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tuning-math

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  • Members: 191
  • Category: Mathematics
  • Founded: May 21, 2001
  • Language: English
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7/72 generator in blackjack   Message List  
Reply Message #294 of 20696 |
Re: 7/72 generator in blackjack

--- In tuning-math@y..., jpehrson@r... wrote:

> But isn't it a bit strange that a generator that is 7 units of 72-
> tET should create FIVES... and that 5+2, the small interval = 7.
>
> I'm not entirely understanding why that is...
>
> ??

It's very simple.

72 divided by 7 is 10, with a remainder of 2.

So after 10 generators in the cycle, you're 2 units short of where
you started.

Another generator later, you're 7-2 = 5 units beyond where you
started, and 2 units short of the second note in the chain.

Similarly, you'll divide each of the 7-unit steps of the first cycle
into a large (5-unit) step and a small (2-unit) step as you go around
the second cycle.

When you've completed the second cycle, you've completed the
blackjack scale.

When you've completed the third cycle, you've completed the canasta
scale.

When you've completed the fourth cycle, you've completed the MIRACLE-
41 scale.




Fri Jun 22, 2001 7:04 pm

paul@...
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Message #294 of 20696 |
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Well, this isn't very advanced... but, if not math, at least it's arithmetic... I still don't understand how 7 of the 72-tET scale is a generator of blackjack....
jpehrson@... Send Email Jun 20, 2001
3:10 am

... _________________________________________________________ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com...
monz
joemonz@... Send Email
Jun 20, 2001
4:52 am

... Joseph, As a complement to Monz's explanation, see what I just added to http://uq.net.au/~zzdkeena/Music/MiraclePitchChart.gif It shows the octave as a...
Dave Keenan
D.KEENAN@... Send Email
Jun 20, 2001
6:14 am

... http://groups.yahoo.com/group/tuning-math/message/258 ... and follow the (new) straight line segments clockwise. You'll see each one jumps 7/72 of an...
jpehrson@... Send Email Jun 21, 2001
2:09 am

... There is only one chain. It _starts_ at D>. It goes around the circle once, producing 9 more notes. Then D pops up. Then 9 more notes. Then D< is last....
Paul Erlich
paul@... Send Email
Jun 21, 2001
2:32 am

... http://groups.yahoo.com/group/tuning-math/message/267 ... those ... is ... are ... circle ... Then ... Thanks, Paul... I just started on the wrong note......
jpehrson@... Send Email Jun 21, 2001
2:46 am

... http://groups.yahoo.com/group/tuning-math/message/256 ... Hello Monz! Thank you so much for this interesting response. Well, I read ahead, and I guess...
jpehrson@... Send Email Jun 21, 2001
2:04 am

... Yup . . . it's identical in form to the derivation Woolhouse did (in 1835?) of the optimal meantone temperament, which turned out to have a fifth (the...
Paul Erlich
paul@... Send Email
Jun 21, 2001
2:29 am

... _________________________________________________________ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com...
monz
joemonz@... Send Email
Jun 21, 2001
6:22 am

31-EDO is "MIRACLE" in exactly the same way that 12-tET is meantone. i.e. Not really. At best borderline, with large deviations from JI. We have the following...
Dave Keenan
D.KEENAN@... Send Email
Jun 22, 2001
12:40 am

... http://groups.yahoo.com/group/tuning-math/message/280 ... meantone. ... Thanks, Dave! This is very interesting... ______ _____ ______ Joseph Pehrson...
jpehrson@... Send Email Jun 22, 2001
3:33 am

... I've also found it useful as a keyboard notation for Blackjack on a traditional keyboard -- it's easy to set up a 2-octave keyboard mapping with the...
Herman Miller
hmiller@... Send Email
Jun 22, 2001
1:52 am

... mapping ... black ... Herman, Could you describe this keyboard mapping in more detail? The main problem I'm having here is that there are 11 "unnaturals"...
Dave Keenan
D.KEENAN@... Send Email
Jun 22, 2001
3:04 am

On Fri, 22 Jun 2001 03:04:34 -0000, "Dave Keenan" <D.KEENAN@...> ... 0^ 1^ 2^ 3^ 4^ 5^ 6^ 7^ 8^ 9^ 0 1 2 2 3 4 5 5 6 7 7 8...
Herman Miller
hmiller@... Send Email
Jun 23, 2001
12:46 am

... http://groups.yahoo.com/group/tuning-math/message/271 ... Thank you Monz, for this. This is the first time I've started to understand it. After the first...
jpehrson@... Send Email Jun 22, 2001
3:26 am

... It's very simple. 72 divided by 7 is 10, with a remainder of 2. So after 10 generators in the cycle, you're 2 units short of where you started. Another...
Paul Erlich
paul@... Send Email
Jun 22, 2001
7:05 pm

... http://groups.yahoo.com/group/tuning-math/message/294 ... 72- ... cycle into a large (5-unit) step and a small (2-unit) step as you go around the second...
jpehrson@... Send Email Jun 22, 2001
9:04 pm

In-Reply-To: <9gpf0f+i66g@eGroups.com> ... 11-limit by most figures of demerit, although that is ignoring some obviously too complex scales. 7-limit it's...
graham@... Send Email Jun 21, 2001
6:19 pm

... Your page says "11 limit" where it should be "13 limit"....
Dave Keenan
D.KEENAN@... Send Email
Jun 22, 2001
1:26 am

In-Reply-To: <9gu46b+b1l3@eGroups.com> ... That could be continued Meantone MIRACLE ... 26-EDO 21-EDO 7-EDO 10-EDO 5-EDO 11-EDO although 7 and 5 may be...
graham@... Send Email Jun 22, 2001
9:08 am
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