Synth-cordian

[Harry Bissell]

OK I subscribe to the madness...

You could have single buttons, driving a diode decoder that interfaces like
the diode matrix on many polysynths. Just buttons and diodes would do it
all...

Or you could have 1 VCA per note (this could be the old fet, mosfet, or
diode
keyer...) and drive the top octave dividers into this scheme...

I'm not sure if all accordian chords use the same inversion... I think they
do NOT...
but share reeds in a matrix arrangement.

Do use a multi conductor cable and put the rest in a rack.

I'd search "Chordovox"  (sp?) maybe cordovox ?  for electronic and
electronically
enhanced accordians. No use re-inventing the wheel.

Lawrence Welk rides again...

PS. That famous photo of Judy Tenuta (with her accordian), hanging on the
wall over
the bench might be an inspriation...

(otoh maybe it will not be.....)

H^) harry

Scott Gravenhorst wrote:

> I found this info on accordians:
> ========================================================================
> The size of the instrument is usually denoted by the number of basses.
> These basses are arranged in rows of 6 buttons for each key:
> counter bass, bass, then major chord, minor, seventh, and diminished.
>
> A 120 bass with 41 treble keys is the full size model, and the bass end
> offers a chromatic scale, and all the chords, arranged in 6 rows of 20.
> An 80 bass has 5 rows of 16 (omitting the diminished row), and a 37 note
> keyboard. A 72 bass has a 34 note keyboard, but retains the 6 row bass.
>
> The most popular size, and ideal for beginners, is the 48 bass, usually
> with 6 rows of 8, allowing accompaniment in the keys of Bb, F, C, G, D,
> & A. The treble keyboard on the 48, 32, and 12 bass models usually has
> 26 keys, enough for most tunes, but limiting for a pianist.
> ========================================================================
>
> There are many different configurations, so no "cast in stone" standard.
> So at this point, I'm going to feel free to do as I please with the
> button arrangement for my electronic instrument.
>
> I am now quite sure that I can get alot more chords with fewer
> buttons assuming I take the approach of using a monosynth VCO to
> drive a TOG and then use the buttons (in combinations of 1 or more)
> to create various chords.  I think I'd like to have it somehow
> programmable, even if by DIP switches.
>
> Interesting stuff on the site included that fact that some accordians
> are double reed and of those, some have reeds that are purposely
> not tuned exactly the same (with an obvious audio result).  It
> occurs to me that since I have 2 50240s, I could run each on it's
> own VCO where the VCOs are tuned a tad off of each other.  I need
> to think about how complex that might get and if there might be
> a way to get the same effect without using two TOGs.
>
> -- Scott Gravenhorst : On The Edge, but the Edge of What?
> -- Linux Rex, Linux Vobiscum  |  RedWebMail by RedStarWare
> -- FatMan: www.teklab.com/~chordman
> -- NonFatMan: members.xoom.com/_XMCM/chordman/index.html
> -- The 21st century does NOT start in the year 2000!!!