Of $90,000 turntables, Stradivarius violins, red wine, and blindfolds
On Wednesday, April 16, 2014 10:39:04 AM UTC-7, news wrote:
What Scott says may be true, but when you do it blind you remove all of=
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those prejudices. But remember there are (at least) two kinds of blind=20
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tests, difference tests and preference tests. For a wine tasting, you cou=
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either ask them their reactions and preference toward two unknown samples=
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(preference testing), or you could simply ask them if they can tell ANY=
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difference between the two.
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HOWEVER, it is not sufficient that they tell you whether they can tell a=
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difference, they must prove it in a statistically significant manner by=
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doing it at least 16 times, because if they only guessed one time it coul=
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be luck. So, for example, if they can tell the white from the red, or the=
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fancy from the table wine, at least 12 out of 16 times (95% level of=20
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confidence) then they would have proven that there is a difference, but n=
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a preference. If they can't even do THAT, then not only could they not ha=
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a preference, but they cannot even tell under blind conditions whether th=
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is any difference between the two at all.
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The obvious connection to audio is if someone is trying to sell me a $15,=
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set of speaker cables, the easiest way for him to prove that he can hear =
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improvement with his own product would be to test his ability to tell a=
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difference between them under blind conditions. If he can't even do that,=
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then he cannot convince me that he hears an improvement with his fancy=20
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wires. Of course I could take the same test, but if I flunked it he would=
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just give the standard phrase, well you can't hear it but I can. So you m=
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him put his ears where his mouth is.
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The subjectivist audio press comes out with endless prose and poetry abou=
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what they hear in the latest products, but it is totally meaningless if i=
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is done under sighted conditions.
No, it is not "totally" meaningless. yes it is flavored with sighted bias. =
But honestly so are your personal perceptions of your own stereo. Does that=
make your perceptions meaningless? You have talked about those perceptions=
at length and have come up with some very unconventional beliefs on stereo=
playback based on those perceptions.=20
They will never say "well, this new=20
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$50,000 amplifier is certainly the same as all other decent amplifiers."=
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That wouldn't show the fineness of their hearing or advance their magazin=
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sales.
So why did Stereo Review/Sound and Vision say just that for all those years=
? By the way, you don't know that those unnamed 50,000 dollar amps sound th=
e same as all other "decent" amps. (whatever you may mean by "decent" amps)
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But most of us know all that. Just saying for the benefit of the newbies=
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lurking in.
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Yeah me too.=20
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