[pianotech] Octaves & Unions

Israel Stein custos3 at comcast.net
Mon Feb 7 23:07:16 MST 2011


Well, let's see if we could clear up a 
few misunderstandings...

On 11:59 AM, John Formsma wrote:
> On Mon, Feb 7, 2011 at 10:02 AM, Kent 
> Swafford <kswafford at gmail.com 
> <mailto:kswafford at gmail.com>> wrote:
>
>
>     KS
>     One possibility is the fact that
>     you use a specific ETD that I
>     determined about a dozen years ago
>     is not the one that is best suited
>     to my needs.
>
>
> JM
> And you were using which one? OnlyPure 
> or RCT?

Thanks for clearing this up, John. I am 
familiar with the Accutuner and the 
Cybertuner. I see that in a response to 
your question this got cleared up even 
more. Well, it doesn't really matter, 
but I am not going to run out and buy 
OnlyPure for the once-in-a-blue moon 
that I get to do a real recording 
session (see below) when my Cybertuner 
and ears do me fine...

>     That said, I reject the notion
>     that the 15 minute touch-up is a
>     special or unusual situation. Take
>     for example the tuning I completed
>     this morning:
>
>     Many tunings are done with an
>     absolute deadline. I strongly
>     suspect that your 15 minute
>     recording studio touch up closely
>     resembles the last 15 minutes of
>     any tuning done on deadline.
>
>     The 1098 I tuned this morning was
>     right at the margin of needing a
>     pitch correction, so the final
>     refinement pass included the
>     possibility that sections of the
>     piano had drifted, just like your
>     recording studio situation.
>
>
>
> Maybe I'm misreading this, but it 
> seems that this is a slightly 
> different situation than what Israel 
> meant. It appears that you were 
> already seated at the piano, had 
> completed the first pass, and were 
> going back over it to refine.

John - you are essentially right, but 
for several different reasons. First 
let's discuss what I mean by "working a 
recording session". I don't mean tuning 
the piano in the morning - and perhaps 
coming back in the afternoon, or the 
next day, or two and a half days later 
to "touch it up". This I would treat as 
any other tuning - use whatever tools I 
have available (including the ETD) to 
get the best tuning that I can, in the 
time allotted - without regard to 
anything else. Under such circumstances, 
I figure that the original tuning has 
been messed up enough by the time I am 
(or someone else is) back for the 
touchup, they will have issues with 
splicing no matter what I do or don't do.

"Working a recording session" is what (I 
think) Dave Doremus was referring to - 
getting paid for being in attendance 
throughout the recording session, no 
matter how many days (or nights) it 
takes. This is how I got into this line 
of work - the sessions went a lot longer 
than planned, started interfering with 
the primary tuner's life in a big way - 
so they had to provide a substitute. I 
was available, and - apparently - they 
felt they could trust me. When I did 
sessions myself, I would tune the piano 
before anyone got there (using my 
ETD-du-jour as needed) and then stand 
by. I have no idea how the piano was 
tuned when I subbed for a predecessor - 
all I had is my ears to find out what 
kind of basic tuning I was dealing with. 
And several times it was made clear to 
me that as long as they are still 
recording the same movement or the same 
short piece - I should take the 
minimalist approach and avoid moving 
strings unless absolutely necessary and 
then as little as necessary. So I would 
sit there, read a book, listen to the 
music... Sometimes they would ask me to 
turn pages...

I get called upon to do a  " quick check 
and touch up" for one of two reasons:

1. The musicians (or one of the 
musicians) "hit the wall" in the middle 
of recording a movement - they can't do 
what they want without a break. They 
don't want to break for too long - maybe 
ten, fifteen minutes, just to get 
re-focused (without losing momentum...) 
I want to be done by the time they are 
ready to go again...

2. Someone hears something that bothers 
them. So I am supposed to come in there 
and fix 'the false note" while the 
pianist is sitting there and watching - 
and (if it's chamber music) so are the 
string players. This is where I have to 
fix what bothers them as fast as 
possible - and get the "H" out of there, 
so that they can resume their work, and 
keep the interruption to a minimum so 
that they don't lose momentum. Not a 
good time to be setting up the 
machinery. And I don't know how much 
good it will do me for fixing a note or 
two...

So:

> That 15 minutes is different than 
> having 15 minutes to get in and get 
> out. Viz.,
>
>    1. You already had the tuning file
>       open and had just used it
>    2. The piano case was already open
>    3. Your tools were already out and
>       availableThough I don't have to
>       do any recording tuning or
>       concert touch-up work, I can
>       envision that a 15-minute
>       touch-up might involve only 10
>       minutes of "intimate" time with
>       the piano. I would imagine:
>
>    1. Arriving and having to extricate
>       tuning gear, including the ETD
>       opened to your saved file,
>       mutes, and lever (maybe you
>       could already have these in hand)
>    2. Opening the piano case
>    3. Assessing where the worst
>       offenders are, and dealing with
>       them first.
>
The main problem here is having to go 
from zero to sixty tuning-wise (no 
matter what method one uses) with no 
"warm-up", after sitting around for an 
hour or more. Having done a pass or two 
in preparation for this 15 minute "final 
pass" has you going at full tilt - 
having to go in cold and get 
"up-to-speed" to do what amounts to a 
final pass is a whole different 
experience. So yes, in a 15 minute touch 
up, some time is spent "getting up to 
speed".

>     As one goes through the scale,
>     drift is immediately apparent by
>     watching the display; as long as
>     the drift is relatively uniform
>     without sudden changes,
>
>
> Conceded, but in 15 minutes can one 
> even be concerned with "relatively 
> uniform" drift? That's what we'd have 
> to do aurally. I would think the only 
> reasonable expectation in a touch-up 
> is dealing with individual strings 
> and/or notes that have drifted.
>
>     the drift may not be particularly
>     audible in aural checks, so there
>     may be no absolute need to retune
>     just to suit the display, nor to
>     (off)set the machine. 
>
>
>
> I guess maybe it depends on how fast 
> aural tuners can interpret the aural 
> checks they hear. When I'm in "fast 
> and furious" mode, I can hear faster 
> than I could play and look at an ETD. 
> I think that's what Israel meant 
> (although certainly not trying to put 
> words in his virtual mouth).
>
>
> And it seems that if you're not 
> correcting for drift, you're sort of 
> guesstimating how to make your ETD 
> "corrections" (since no offset was 
> selected). Drawing from my past 
> experience with ETD, you'd probably 
> tune so the spinner (or functional 
> equivalent thereof) would be as "off" 
> as its neighbors. Which is essentially 
> what an aural tuner would do.
>
>
>     Fingers can still be used to mute
>     strings of the trichords needing
>     attention, and having noted the
>     general level of drift of previous
>     notes, it is easy to determine
>     which string(s) moved (the most)
>     and make appropriate corrections
>     in the strings that will yield the
>     best temperament. This appears to
>     me to be one of the best reasons
>     for using an ETD because one can
>     easily analyze the mistake before
>     making any "corrections", and help
>     one enhance, not exacerbate, the
>     quality of the temperament when
>     time is so short.
>
>
> Temperament would be last on my list 
> of things to correct or enhance.
>
> For myself, I would find it easier to 
> do aurally what you mentioned, 
> starting from the center: 17ths up and 
> down, P12s up and down. That way, 
> you've assessed the worst offenders 
> and deal with them.
>
> Not really arguing due to my lack of 
> experience in recording and/or concert 
> touch-up sessions. But I have had to 
> work really fast. And I did have one 
> experience with a tuning that someone 
> else did that had drifted during the 
> recording session (It was over two 
> days, and there had been no touch-ups 
> at all). I certainly wouldn't have had 
> access to his ETD file, so I assessed 
> it aurally, and made slight changes to 
> make it better. The musicians were 
> happy. And I thought it was pretty 
> darn cool to be able to walk in with 
> no batteries required ... and fix it. 
> Well, "fix" is all relative, since I 
> couldn't retune the whole thing (what 
> it really needed ... but they were in 
> session already). Make better is all I 
> could do. But it surely felt good to 
> do it. <G>
>
> -- 
> JF

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