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Messages 15532 - 15563 of 17519   Oldest  |  < Older  |  Newer >  |  Newest
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15532
Hello, How would you compute log-flat badness for TOP tuned equal temperaments? Kalle...
Kalle Aho
kalleaho
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Aug 3, 2006
3:54 pm
15533
... Logflat badness in the p-limit is... error^(pi(p)-1) / complexity For error I'd use TOP damage, and for complexity I'd simply use the number of...
Carl Lumma
clumma
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Aug 3, 2006
5:35 pm
15534
... Surely not -- it means the more complex a temperament the lower its badness. ... You would? ... He's right, with a caveat that there isn't always a single...
Graham Breed
x31eq
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Aug 4, 2006
11:00 am
15535
Hi Carl and thanks for your reply! ... Really? I thought it was something like error*complexity^something. ... What about nonoctave ETs? Wouldn't it be more...
Kalle Aho
kalleaho
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Aug 4, 2006
3:18 pm
15537
... Oh sorry, that was supposed to be *, not /. ... Yes, it's on my list. ... I remember that. ... Didn't Paul say to minimize the 2nd biggest error, etc. in...
Carl Lumma
clumma
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Aug 4, 2006
4:35 pm
15538
... As I just wrote to Graham, I meant * instead of /, but I think you're right, the ^something goes on complexity, and it's the number of primes - 1. ... ...
Carl Lumma
clumma
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Aug 4, 2006
4:46 pm
15539
... Actually that's for linear temperaments, which used to be rank 1 I think. For ETs it would have been primes - 0. But now that linear temperaments are...
Carl Lumma
clumma
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Aug 4, 2006
4:53 pm
15540
... I don't know what Paul said, but I certainly prefer to avoid complicating definitions. In this case, the second mapping looks better to me. It has a...
Graham Breed
x31eq
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Aug 4, 2006
8:35 pm
15541
... I do mention this in my errors and complexities thing http://www.microtonal.co.uk/primerr.pdf The point is, there isn't an obvious way of comparing...
Graham Breed
x31eq
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Aug 4, 2006
8:36 pm
15542
... But is there something wrong in using e.g. the reciprocal of the step size as a complexity measure? If not, my question then becomes: How to change the...
Kalle Aho
kalleaho
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Aug 5, 2006
9:15 am
15543
... If you're happy with it I don't think there are any snakes lurking. It's just nice to have a complexity that doesn't depend on the tuning. Graham...
Graham Breed
x31eq
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Aug 5, 2006
9:44 am
15545
... I try to answer this myself with help from http://tonalsoft.com/enc/b/badness.aspx So is max tenney-weighted error/step size^(3/2) correct for 5-limit?...
Kalle Aho
kalleaho
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Aug 5, 2006
1:47 pm
15546
Let me try to remember what I wrote the first time I replied to this... ... Oh dear, I can barely understand TOP, let alone TOP-RMS. Do you really have...
Carl Lumma
clumma
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Aug 5, 2006
6:59 pm
15547
... I can barely understand TOP, let alone TOP-RMS. Do you really have good generalizations of TOP for various average error measures? Like with TOP-RMS,...
Carl Lumma
clumma
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Aug 5, 2006
6:59 pm
15548
... I have one variant for a different type of average, the RMS, and variants for octave equivalent approximations. There's no analogy that I can prove to...
Graham Breed
x31eq
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Aug 5, 2006
9:35 pm
15549
... I assume you can calculate the TOP-RMS damage of a tuning. Have you then checked the Tenney-weighted RMS errors of some chords to see if any are greater? ...
Carl Lumma
clumma
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Aug 5, 2006
10:30 pm
15550
... I don't see anything searching my tuning-math archive either. But I did come across Paul saying something about you 'cleverly reducing the steps necessary'...
Carl Lumma
clumma
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Aug 5, 2006
10:38 pm
15551
... He says "For an ET, just stretch so that the weighted errors of the most upward-biased prime and most downward-biased prime are equal in magnitude and...
Graham Breed
x31eq
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Aug 6, 2006
7:39 pm
15552
... Of course there are chords that are going to have higher error than the average. The TOP-RMS is vaguely correlated with the Tenney-weighted error of an...
Graham Breed
x31eq
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Aug 6, 2006
7:40 pm
15553
... The general formula is error * complexity^(pi(p)/(pi(p)-r), where r is the rank. If the rank is 1, that becomes e*c^(pi(p)/(pi(p)-1))....
Gene Ward Smith
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Aug 7, 2006
4:58 am
15554
... Thanks! -Carl...
Carl Lumma
clumma
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Aug 7, 2006
5:04 am
15555
... Thanks Gene, when the error is Tenney-weighted, the sequence of 5-limit ETs of decreasing badness is 1, 12, 53, 4296,... Of meantone ETs 12-equal has the...
Kalle Aho
kalleaho
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Aug 7, 2006
8:02 am
15556
... Are there any other badness measures which are as non-ad hoc as log-flat but which would give more reasonable values for ETs? Kalle...
Kalle Aho
kalleaho
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Aug 9, 2006
7:27 am
15557
... Badness is a tough tradeoff to make. 12 is not very many tones. It's hard to be non- ad hoc because one composer's delight is another's monstrosity. By...
Carl Lumma
clumma
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Aug 9, 2006
8:08 am
15558
... e*c^(pi(p)/(pi(p)-1)). ... Hi Carl, ... Yes, I know. My remark above implies that. ... Actually I would prefer something weaker! I would like to have a...
Kalle Aho
kalleaho
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Aug 9, 2006
8:33 am
15559
... I think 31 is the poptimal meantone. Maybe Gene'll be a long to explain it. Otherwise, how non-ad hoc do you want? I've found error*complexity is easy to...
Graham Breed
x31eq
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Aug 9, 2006
9:25 am
15560
... Sorry, I read this backwards (and hence incorrectly) upon replying. ... I'd expect an infinite number of ETs to temper out any comma. How does it work as...
Carl Lumma
clumma
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Aug 9, 2006
9:44 am
15561
... explain it. Hi Graham, I remember it being 81 for 5-limit. ... Ironically enough non-ad hocness is pretty subjective. At least no coefficients, please! ......
Kalle Aho
kalleaho
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Aug 9, 2006
7:25 pm
15562
... No problem! ... You are right of course. But if we require that the best approximations of primes in the ET are the same as given by its mapping then I...
Kalle Aho
kalleaho
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Aug 9, 2006
7:38 pm
15563
... then ... Although it doesn't work with 1-equal because its badness will be 0 as log(1)=0. Error*log(1/step size) is better. Kalle...
Kalle Aho
kalleaho
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Aug 9, 2006
7:54 pm
Messages 15532 - 15563 of 17519   Oldest  |  < Older  |  Newer >  |  Newest
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