DFAM n Stuff 9. Well, I suppose something bothered me about DFAM n Stuff 8. In the end, multiplication of two numbers to influence the pitch of the oscillators, cutoff frequency of the VCF, and amplitude of the VCA seemed a little off. Let’s have a look at the math:

Let’s say we use a scale of 0 to 10. Two 5’s, 5 x 5 = 25. Then 25/10 = 2.5. The end result should really be the average of the two to reflect the original numbers or even 10, depending on how you want to treat your numbers.

The result of 2.5 is more of an exponential result. Take 8 x 8 = 64. 64/10 = 6.6. Or 9 x 9 = 81. 81/10 = 8.1. The farther up the scale we go, the closer we get to the top. I think the linear result to be better in this case.

What is the difference in this version. In the NYSTHI ConstAddMult modules, where number were previously multiplied and the product divided by 10, those two numbers are added and averaged (divided by 2, to make things transparent with the modules).

Here is the blurb from the previous version:
After a lot of revisions, realizing that there are three EG’s, taking care of allowing the VCO’s to drone and still be controlled by the velocity sequence, and incorporating the velocity into all of the EG’s, I think I have a full featured DFAM. The sequencer still needs a look.

I have this project as ready to go but will make changes if needed.

Take note that there are a lot of options in this version that depart from the Moog hardware. I used DADSR(H)+ EG’s which means the user has to set the envelopes to behave like the DFAM. Pretty simple actually. Set the attack to low, use decay as desired, sustain at 0, release at 0.

I had some welcome feedback on the EG’s. If you want fast or slow envelopes, the adjustment is made in the attack. A short attack results in a fast EG and a long attack results in a slow EG. But there are other options if you want to play with the module’s provided controls. There is actually a 1x/10x switch in the DADSR(H)+’s lower left corner. This will produce a noticeably different effect than adjusting the attack of the EG’s. If you want, add a relevant module to make the attack settings short and long. This could be accomplished using NYTHSI ConstAddMult module, an Impromptu Modular TACT-1 module, and a BogAudio Switch module. As you can see, these modules are in use all over the patch.

This is something I will have to revisit in the future to make a build tutorial/user manual.

Have fun and let me know if you find anything that is not quite the way it should be!