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Your corection is accurate: I was writing from
memory- my memory for figures is just as poor as my arithmetics are
in general. My respect for medical research statisticians is
theoretical not, God forbids, hands on :
If the "golden ear" had really got 15 "hits" four times I
should have said that his score was a much better one namely 91% (my
calculator tells me) not 83% that I reported. Odd that you did not
include this in your account of my perfidy. Or do you make errors as
well sometimes?.
Here is Greenhill's table. If it is confusing blame Google. I tried
to arrange it cleanly but could not.
SUBJECTS: A B C D E F G H I J K
Test1: Monster vs. 24 g. wire,Pink noise
15 14 15 15 15 15 15 15 15 15 15
2. Same but levels matched
9 13 7 10 na. 8 9 6 14 12 12
3. Monster vs. 16 gauge zipcord, Pink noise
13 7 10 7 11 12 9 9 11 12 7
4.. 16 ga vs. 24 ga., Pink noise
15 15 na. 14 15 na 15 14 15 15 15
5. Monster vs. 16ga., choral music
4 6 11 8 9 5 5 7 6 10 10
6. Monster vs. 24ga, choral music
14 7 15 10 8 10 6 10 11 12 10
______________________________________________
% of "hits" in the total of 6 tests 90 tries:
> > 67. 50 40 33 40 40 33 33 50? 83 50
I am not prepared to lay my
life down for Greenhill's "golden ear"- once again the description is
Greenhill's not mine. Nor will I comment on your disagreement with his
statistics. The entire subject was thrashed out ad nauseam in the RAHE
2 years ago and I regret restarting it. While obviously you're not
bending over backwards to make allowances I have no quarrel with your
forum manners. I quoted Greenhill only as a bait to someone who
pontificated on the subject that he obviously knew little about. But
the topic brings out of the woodwork several creatures that I find
repulsive.
I note that you do not mention any ABX
component comparison studies that would meet your statistical
standards. Even the negative ones like Greenhill's or- dream on- just
one with a POSITIVE outcome.
Where is the research to validate the claims?
My comments are as follows:
1) Your comment that it is "no proof of
exceptional ability" is fair.The "golden ear's" performance may have
been sheer one time luck. ABXing I think fox the temporal lobes of the
brain. It does it to me. I find it funny that the ABXers are up in arms
when someone, just one man, is said to have done well when ABXing. They
should be cheering. Of course he inconsiderately did it comparing
cables and we know what cables are in the ABXers vocabulary.
2) All the panelists did well comparing
uneven diameter cables when pink noise was played to them. The scores
were much worse when music was used as a signal and became awful when
similar diameters were used. Oddly I'm interested in music not pink
noise.
3) I understand that 16 Gauge vs. 24
gauge over 50" means 1,70db volume difference. Six out of eleven
panelists failed to hear this difference in 5 (out of fifteen) tries
or more. I have, with my elderly ears, no difficulty hearing 1db volume
difference between the two speakers when my stepped volume control is
moved without my knowledge- but of course I'm not ABXing.
Ludovic Mirabel
Your corection is accurate: I was writing from
memory- my memory for figures is just as poor as my arithmetics are
in general. My respect for medical research statisticians is
theoretical not, God forbids, hands on :
If the "golden ear" had really got 15 "hits" four times I
should have said that his score was a much better one namely 91% (my
calculator tells me) not 83% that I reported. Odd that you did not
include this in your account of my perfidy. Or do you make errors as
well sometimes?.
Here is Greenhill's table. If it is confusing blame Google. I tried
to arrange it cleanly but could not.
SUBJECTS: A B C D E F G H I J K
Test1: Monster vs. 24 g. wire,Pink noise
15 14 15 15 15 15 15 15 15 15 15
2. Same but levels matched
9 13 7 10 na. 8 9 6 14 12 12
3. Monster vs. 16 gauge zipcord, Pink noise
13 7 10 7 11 12 9 9 11 12 7
4.. 16 ga vs. 24 ga., Pink noise
15 15 na. 14 15 na 15 14 15 15 15
5. Monster vs. 16ga., choral music
4 6 11 8 9 5 5 7 6 10 10
6. Monster vs. 24ga, choral music
14 7 15 10 8 10 6 10 11 12 10
______________________________________________
% of "hits" in the total of 6 tests 90 tries:
> > 67. 50 40 33 40 40 33 33 50? 83 50
I am not prepared to lay my
life down for Greenhill's "golden ear"- once again the description is
Greenhill's not mine. Nor will I comment on your disagreement with his
statistics. The entire subject was thrashed out ad nauseam in the RAHE
2 years ago and I regret restarting it. While obviously you're not
bending over backwards to make allowances I have no quarrel with your
forum manners. I quoted Greenhill only as a bait to someone who
pontificated on the subject that he obviously knew little about. But
the topic brings out of the woodwork several creatures that I find
repulsive.
I note that you do not mention any ABX
component comparison studies that would meet your statistical
standards. Even the negative ones like Greenhill's or- dream on- just
one with a POSITIVE outcome.
Where is the research to validate the claims?
My comments are as follows:
1) Your comment that it is "no proof of
exceptional ability" is fair.The "golden ear's" performance may have
been sheer one time luck. ABXing I think fox the temporal lobes of the
brain. It does it to me. I find it funny that the ABXers are up in arms
when someone, just one man, is said to have done well when ABXing. They
should be cheering. Of course he inconsiderately did it comparing
cables and we know what cables are in the ABXers vocabulary.
2) All the panelists did well comparing
uneven diameter cables when pink noise was played to them. The scores
were much worse when music was used as a signal and became awful when
similar diameters were used. Oddly I'm interested in music not pink
noise.
3) I understand that 16 Gauge vs. 24
gauge over 50" means 1,70db volume difference. Six out of eleven
panelists failed to hear this difference in 5 (out of fifteen) tries
or more. I have, with my elderly ears, no difficulty hearing 1db volume
difference between the two speakers when my stepped volume control is
moved without my knowledge- but of course I'm not ABXing.
Ludovic Mirabel