Sunday, 18 October 2020

Erica Synths Syntrx and an original Synthi AKS.

 Part One of the shootout between the Erica Synths Syntrx and an original Synthi AKS.

Simple patches are compared highlighting a single Oscillator, FM, RingMod, Filter, Reverb & Noise.

This video simply compares Sound and Timbre, not the functionality, extras or differences in the Matrix implementation. (Part Two will look at a Putney VCS3 and some more complex patches).

Thanks to Allinaire for the use of his new Syntrx.

Saturday, 17 October 2020

EMS Synthi-E - Trapezoidal Envelope Generator

 Playing around with the Synthi-E's envelope shaper.


It's an unusual beast.
 

We are all used to a 4 stage ADSR style of envelope.
EMS however used the Trapezoidal Envelope.
This also has 4 stages. They are Attack, ON, Decay, Off.
 
The Synthi AKS uses knobs to adjust the 4 stages, and can be set to
"manual" or "free run" triggering.
The Synthi E is much simplier. 
Attack & decay are set using the rise & fall sliders.
On /off are determined by the gate length.

Connecting a gate to the second black input form the bottom  (bipolar "?") will make it behave as if it were an LFO. 
The envelope starts on both the rise & fall of the gate ... I think this is the equivalent "free run mode".

The gate itself is interesting ... it's a short to ground.
Touching a cable with your bare fingers will produce the required gate.
This is essentially an S-trig. 
Manufacturers like (vintage) Korg & Moog use S-trigs.


 
About the patch:
I'm using a square wave to trigger the EG.... which is opening /closing the VCA.
The filter is in self oscillation mode.
 
If you still want to trigger the Synthi' gate with eurorack, you will probably need a V-trig to S-trig converter. I haven't tested this myself. These synthi's are rare and expensive so be careful if you plan to try this.
BTW, I don't recommend plugging anything into your synthi which is not from EMS.
 
 

Analogue Systems still produce a Eurorack version of the Trapezoidal Generator.
(Thanks to James from Synthwerks for the info) .
"AS make both it (RS-510e) and the EMS filter module (RS-500e) both 
now with universal mounting hole and power connector for both AS and 
Doepfer systems".
Erica Synths also has a Euro format envelope generator module... It looks like
two EMS Synthi functionality inspired looping envelope generators with simultaneous unipolar (0V - 10V) and bipolar (-5V - +5V), VCA, Noise generator and Sample & Hold.  ...... That's nice :-)

 
I wonder if it's inspired by the Synthi 100, who's envelope shapers also have dual trapezoidal outputs.
The Synthi 100's envelopes however differ in that they have 5 triggering modes (Signal threshold, Hold, Single Shot, Free run & Gated free run) & the 4 stages are Delay, Attack, On, Decay.


The addition of a second output for each of the synthi 100's trapezoidal generators is pretty neat.
The second output lags behind the first by one quarter of a complete trapezoidal cycle.

 Links

Friday, 16 October 2020

Allinaire - Hacking into Max for Live Video Device

Allinaire latest track. He told me the video was produced using a 'hacked' or modified existing Max for live video device (details to follow). Learning by experimenting with existing Max devices is a valid way of learning. Whereas other prefer to start from scratch Allinaire dives right in and stands on the shoulders of experienced programers. He calls it 'Circuit bending existing code'!

 

;;;;; 

Allinaire - youtube channel


Saturday, 10 October 2020

Elk Electronics DIY Workshop - Elmyra Synth

Some pics from yesterdays DIY electronics workshop.
 
We started with a beginners synth build  : The Elmyra by Neutral Labs.
 

The workshop was held in Wollongong , NSW, Australia.
 

 
Youtube : full kit build
 



 

 
  The Elmyra uses a Teensy microcontroller.
 

Thanks to everyone who attended.
Such a satisfying day.
We all left with a fully functioning synth that we built ourselves.
 

..

The next Electronic Music workshop will be held in November in Wollongong ... 
Sat Nov 21st.
Address: Shop 266 Crown St, Wollongong NSW 2500
It will probably cover modular synthesizers .. focusing on Eurorack

Thanks for organising this workshop Ed.
We all had a great time.

ARP 2500 - 1026 Preset Voltage Module

The 1026 is a rare module. I think only a few were produced and Ive never seen a original
though there are a few reproductions around.
Probably the year of production of the originals was about 1970 ???  
 


There are 16 preset voltages : 2 rows of control voltages 
each holding 8 individual CV values.
You set their value with the pots.
You trigger the CVs by pushing the associated momentary button
or with a 10V gate. (at lines 1 to 8).
The output voltages appear at lines 9 & 10.
Pretty simple.
The manual suggests using this with the 1027 sequencer or 1050 Mix-sequencer.
There is a socket at the rear of the unit to connect to a 1027 or 1050.
 
Specs:
Output voltages: 0 to +10V
Output impedances: 1K ohms
Input impedances : 100 K ohms
Power requirements: +/- 15V @ 20ma , regulated to +/-0.1%

 
 
 
 
 
 

It reminds me very much of the Serge programmer.
I have of course, rotated the pic to illustrate my idea.
I wonder which module came first?

The programmer has evolved into many forms today.
Think Makenoise pressure points & 0-control 
or Synthwerks 4x4












Friday, 9 October 2020

Online 808 . 303 emulation from Roland.

 There is no excuse not to add this to your bookmarks.

https://808303.studio/

 Its from Roland, sounds great & is free.
 
Roland and Yuri Suzuki have joined forces with the Design Museum to create 808303.studio.

  
A "Guy called Gerald" demos the emulation


Electronic: From Kraftwerk to The Chemical Brothers - The Design Museum

 If you're in London, don't miss this:

 


Hope the exhibition comes to Australia one day.