Bass string making (was Hex Roslau wire?)

[Richard Brekne]

Grin... I know the feeling... I got so many projects going I am having trouble
finding time to breath correctly.. Erractic inharmonicity is more commonly
refered to as para inharmonicity. It is really nothing more then real
measureable inharmonicity for a string. This can be positive or negative in
relationship to the expected inharmonicity given by the formulars for such, and
can in extreme cases be even negative to integer multiples of the fundemental.
In bass and lower tenor inharmonicity is really fairly unpredictable and follows
to a much less degree any real pattern then what we see in treble strings.

Why bass strings wound on hex wire display less inharmonicity in general, and
why they seem to conform a bit better to expected inharmonicity (I am assuming
that all that is true) I have no idea.

"Carl W. Meyer" wrote:

> Richard:  Thanks for the post.  Why? Why? Why? do answers always lead to
> more questions?
> I assume that when you say hex wire has lower inharmonicity, you are
> talking about strings wound on hex wire (could be just hex wire?).  I don't
> doubt it, I just want to know why.
> Now you've given me an additional research  project that I hadn't even
> considered.  My schedule for research projects already exceeds my life
> expectancy.  Could you define erratic inharmonicity?  I guess the schedule
> slips because every answer to a question spawns more  questions in a
> prolific, logrithmic manner. Like they say, progress was okay, but it's
> gone on too long.
>
> Regards
>
> Carl Meyer
>
> > [Original Message]
> > From: Richard Brekne <Richard.Brekne@grieg.uib.no>
> > To: <pianotech@ptg.org>
> > Date: 9/25/00 12:16:03 PM
> > Subject: Re: Bass string making (was Hex Roslau wire?)
> >
> > >
> > > >I know that many share your view that hex core doesn't give good tone.
> I
> > > >can't say that I have enough experience to notice.
> > > >Now, do you have any idea why that is true if it is?
> > > >Could the process (whatever it is) affect tone?
> > > >Could the scaling formulas be wrong for hex wire?
> > > >Is the tension or inharmonicity different and why?
> > > >I just can't put my finger on any logical reason that hex core would
> sound
> > > >different than plain wire.  Could it be that they just take round wire
> and
> > > >run it thru a die and then don't anneal it or use some other process to
> > > >finish it?  I'm really curious.
> > >
> >
> > Hex strings are supposed to have lower and less erractic inharmonicity. I
> > have
> > not checked this with my handy dandy inharmonicity analyser. But I have
> > heard
> > this so often now I see no reason to doubt it. Just how much lower the
> > inharmonicity is I have no idea.
> > --
> > Richard Brekne
> > RPT, N.P.T.F.
> > Bergen, Norway
>
> --- Carl W. Meyer, Santa Clara, Ca.
> --- cmpiano@earthlink.net

--
Richard Brekne
RPT, N.P.T.F.
Bergen, Norway