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Three controllers done

2007-07-07 by korgpolyex800

Thanks for that Summa,

I will make sure I follow the GM2 MIDI spec from this point forward.
Just think of it, the EX800 will actually be GM2 compatible!

Also, I just fixed the modulation generator which had gone awry after
I made the switch to the new EEPROM code. When you set the frequency
of the MG, the CPU does a lookup into a table of values that are used
to determine the actual cycle rate. Only problem is, the lookup code
could not work across a boundary larger than 256 (8 bits) and when I
relocated the code, what do you think happened but that the table
ended up straddled across an 8 bit boundary (by amazing chance - I
should buy a lottery ticket). This caused the MG to go up and down in
cycles instead of smoothly speeding up as the MG value went up. I
relocated the table back inside an 8 bit boundary and the MG is fixed.

So now I retested my MG controller and it works great.

So we now have three fully functioning controllers that the original
EX800 never had.

Mike. 

--- In korgpolyex@yahoogroups.com, "Summa" <flotorian@...> wrote:
>
> When it comes to the controller numbers, why not using midi standards
> 
> #74 for cutoff and #71 for resonance 
> 
> like most of the major companies (Yamaha, Roland, Korg) do and most 
> of the controller keyboards having a predefined setting for...
> 
> http://www.midi.org/about-midi/gm/gm2_spec.shtml
> 
> ...Summa
>  
> 
> On 6 Jul 2007 at 1:56, korgpolyex800 wrote:
> 
> > Hi all,
> > 
> > Well, today I created to new MIDI controllers for the EX800.
> > 
> > Now you can control VCF cutoff and VCF resonance via MIDI controllers
> > 3 and 4.
> > 
> > So that's another two new REAL features deployed in the new software.
> > 
> > I've also implemented a modulation frequency controller on 5 but I
> > didn't quite get it working right so I can't claim total success on
> > that one - yet.
> > 
> > But two and half controllers in one day is good enough for me.
> > 
> > Would anyone like to see a youtube video demonstrating the new
features?
> > 
> > Have a great weekend all.
> > 
> > Mike.
> > 
> 
> -- 
> 
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> 
> http://www.summasounds.de/
>

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