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  #731 (permalink)  
Old September 1st 06, 05:40 AM posted to uk.rec.audio
[email protected]
external usenet poster
 
Posts: 277
Default Too neat to waste...


Jim Lesurf wrote:
In article . com,
wrote:

Jim Lesurf wrote:
In article .com,
wrote:



It is entirely possible that my CD-Rs have colorations that are not
inherent in the medium.

OK. So this means that when you report hearing a difference, this
isn't in itself reliable as evidence that the CD *format* has
"inherent colourations". Just evidence that the specific CDs, etc, in
your comparison might have imperfections.


It is a modestly reliable indication that burning CD-Rs does not really
prove the medium to be transparent as has been suggested.


I have not used the term "transparent". I think someone else introduced
that. :-)



Into this thread? I did.




However I diagree with what you say. If you want to test if the *medium*
has any "inherent colourations" your initial phrase for this then the
test requirements for the results to be reliable and relevant as evidence
are different to if you wanted to simply see if a specific recorder and
discs were producing "coloured" results.



Fair enough. Let me know when yuo have some peer reviewed scientific
studies on the issue.




Alas, a problem here is that you still have not either given the full
details of the tests you keep referring to, nor defined the term "inherent
colourations" in a way that would allow us to clearly define a suitable
test.



It isn't a problem. I don't claim my tests were worthy of peer review
publication. But this is a problem you face with all tests that have
not endured peer review in a scientific journal. So in the absense of
such studies you really have nothing either way.




However as reported, the problem with your claim is that your obbservation
that a (some?) CDR copies could easily have come from an imperfection in
the specific system you used. Hence the results remain useless as a basis
for claiming they show "inherent colourations" - particularly as other
comparions show no sight of them.



My claim is that some objectivists have suggested I could prove for
myself that red book CD is audibly transparent by making CD-Rs of my
Lps and doing blind comparisons. I have done that and heard differences
so the suggested proof of transparency failed.



Your test results at present are unassessable. Hence they have no
determinable reliability at all, I'm afraid.



Pretty much like all the other non-peer reviewed tests of the subject.






OTOH we do have numerous industry pro that do controled comparisons
between redbook and other highe rez media and go on to claim that
redbook is a colored medium.

But should we accept something simply because some "industry pro"
asserts it? Or would it be better to examine the evidence to see if
they are right or not? :-)



If you wish to fund a proper scientific study for peer review publishing
more power to you. Until then we only have various anecdotes. IMO the
various anecdotes suggest the medium is not completely transparent. IOW
inherently colored. Could that conclusion be wrong? Yeah.


Indeed. :-) But we could form a better view if we knew the details of the
test you report. We could then at least assess what reliability and scope
the results might have.As I have said previously, the problem is not that
what you say is "anecdote". It is that you have still not given any of the
details anyone else would need to be able to decide what, if anything, your
assertions might mean.



As I hve said previously, unless you scrutinize all such claims the
same exact way regardless of the results it is of no value because you
are just stacking the deck. maybe if you show me that you have asked
the same of other people who have reported hearing no differences
between CD-Rs and originals then I may be satisfied that you are not
simply picking and chosing aecdotes based on whether or not you like
the results.




The problem is nothing to do with "funding".



No it has everything to do with it. Don't think so? Just fund a study.
Fund it and they will come (research scientists)




Nor about "peer review publishing" if you mean in an academic journal.

But it is about you providing the detail so that your "peers" (i.e. the
rest of us who you are talking to) can assess the basis you have for your
assertions for themselves.



No. There is scientifically valid evidence and there is anecdotal
evidence. there is no grey area between the two.





Is it a big
issue in terms of comparing the two media. Not in my opinion. I find it
interesting that some people would be so defensive of the medium. I
still say the best comparison one can make is by comparing the Boyk
recording of Pictures at an Exhibition on vinyl and CD. That will tell
you something about how each medium handles a SOTA recording of live
acoustic music that is quite demanding of hifi recording and playback. I
found the LP more realistic than the CD but they were both outstanding.


That is fine as it indicates that both formats can deliver good results.
But that isn't the same as making absolute assertions about CD having
"inherent colourations", etc.



I'm not so worried about it as you seem to be.








The rest, I am afraid, provides me no good clue to where else the
"inherent colouration" of a CD may lie.

Fair enough but what does that really mean? It doesn't mean the
colorations I describe are imaginary.

But you still have not actually defined them.



I have desribed them which is all I can do as a layman with an aesthetic
experience. If that does not work for you all apologies but that is all
I or any other layperson can really offer.


No, it is not.



Yes it is.


There is more you can do, both for us, and to help you to
express your own views. That is to give the details of the tests you did
that lead you to your views. We can then decide for ourselves.



I think you have already decided because you don't like the results.
Until you can show me otherwise I will not aid you in the picking and
chosing of your prefered anecdotes.




Nor given the specific details of the test that caused you to say the
exist.



I have already expressed my concerns regarding that. Until those
concerns are addressed I see no point in jumping into any debate about
the quality of my comparisons.


Can you say which parts of my response to that you were unhappy with?



I have a few times already.






One of the problems, for me, with 'subjective' reviewing is that it
seems to cause the reviewers to lose any interest in trying to
understand *why* things may (or may not!) sound as they do - at least
in terms of any rational or critical consideration. They seem to fall
into assuming this is all 'magic' which is beyond anyone's ability to
test or understand. Just trust their golden ears and all will be well.



I think you make a false dichotomy here. One can chose to not
investigate the underlying physical causes for ones aesthetic
impressions without claiming any paranormal activity.


One can. :-) Alas, the UK press often behaves otherwise.



I am quite nxious to see such a review that claims magic is involved. I
promise to condemn it.






The sad thing for me about this is that if they focussed on trying to
uncover the real reasons for things then the situation might be
improved.



I think that is the job o the makers not the reviewers.


Who will understandably address what the *reviewers* say in their magazine
comments. They will focus their attention on trying to deal with matters
which come up repeatedly in the magazines. To do otherwise may have a
negative impact on their image and sales, I'm afraid.



Possibly but free markets and freedom of speech and all.




Conversely, they may tend to neglect or not worry about areas which pass
un-noticed in the magazines.




They may if we buy bad stuff. I try to support the makers of good
stuff.



Scott

  #733 (permalink)  
Old September 1st 06, 07:42 AM posted to uk.rec.audio
Jim Lesurf
external usenet poster
 
Posts: 3,051
Default Too neat to waste...

In article . com,
wrote:

Jim Lesurf wrote:
In article . com,
wrote:



Absolutely they are different issues. unfortunately for we the
audiophile public they are not seperate issues in practice. If an LP
sounds better than it's CD counterpart it doesn't matter to us why.


It should. The point being that if you know *why* the two may "sound
different" then you may be able to shine a light onto those who make
them "different" as a result of ignorance or idiocy.


You must be kidding. so you expect consumers to give technical advice
to pros based on auditions? Sory that is ridiculous.


....and also not what I actually said. :-)

The only thing we can do is offer our aesthetic impressions.


Only if you decide to limit what you are prepared to do to such
"impressions". But that is your individual choice, not a limitation imposed
by the real world. :-)


The point here is that it is open to you, and to others, to do comparisons
and other tests which could be more than just an "aesthetic impression."
But this does involve engaging in the kind of process I keep explaining,
and requires people to give the details for others to assess.



Consider the possibility: If we and the magazine reviews set out to
identify why a CD "sounds different" to the nominally equivalent LP,
then we could use that knowledge to get them to improve what they
offer - perhaps for *both* formats.



Consider the possibility. The people making audiophile recordings are
already doing everything they can to make the best sounding CDs, LPs etc
and the big labels who produce the majority of crap sounding product
don't care about audiophiles that much because they represent such a
small piece of the pie.


That is certainly part of the problem. But the other part is that the
companies concerned tend to escape anyone detecting the specific and
correctable flaws in what they produce. The reason being the reviewers in
audio mags simply ignore poor recordings, and show no interest in finding
out why they are poor.

Also: Even those who are doing "everything they can" will probably still
be hoping to learn and improve their skills and levels of understanding.
For that process, reliable evidence and rational consideration may
well be helpful for them.


I am curious, what do you think you have to offer to Doug Sax, Kevin
Gray, Steve Hoffman, Dave Chesky, Kieth Johnson , Kavi Alexander etc etc
in the way of technical advice? yeah experts always benefit from
technical advice from the neophytes and armchair quarterbacks. not.


....but as you indicate above, the real problems are not with those who
apply skill and understanding to create excellent results. It is with the
companies why cynically or ignorantly produce lousy results - so long as
they can get people to buy them without realising they could be better if
made with care.

Or is your argument that such people are gurus who know all and never
will need to learn anything in the future?

I have no reason to think I could give them any specific advice. But
I assume that they would be open to any advice offered *provided* it
was given on the basis of relevant evidence and they could decide
for themselves how any tests or experiment that prompted the advice
were done. i.e. not simply a matter of "believe what gurus say, and
ignore anyone else you've never heard of."

Certainly my experience of other people in audio in the past was that
they were quite willing to consider evidence and rational arguments,
and to expect to continually learn. Up to them what they then agreed
with or not, though.

What advice can we give to those who apply care and understanding? Simply
to encourage them to go on doing so, and if we can help find issues that
might be useful, to do so.

What advice can we give to those who *don't*? To find out the reasons
their products are poor and give them the knowledge the lack, and to make
clear to them that we have identified what they are doing wrong and object
to it.

This isn't a matter of what I or you can do as isolated individuals. It
is something *we* can do if we promote understanding and are willing
to share evidence, experiment in critical and relevant ways, etc.

Of course, the people you mention may well have a level of skill and
understanding in some matters which exceeds your or mine. But this does
not mean that we can't consider what you report in the light of the
details of how you reach the conclusions you have asserted and come
to our own indivudual views of the reliability of what you claim.

So quoting the above list does not affect the status of what you or
I say.

Or was your meaning that what you say is authorised by some of the
people you list, and said on their behalf? Are you saying that when
you claim that that you have heard CDR copies of LPs, that they
made the copies and ran the tests you participated in?


It occurs to me to make another point about your question.

It seems to me to overlook much of the reality of the situation.

This is for two related reasons. Most of the recordings people
buy (and whose content they generally enjoy) weren't made by
the select band of people who have an 'audiophile reputation'.
Nor were the produced and delivered by a single person.

Most of the recordings people buy are made and distributed
on what could be called and industrialised process. This
may involve various stages where those involved had little
to do with the musicians or the studio, and may just want
to fullfill their job requirement to make x thousand copies
per week, and have them sell and not be returned.

In such processes is it quite easy to have a situation where
the musicians and those in the recording studio were skilled
and dedicated, and produced an an excellent recording - but
the product that is then sold the individual customer may
simply fail to match that.

The obvious example with LP was the way the factories often
produced discs which were scratched, damaged, shaped like
a fruit bowl, or had a 'center' sic hole that was well
away from the actual center of the groove spirals.

With CD the physical production tends to be less likely to
cause problems. But there may well be some mistake made in
between the original recordings sessions and the industrially
produced copies.

I recall that the buying of LPs was a frustrating process.
This was because if you wanted the performances of your
preferred artists you then tended to have to buy them from
the company who had them under contract. If that company
produced LPs that were made with a lack of care, it
would mean either putting up with an LP that had obvious
and annoying audible problems, or being willing to keep
returning them for replacement, searching for an acceptable
copy.

One of the things I like about CD is that it largely freed
me from the above annoyance. No more pops and crackles,
not more wildly off-center pressings.

If it was reasonable to return such LPs and tell the shop
or company why you were doing so, it seems reasonable to
me if people wished to do the same for a CD, or any format.
But this may involve more than saying "I don't like this".
It may help to be able to give a reason that would guide those
involved to focus on what they could do to reduce the rate
of returns.

Of course, some of those involved won't care, and won't amend
any poor practices. But others may well care, and also want
to ensure their future employment by trying to deal with any
problems which have been identified. In this way we can at
least try to support those who want to do a good job, and
show up those who do not.

BTW I note from the names in your list and your reference to
"quarterbacks" that you may have a USA bias in your list. :-)

It may be useful to point out that for some years I was involved
with one of the UK specialist labels. Some people here may be
familiar with the name of Mike Dutton. I can't say that I have
many 'audiophile' recordings. But I do have some which seem to
me to be excellent, and which deliver to me the ability to
enjoy the music they convey with no awarness that I am
using either a CD or an LP.

Alas, I also have both CDs and LPs which show clear audible
problems. Not all of these are due to the original musicians
or the engineers, etc, in the studio when the recording was
made.

Perhaps the situation is very different in the USA. I'm afraid
I can only base my comments on what I know of the situation
with music companies and magazines in the UK. Perhaps you
are unfamiliar with that.


You just have to be prepared to try and find it, not leave it as a
mystery. :-)



No we as consumers do not have to be prepared to do anything except
offer our aesthetic opinions. It is up the the folks making this stuff
to deal with it.


You may regard yourself only as a "consumer". That is for you to decide.

I regard myself as someone who is not just a "consumer". I also want to
understand what is on offer, and how it might be flawed, or could be
improved, and thus be more involved, and to learn. It also allows me to
some extent to discriminate and choose on the basis of some understanding,
not just on a case-by-case basis.

FWIW I have designed and tested audio equipment on both a professional
and an amateur basis over the years. I also still do so to a limited
extent, and try to report what I think I have learned or discovered.
I doubt I will appear in any lists of gurus as a result. :-) But I
do it because it interests me to do so, and I hope that some people
at least find the results useful or interesting as well.

I suppose it is largely because I like to understand things, and am curious
about how things work. But perhaps some people simply lack this curiosity.

Of course, even as a "consumer" I can reject items that are not fit for
purpose and identify the reasons when I do so. As Iain would probably
agree, some companies will take this seriously. Others may not, alas.



You can't fix a poorly mastered CD no matter how much you love the
medium.


Well, that would depend on what way it was "poorly mastered". However
if it is poor, and people can be specific, you can then use this
understanding to apply pressure on the company involved to do better
in future.


You can apply that same preasure without offering an uninformed
inexperienced opinion on why.


....or offer it on the basis of having some specific points for which you
have evidence others can assess for themselves, and is then public
knowledge - thus meaning that the recording companies will know that others
will considering the evidence as well, and may judge their reactions
accordingly.

The distinction here is simply saying the result is poor may give no
guide as to what might be done to make the next attempt better. But
trying to identify specific possible reasons, based on some evidence,
may well be very useful in allowing someone to deal with the reasons
and do better.


You can just cut to the chase and say what it is you like and dont like
abou what you hear. Guess what, A lot of us are already doing that with
the audiophile labels. What are you doing?


I am in part acting as a consumer with my own aesthetic preferences as you
describe. :-) However I am also trying to find out if there are any
specific engineering reasons which can then be used by others to help
inform their own choices, and provide useful feedback for those involved.


The folks I know who actually communicate with these companies, myself
included, offfer our praise and our dissatisfatcion on a title by title
basis. To offer some lame uninformed technical advice will most likely
lead to some laughs behind our backs and less regard for our opinions on
the quality of the product.


I am sure it would if what was offered was "lame uniformed advice". But
what if it was actually "useful and perceptive advice"?... :-)


Slainte,

Jim

--
Electronics http://www.st-and.ac.uk/~www_pa/Scot...o/electron.htm
Audio Misc http://www.st-and.demon.co.uk/AudioMisc/index.html
Armstrong Audio http://www.st-and.demon.co.uk/Audio/armstrong.html
Barbirolli Soc. http://www.st-and.demon.co.uk/JBSoc/JBSoc.html
  #734 (permalink)  
Old September 1st 06, 08:03 AM posted to uk.rec.audio
Jim Lesurf
external usenet poster
 
Posts: 3,051
Default Too neat to waste...

In article .com,
wrote:

Jim Lesurf wrote:
In article . com,



However I diagree with what you say. If you want to test if the
*medium* has any "inherent colourations" your initial phrase for
this then the test requirements for the results to be reliable and
relevant as evidence are different to if you wanted to simply see if a
specific recorder and discs were producing "coloured" results.



Fair enough. Let me know when yuo have some peer reviewed scientific
studies on the issue.



Afraid I am not clear why you want someone else to have published
something relevant in a peer reviewed journal before you are willing
to tell anyone about the methods you used. Are they secret for some
reason? I am afraid I still don't know what you are frightened of
here.

Perhaps you have misunderstood what I have been saying.

1) I have not been saying that CDs do *not* have any "inherent
colourations".

2) I have not been saying that your assertion about them that they do so,
and show a "loss of information" *is* wrong.

What I have (repeatedly) been doing is ask you to define what you mean
*and* to give the details of a test you say you have done and which leads
you to conclude what you assert from having compared CDR copies with an LP
original. The reason I have asked is so that anyone else who wishes (not
just myself) can decide for themselves what basis your claims may have,
or what your phrases actually mean.

Also the (repeatedly) point out that without the details of the test you
did, no one can really tell what your test actually showed.



Alas, a problem here is that you still have not either given the full
details of the tests you keep referring to, nor defined the term
"inherent colourations" in a way that would allow us to clearly define
a suitable test.



It isn't a problem. I don't claim my tests were worthy of peer review
publication.


You keep commenting on that. But I have not been asking you for evidence
that they *were* "worthy" of that. I have simply been asking for the
details so that the rest of us can make our own decisions, rather than just
having your assertions to go on. Why should we not be able to do so?


But this is a problem you face with all tests that have not
endured peer review in a scientific journal. So in the absense of such
studies you really have nothing either way.


....well we would, if you gave us the details of your test. :-)


However as reported, the problem with your claim is that your
obbservation that a (some?) CDR copies could easily have come from an
imperfection in the specific system you used. Hence the results remain
useless as a basis for claiming they show "inherent colourations" -
particularly as other comparions show no sight of them.



My claim is that some objectivists have suggested I could prove for
myself that red book CD is audibly transparent by making CD-Rs of my Lps
and doing blind comparisons. I have done that and heard differences so
the suggested proof of transparency failed.


OK. Well, as I have pointed out, until you give the details it probably
isn't possible for others to decide one way or another what meaning your
test results may have. The problem here isn't that a scientific journal
might refuse to publish the details. It is that you have not published
them, here, when invited to do so. Thus the lack of knowledge we have is
caused by your not making the information available. Your choice, not a
refusal of some unstated "peer review journal".

By refusing, you put your claims into the category of an "assertion
of belief" on your part which others are expected to accept as
an article of faith, or not.


Your test results at present are unassessable. Hence they have no
determinable reliability at all, I'm afraid.



Pretty much like all the other non-peer reviewed tests of the subject.


Again, the problem isn't a lack of any formal peer review. It is that you
have not yourself published the details. Thus the problem is of your own
making.


Indeed. :-) But we could form a better view if we knew the details of
the test you report. We could then at least assess what reliability
and scope the results might have.As I have said previously, the
problem is not that what you say is "anecdote". It is that you have
still not given any of the details anyone else would need to be able
to decide what, if anything, your assertions might mean.



As I hve said previously, unless you scrutinize all such claims the same
exact way regardless of the results it is of no value because you are
just stacking the deck.


I agree. That is why I tend to ask for details for any such claims where
the report seems of interest. Alas, people often react as you do, and
simply repeatedly assert their conclusion whilst not giving the
experimental basis of what they say. Lacking evidence others can assess,
this means, as you say, that any attempt to draw a meaningful conclusion
may have no value.

However it is open to you to give the details. :-)



The problem is nothing to do with "funding".



No it has everything to do with it. Don't think so? Just fund a study.
Fund it and they will come (research scientists)


But what has "funding" to do with you telling us the details of tests which
you have already done? :-)




Nor about "peer review publishing" if you mean in an academic journal.

But it is about you providing the detail so that your "peers" (i.e.
the rest of us who you are talking to) can assess the basis you have
for your assertions for themselves.



No. There is scientifically valid evidence and there is anecdotal
evidence. there is no grey area between the two.


That may or may not be so. But the problem here is that you have not given
us the details of your tests, so making it impossible for anyone to decide
what value or class would be appropriate for what you did. Thus we can't
even assess which side of the dichotomy you describe would be appropriate.




That is fine as it indicates that both formats can deliver good
results. But that isn't the same as making absolute assertions about
CD having "inherent colourations", etc.



I'm not so worried about it as you seem to be.


I am interested to see what, if anything, your claims might be based upon.
So far as I have had in response is that you have not given any useful
information upon which your assertions could be assessed.



The rest, I am afraid, provides me no good clue to where else
the "inherent colouration" of a CD may lie.

Fair enough but what does that really mean? It doesn't mean the
colorations I describe are imaginary.

But you still have not actually defined them.



I have desribed them which is all I can do as a layman with an
aesthetic experience. If that does not work for you all apologies
but that is all I or any other layperson can really offer.


No, it is not.



Yes it is.


Do you remember pantomime? :-)


There is more you can do, both for us, and to help you to express your
own views. That is to give the details of the tests you did that lead
you to your views. We can then decide for ourselves.



I think you have already decided because you don't like the results.


That is your (incorrect) opinion. However you can deal with this quite
easily if you give the details. Then, even if I criticised them, others
could read them and decide to support you. There is no need for you,
or anyone else, to accept anything I might say about the details
should you give them. The point here is that by giving them you
allow everyone to make up their own minds on the basis of being
able to assess the evidence for themselves. This means they can
then do this without having to agree with your opinions, or mine.


Until you can show me otherwise I will not aid you in the picking and
chosing of your prefered anecdotes.


Again, you seem to prefer to keep your own report as what you call an
"anecdote". As I have explained, you can do something about this if you so
choose... It you who keeps referring to your report as "anecdote", but it
is also you who is deciding not to provide what others would need to
decide for themselves. Your choice in both cases.




The sad thing for me about this is that if they focussed on trying
to uncover the real reasons for things then the situation might be
improved.



I think that is the job o the makers not the reviewers.


Who will understandably address what the *reviewers* say in their
magazine comments. They will focus their attention on trying to deal
with matters which come up repeatedly in the magazines. To do
otherwise may have a negative impact on their image and sales, I'm
afraid.



Possibly but free markets and freedom of speech and all.


Indeed. But a shame if the results misinform or misguide people. So ot
might be good as part of the same "freedom of speech" if we could bring a
more critical and analystic approach to bear, and make the results
available to people.

Slainte,

Jim

--
Electronics http://www.st-and.ac.uk/~www_pa/Scot...o/electron.htm
Audio Misc http://www.st-and.demon.co.uk/AudioMisc/index.html
Armstrong Audio http://www.st-and.demon.co.uk/Audio/armstrong.html
Barbirolli Soc. http://www.st-and.demon.co.uk/JBSoc/JBSoc.html
  #735 (permalink)  
Old September 1st 06, 08:40 AM posted to uk.rec.audio
Dave Plowman (News)
external usenet poster
 
Posts: 5,872
Default Too neat to waste...

In article . com,
wrote:
A good way to measure transparency would be to make multiple passes
through the recording chain to see what gets nasty. Given a CD you can
make copy after copy, through hundreds of generations if you wish,
without a single change in the sound that is produced at the far end.



That is a horrible way to prove it. I can make multiple copies of a low
rez image that looks like crap and it will not loose anything after
multigenerational copying.


Well, yes. Start out with crap and it's hardly going to improve. But if
you start with a high quality 'anything' any non linearity in the system
will be multiplied at each copy.

--
*Few women admit their age; fewer men act it.

Dave Plowman London SW
To e-mail, change noise into sound.
  #736 (permalink)  
Old September 1st 06, 08:44 AM posted to uk.rec.audio
Rob
external usenet poster
 
Posts: 84
Default Too neat to waste...

Jim Lesurf wrote:
In article . com,
wrote:

Jim Lesurf wrote:
In article , Iain Churches
wrote:


You can equally argue that manipulations are not necessary to record
onto CD - but in practice they may be applied for reasons which have
nothing to do with CD as a format per se. So there are two distinct
questions here. One relating to what is possible, or necessary. The
other relating to what people making such things actually do in
practice. You have already indicated that what you might do, or wish
to do, may not be what everyone who produces an LP or CD actually does.



Absolutely they are different issues. unfortunately for we the
audiophile public they are not seperate issues in practice. If an LP
sounds better than it's CD counterpart it doesn't matter to us why.


It should. The point being that if you know *why* the two may "sound
different" then you may be able to shine a light onto those who make them
"different" as a result of ignorance or idiocy.


Should?! This point has been debated at length here and elsewhere.
Nobody knows why the inherent sound of LPs can sound better than CD.
Unless you've been keeping something to yourself...

This, for me, is one of the key problems with the situation we have had in
(UK at least) audio for decades. The magazines tend to publish subjective
views which show no sign of the writers having even the desire to test or
understand what the real reasons might be for what they talk about. This
then is communicated to readers as being, "all magic and a matter of
opinion". As if it were like the weather, something to observe and comment
upon, but not expect to be able to control or do anything about.


I'd agree - but they do throw in technostuff to support claims. They do
often state a control element - whether it's right or wrong I couldn't
say. And the best we get from the technically inclined on this NG is
that technical specification as a guide to sound quality is simply a
dependent variable. Advice, quite rightly, tends towards 'have a listen'.

The reality is that LPs, CDs, etc, are all engineered and created. They are
as they are because that is how their makers made them. If there are
'differences' then they are in a position to examine them, deterimine why,
and deal with any problems.

But they won't bother if they can sell what they can make, and the reviews
and feedback show no signs to them that what they are doing should be
changed in some way.

Consider the possibility: If we and the magazine reviews set out to
identify why a CD "sounds different" to the nominally equivalent LP, then
we could use that knowledge to get them to improve what they offer -
perhaps for *both* formats.


There's no end of products that vinylise and valvify sound. Explanations
for their existence exist: the 'distortion'; the processing involved in
converting analogue to digital and then back to analogue; the CD
standard cannot capture all the sound, sub-LP standard transfer of
master recordings to CD, and a fifth - I'd bundle perception, the aural
experience (lack of understanding/appreciation), marketing, association
and a number of other intangibles that don't spring to mind.

Of course, this presumes we can establish that they *do* sound different,
and identify plausible reasons which can be tested. And to consider that
this may be case-by-case, not a sweeping praise of one format and damnation
of the other. Simply expressing subjective opinions in 'wine tasting' terms
may not help. Indeed, my feeling is that it has impeded both CD/LP
production and equipment for some years now.


It simply does.


Not so. If they differ, there will be a reason. You just have to be
prepared to try and find it, not leave it as a mystery. :-)

You can't fix a poorly mastered CD no matter how much you love the
medium.


Well, that would depend on what way it was "poorly mastered". However if it
is poor, and people can be specific, you can then use this understanding to
apply pressure on the company involved to do better in future.


IMO we the consumes need to support companies that make an
effort to master their releases with due care be it on CD SACD DVD-A
and/or LP.


I would agree. But that process isn't help by blanket and unspecific
praise/complaints on the level of general assertions about the "inherent"
properties of the formats. It can be done by more specific understanding,
based on understanding the engineering of them, and how specific instances
fall short of what is possible.


OK, but I'd prefer to work back from the experience of listening, rather
than forward from the electronic and mechanical components.

Rob
  #737 (permalink)  
Old September 1st 06, 12:06 PM posted to uk.rec.audio
Arny Krueger
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wrote in message
oups.com

My claim is that some objectivists have suggested I could
prove for myself that red book CD is audibly transparent
by making CD-Rs of my Lps and doing blind comparisons. I
have done that and heard differences so the suggested
proof of transparency failed.


As you admit Scott, your so-called tests are grotesquely contrived and
woefully executed.

It is far more indicative to take the most pristine high-resolution
recordings that one can obtain or make, subject them to the so-called
depredations of the redbook CD format, and then compare them to the
originals. This is also a far easier experiment to do.

As I have done many times before, I humbly point you at a complete
do-it-yourself kit for doing these experiements yourself, which can be
freely downloaded from http://www.pcabx.com/technical/sample_rates/index.htm
..

However Scott, being a completely predictable twit, you'll again bite the
hand that reaches out to assist you in your mental muddle.


  #738 (permalink)  
Old September 1st 06, 12:09 PM posted to uk.rec.audio
Arny Krueger
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Default Too neat to waste...

wrote in message
ups.com
Don Pearce wrote:
On 31 Aug 2006 09:28:43 GMT, John Phillips
wrote:

No-one has (as far as I know) yet provided even a
credible hypothesis for other issues with transparency,
never mind any evidence.


The question of transparency of the CD goes in another
direction too. That would be how accurately you can get
back what you record on it. From that point of view it
has to be said that it can be entirely transparent. If
you use a programme like Exact Audio Copy it will tell
you how many errors it has found, and how it has dealt
with them. All my CDs return zero errors, so they are
transparent.

So is the question really nothing to do with CDs, but
one of how transparent 16/44.1 coding is? I suspect this
to be the case, even though it hasn't been posed that
way.

If your measure of transparency is how close to the
original signal the output of such a system is, then the
answer is again, very transparent. Indeed it is far more
transparent than any analogue means of recording.

A good way to measure transparency would be to make
multiple passes through the recording chain to see what
gets nasty. Given a CD you can make copy after copy,
through hundreds of generations if you wish, without a
single change in the sound that is produced at the far
end.



That is a horrible way to prove it. I can make multiple
copies of a low rez image that looks like crap and it
will not loose anything after multigenerational copying.


What you don't understand Scott, is the basic low resolution of any auidio
recording made by conventional means (IOW, a microphone in a room). So as
you profusely whine about the problem, you don't understand where it comes
from. Therefore, you live in a logic-proof box.

BTW Scott, if you don't like reality, why not sue me again? LOL!


  #739 (permalink)  
Old September 1st 06, 12:12 PM posted to uk.rec.audio
Arny Krueger
external usenet poster
 
Posts: 3,850
Default Too neat to waste...

"Dave Plowman (News)" wrote in
message
In article
. com,
wrote:
A good way to measure transparency would be to make
multiple passes through the recording chain to see what
gets nasty. Given a CD you can make copy after copy,
through hundreds of generations if you wish, without a
single change in the sound that is produced at the far
end.



That is a horrible way to prove it. I can make multiple
copies of a low rez image that looks like crap and it
will not loose anything after multigenerational copying.


Well, yes. Start out with crap and it's hardly going to
improve. But if you start with a high quality 'anything'
any non linearity in the system will be multiplied at
each copy.


The irony is that Scott has his facts right, he just doesn't understand how
prevalent the problem is.

*Any* recording made by conventional means (a mic in a room with a musical
instrument) is inherently low resolution, compared to the precision of
modern recording devices.

So, even many those LPs that Scott worships have audible room noise, and
measurable noise from mics, mic preamps, etc.


  #740 (permalink)  
Old September 1st 06, 12:16 PM posted to uk.rec.audio
Arny Krueger
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Posts: 3,850
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wrote in message
ups.com
Jim Lesurf wrote:
In article

. com,
wrote:

Jim Lesurf wrote:
In article
, Iain
Churches wrote:



You can equally argue that manipulations are not
necessary to record onto CD - but in practice they may
be applied for reasons which have nothing to do with
CD as a format per se. So there are two distinct
questions here. One relating to what is possible, or
necessary. The other relating to what people making
such things actually do in practice. You have already
indicated that what you might do, or wish to do, may
not be what everyone who produces an LP or CD actually
does.


Absolutely they are different issues. unfortunately for
we the audiophile public they are not seperate issues
in practice. If an LP sounds better than it's CD
counterpart it doesn't matter to us why.


The perception that LPs sound better than a comparable CD a significant
percentage of the time is based on lies and prejudice.

It should. The point being that if you know *why* the
two may "sound different" then you may be able to shine
a light onto those who make them "different" as a result
of ignorance or idiocy.


LP bigots like Scott interpret any CD that sounds different from the
corresponding LP as "sounding bad". They are deaf to the audible noise and
distortion that is inherent in the LP format.

You must be kidding. so you expect consumers to give
technical advice to pros based on auditions?


Just say no to bad-sounding recordings, but first what music really sounds
like.


The only thing we can do is offer our
aesthetic impressions.


...which are as a rule poorly-informed.

You get a finished product with no
reference other than other commercial versions of the
same thing.


That's your problem.

The best we can do is report what we hear and
leave it to the makers to deal with it.



First Scott, inform yourself that music doesn't come with the audible noise
and distortion of the LP format built-in at the source.


 




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