tuning bass

[John Formsma]

When m3=M6, you have a just 6:3 octave. So, yes, they should beat the same
for that octave type.

Now, I'd have to check my On Pitch book b/c I don't recall offhand...but I
think the lower you go, you also start hearing some of the partials above
the 6:3. Therefore, it gets kind of hard to hear in the lower bass. I
generally hear all kinds of junk noise on these low octaves, and have to
listen carefully to filter it out. However, you can also use a different
test to check the 6:3.

OK, just looked in the book, and another 6:3 test is the P12-P5. When they
beat the same, it is a just 6:3 octave.

Hope this helps. Maybe someone else will chime in here. I feel like this is
only a partial answer. (Sorry for that <g>.)

JF

P.S. Another good bass check is the octave + a minor 7th. This is used to
check for even progression. Example: C2-Bb3, then descend by half steps.
Keeps you in the ball park.


On 3/19/07, daniel carlton <hacicspe at gmail.com> wrote:
>
> hi all
> i'm wanting to take the RPT tests within the next few months. i usually
> use the baldassin-sanderson temperment. i get my major 3rds running pretty
> smoothly, but i also try to get my 4ths and 5ths sounding close to the same.
> below the temperment, i usually try to get quiet 12ths and, again, good 4ths
> and 5ths, but i've noticed (even though i've got a good temperment) that
> when i use the minor 3rd-Major 6th test to get 6:3 octaves, the 3rd and 6th
> don't beat the same speed. aren't they supposed to sound the same to get a
> good 6:3?
>
> thanks
>
> daniel
>
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