Switching labels does nothing as he is going to email his results, no one needs to see the cables again.If the cables are IDENTICAL except for half burned in and half not, how do we know he doesn't just switch the labels around to his benefit?
Edit: Oh I see SY has already addressed this
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Perhaps Andre can testify if he ever had this experience, where he just couldn't tell whether a cable was new or burned-in? Anybody else?
As long as the same cables isn't used over and over for testing 😀, only 'burned-in' and 'new' should be fine.
As long as the same cables isn't used over and over for testing 😀, only 'burned-in' and 'new' should be fine.
For the record, Andre, I'd like to express my respect for you for doing this. You, sir, have mucho balls.
jd
Sure, just took on a contract with Neutrik, ordered a few doezen of these,
An externally hosted image should be here but it was not working when we last tested it.
You want me to take a share of the cost as promised? Send me your paypal.
jd
Fredex: There may or may not be 5 of each. Each individual cable is either broken in or not broken in randomly- it's like when you flip a coin 10 times, you may or may not get exactly 5 heads or tails.
But the statistics for the proposed test method are different. The samples choosen wouldn´t be put back in the bowl for the next guess, so the chance for correct guessing varies for every trial.
Wishes
Edit: Ah, i see it´s not any longer to pick 5 out of ten, as he will not know how many cables were burned in. Sorry.
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But the statistics for the proposed test method are different. The samples choosen wouldn´t be put back in the bowl for the next guess, so the chance varies for every trial.
Wishes
Yes, that was exactly my point- each cable is RANDOM, and independently so. So each guess is a 50/50 shot.
@ scott wurcer
Thanks....
See what you mean! Quite similar to this thread really......plenty of Comet Heads etc.
Just LOL re Polo and affording a horse!!
Thanks....
See what you mean! Quite similar to this thread really......plenty of Comet Heads etc.
Just LOL re Polo and affording a horse!!
Yes, that was exactly my point- each cable is RANDOM, and independently so. So each guess is a 50/50 shot.
The original idea of 5 burned in to pick out of ten is appealing too.
4 correct identifications would be significant on SL=0.05 niveau.
Wishes
Although a reasonable way to structure it, that adds sort order in as a variable. 10 independent events have fewer variables.
Natural distribution of heads in 10 cointosses:-
w
An externally hosted image should be here but it was not working when we last tested it.
w
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No, I did not miss that part. Do you honestly think though that he may answer "Nope, can't hear a difference." Thereby canceling the rest of the test, and admitting to his error? (if I read the plan correctly, which apparently I'm having trouble doing)Did you miss the part that said this would be a first trial?
I would say that outside this forum it will not be taken seriously, unless it can be independently and easily established that scientific method was followed. The 'wiki' idea is good, at least we can continue to refine until we know it is a clearly objective test."...if we manage to get the test done properly, no matter what the result will be, years later people will still read about the test..."
Apparently not. My impression is that there are far too many variables thus far which have not been anticipated, or accounted for. Secondly, there may be issues with statistical viability. (sample and guess sizes not being large enough etc.) Perhaps I should just stick to reading the wiki as it evolves. I'll go back and try reading it all again.Oatmeal - Do you really not understand this simple test?
I'll go back and start again, then. Apologies if I have jumped to erroneous conclusions.Starting with you. Try actually READING the suggested protocol. Moving labels around can't help a bit. And the "half" part is also not necessarily true.
I do however think this would be vastly easier if a proven and accepted method were at least used as a blueprint, and then modified, rather than making it up as we all go along. There is too much which can go wrong, and render the test useless.
Although a reasonable way to structure it, that adds sort order in as a variable. 10 independent events have fewer variables.
In which way?
If i got it correct, Andre would just receive a batch of ten and no special presentation order is specified or needed.
Or do you mean the statistics?
Wishes
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Yes, the statistics. For example, if I have chosen 4 as (say) "burned in," then I know that only one of the remainder can be "burned in" even if the remainder is 6.
Yes, yes, and no, in that order.
Do you honestly think though that he may answer "Nope, can't hear a difference." Thereby canceling the rest of the test, and admitting to his error?
Yes, yes, and no, in that order.
Remember Andre, 10 out of 10 and maybe none of them are broken in. ;-) See how the game changes?
But if it's as audible as you say, it ought to be like picking out red bits of paper from pink ones.Remember Andre, 10 out of 10 and maybe none of them are broken in. ;-) See how the game changes?
It should be simple for you to do, pretty much error free. -Regardless if it's one, one hundred, or one thousand attempts.
At least that's what I'm inferring you believe you can hear from your previous posts.
Remember Andre, 10 out of 10 and maybe none of them are broken in. ;-) See how the game changes?
I would vote for at least one cable broken in.
@ SY,
statistically it wouldn´t be a problem as you have only to look for the "best case" for guessing. It´s the old lottery wheel game without putting back.
For the best case chance for guessing the correct number is highest, for the other lower. That´s why 4 (from 5 out of ten samples) correct identifications would be sufficient for p<0.05 .
@ John Curl,
for 10 trials 9 correct answers would be sufficient.
If the number of "burned-in" cables is choosen by flipping coins, both zero and ten "burned-in" would be quite unlikely.
As Andre would receive a "burned-in" and a "unburned-in" clearly labeled he will be able to do a paired preference test (A/B comparison).
I´d tend to the original idea (picking 5 out of ten) intuitively but don´t think that the new idea is unfair.
Wishes
statistically it wouldn´t be a problem as you have only to look for the "best case" for guessing. It´s the old lottery wheel game without putting back.
For the best case chance for guessing the correct number is highest, for the other lower. That´s why 4 (from 5 out of ten samples) correct identifications would be sufficient for p<0.05 .
@ John Curl,
for 10 trials 9 correct answers would be sufficient.
If the number of "burned-in" cables is choosen by flipping coins, both zero and ten "burned-in" would be quite unlikely.
As Andre would receive a "burned-in" and a "unburned-in" clearly labeled he will be able to do a paired preference test (A/B comparison).
I´d tend to the original idea (picking 5 out of ten) intuitively but don´t think that the new idea is unfair.
Wishes
No one that I know has said that cable break-in is very audible. It is just sometimes audible with the right audio equipment and the right audio wires. It is like the difference between a good wine and a great wine. To a wino, there will be very little difference. To a wine buff, there may be a great difference, yet the wine buff might be fooled, on occasion, or by direct manipulation.
spoilsport
ya know... you ought to take some of your own medicine and read up on multivariable statistics... you'd realize just how ridiculous your ridicule of others and these efforts looks... not to mention your lame attempts at discrediting others credentials... and the badgering with "read the book" comments... really sad
While I might respect the innovations in your amplification designs over the decades, I certainly see now your contentious and contemptuous demeanor clouds your ability to apply your knowledge to other endeavors...
Remember Andre, 10 out of 10 and maybe none of them are broken in. ;-) See how the game changes?
ya know... you ought to take some of your own medicine and read up on multivariable statistics... you'd realize just how ridiculous your ridicule of others and these efforts looks... not to mention your lame attempts at discrediting others credentials... and the badgering with "read the book" comments... really sad
While I might respect the innovations in your amplification designs over the decades, I certainly see now your contentious and contemptuous demeanor clouds your ability to apply your knowledge to other endeavors...
Well, some of us know how to design audio, and we tend to keep an open mind about things like cable differences. Others, in related fields, might think that they are experts in audio as well, and they claim without even trying, much of the time, that something is impossible.
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