Last octave/stretching, etc.

[Kevin E. Ramsey RPT]

On a machine, your tuning at C8 would probably read in the 25 to 30 cents
range, although that depends on the overall harmonics of the rest of the
piano. Even if you tuned all octaves "pure" at the 2/1 level from say C5 up,
you'd still get to about 25 cents sharp by C8. It's just the nature of
inharmonicity.
----- Original Message -----
From: "Larry" <lbeach@sfu.ca>
To: <pianotech@ptg.org>
Sent: Friday, December 15, 2000 2:06 PM
Subject: Re: Last octave/stretching, etc.


> Thanks Dave for providing the aural tests for stretching (C8 tuned with
> C6).  Most of the time I see people giving the number of cents
> sharp/flat.  My only problem with that is that I can't afford an
electronic
> device, so I am completely an aural tuner.  As a result, I have little
idea
> what 45 cents sharp sounds like as a stretch on a particular piano.
>
> I often tune the last octave so that the double octave + 5th is only
> slightly narrow.  Then I make sure the single octave isn't beating
> wildly.  I have always wondered how many cents sharp I am stretching in
> that octave.  It must be reasonable because it worked for my tuning exam.
>
> Larry Beach, RPT
> Vancouver, BC
> Canada
>
> At 09:13 AM 12/15/2000 -0600, you wrote:
> >Ed:
> >
> >I wanted to compare with what I usually do.  My normal "D" tuning leaves
> >C8 at 45 cents.  That puts C8 as a 19th from F5.  To me that's certainly
> >in the "normal" range.  Most of the time (non concert tuning) I prefer C8
> >as a double octave of C6, but that depends on the customer.
> >
> >dave
>