M3 Organ Drawbars Tutorial - anyone interested

McHale · Post by **McHale** » Tue Jul 21, 2009 7:56 pm

All you ever needed to know about the hammond organ harmonics:

http://www.electricdruid.net/index.php? ... fo.hammond

-Mc

a.schemkes · Post by **a.schemkes** » Tue Jul 21, 2009 9:57 pm

That was interesting to read, also the article on the DCO of the juno's.
(I had one...)

X-Trade · Post by **X-Trade** » Fri Aug 07, 2009 5:14 pm

I don't have an M3 but i've been following this thread with interest (I do have a TR).

I've just been playing around with some organ plugins because i've been trying to make an organ plugin myself (complete with oscillator for every note, I've just finished connecting up all of the points in the key/osc matrix).

The consensus seems that the following are in fact correct for the nine drawbars on a hammond organ:
-12, +7, 0, +12, +19, +24, +28, +31, +36

of course, that second one always sounds odd when you are going through them one by one, but the first two are considered a group of non true harmonics or sub harmonics.

Its up to you which one you omit, in order to get it down to eight, or if you find another way to control them.

Of course, it still is quite heavy on polyphony and will never sound quite the same. I think more Workstations need a built in organ emulation like in the OASYS or in the form of an expansion board like the EXB-Radias.

McHale · Post by **McHale** » Fri Aug 07, 2009 10:00 pm

Use the Slider for #9 (to the left of the touchscreen). That's how I did it.

-Mc

Jakub Doe · Post by **Jakub Doe** » Mon Aug 24, 2009 8:32 pm

This is very nice tutorial

I have only one problem: if i play with greater velocity or speed up arpeggios, i get some noises and cracks. After setting individual timbres volume quieter, sound is little bit better, but nevertheless crackly. Anybody can advice, what I can do about this?
Thanks!

BasariStudios · Post by **BasariStudios** » Mon Aug 24, 2009 10:16 pm

I tried this today, with the various pitches but it gets very distorded
when grabbing chords, i dont know if it can be usefull or maybe i am
missing something...i will try again.

edessaios · Post by **edessaios** » Sun Aug 30, 2009 9:32 am

I hace also the same problem.There are a lot of cracks in my sound.

EVPS · Post by **EVPS** » Sun Aug 30, 2009 11:06 am

Sorry I have been away for a while, in response to the volume issues a workaround I use is the M3's per-Timbre EQ settings. This works better than altering the volume alone, if you thin-out the higher registers. Top and tail the frequencies of the middle registers and then high cut the lowest.

Its not ideal, if Korg could implement something closer to Kurzweils KB3 system in some sort of operating system update we could get it closer.

RichF · Post by **RichF** » Sun Sep 06, 2009 9:51 pm

Hi folks,

I've experimented with a few Combis like the one described here, and I thought I could help those who have heard lots of unwanted distortion.

While making the simple sine wave Program that you'll use to populate the Combi, lower the amp level of the sine wave to about 65. This wil not only clean up all the distortion (even on a heavy, smearing gliss), it also leaves enough headroom to add a little of the "Drive" parameter (on the same page as the level parameter). This will help warm up the sound quite a bit.

McHale · Post by **McHale** » Mon Sep 07, 2009 1:50 am

Yup, that's exactly what I did.

One thing to help speed up the combi making process is to use the GM SINE lead patch already created. I'm not in front of the M3 tonight and won't be home until tomorrow. But if you look under the leads category, I think it's G61(2). After I did set progs 1-9 as the identical GM SINE prog, I then set the intervals (I'll post the appropriate tuning transpose numbers tomorrow), I copied the IFX's and MFX's from an organ patch I liked as well as lowered the amp a little and it's distortion free.

It doesn't sound anywhere as close as VB3 but the more I work with it, the more little things I find improve it.

-Mc

mocando · Post by **mocando** » Mon Sep 07, 2009 1:56 am

I assume the combi is M50 compatible. Any chance of sharing it?

McHale · Post by **McHale** » Mon Sep 07, 2009 10:24 am

Sure. I'll be home in about 6 hours or so. I always create my patches on the M50 so they're ALWAYS compatible.

-Mc

X-Trade · Post by **X-Trade** » Mon Sep 07, 2009 11:33 am

some more thoughts:
it would be best to create some kind of organ drawbar multisample, which includes a bit of the leakage from adjacent tonewheels. then you could use that for your drawbar program sample, which would add in a bit of that chomatic noise to your sound. has a very nice effect.

also, in order to reduce the clipping occurring, and giving a good drive/'power drain effect' true to the real hammond sound, I find that adding a drive then compressor or limiter as the first effects tends to give it a really authentic sound. note that this is aside from per-voice drive which won't produce the kind of distortion cross-talk dissonance that you get from the per-voice drive.

e.g. you notice on a real electric organ, you lean on the keyboard, and the overall volume level isn't really much higher than when you press one key. hence the 'power drain' compression effect. makes it a very organic beast.

McHale · Post by **McHale** » Wed Sep 09, 2009 3:50 am

Haven't had a chance to clear the bank and export the patch (wonder how tough it would be for us to swap individual patches via .syx).

ANYWAY...

To create your own drawbar, use the GM patch for simple SIN, set tracks 1 thru 9 to it and transpose the tunings to this:

-12 7 0 12 19 24 28 31 36

Use your mixer settings to adjust the levels of each track.

I have practice tomorrow night and 2 gigs this weekend then I'll have more time to spend on this patch. The more I play with it, the more I use it. I think with the right combination of settings, we'll have something decent to work with.

-Mc

mocando · Post by **mocando** » Wed Sep 09, 2009 4:48 am

Awesome, will try it tomorrow night.