[sdiy] A few Oberheim questions

[ASSI]

On Sonntag, 5. Dezember 2004 22:51, David Cornutt wrote:
> Please humor me for a moment, for I have sought the answers
> to these questions via Google but haven't really come up with
> any definitive answers.  I'm trying to write a patch editor and
> librarian for the Matrix-1000 and I've run into some questions:

Trying to write editors for synths you don't have access to doesn't work 
all too well in my experience. Even if you have all the documentation 
there will still be the occasional undocumented or accidental feature 
(aka bug) to stop you cold.

> 1.  I have a request to make the editor also support the
> Matrix 6/6R synths.  Can anyone summarize what the differences
> are between these and the 1000?  I know that the 6/6R support a
> keyboard split/layer mode that the 1000 doesn't have.  What else?

The two DCO in the M6 have their own clock while it's shared in the 
M1000. The M1000 is mono and the M6 stereo. You can edit an M6 from the 
front panel, but not an M1000. The CEM3396 in the M6 is the wide-body 
version.

> I see some references in the Matrix 1000 programming info to,
> for example, an "external" trigger mode for the LFOs.  Is this
> perhaps a leftover from an external input on the 6/6R that
> the 1000 doesn't have?

Check http://www.jsynthlib.org - IIRC they have an editor for the M1000 
and the M6.

> 2.  Other than the fact that one is a keyboard and one is a rack,
> are there any differences between the 6 and the 6R?

I would expect not much differences in the sound dump format, the M6 and 
M6R share the same voice board(s).

> 3.  The Matrix-12 doesn't really fit into this line; it's more
> closely related to the Xpander than it is to the Matrix-6.  Correct?

A Matrix-12 basically is two Xpander in one box plus a keyboard, but 
then again it is missing stuff the Xpander has (like CV In).

> 4.  While I'm at it, just what are the "15 filter modes" on the
> Xpander?

LP 1-, 2-, 3-, 4-pole
HP 1-, 2-, 3-pole
HP 2-, 3-pole w/ LP 1-pole in series
BP 2-, 4-pole
Notch 2-pole
Notch 2-pole w/ LP 1-pole in series
Allpass 3-pole (phase shift)
Allpass 3-pole (phase shift) w/ LP 1-pole in series


Achim.
-- 
+<[Q+ Matrix-12 WAVE#46 Neuron microQkb Andromeda XTk sonic heaven]>+

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