Korg Poly800/EX800 Users

----- Original Message -----

From: korgpolyex800

To: korgpolyex@yahoogroups.com

Sent: Saturday, December 08, 2007 7:07 PM

Subject: [korgpolyex] Portamento mono mode - breakthrough!

Yes, it's true. I got portamento mono mode working today.

It's not quite finished but the big parts of it are done.

First of all, I intercepted the chord mode and replaced it with
portamento so you just press the chord button to go into portamento
mono mode. I have never ever used the original chord mode so I think
it safe to replace it with portamento mono mode. If anyone really,
really wants to keep chord mode just let me know.

Second, I figured out how to set up and trigger a note to sound and
follow the envelopes as normal. That was a big deal because I still
don't understand all of the EG code and so I was fumbling around quite
a bit before I got it working.

Third, I figured out how to insert a note follower subroutine into the
real time code so that the note would slide from the first note to the
second note.

At the moment, what you get is a note stepping slide that steps from
one semitone to the next. This is because the code I wrote steps the
DCO's from one semitone to the next.

In order to smooth the slide out, I now need to insert an additional
subroutine that will slide the master clock one semitone in between
each DCO semitone change. I don't forsee this to be too difficult.

At of now, I am using the first LFO (the one that now applies only to
the DCO MG) to determine the slide rate. But eventually I foresee
using an independent LFO just for the portamento slide rate.

I will make sure that there is a sysex and control change implemented
that will let us select portamento mono mode via MIDI too.

As soon as I get the slide completely smooth, I'll post another
youtube video to demonstrate it.

But there you have it, your Poly 800 MK1 and EX800's are going to have
portamento mono mode.

Mike.

> Yes, it's true. I got portamento mono mode working today.
> 
> It's not quite finished but the big parts of it are done.
> 
> First of all, I intercepted the chord mode and replaced it with
> portamento so you just press the chord button to go into portamento
> mono mode. I have never ever used the original chord mode so I think
> it safe to replace it with portamento mono mode. If anyone really,
> really wants to keep chord mode just let me know.
> 
> Second, I figured out how to set up and trigger a note to sound and
> follow the envelopes as normal. That was a big deal because I still
> don't understand all of the EG code and so I was fumbling around quite
> a bit before I got it working.
> 
> Third, I figured out how to insert a note follower subroutine into the
> real time code so that the note would slide from the first note to the
> second note.
> 
> At the moment, what you get is a note stepping slide that steps from
> one semitone to the next. This is because the code I wrote steps the
> DCO's from one semitone to the next.
> 
> In order to smooth the slide out, I now need to insert an additional
> subroutine that will slide the master clock one semitone in between
> each DCO semitone change. I don't forsee this to be too difficult.
> 
> At of now, I am using the first LFO (the one that now applies only to
> the DCO MG) to determine the slide rate. But eventually I foresee
> using an independent LFO just for the portamento slide rate.
> 
> I will make sure that there is a sysex and control change implemented
> that will let us select portamento mono mode via MIDI too.
> 
> As soon as I get the slide completely smooth, I'll post another
> youtube video to demonstrate it.
> 
> But there you have it, your Poly 800 MK1 and EX800's are going to have
> portamento mono mode.
> 
> Mike.