Was Voicing M&H BB/ Now tuned duplexes

[Delwin D Fandrich]

----- Original Message -----
From: "Richard Brekne" <Richard.Brekne@grieg.uib.no>
To: <pianotech@ptg.org>
Sent: October 29, 2001 12:39 AM
Subject: Re: Was Voicing M&H BB/ Now tuned duplexes


>
>
> Delwin D Fandrich wrote:
>
> > -
> >
> > I'm interested in Dan's observations primarily because they apparently
> > differ so much from my experience and from actual comparative
measurements I
> > have made. My bias is not entirely subjective. True, it started out that
way
> > but that bias then was verified by testing and measurement. If Dan has
> > actual measured results to back up his subjective observations I'll be
most
> > interested in his conclusions.
> >
> > Del
>
> Well now..... this is a bit more substantial.

Nothing I haven't said before.


> Do you have any figures to share
> with us?

No.


> And if not I would love to hear more about just what you tested for,
> what hardware you used to test and measure.

An HP FFT Spectrum Analyzer.
I tested for the power and sustain of the various harmonics in the wave
envelope with both tuned and untuned duplex string segments. The tuned
string segments were taken both above and below the closest logical partial.

The tests were not exhaustive but were carried far enough to satisfy my need
to know.

Del