Re: Cables again. For Arny, et al.On Thu, 21 Feb 2008 15:07:26 -0800, Arny Krueger wrote
(in article <fpl07e01bi2@news1.newsguy,com >):
> "Sonnova" <sonnova@audiosanatorium,com > wrote in message
> news:fpigha02o8g@news3.newsguy,com
>> On Tue, 19 Feb 2008 18:15:35 -0800,
>> dpierce.cartchunk.org@gmail,com wrote (in article
>> <fpg2g7021ju@news3.newsguy,com >):
>>
>>> On Feb 17, 5:41 pm, Sonnova
>>> <sonn...@audiosanatorium,com > wrote:
>>>> I still don't think so. As I just outlined for Bob in
>>>> another post, the things over which the mastering
>>>> engineer has direct control are on the mechanical end
>>>> of the process, not on the signal side. And those
>>>> things are unlikely to affect the sound in any way from
>>>> disc to disc or day to day.
>>>
>>> Well, you might want to, then argue the meaning of
>>> "mastering" with Bob Katz. See, the second edition of
>>> his book "Mastering Audio: The Art and Science" was just
>>> published and maybe 99%
>>> of the book deals with stuff that has nothing to do with
>>> the "mechanical end of the process." Indeed, most of
>>> what he deals with have DIRECT effect on the way the
>>> final disk sounds.
>>
>> I don't doubt it. But all of those things are done
>> because of the mechanical limitations of the process, not
>> of the source material.
>
> That's not always the case. Subjective tastes are usually addressed at the
> same time. No matter what you have heard, the process is not entirely
> automated. Yes, some automated equipment may be used, but as a rule the
> operational parameters of some or all of the equipment are set by ear.
>
>>> Though you might dispute the point with Mr. Katz, had I
>>> the opportunity to wager on the outcome of said dispute,
>>> you, hopefully, won't take offense on who I might choose
>>> to
>>> place my bet on.
>
>> Place your bet on who you like. There is little that one
>> can do in the chain between the master tape and the
>> record master that would alter the sound of similar
>> master tapes from master disc to master disc.
>
> Sure there is - all of the equipment that is in that chain has adjustements
> that can audibly affect sound quality.
>
> If you are so sure of what you know, name the equipment that would be used
> in that application, and show that it lacks operator adjustments that can
> affect sound quality.
Acceleration limiters are calibrated to the cutting head as are the headrooom
limiters. Once set they aren't touched until the head is changed. The inverse
RIAA network is fixed. Of course the gain is variable, but as long at it is
used to to keep the cutting head out of the mud and below the limiter
threshold, it shouldn't affect the sound, just the volume. Running the signal
into limiting, will, of course, result in distortion, but you don't want to
go there. No mastering engineer does. Other than that, its mostly about
volume. The louder the better (that vinyl S/N thing, you know), but you have
to understand the limitations. Low frequencies make for large cutting stylus
excursions and large excursions can cut through the groove wall into an
adjacent groove (called overcutting). Thus most commercial record cutting
systems have a another tape pickup head if front of the actual pickup. It's
duty is to tell a computer what the frequency response and dynamic
distribution of the signal that's coming (and delayed by only a few
milliseconds) so that the groove pitch on the record can be closed down or
opened up. The mastering engineer can override this, but there's little
reason to do so. After all, we're trying to do a balancing act here of
optimizing the amount of program that fits on the a side against the need to
limit groove excursions for S/N concerns, overcutting, and trackability.
There is little use making records that the average record player cannot
track. In my experience, most of the variability in the sound quality that
one can get from a single lathe is in the cutting masters. These tapes vary
so much that the same lathes can produce records that sound anywhere from
spectacular to downright unlistenable. When I worked at Century, many years
ago, we'd get everything from high-school bands to polished municipal
symphony orchestras. The quality was all over the place, yet little if none
of that variability came from the cutting process.
>> I have mastered more than my share of records in my time, I know
>> what would affect the sound of the finished disc and what
>> wouldn't. Almost all of the things that would affect the
>> sound of a record have to do with the limitations of disc
>> cutting and transferring sound from a medium with a
>> greater dynamic range than the final disc, and these are
>> pretty much the same from disc to disc.
>
> "pretty much the same" is a very vague statement and allows for changes that
> would cause audible differences.
That's because, like I said, the master tape was far more variable than the
cutting process.
> The whole reason why recorders that are remastered are advertised as such,
> is because remastering with a different operator and different equipment can
> reasonbly be expected to cause audible differences.
That's true. But the type of difference I'm talking about (getting back to
the original premise of this thread) is that the reviewer heard differences
in overall clarity, you know, the proverbial "veils" being lifted. These are
the types of differences that a cutting room setup would not cause (my
original premise), as far as I know, unless they were on the master tapes to
begin with or, some components in the cutting chain were changed. In the
latter case, re-cabling could effect such a change if some of the connections
had become dirty or corroded, and the new cable freshened them. A new
(actually they're rebuilt) cutting head would be the component most likely to
be changed in a working cutting room setup between sessions. New cutters have
to be EQ'd or "normalized" when installed and a good cutting engineer can do
that in such a way that nobody can tell that the head's been changed - but it
takes commitment and a lot of talent and work to do so.
>> Now the tapes may
>> be wildly different, but that's another story. I suspect
>> that Rudy Van Gelders master tapes sounded very similar
>> from artist to artist.
>
> The obviously sounded different because they involved different artists.
> What you seem to be saying is that there was a "Van Gelder Sound" that was
> never audibly different. If it was never audibly different, then there were
> never any adjustements to the equipment that was used during the mastering
> phase, and if that were so, why would Mr.Van Gelder's services be needed if
> the equipment was unchanged?
I never said that the Van Gelder sound was never audibly different. I assert
that there is a recognizable "Van Gelder Sound".
I record, at present, a jazz band, a wind ensemble and a symphony orchestra.
I use different mikes and different mike techniques for each, yet, the
overall sound I get from each is very similar because I strive for the same,
consistent results. I strive for big soundstage, good image specificity, and
wide dynamic range. Others might gain-ride to keep the overall level of the
recording high, but my recordings require a lot more volume control on
playback because I DON'T gain-ride or use signal processing of any kind. Low
level passages are, indeed, low level and loud passages are really loud, but
because I NEVER reduce the gain of high level passages, and because I try to
stay well clear of "0" Vu (-3 dB is my absolute peak) the overall average
level of my recordings is around -20 dB.
I've heard many of Van Gelder's recordings and a have number of them both on
vinyl and on JVC's XRCD series CD. He had a distinct sound; one that had many
characteristics in common from recording to recording. This characteristic
sound likely resulted from the use of the same equipment chain, same
microphones, same mixer/pre-amps, same tape deck and to a certain extent
(especially the later ones) same recording venue. The differences between his
various recordings do not include differences in recording clarity,
distortion, or gross variances in frequency response from session to session.
--
Do you know the difference between students like you, amateurs and
professional jazz musicians? Student bands and amateurs "almost" swing!
Fred Berry
Professor of Music
Stanford University