I have finally had a chance to re-examine Brian McLaren's report of my notation article in XH16, auspiciously appearing in Tuning Digest 600 on this forum. A few days ago I asked for more comments from others. Understandably, none arrived. (I'm pretty busy too.)
What I tried to do in that article was derive a system which is based on the one we know which would theoretically cover any ET. Some of the solutions are awkward, because once I figured out what to do, I pushed the result as hard as I could. Consequently, to notate 171-tET the way I did may just seem quaintly humorous. But for a large number of ETs, probably up to 72 or 100 or so, I think I showed that using traditional notation plus signs for various kommas works, and works systematically. That is the key concept, because until now there have been widely divergent approaches. My systematization doesn't do away with those, of course, but it strongly suggests that non-systematic approaches won't work for more than a few tunings, because relationships among them won't appear.
Yes, this amounts to an expansion of Pythagorean notation, with the addition of signs for the syntonic komma, the diesis, the skhisma, and the diaskhisma. In the process, some theorems are discussed and proved about the relation of the kommas to each other. Below are paraphrases of some of Brian's points (some only, not all that I take issue with), enclosed in angle brackets, plus my discussion. His exact words are in quotation marks. I'd be interested in others' reactions. I am aiming here for a rational (and calm) objection to points I disagree with, no more.
1. Brian says that relate "all the especially 12-like tunings with good fifths."> I don't. The basing of a notation system on fifths is all I did, whether or not those fifths are good or bad, or whether an ET has fifths at all. For those that don't (e.g. 13-tET), I proposed a general solution to notate them within the same framework.
2. method.> The article shows how to do this. Of course many may prefer the method for ETs with recognizable fifths; see point 1.
3. just intonation.> Many uses of ETs do exactly that, especially the ones that allow recognizable tonal or modal progressions. This does not mean that they grew from JI historically, which is a different and differently arguable point.
4. Brian spends some time discussing why small intervals, e.g. 1/17 or 1/31 octave don't sound like JI, for no reason I can determine.
5. them all as 12-like as possible.> Not quite; he tried to make them as tonal/modal as possible. showcase exotic, non-Pythagorean intervals.> One might as well devalue 12-tET tonal music because it isn't atonal, or the other way around, for that matter. There is little point in criticizing something for what it deliberately *doesn't* do, unless it makes a claim that nothing else is acceptable. We need to separate criticizing the premise from criticizing the result. I'd prefer more exotic music too, but that isn't what Blackwood set out to do.
Paul E says: > Although I believe octave equivalence is universally perceived, I think a > lot of interesting music can be made without octaves.
From my work with 88CET tuning, I have found that nonoctave tunings are interesting (partly) BECAUSE OF the universal perception of octave-equivalence, rather than IN SPITE OF it. Warren Burt, Paul Fly, and others immediately latched on to this as well, when they played with 88CET. (Let me put in another quick plug for Paul Fly's 88CET "sketches"; they're really neat stuff.)
Paul E indirectly mentioned in his post why octave-equivalence makes nonoctave tunings valuable: In an octave-based tuning, each octave's span provides octave-equivalents of the same basic harmonies, whereas in a nonoctave tuning, each octave's span gives you an all new set of harmonies.
So the almost universal perception and agreement on the idea of octave equivalence bodes well for nonoctave tunings, because it ensures that they provide more harmonic variety than octave-based tunings (for a given scale-step size).
Then again, if you don't buy the idea of octave equivalence, and feel that, for example, a 5:2 M10 sounds fundamentally different from a 5:4 M3, then you'd conclude that octave-based tunings as well nonoctave tunings provide all new harmonies in each octave's span.
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