mrfeedback rattles windows

[mrfeedback]

Millwood, I do not understand your negative stance here.
I mentioned that I did a single 'easily reversible modification' to a complete audio system.

The outcome of eight experimental trials was that during four trials with the system temporarily modified, two particular windows rattled during exactly the same musical passages, and during four trials with the system in unmodified condition, no windows rattled during any part of the musical passages concerned.

The duration of this testing was around 25 minutes, no conditions internal to the house were changed, and the wind and the weather conditions outside did not change.

In my understanding the only difference accountable for the change in the audio output of the system sufficient to cause the windows to rattle was the one particular 'easily reversible modification' to the system.

Millwood, if you can, please explain to me how this 'easily reversible modification' showing 100% correlation with definitively observed aural artifacts should not be regarded as the causitive element.

Please also understand that this testing was held in the company of an extremely experienced and well regarded audio designer and long term audio manufacturer.

Eric.

[millwood]

Originally posted by mrfeedback
Millwood, if you can, please explain to me how this 'easily reversible modification' showing 100% correlation with definitively observed aural artifacts should not be regarded as the causitive element.

Eric.

that's too easy, Eric: my buddy, his barber and I did this yesterday in our house. Our windows definitely didn't rattle. Also, my neighbor said it was impossible for the windows to rattle, leads in or not.

so you see, sensible people say that it couldn't have happen so whatever you heard must be wrong.

End of the proof, .

You see, Eric, you cannot have it both ways. Either you come here with rigorous tests, or you don't have the rights to demand what you are demanding.

[mrfeedback]

"so you see, sensible people say that it couldn't have happen so whatever you heard must be wrong.
End of the proof"
Millwood, little do you know.
This event may be out of your comprehension, but be assured that it is perfectly real.

Eric.

[fdegrove]

Hi,

This event may be out of your comprehension, but be assured that it is perfectly real.

I fail to see any difficult part in here...

Repeat the test a few times at different places and if the same results crop up you have some basis for a statistic result...

Cheers,

[SY]

What you have there is still an anecdote. Now, you might be perfectly happy with what you've done and feel that, in your mind, the issue is settled. And that's absolutely your right. But you don't have an actual experiment or actual data; you've left some major variables uncontrolled and it cannot be replicated or otherwise verified.

If you want to do an actual experiment, I'll be happy to give you a protocol that includes better control of variables. If you follow the protocol, you could even get it published in a reputable journal and make a nice name for yourself. But if you're not interested in doing the hard and tedious work involved in doing a proper experiment, I completely understand. Not many people like to go through the process. Building stuff and listening to music is a lot more fun.

[mrfeedback]

Originally posted by fdegrove
Hi, I fail to see any difficult part in here...
Repeat the test a few times at different places and if the same results crop up you have some basis for a statistic result... Cheers,

Yes, that is actually done already, and with similar change in bass respose everytime.

Eric.

[fdegrove]

Hi,

What you have there is still an anecdote. Now, you might be perfectly happy with what you've done and feel that, in your mind, the issue is settled. And that's absolutely your right. But you don't have an actual experiment or actual data; you've left some major variables uncontrolled and it cannot be replicated or otherwise verified.

From a scientific POV? Certainly.

As I said before, never in my longstanding experience with audio have I been wrong in my aproach either, scientific or not ....
After so many years it almost becomes a science all of its own...

How does one prove scientifically that a Holco (NOS non-magnetic) resistor sounds mellow and dull?

Still to all and sundry it does...So is it or isn't it sounding dull?

Remember it's just a resistor and as such should have any other attributes.

I'm all for a scientific approach but the way I see it it's not science improving audio but listeners.

Sometimes you just need to think beyond commonly accepted knowledge to see what can happen...
I very much realise it's like walking on thin ice but so far I think we won already, like it or not.
The proof is in the history of audio over the past thirty years, scientific or not.

Cheers,

[mrfeedback]

Originally posted by SY
What you have there is still an anecdote. Now, you might be perfectly happy with what you've done and feel that, in your mind, the issue is settled. And that's absolutely your right. But you don't have an actual experiment or actual data; you've left some major variables uncontrolled and it cannot be replicated or otherwise verified.

Sure, right now I am relating an anecdote, and that will have to do for now.
Which are the 'major' uncontrolled variables that you mention ?.

If you want to do an actual experiment, I'll be happy to give you a protocol that includes better control of variables. If you follow the protocol, you could even get it published in a reputable journal and make a nice name for yourself. But if you're not interested in doing the hard and tedious work involved in doing a proper experiment, I completely understand. Not many people like to go through the process. Building stuff and listening to music is a lot more fun.

I fully intend to do full and verifiable testing in the near future, and yes probably publish it, and I don't consider this as work at all.
I intend in the next week or so to do some testing of several audio cables with real musical passages, and envision that I do sends and returns via a high quality outboard A/D-D/A convertor box and record to HD the returned passages.
I then intend to compare these files and then analyse the differences for spectral, amplitude and phase content.

Anybody have software that can do this ?.

Eric.

[SY]

Which are the 'major' uncontrolled variables that you mention ?.

Here's a fatal one: the guy who makes the judgement "rattle" or "no rattle" knows what cord is in place and (presumably) has control of the volume knob and other system/room variables.

How does one prove scientifically that a Holco (NOS non-magnetic) resistor sounds mellow and dull?

One way is a controlled listening test. A controlled listening test. A controlled listening test. Another is to do a controlled spectral analysis.

[faustian bargin]

what was that sound?

oh, it was the sound of a thread being jacked.

(not that it was a very useful thread to begin with)