Sigh!!!!

[antares]

Thanks Dave Nereson for your patient explanation.

André Oorebeek


On 5-feb-04, at 1:52, Dave Nereson wrote:

>
> ----- Original Message -----
> From: "antares" <antares@euronet.nl>
> To: "Pianotech" <pianotech@ptg.org>
> Sent: Monday, February 02, 2004 2:21 PM
> Subject: Re: Sigh!!!!
>
>
>> thanks.
>>
>>
>> On 2-feb-04, at 22:07, Joseph Garrett wrote:
>>
>>> Andre' Oorebeek said/asked: "OK,
>>> In our work shop we have this tuning fork mounted on a mini 
>>> soundboard.
>>> If you just strike the tuning fork with 'something' you will hear it
>>> vibrate, but actually not very much.
>>>
>>> If however you put the mini sound board under pressure by bending it
>>> with your muscle power, the tone increases and becomes noticeably
>>> louder.
>>> In other words : if you apply pressure on the soundboard by bending 
>>> it,
>>> the tuning fork vibrations get louder.
>>>
>>> Why?
>
>     Yamaha dealers had these devices also, to supposedly prove that 
> crown
> improves sustain, and it did, on those devices.  Why, I don't know.  I 
> guess
> without the mini soundboard under tension, the sound waves could just
> dissipate out the loose ends, whereas under tension they were forced to
> recycle, possibly energizing the tuning fork again by feedback.  
> --David
> Nereson, RPT
>
>
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>
>
friendly greetings
from
André Oorebeek

Amsterdam -
The Netherlands

0031-20-6237357
0645-492389
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www.concertpianoservice.nl
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