December 2017 17:11:08 UTC, Dave Plowman (News) wrote:
In article ,
whisky-dave wrote:
On Tuesday, 19 December 2017 15:21:41 UTC, Max Demian wrote:
On 19/12/2017 11:23, whisky-dave wrote:
On Tuesday, 19 December 2017 10:58:34 UTC, The Natural Philosopher
wrote:

Bass performance of a pair of stereo speakers is seriously ****ed
if one is in antiphase. Mind you with subwoofers these days the
problem is less noticeable.

but you still can't tell phase, what you hear is amplitude NOT phase.

You only have one subwoofer so phase isn't a problem.

There's far more the frequencies than just sound or even base sounds.

But you have to remember many on here are so old they can only hear the
bass end. ;-) Add that to senility and you get some of the nonsense posts.


But this still doesn't explain wodney, I guess he's just unique but I'm guessing there's other words we could use ;-)

On Tuesday, 19 December 2017 21:17:56 UTC, Vir Campestris wrote:
On 19/12/2017 11:30, whisky-dave wrote:
So what in your head measures 180 ?

you have no idea, humans ears can detect amplidue/volume NOT phase.
if you add two signals that are in phase the sound beomes louder.

That is what you're ears are detecting the resultant amplitude and that is it.

I suggest you read the rest of that article you pointed us at the other
day. This one:


http://www.earlevel.com/main/1996/10...tion-of-phase/

Andy

Yes I have done thanks .
The human ear is insensitive to this kind of phase change of delay, as long as the delay is constant and we dont have another signal to reference it to.

On 19/12/2017 11:30, whisky-dave wrote:

8

you have no idea, humans ears can detect amplidue/volume NOT phase.
if you add two signals that are in phase the sound beomes louder.

That is what you're ears are detecting the resultant amplitude and that is it.




Stop repeating tripe.

An ear can't detect phase but you have two and they can detect delays
which has direct relationship to phase.

dennis@home wrote
whisky-dave wrote

you have no idea, humans ears can detect amplidue/volume NOT phase.
if you add two signals that are in phase the sound beomes louder.

That is what you're ears are detecting the resultant amplitude and that
is it.

Stop repeating tripe.

An ear can't detect phase but you have two and they can detect delays

Yep.

which has direct relationship to phase.

Nope.

On Wednesday, 20 December 2017 22:24:59 UTC, dennis@home wrote:
On 19/12/2017 11:30, whisky-dave wrote:

you have no idea, humans ears can detect amplidue/volume NOT phase.
if you add two signals that are in phase the sound beomes louder.

That is what you're ears are detecting the resultant amplitude and that is it.

Stop repeating tripe.

An ear can't detect phase but you have two and they can detect delays
which has direct relationship to phase.

he doesn't know tripe from trifle.

On Wednesday, 20 December 2017 22:24:59 UTC, dennis@home wrote:
On 19/12/2017 11:30, whisky-dave wrote:

8

you have no idea, humans ears can detect amplidue/volume NOT phase.
if you add two signals that are in phase the sound beomes louder.

That is what you're ears are detecting the resultant amplitude and that is it.




Stop repeating tripe.

An ear can't detect phase but you have two and they can detect delays
which has direct relationship to phase.

Doesn;t mean you are detecting phase or even delays.

On 21/12/2017 12:10, whisky-dave wrote:
On Wednesday, 20 December 2017 22:24:59 UTC, dennis@home wrote:
On 19/12/2017 11:30, whisky-dave wrote:

8

you have no idea, humans ears can detect amplidue/volume NOT phase.
if you add two signals that are in phase the sound beomes louder.

That is what you're ears are detecting the resultant amplitude and that is it.




Stop repeating tripe.

An ear can't detect phase but you have two and they can detect delays
which has direct relationship to phase.

Doesn;t mean you are detecting phase or even delays.




You need to get your ears and brain tested, they don't work!

On Thursday, 21 December 2017 14:33:46 UTC, dennis@home wrote:
On 21/12/2017 12:10, whisky-dave wrote:
On Wednesday, 20 December 2017 22:24:59 UTC, dennis@home wrote:
On 19/12/2017 11:30, whisky-dave wrote:

8

you have no idea, humans ears can detect amplidue/volume NOT phase.
if you add two signals that are in phase the sound beomes louder.

That is what you're ears are detecting the resultant amplitude and that is it.




Stop repeating tripe.

An ear can't detect phase but you have two and they can detect delays
which has direct relationship to phase.

Doesn;t mean you are detecting phase or even delays.




You need to get your ears and brain tested, they don't work!

You haven't a clue have you, your ears detect amplitude and frequency NOT phase.

If you walk past speakers and you can't hear anything does that mean that the signals are 180 deg out of phase or that the amp is off ?

On 21/12/2017 15:32, whisky-dave wrote:
On Thursday, 21 December 2017 14:33:46 UTC, dennis@home wrote:
On 21/12/2017 12:10, whisky-dave wrote:
On Wednesday, 20 December 2017 22:24:59 UTC, dennis@home wrote:
On 19/12/2017 11:30, whisky-dave wrote:

8

you have no idea, humans ears can detect amplidue/volume NOT phase.
if you add two signals that are in phase the sound beomes louder.

That is what you're ears are detecting the resultant amplitude and that is it.




Stop repeating tripe.

An ear can't detect phase but you have two and they can detect delays
which has direct relationship to phase.

Doesn;t mean you are detecting phase or even delays.




You need to get your ears and brain tested, they don't work!

You haven't a clue have you, your ears detect amplitude and frequency NOT phase.

If you walk past speakers and you can't hear anything does that mean that the signals are 180 deg out of phase or that the amp is off ?





Well if you walk past them they will only have a phase of 180 degrees in
a few spots so its easy to tell.


You really don't have a clue!

The phase changes with the distance and the frequency so if you move the
phase will change for some/all the frequencies ad they won't cancel out.

Why don't you attend some of the lectures where you work and learn
something.

"whisky-dave" wrote in message
...
On Thursday, 21 December 2017 14:33:46 UTC, dennis@home wrote:
On 21/12/2017 12:10, whisky-dave wrote:
On Wednesday, 20 December 2017 22:24:59 UTC, dennis@home wrote:
On 19/12/2017 11:30, whisky-dave wrote:

8

you have no idea, humans ears can detect amplidue/volume NOT phase.
if you add two signals that are in phase the sound beomes louder.

That is what you're ears are detecting the resultant amplitude and
that is it.




Stop repeating tripe.

An ear can't detect phase but you have two and they can detect delays
which has direct relationship to phase.

Doesn;t mean you are detecting phase or even delays.




You need to get your ears and brain tested, they don't work!

You haven't a clue have you, your ears detect
amplitude and frequency NOT phase.

Irrelevant to whether having one of pair
of speakers reversed is audible or not.

"dennis@home" wrote in message
...
On 21/12/2017 15:32, whisky-dave wrote:
On Thursday, 21 December 2017 14:33:46 UTC, dennis@home wrote:
On 21/12/2017 12:10, whisky-dave wrote:
On Wednesday, 20 December 2017 22:24:59 UTC, dennis@home wrote:
On 19/12/2017 11:30, whisky-dave wrote:

8

you have no idea, humans ears can detect amplidue/volume NOT phase.
if you add two signals that are in phase the sound beomes louder.

That is what you're ears are detecting the resultant amplitude and
that is it.



Stop repeating tripe.

An ear can't detect phase but you have two and they can detect delays
which has direct relationship to phase.

Doesn;t mean you are detecting phase or even delays.




You need to get your ears and brain tested, they don't work!

You haven't a clue have you, your ears detect amplitude and frequency NOT
phase.

If you walk past speakers and you can't hear anything does that mean that
the signals are 180 deg out of phase or that the amp is off ?





Well if you walk past them they will only have a phase of 180 degrees in a
few spots so its easy to tell.


You really don't have a clue!

The phase changes with the distance and the frequency so if you move the
phase will change for some/all the frequencies ad they won't cancel out.

Why don't you attend some of the lectures where you work and learn
something.

They wont let him, he has to clean the dunnys.

On 21/12/17 15:32, whisky-dave wrote:
If you walk past speakers and you can't hear anything does that mean that the signals are 180 deg out of phase or that the amp is off ?


It can in fact be either.

One of the memorable things my physics master did was to hook up a pair
of speakres to a sime wave generator, and march us out onto theh playing
fileds and order the class to 'stand wherever they couldn't hear the sound'

He then took a polaroid from the top of the cricket pavilion and showed
us the hyperbolic nature of the interference patterns.


Aprt from one rebel, who simply walked a mile away to the embankment to
go trainspotting, on the basis that he couldn't hear the sound there either.


--
No Apple devices were knowingly used in the preparation of this post.

On 20/12/2017 11:32, whisky-dave wrote:
On Tuesday, 19 December 2017 21:17:56 UTC, Vir Campestris wrote:
On 19/12/2017 11:30, whisky-dave wrote:
So what in your head measures 180 ?

you have no idea, humans ears can detect amplidue/volume NOT phase.
if you add two signals that are in phase the sound beomes louder.

That is what you're ears are detecting the resultant amplitude and that is it.

I suggest you read the rest of that article you pointed us at the other
day. This one:


http://www.earlevel.com/main/1996/10...tion-of-phase/

Andy

Yes I have done thanks .
The human ear is insensitive to this kind of phase change of delay, as long as the delay is constant and we dont have another signal to reference it to.

Good.

Now the point about a stereo audio system is that it has two speakers
playing closely referenced audio.

Which is exactly what the human ear can detect.

Andy