Jon, The dbl oct + a M3 is a 10:5 octave which means the lower note's 10th partial (a triple oct + a M3) and the upper note's 5th partial ( dbl oct + M3) is coincidental, hence the notation 10:5. A good reference to types of octaves and where they are generally used is in the pub. "On Pitch" by Rick Baldassin. Also those articles are found in back Journals, starting in June of 1983 to March or so of 1985. >Is there a reference to show which numerical ratio (ie: 4:2) goes >with which partial >and why a certain oct. type couldn't be used in a particular register. > >I suppose that I could figure it out if I had the partial sequence >in front of me. >I'm new to this 'tuning-by-numbers'. > >Primarily, I'm interested in a double octave and a third for the low >bass to give it >a proportion in my VT. Ron told me the oct. type (10:3, I think) >but I deleted the post. > >Jon Page > > >_______________________________________________ >caut list info: https://www.moypiano.com/resources/#archives -- Vince Mrykalo RPT MPT Senior Piano Technician Crane School of Music
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