Xenharmonic Guitarist

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 on: July 15, 2014, 09:29:42 PM 
Started by Mat - Last post by Mat

 on: June 14, 2014, 09:39:44 AM 
Started by Allfifthstuning - Last post by Allfifthstuning
I've thought of it a while ago but let the thought go. I recently read that Bohlen also proposed a scale based on the golden ratio. It would for sure yield a very interesting subset.
Unfortunately I don't have the time on hands to make an in-depth comparison of the different temperaments. Alas!

For now, I want to experiment with the 31-tet because it gives me the opportunity to play songs with violin and voice, without having to learn a lot of new fingerings. (although it is completely irrelevant, - as a dutchman- I think it's kind of cool that this subset is popularised by two dutchmen ).
The BP scale, I choose because I really liked the sound of it (although I like the just variant even more).

 on: June 13, 2014, 04:53:14 PM 
Started by Allfifthstuning - Last post by Mat
Reading your MIMF thread i wondered if you knew the golden ratio can also be expressed as a musical interval. Because the ratio is irrational it is actually a highly dissonant interval, it's a slightly flat neutral sixth, 833 cents. There are many ways of building a tone system from that interval, the obvious choice would be 36ET because it can acheive an exact 833 cent interval. 36ET also contains the jazzy/bluesy blue notes and a near-exact 7th harmonic.
If you use a subset of 31ET you will be limited to the modes of that subset, and not able to modulate from, for example, just intonation C major to just intonation Eb major.

 on: June 13, 2014, 01:44:44 AM 
Started by Allfifthstuning - Last post by Allfifthstuning
Allright, here goes nothing:

I'm working on 4 prototypes of what I call a Quintar. Basically it's a seven string guitar tuned in fifths, starting with a low C (one step above a low B of a five-string bass). The highest string is a F#, one tone above a high E string of a regular guitar.
The first part of the name "Quintar" is referring to "quinta", the latin word for five, "tar" comes from guitar.
This video
shows prototype 0, which has 12-tet fretting, but it give an impressions of where it's going.

There are a few features that are different from a regular (bass)-guitar:
- Fanned frets: stringlengths will vary from 30.6" on the bassside to 26.2" on the trebleside.
- Logarithmic increase of distance between strings: therefore I can play chords more easily on the higher strings and use bass techniques like slapping for the lower strings
- Strings as moving-coil pickups, creating a polyphonic pickup

For two of the prototypes I want to make a xenharmonic fretboard: - one 31-tone and one with Bohlen-Pierce scale with 39 frets/tritave.

I've created the drawings of the guitar with a (amateuristic) script, which can be inserted in the free 3D-CAD program FreeCAD. One of the advantages of using a script is that I can alter several parameters without have to redraw the instrument myself.

I'm planning to make this an open source hardware project.


 on: June 13, 2014, 12:35:37 AM 
Started by Mat - Last post by Allfifthstuning
Thanks Mat,

I've stumbled on this forum only a couple a days before and I wish I've found it earlier!


 on: June 12, 2014, 12:29:12 PM 
Started by Mat - Last post by Mat
Hi Hans! You have full forum permissions. I looked at your thread, very interesting project, most of my basses are tuned in fifths too. I assume you know of http://www.ekips.org/tools/guitar/fretfind2d/, that can visualise and calculate fret positions for any xen tuning, including partial frets.

 on: June 12, 2014, 08:22:28 AM 
Started by Mat - Last post by Allfifthstuning
My name is Hans Bezemer,

I'm currently building 4 prototypes of what I call a Quintar. Two of them will have a xenharmonic fretboard.
I would like to share some ideas (and questions!) on this great forum.
@admin: for further reference you could check this thread.
Thanks in advance!

 on: May 13, 2014, 11:13:05 AM 
Started by Mat - Last post by Mat

Quoting guitarist Scott Dakota's posts in facebook xenharmonic alliance 2 group:
"Greetings, Xen cartographers and explorers - I'm new-ish on this group but not new to Xen music making. A hello and well-met to share - I was half of the overtly non-12tet trance rock duo The Moors, out of Boston in the 90's. By the final version of the band, the music was framed around wide-range fretless guitar with loose 72edo assisted thinking to do organic just intonation along with open pitch-continuum expression. The songs were all arranged around live looping to build the layers and textures, and no keyboards, synths, or basses were used. Everything here is fretless guitar, tuned drum machine, and vocals. The only thing missing in the live versions were the vocal harmonies, and the performance energy more than made up for that. The pagan/goth aspects of that band were much more vivid for the audience to get a handle on than the microtonal aspects, so the press and PR was usually about the spiritual and darkwave elements. But it is interesting to note that a non-12tet band sold albums pretty well by indie standards, had international distribution and a cult fan base, and most people didn't notice it wasn't 12tet. They just liked the feel of it. --- Side note: in this video, the stage shots are me and the singer, the woods shots are two actors. --- Anyway, this isn't angular crazy bleeding edge Xen, but it is a very focused Xen for this context. Hope you enjoy, thank you!"

"Mostly 5 limit with various modes and lambdoma/diamond things polysuperimposed. There are some moments in the solos that use 7/4 and 7/6 briefly for that blunt color, but are ornamental, not structural. On those fretlesses I use everything up through 13 often enough, but The Moors material stayed somewhat coordinated with the singer's woodwinds and flutes, which could only be bent so far."

"What functions as bass is the low range of the "wide range fretless guitar", which covers bass through guitar range. It's tuned low to high starting from Eb a half step below bass guitar low E, up in open 5ths. Eb Bb F C G D. The idea being, with careful part writing and some looping assist, I can cover most of the octaves needed for rock orchestration."


 on: May 09, 2014, 05:44:42 PM 
Started by Vaisvil - Last post by Vaisvil
follow above for a 23 edo guitar solo performance

 on: May 05, 2014, 03:15:25 PM 
Started by Mat - Last post by Mat

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