beginner seeking advice re:VTDs (vacuum tuning devices)

[Philippe Errembault]

> Philippe, I fear that you are serious about this.

Do you ? Really ? Waow... Cool... I didn't know I was THAT good ;-)

You know, In french, Well no... probably only here in brussels, I think...
We have a word for that kind of joke...
It would translate to something like "to blow a bag". you know, it's like
when you take a paper bag like they put bread in it (I hope you use the
same bag for the bread we do...) you put air in it and then you close it's
end and hit it with you open hand to make it explode...

Well, my point is : Never do that with a vacuum cleaner bag (lol)

Philippe

Ps : In fact my real plan, since I own a very old piano with a wooden frame
and which I'm not even sure I can raise to A440 without breaking it, and
since I was an IT guy and quite good at mathematical programming, was
to write my own program to analyse the stretching needed by the strings,
and then produce my own reference sound set, to be able to check string
per string, not needing to rebuild the whole temperament each time it
changes...
... and then, I tune it to the fan of my computer's power supply
The only risk is that I will have to shut down the fans of my processor and
graphics chips that could give false beats ;-)


----- Original Message ----- 
From: "Jason Kanter" <jkanter@rollingball.com>
To: "'Pianotech List'" <pianotech@ptg.org>
Sent: Friday, March 03, 2006 4:30 AM
Subject: RE: beginner seeking advice re:VTDs (vacuum tuning devices)


> Philippe, I fear that you are serious about this. The idea of using a
vacuum
> cleaner as a pitch source is nonsense; forget it. Buy a tuning fork
> immediately.
>
> -----Original Message-----
> From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On
Behalf
> Of Conrad Hoffsommer
> Sent: Thursday, March 02, 2006 6:52 PM
> To: Pianotech List
> Subject: Re: beginner seeking advice re:VTDs (vacuum tuning devices)
>
> Philippe,
>
> At 19:07 3/2/2006, you wrote:
> >Hi,
> >
> >I'm new to tuning too and I don't have a tuning fork yet, I'd like to
> >try the vacuum cleaner tuning first.
> >a few questions :
>
> a few answers interspersed:
>
>
> >1/ I suppose all vacuum cleaners are not tuned on the same pitch.
>
> No more than pianos are at the same pitch leaving the factory and arriving
> at the showroom.
>
>
> >  Is there a Vacuum Cleaner tone Reference List (VCTRL) available
> > somewhere on the net ?
>
> Sounds like doctoral thesis material...
>
>
> >  Does this also word with kitchen vacuum ?
>
> I only have one for the entire house, so I wouldn't know about a
> dedicated kitchen unit.
>
>
> >2/ I suppose the pitch depends on the temperature...
>
> Of course, and since different models have different length and
> diameters of hoses, wands and heads/nozzles, there would have to be a
> certain amount of stretch to consider to determine the resonant
> frequency/pitch.
>
>
> >Should I wait for my Vacuum cleaner to stabilise ?
>
> Of course!! Proper feng shui will help.
>
>
> >How long ?
>
> Somewhere between a fortnight and quinze jours.
>
>
> >3/ I'm in europe and we are supplied in 220V 50Hz. Do you think this
> >can make a difference in pitch for the same model of vacuum cleaner
> >between Europe and US ?
>
> If they were synchronous, that would make a big difference, but since
> most have induction motors it depends...  why is there air?
>
>
> >4/ If for any reason I had to use a supplemental power supply
> >cable... Is there a risk that it infuences my reference pitch ?
>
> It all depends what you're referring to. Is that a pitch, as in cricket?
>
>
> >Should I pay attention to this ?
>
> No more than most people do to me.
>
>
> >5/ May I use the same vacuum cleaner for the tone reference and to
> >clean the piano ?
>
> That would depend on how many parts you suspect will get sucked up.
> Damper felt will clog the bag very quickly and change the pitch.
> Your call...
>
>
> >Thank you for you answers,
> >Philippe
>
> Thank you for providing the questions.
>
>
>
>
> Conrad Hoffsommer
> You have the right to remain silent. Anything you say will be
> misquoted, then used against you.
>
>
>
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