Wiard-Malekko Noisering

Thanks to Grant Richter and Malekko for making this module available.
I was searching for another random source module to complement the Wobblebug and came across the Noisering.

I especially love the old Celtic/Gargoyle graphics of the Noisering
 So what's the difference between the two modules?

It seems like the Wogglebug evolved from the Wiard 300 series and is a staple of the DIY scene.
There are many variations. See my post on the Bug here.
It was inspired by the Buchla 265 Source of Uncertainity module and  behaves in a very non-linear way when controlling smooth and stepped random voltages. The wogglebug is a oscillator as well as a source of random voltages. ... it is super useful as it can output gates, CVs, and audio all at the same time.

The Malekko-Wiard Noisering seems to trace its lineage from the Wiard 1200 series. These modules use the Frack rack format.  It is based on comparators & analogue shift registers and it doesn't seem to behave as "crazy" as the wogglebug.:-) So I think it is really useful as a "randomish sequencer".... more than the WoggleB is (in my opinion). You can also use it as an oscillator

 I actually have a plan to use both modules in my rig. Possible patches:

Clock out from the Noisering to the Woggle . This clocks the WoggleB and gives control of the slew. Then I run the  Noisering outs into each of the WoggleB heart ins.

Another possible patch uses the WB Clock/Chaos control in instead of the external clock input.

NoiseR out (either 1 or 2) -> WoggleB Clock/Chaos control in
WoggleB Smooth CV Out -> NoiseR Ext Rate in


At the heart of the Noisering is Noise and a Tone Wheel pseudo-random shift register.
The Noisering can act as a
1  Noise source
2. Random clock
3. Random CV generator
4. VCO
5. Audio processor

In the lower left we have two random CV voltage outputs.
They can operate both in the sub-audio & audio range
1. n+1  (9 voltage levels, 0-10V)
2. Two to the exponential of n (256 voltage levels, 0-10V)

Outputs 1& 2 are normalised to the External rate pot directly above it.
The Ext Rate knob modulates the (overall frequency) Rate knob (right at the top) and effects the noise , clock out and the two CV outs

The noise out is +/- 4V
The Clock output is a +10V square wave. (1Hz-10kHz)

Chance Vs Change

Chance controls the number of 1s and zeros extracted from the internal noise source.
At 12 O'clock:  No of 1s = No of Zeros (Equal balance)
At 7 O'clock :  Mostly Zeros
At 5 O'clock : Mostly 1s


Change controls the Data Recycle through the shift register.
At 12 O'clock: Equal amount of old & new data (Equal balance)
At 7 O'clock :  Only old data is recycled through the shift register
At 5 O'clock :  Only new data is recycled through the shift register

Both Chance & Change have CV inputs above.
In the centre we have a external Chance (comparator) input. This allows you to change the signal feeding the shift register that then produces the CV & clock outputs. You can plug in either audio or control voltages

Above all this are 8 LEDS.
The centre 4 LEDs indicate the shift register state.
OFF = same
RED = greater
Green = lesser

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These particular Gargoyle Wiard modules are getting old. All through hole.
Everything these days is going SMD.

When this eventually dies (which will happen to all of us one day) I'd like to try to fix it.

Hopefully Malekko will still be making new ones and repairing these older versions.
But just in case these appear to be the parts needed to keep these alive.

IC 2 .... CD 4053 - CMOS triple 2 channel multiplexer
IC 1 - 4015 - shift register
TL 074 - op amp
NE 555 -- timer
LN 324 - quad op amp x 2

cd 4053

cd 4015 --- the shift register

The two LN 324 Quad op amps probably form the comparator circuit. and the 4015 does the shift registering.