Monday, 10 January 2022

ToneGym Chord Progression Generator

 This looks like a useful site.
And it's free too.
 

 

Is learning music theory going you make you less creative as an artist?
I don't think so.
The more tools and knowledge you possess, the better I feel.

Moog sub harm & DFAM 10

...

Night Owl Patch

This will be released on my 3rd album - Pursuit of Harmony.

 TRIGGER out of the DFAM ----> Clock in from the SUB H 
This is the sync. The DFAM is master.

This is a interesting patch as adjusting the VCA envelopes on either synth will
have an effect on the other synth.
DFAM VCA EG Out to Subharmonicon Cutoff In
DFAM Pitch out to Sub VCA in 
 
The Trigger from the DFAM effects the PWM of VCO1 

Moog General

Moog - Mother 32/ DFAM/ SubHarmonicon
+ Moog Mother 32 - set up mode - assignable output, midi channel, tempo input settings
+ Moog sub harm & DFAM 10 ..... live jam with patch notes


Moog Modular
+ 901 VCO

Sunday, 9 January 2022

Helvetica Scenario - NLC - Build notes - part 2


 These are part 2 of my build of the Non Linear Circuits Helvetica Scenario module.
Part 1 is here:

Its a dual sample & hold module.

The module has a slew circuit added to each channel.

Andrew  has I think used the Buchla SOU for some inspiration.
the Buchla 265 Source of Uncertainty uses as a source,
white noise and a 100Hz oscillator
 
 
 
 
 
This module instead contains a simple jerk chaos circuit running at approx.
300Hz to supply a signal for sampling. 
 
Well what actually is the Helvetica Scenario ??? 
It's all about the calcium molecule

"The calcium molecule contains a triple helix and is based on a semi-permanent structure of four electrons supporting three protons. The protons feed electrical information to the central queen atom, which is vital to the structure of the molecule. Without the queen atom at the centre, the entire structure would collapse causing the Helvetica Scenario."  :-(

Oh my God. Sounds like we are all going to die.

Watch the video to learn more about this dangerous condition:


 
Hopefully, after watching this you will have realised its all a joke.
Your teeth aren't going to fall out , and your bones won't crumble to dust. :-)
 
-----------------------------------
 
 Getting back to the build.
The module uses 3 LEDs
One LED (3mm or 5mm) is for the chaos circuit.
Andrew recommends blue.

The other two LEDs are bipolar indicators that you will see on the front panel
Ive been waiting for some bipolar LEDs to arrive.
 
 These are Red/Blue
Finally. they are here.
If using red/green from Tayda, 1k is ok. 
If using red/blue, probably 4k7 is best.



If using factory vactrols , maybe try 1k for RL.
 
I'm also going to build my own vactrols.
So I Used  4.7k for the RL resistors



 
I'm trying some GL5549s with some yellow LEDs  

Some info about vactrols:


The 1M* at the base of the vactrols set the maximum slew rate, feel free to leave them off or change to suit your needs (lower resistance = less slew). If not sure, just install 1M for now.


Do the headers next.
 
 
These join the two PCBs
 

B100k - linear pots

Jacks


OK ... all done.

The blue LED... part of the chaos circuit










Friday, 7 January 2022

Dustwork - self tuning VCO

Some build notes for the Dustwork VCO.
The  official website is here:
 
And the build guide
 
A super easy build since most of the SMD components are already installed
All parts supplied.
 
This is version 2
Its 6HP
A VCO that can tune itself. Imagine  !!!
 



Just 1 PCB
 
 
The way it works is simple. Send it a ‘C’ note over a 1v/oct CV signal, hit the button and the module will do the rest. It will calculate the offset voltage needed to bring that C up to perfect pitch. It’s recommended (as with any analogue synth) to let the module warm up for 10 minutes or so before tuning up.
 
 
The AS3340 chip is Alfa's modern equivalent of the famous CEM3340 voltage-controlled oscillator. It provides Ramp, Pulse/Square, and Triangle outputs, has inputs for oscillator sync, is temperature compensated and stable, and provides excellent 1V/Oct tracking.
 

Look for the bevel on one side of the chip to help orientation.
The bevel is the same side as the dot on the PCB.

For more info

Next add a 300k resistor between pins 15 & 16 of the AS3340 chip
 


2x 10K trimpots
 

The two headers.
A 6 pin and 10 pin.
 

The 10 pin is of course the power supply.
the 6 pin is used in programming


The 3 pots.
they are all B100k
These go on the other side of the PCB
 


two 3.5mm socket jacks

the push button switch


and the LED
short lead = flat side = cathode
 

it’s time to program the module. For this,
you’ll need the USB Tiny programmer, along with AVRDUDESS programming app which you
can find online. 
 
  you need to download the latest firmware (it’s a .hex file) on the product
page on Duskwork.net
 
To be continued....
 
Links

Thursday, 6 January 2022

Some scales for the electribe 2

The shortcut  for the scale section is Shift + scale 
Press "exit" to apply settings

 
The available scales are:
Chromatic : C, D♭ , D, E♭ , E, F, G♭ , G, A♭ , A, B♭ , B
ionian : C, D, E, F, G, A, B
Dorian : C, D, E♭ , F, G, A, B♭
Phrygian,: C, D♭ , E♭ , F, G, A♭ , B
Lydian : C, D, E, F♯ , G, A, B
Mixolydian : C, D, E, F, G, A, B
Aeolian, : C, D, E♭ , F, G, A♭ , B♭
Locrian, C, D♭ , E♭ , F, G♭ , A♭ , B♭
Harmonic Minor, C, D, E♭ , F, G, A♭ , B
Melo (melodic) Minor: C, D, E♭ , F, G, A, B
Major Blues
Minor blues
Diminished
Com.Dim
Major Penta
Minor Penta
Raga 1,2,3,
Arabic
Spanish
Gypsy
Egyptian
Hawaiian
Pelog
Japanese
Ryukyu
Chinese
Bass line
Whole tone
Minor 3rd
Major 3rd
4th Interval,
5th interval,
octave
 
-----------------------------------------------------
 
 Ionian
T – T – S – T – T – T – S
 
In the Key of C the notes are
CDEFGABC
 
In The Key of C# 
C# – D# – E# – F# – G# – A# – B# – C#
 
-----------------------------------------------------------------------------------
 Chromatic
 
In the Key of C
C, C#, D, D#, E, F, F#, G, G#,A,  
 
This will map a regular keyboard across the pads
 
 

 The top row of pads/notes is higher in pitch than the lower pads

 

Tuesday, 4 January 2022

Moog Mother 32 & DFAM Jam # 1

..

 This will be released on my 3rd album - Pursuit of Harmony.

Some patch notes
The Politics of Trust
I clocked everything to abelton using a touchprone MIDI to Clock converter
The sync:
DFAM Trigger out ----> M32 Tempo in.
This really speeds things up.
 
Another way to sync is:
DFAM Trigger out ----> M32 RUN / STOP in
---
Moog General

Moog - Mother 32/ DFAM/ SubHarmonicon
+ Moog Mother 32 - set up mode - assignable output, midi channel, tempo input settings
+ Moog sub harm & DFAM 10 ..... live jam with patch notes


Moog Modular
+ 901 VCO

 

Saturday, 1 January 2022

M-32 & DFAM acid patches

Some New Years Day patching.
Ive been planning to play around with these puppies for ages and never quite had the time.
I guess lockdowns have a few advantages

The Moog Mother 32 and DFAM sound great together. I love acid sounds and its one of the first things I seem to gravitate to whenever I play with a new synth.

Though Moog use transistor filters in comparison to Roland's diode ladder filters, I think they still 
make for good 303 imitations and add a slightly different feel to the acid sounds we love.

Below are a few different patches to try out.
Of course these are just starting off points.
Working through some of these patches is a great way to learn how to use these synths
Actually, I still prefer the acid sound I get from the DFAM, but these are also pretty good. 
https://djjondent.blogspot.com/2021/12/dfam-moog-acidish-baseline.html

The addition of a mother 32 to the setup means its really easy to clock this (using MIDI) from a DAW such as Abelton. 
--------------------------------------------

This first patch combines "Tribal Drums" with the "Classic Acid bass" patch.
 
Patch the gate out from M32 to Clock/adv of Dfam (red)    This is how you sync these two machines.
The M32 is the master. 
 
 This next one is the "Acid is the way patch". from the studio bundle.
 
1. Patch the gate out from M32 to Clock/adv of Dfam (red)
    This is how you sync these two machines.
2. Assign (M32) ---> mult (M32) (orange)
 3. Mult 2 ---> VCmix Ctrl (green)
4. Mult 1 --->  LFO rate (purple)
Thus, the signal from the assign out controls both the mixer and the LFO rate.
 The assign out jack is really impt in this patch.
 This is as the name suggests an assignable output, who's function is programmed in setup mode.
It can be anything from clocks, random voltage steps, triggers, to MIDI CC

5. EG ----> mix 2 (yellow)
   Mix 1 & mix2 are inputs to a voltage controlled mixer.
   Thus, the M32’s VC mix is used as a VCA. It controls the amplitude of M32’s envelope.
6. VCF Mix ---> VCF cutoff (blue)

7. VCO Saw Out ----> Ext. Audio In. (pink)
whenever a cable is plugged into this jack, it overides the noise to this jack (clockwise position on the M32s main mixer. Thus in this case, a sawtooth wave replaces the noise source on M32’s mix knob. 
 
8. M32 LFO Tri Out -----> M32 Mix CV In. (red)
Thus M32’s triangle LFO controls the mix knob. 
 
9. M32 LFO Square Out ----> DFAM 1-2 FM Amt input. (green)
 Thus M32’s square LFO controls the FM depth on the DFAM. 
 
10. DFAM Pitch Out to DFAM Noise Level In. (dark red)
This will make DFAM’s pitch sequencer control the noise level of DFAM.
 
11. DFAM VCF EG Out to Mother-32 VCF Res In. (pink)
This will make DFAM’s VCF envelope control the resonance level of Mother-32’s VCF. 
 
------------------------
 
This last one combines the Da Funk Patch with my variation of the big bottom Bass patch.
The original BBB patch set the seq pitch mod switch to off, which disabled the top sequencer.
The VCF mod knob amt is impt.
The vcf mod polarity of the m32 can be both -ve or positive, but +ve is better
(i have it marked -ve in the pic)
And both square & saw sound good on the m32.
 


The gate from the M32 needs to be multed. One copy patched to the clock input of the DFAM
and another to the VCA CV input of the M32