Call for scaling spreadsheets

[David Love]

I wouldn't think too long about it--unless it's to more clearly define
terms.  Higher tension scales such as found on concert instruments "project"
much better than low tension scales.  The higher tension scales will have
lower inharmonicity.  Tuning the upper treble sharp has little to do with
inharmonicity or projection.  It may, however, help with the top being
perceived as flat when heard from a distance.

David Love
davidlovepianos at comcast.net 
www.davidlovepianos.com

-----Original Message-----
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of Ric Brekne
Sent: Friday, September 29, 2006 10:34 AM
To: pianotech at ptg.org
Subject: Call for scaling spreadsheets

Hi Stéphane

This is interesting.  I hadnt thought along the lines of overall 
projection being linked to overall inharmonicity.  Yet some of the 
tuning discussions we've had through the years here are perhaps not too 
far removed from that kind of thinking.  For example it is ofte times 
mentioned that stretching the top more then is up front comfortable can 
result in better projection through a large hall.

I'd like to hear more of your thinking about along these lines.

Cheers
RicB

     Sure.  But when I meant projection, I didn't mean loudness.  You have
    pianos that sound very loud at 1 or 2 meters around them, but the
    loudness
    decreases rapidly with the distance.  Others (I have a particular and
    amazing straight strung 1873 Bechstein in mind) seem to have some
    obscure
    acoustic feature that makes them carry their sound way farther
    effortless, a
    bit like some venues acoustics (I think of the Concertgebouw in
    Amsterdam,
    Netherlands,  here) where at the very back of the place, you still
    hear the
    tongues in the throats of the singers.  I believe this has to do with
    inharmonicity, not only with loudness.  Harmonic sounds can (do)
    cancel each
    other.

    What do you think ?

    Stéphane Collin.