Yahoo Tuning Groups Ultimate Backup makemicromusic Re: [MMM] Re: 17WT paper & 19-tone glass marimba

The partials are very spaced apart, and the timbre is very clean, it resembles a bit a sinusoidal tone or tune fork, but soft and dull. In the low pitches (lowest one is 220Hz) though, one can hear the 2nd mode clearly.

In this project, I want an instrument in a versatile tuning, to be played along computer-generated sounds, able to play traditional (meantone) music -- tonal or modal --, open to pantonal/atonal sonorities and with a repertory of ``xentonal'' or microtonal (small) intervals. It seems that 19-EDO is a good choice.

(However, I liked 17-WT so much, so I think that building a set of 17-WT glass keys will be very welcome for future projects.)

Cheers,
Hudson

misterbobro escreveu:
> Actually George Secor's 19+3 would be really good with your > overtones, looking at it now and comparing to what I figured above.
> > The "M2" is right on, the "7/6" and "14/9" are really good and in > keeping with your overtones, the "5/3" would sound even more "just" > than an integer ratio would, I suspect. The second partial would > beat like mad I guess, so you'd have a feeling combining oddly > appropriate-sounding intervals with a continual flutter, kind of > gamelan sounding maybe. > > --- In MakeMicroMusic@yahoogroups.com, "misterbobro" > <misterbobro@...> wrote:
> >>>The spectrum is inharmonic:
>>>
>>>Mode 1: 1
>>>Mode 2: 2.757
>>>Mode 3: 5.404
>>>Mode 4: 8.933
>>>Mode 5: 13.344
>>>Mode 6: 18.638
>>>Mode 7: 24.814
>>>Mode 8: 31.872
>>>
>>
>>(Octaving down):
>>
>> Mode 1: 1
>> Mode 2: 2.757 555 cents, 11/8 is 551.318 >> Mode 3: 5.404 520.8 cents, 27/20 is 519.551 >> Mode 4: 8.933 191 cents, 19/17 is 192.558
>> Mode 5: 13.344 885.7 cents, 5/3 is 884.359 >> Mode 6: 18.638 264 cents, 7/6 is 266.8
>> Mode 7: 24.814 759 cents, 14/9 is 764.916 >> Mode 8: 31.872 1193 cents, 2/1 is 1200
>>
>>
>>Hmmm, maybe something near a 19-tone equal (19/17, 3ï¿½19-EDO and > > one > >>of your harmonics octaved down all fall within a 3 cent window), > > and > >>aiming toward 5:6:7:8:9:10:11 would work very well.
>>
>>A few years of measuring "random samples" of acoustic instruments >>has led me to believe that there is a great deal of harmonicity >>in "inharmonic" sounds, and that the ideal against which they > > should > >>be measured varies, falling into several classes, not just an > > ideal > >>fixed string.
>>
>>-Cameron Bobro

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🔗misterbobro <misterbobro@...>

How do you go about actually making a glass marimba? From the nature
of the partials it seems like you're using some kind of tubes or
cylinders?

--- In MakeMicroMusic@yahoogroups.com, Hudson Lacerda
<hfmlacerda@...> wrote:
>
> The partials are very spaced apart, and the timbre is very clean,
it
> resembles a bit a sinusoidal tone or tune fork, but soft and dull.
In
> the low pitches (lowest one is 220Hz) though, one can hear the 2nd
mode
> clearly.
>
> In this project, I want an instrument in a versatile tuning, to be
> played along computer-generated sounds, able to play traditional
> (meantone) music -- tonal or modal --, open to pantonal/atonal
> sonorities and with a repertory of ``xentonal'' or microtonal
(small)
> intervals. It seems that 19-EDO is a good choice.
>
> (However, I liked 17-WT so much, so I think that building a set of
17-WT
> glass keys will be very welcome for future projects.)
>
> Cheers,
> Hudson
>
> misterbobro escreveu:
> > Actually George Secor's 19+3 would be really good with your
> > overtones, looking at it now and comparing to what I figured
above.
> >
> > The "M2" is right on, the "7/6" and "14/9" are really good and
in
> > keeping with your overtones, the "5/3" would sound even
more "just"
> > than an integer ratio would, I suspect. The second partial would
> > beat like mad I guess, so you'd have a feeling combining oddly
> > appropriate-sounding intervals with a continual flutter, kind of
> > gamelan sounding maybe.
> >
> > --- In MakeMicroMusic@yahoogroups.com, "misterbobro"
> > <misterbobro@> wrote:
> >
> >>>The spectrum is inharmonic:
> >>>
> >>>Mode 1: 1
> >>>Mode 2: 2.757
> >>>Mode 3: 5.404
> >>>Mode 4: 8.933
> >>>Mode 5: 13.344
> >>>Mode 6: 18.638
> >>>Mode 7: 24.814
> >>>Mode 8: 31.872
> >>>
> >>
> >>(Octaving down):
> >>
> >> Mode 1: 1
> >> Mode 2: 2.757 555 cents, 11/8 is 551.318
> >> Mode 3: 5.404 520.8 cents, 27/20 is 519.551
> >> Mode 4: 8.933 191 cents, 19/17 is 192.558
> >> Mode 5: 13.344 885.7 cents, 5/3 is 884.359
> >> Mode 6: 18.638 264 cents, 7/6 is 266.8
> >> Mode 7: 24.814 759 cents, 14/9 is 764.916
> >> Mode 8: 31.872 1193 cents, 2/1 is 1200
> >>
> >>
> >>Hmmm, maybe something near a 19-tone equal (19/17, 3?19-EDO and
> >
> > one
> >
> >>of your harmonics octaved down all fall within a 3 cent window),
> >
> > and
> >
> >>aiming toward 5:6:7:8:9:10:11 would work very well.
> >>
> >>A few years of measuring "random samples" of acoustic
instruments
> >>has led me to believe that there is a great deal of harmonicity
> >>in "inharmonic" sounds, and that the ideal against which they
> >
> > should
> >
> >>be measured varies, falling into several classes, not just an
> >
> > ideal
> >
> >>fixed string.
> >>
> >>-Cameron Bobro
>
> --
> '---------------------------------------------------------------
----.
> Hudson Lacerda http://br.geocities.com/hfmlacerda/
>
> microabc -- free software for microtonal music
> http://br.geocities.com/hfmlacerda/abc/microabc-about.html
>
> *NÃ DEIXE SEU VOTO SUMIR! http://www.votoseguro.org/
> *Apó©¥ o Manifesto:
http://www.votoseguro.com/alertaprofessores/
> .---------------------------------------------------------------
----'
> --
>
>
>
>
>
>
> _______________________________________________________
> Você ±uer respostas para suas perguntas? Ou você ³abe muito e quer
compartilhar seu conhecimento? Experimente o Yahoo! Respostas !
> http://br.answers.yahoo.com/
>

🔗Hudson Lacerda <hfmlacerda@...>

misterbobro escreveu:
> How do you go about actually making a glass marimba? From the nature > of the partials it seems like you're using some kind of tubes or > cylinders?

Rectangular glass bars.

Have a look at a part of a 12-EDO glass marimba:
http://br.geocities.com/hfmlacerda/misc/movel.png
http://br.geocities.com/hfmlacerda/misc/detalhe.png

The layout for 19-EDO marimba:
http://br.geocities.com/hfmlacerda/misc/marimba-19k.png

--
'-------------------------------------------------------------------.
Hudson Lacerda http://br.geocities.com/hfmlacerda/

microabc -- free software for microtonal music
http://br.geocities.com/hfmlacerda/abc/microabc-about.html

_______________________________________________________ O Yahoo! estï¿½ de cara nova. Venha conferir! http://br.yahoo.com

🔗misterbobro <misterbobro@...>

🔗Carl Lumma <ekin@...>

🔗threesixesinarow <CACCOLA@...>

--- In MakeMicroMusic@yahoogroups.com, Hudson Lacerda <hfmlacerda@...>
wrote:
>
> misterbobro escreveu:
> > How do you go about actually making a glass marimba? From the
nature
> > of the partials it seems like you're using some kind of tubes or
> > cylinders?
>
> Rectangular glass bars.
>
> Have a look at a part of a 12-EDO glass marimba:
> http://br.geocities.com/hfmlacerda/misc/movel.png
> http://br.geocities.com/hfmlacerda/misc/detalhe.png
>
> The layout for 19-EDO marimba:
> http://br.geocities.com/hfmlacerda/misc/marimba-19k.png

Nice job, it's very neat, not many tools needed and easy to mark
notes. If additional strength is wanted, in "The Pianoforte" Harding
shows a "popular 'harmonica'" keyboard instrument with two rows of
kind of half cylindrical glass bars from the Victoria & Albert Museum
in plate 17, although they're struck on end. You might find a scrap
something like a glass blower's ribbon burner from an old furnace, and
you can make an annealing oven with a couple space heater heating
elements in a double box made of insulating stuff from the hardware
store.

Clark