A-142-4 plus Expander Demo by Hawklord2112

Regular video-uploader and contributor to the blog Hawklord2112 uploaded another nice new video.

He bought himself a new A-142-4 Quad Decay module and also an extra expander module for it.
Each of the 4 sub-units of the A-142-4 has a pin header with two pins available.

When the two pins are shortened (e.g. by means of a jumper on the PCB board or a toggle switch connected to the two pins) the corresponding sub-unit changes to a loop mode. 

In this mode the unit triggers itself like an LFO..

The expander is made of a pre-manufactured panel, punched for 8 sockets, almost identical to the A-180 front panel but without the printing.
Those panels are very useful for DIY-projects like this.
In his video he explains how it all works.

Video: A-142-4

"Basic demo of the Doepfer A142.4 Quad Decay generator and DIY breakout expander"

Uploaded by hawklord2112

A-143-9 Demo by Hawklord2112

Video: A-143-9 Demo

" Simple runthrough of the Doepfer A143-9 VCQLFO"

Uploaded by hawklord2112
Twitter: https://twitter.com/hawklord2112

Doepfer A-143-1 Demo by Hawklord2112

Doepfer user, eurorack fanatic and PatchPierre supporter Hawklord2112 recorded a nice video explaining the basics of the Doepfer A-143-1 (Quad) Complex Envelope Generator /LFO module.

Video: Doepfer A-143-1 Demo

"Some of the more basic features of the doepfer A-143-1 Complex Envelope / LFO module

Uploaded by hawklord2112

Follow hiawklord2112 on Twitter via https://twitter.com/hawklord2112

Video: I Ran Out Of Cables

Hawklord2112's modular rack

A new video by 'friend of the blog' Hawklord2112 popped up on YouTube today.

An exciting abstract track , made with his big modular that  mainly consists of Doepfer modules.
He was also kind enough to send me an overview of his setup...
Click on the picture on the right to take a look.

It all sounds and looks very impressive!

Setup overview made with
http://www.modularplanner.co.uk/

Video: I Ran Out Of Cables
" - zen modular again, nearly both kinds!
unfortunately you can't see the fourth row of modules.
the only ones *not* used in this patch are my TheAbsent feedback loop, A114 Ring Modulator and A164.1 manual gate.
and even then only because i ran out of cables.
- more should be arriving shortly."

Don't forget to follow him on Twitter and/or subscribe to his YouTube channel

Analog Noise vs. Digital Noise

My Doepfer A-100 system includes 2 Noise different generators, the A-118 Noise/Random Voltage Generator, and the A-117 Digital Noise Generator.

A noise generator is an oscillator that produces an internal noise signal, typically white or pink noise.

Noise Generators produce random signals, containing harmonics on all frequencies, and can be modified into the desired tone. 

The A-118 produces white and colored noise. The white noise is the well-known 'hiss'.

The spectrum for the white noise has the same amount of energy in every section. 

The colored noise output of the module is a mix of blue noise ( high frequency component ) and red noise ( low frequency component )

Noise in the audio spectrum can be used in many ways, most commonly in wind-effects, or in cymbal crashes and hi-hat -sounds.

The A-117 Digital Noise sounds very different and has less control possibillities.

This module has 2 outputs, consisting of mixes of multiple oscillators to re-create vintage Roland TR-808 and TR-606 sounds like the hi-hat, cymbals and cowbell.

One output has a mix of 2 fixed digital oscillators, that can be used as a basis for the distinctive 808 cowbell-sound, the outher output has 6 oscillators to form cymbal and hi-hat sounds.

The Random outputs of both modules can be used as a Control Voltage for all kinds of stuff. I prefer the Analog Noise for that, simply because it has more controllers.

I often use it as a modulation source to add subtle changes in a filter (check out a short example HERE), but these modules can also provide interesing effects in combination with the A-148 Sample and Hold module. More on that in a later post...

Video: A-118 Demo 

A118 Noise and Random voltage generator demo made by @Hawklord2112