m14th test

[Richard Brekne]

"John M. Formsma" wrote:

> List,
>
> Do any of you use the m14 test while tuning the lower bass?  An example of
> this would be E1 and D3 played together, which will produce beats.  I have
> heard that the beat rate is supposed to be around 7 per second.  If you use
> this test, should the 7 bps rate (or whatever the bps is) slow down like
> tenths as you descend, or is the beat rate the same for all m14ths down to
> A0?
>
> Thanks,
>
> John Formsma

I use that from time to time, depending on the piano it is sometimes the
easiest to get ahold of. I use it only as an extra reference to insuring an
eveness to the curve in the bass. Not the most reliable test in many cases
being so high a partial pair, but useful enough if used with a grain of salt.
Another such not much used interval is the double octave and a second. I am
getting away from these tho with increased use of Cyber Ear and Tune Lab.

Richard Brekne
I.C.P.T.G.  N.P.T.F.
Bergen, Norway