ST Modular - Good & Evil modulating Pyxis, EFI and Honeyeater

Published on Apr 24, 2020 Stefan Tretau

Sequencer = Flitzem Deför
Mixing = PAE
ENV = FAY Mk2

ST Modular - INFLUENCER (Multiple Random CV Generator)

video upload by Stefan Tretau

00:00 LFO, Internal Clock & Random
01:14 Fall and Random Fall Length, Trigger from internal Clock
04:01 Sample & Hold/Track
06:17 A/B Comparator
07:37 Smooth CV Generator
09:00 Noise Out

14HP Multiple Random CV Generator

RA INFLUENCER provides a general source of useful CV tools and musical unpredictability. The module is divided into five sections, each of which performs a unique function.

The TOP SECTION is the VC INTERNAL CLOCK and TRIANGLE LFO. The rate of the clock and LFO can be controlled by the RATE knob or CV. The clock signal is normalised to the trigger input of the FALL section. The TRIANGLE wave at the WAVE socket is also routed to the WAVE/RNDM SWITCH of the FALL section. When the switch is in the upper position and the attenuator is turned to the left, the
wave will affect the FALL length. In the lower position, the FALL CV is slowly randomised.

The SECOND SECTION is a FALL ENVELOPE GENERATOR. It can be triggered internally or externally and its fall time can be controlled by the FALL TIME knob or by CV. An inverted version of the fall output is also available.

The THIRD SECTION is the SAMPLE & HOLD section. In one mode, it can sample and store a voltage from the FALL CV socket and output it at the SP OUT socket when the gate at GATE is high (Sample & Hold). In another mode, it can pass through the incoming voltage when GATE is high. It then samples and stores the last voltage applied when GATE is low (Sample & Track). The modes are selected by the MODE switch. The STEPPED potentiometer controls the level of the incoming CV signal. Internally the CLOCK is normalised to the GATE input. The CV input can be fed b an external signal, an internal SMOOTH RANDOM CV or b internal NOISE. Please note that this section may produce noise bursts in Sample & Track mode.

The FOURTH SECTION is an AND / OR COMPARATOR that compares two mixable inputs and outputs the MAXIMUM CV and MINIMUM CV of both. It also generates a GATE at B-GATE if IN B is greater than IN A. Note that MIN LED barley flashes with low CV levels. The LAST SECTION is a DUAL SMOOTH RANDOM CV GENERATOR. It provides a constantly changing CV at SMOOTH I and SMOOTH II, slowly meandering in about 60 second cycles. The SMOOTH CV input will affect the SMOOTH outputs in unpredictable ways, sometimes not at all. Internallv there is another SMOOTH RANDOM GENERATOR which is normalised to the RNDM switch position of the FALL section, the CLOCK CV and the SOURCE switch of the SAMPLE & HOLD section. Like the others, this SMOOTH GENERATOR may or mav not be influenced bv the INFLUENCE input.

NOISE OUT allows access to the internal NOISE GENERATOR You could also use the module as an OSCILLATOR

INFLUENCER is vour CV powerhouse that offers a wide range of MODULATION SOURCES and an extended source of uncertaintv.

ST Modular - Chains (Attenuator, Offfset, Mixer, Multiple, Manual Voltage and Voltage Switch)

Published on Sep 23, 2018 Stefan Tretau

"Chains Funtionality Test"

ST Modular - Workbench (0HP USB Module)

Stefan Tretau

via ST Modular

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ST Modular - CION (Function Generator)

video upload by Stefan Tretau

"This is only a short overview of the most important functions of CION and I am only scratching the surface here. There is much more you can do with this function generator.

00:00 Cycle & ENV Mode
01:04 Cycle & LFO Mode
01:47 Using External CV
02:56 OSC Mode
04:00 Processing External Audio"

CION is something of a jack-of-all-trades. It can be a CV AD or ASD envelope, a basic filter, a distortion effect, a slew limiter or even a voltage controlled oscillator with waveshape.

The function generator offers an ATTACK and a DECAY potentiometer, which represent the attack and decay times, the positive or negative slew time or the rising and falling edges of an oscillation, depending on the application. There is a CV input for ATTACK and DECAY. The rise and fall times are individually voltage controllable, but they can also be controlled together via the AD input. A shape knob lets you change the CV curve from exponential to logarithmic. The time range per cycle can be as fast as 3ms and last for up to 20 minutes depending on the position of the RANGE switch.

The TRIG socket is used to start the envelope via CV. This can also be done by the press of a push-button.Connect any signal (CV or audio). to be processed to the INPUT jack. Insert a gate signal to add a sustain stage to the AD envelope.

If no external signal is available to trigger the envelope, the function generator can be set to loop mode by the CYCLE switch. When the switch is active, the envelope starts again from the beginning as soon as it reaches the end of a cycle. The CYCLE CV input activates or deactivates the cycle functionality depending on the switch position.

Attack & Decay Envelope
Attack & Decay CV (also both simultaneously)
Shape Control
CV Processing via Input Socket
Trigger Input
Cycle Functionality with CV Control
EOC Output
LEDs indicate Activity on all Outputs
Wrong Polarity Protection
Skiff friendly
3U Eurorack module, 6 HP wide
Power consumption: 45 mA at +12 V and 31mA at -12 VThe module consists of two boards:
Front PCB Panel
Main PCB BACK

ST Modular - Mixing with SUM

Published on Oct 13, 2018 Stefan Tretau

ST Modular - Reverb and Yaksha´s Fate

Published on May 30, 2018 Stefan Tretau

ST Modular - Stereo Compressor (with PO-32)

Stefan Tretau

ST Modular - PHOEBE (AFL Mixer)

Published on Apr 25, 2020 Stefan Tretau

ST Modular - PATH (Dual Sequential Switch)

Published on May 20, 2019 Stefan Tretau

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ST Modular - ALSTADEN (Waveshaping Oscillator)

video upload by Stefan Tretau

"ALSTADEN is your source for harsh and harmonically rich sounds. It is a newly developed waveshaping tone generator and resembles the secondary oscillator of the semi-modular synthesizer „EUPHORIA“. The waves are formed by a combination of diode clipping and folding of the waveform by adding mirror images of the upper and lower parts of the waveform. This creates more high harmonics and interesting timbral variations. It also features an equalizer, which is quite unusual for oscillators, but offers more sonic possibilities."

https://www.st-modular.com/alstaden.htm

ST Modular - YACE (CV Decay)

video upload by Stefan Tretau

00:00 Decays
00:20 Response
00:40 Decay Level
01:03 Decay CV
01:24 Inverted Out to OSC Pitch
01:54 Cycle
02:23 Influence Input
02:59 Gate Mode

Just a Minute - Little case making crazy noises

Published on Jul 9, 2018 Stefan Tretau

ST Modular - KAS ´n Beat #1

Published on Dec 12, 2018 Stefan Tretau

ST Modular - SEND (Aux Send and Return Module)

video upload by Stefan Tretau

"A signal is fed into the mono input and routed to the stereo output.
SEND A mono is sent to uDERVISH REVERB and returned in stereo.
SEND B mono is sent to SINGER DELAY and returned in mono."

Just a Minute - GIVE II VCO melodying

Published on Dec 5, 2019 Stefan Tretau

ST Modular GIVE II posts

Some info on the module via ST Modular

"Give II12 HP Classic Analog VCO with additional Frequency Divider and Waveform Mixing OptionsIt is not a substitution for GIVE I, but rather another version as it is based on the same core circuit. Actually both versions complement each other very well building a powerful complex oscillator.The VCO provides five outputs, the last four of them can be mixed with an integrated mixer: PULSE, SAW, TRIANGLE, 3x PULSE SUB & NOISEPatching a voltage/audio source into FM you can frequency modulate the oscillator. Incoming voltages can be attenuated with FM CV. In the middle of the module you will find the PWM potentiometer. Here you may change the pulse width of the pulse wave. The width may also be controlled via external voltage with the PWM jack and the PWM CV attenuator.Just like all other classic analog VCOs GIVE II also tracks one volt per octave with the help of the 1V/OCT input jack. Each wave can also be hardsynced by an external wave patched to the SYNC jack.In addition to the classic VCO functions GIVE II also provides an integrated frequency divider. The MIX output jack will not only supply the waveforms SAW, TRIANGLE and NOISE, but also provides up to 3 sub octaves derivated from the PULSE waveform. The volume of each suboctave may be adjusted with the potentiometer SUB 1-3. ORIG will adjust the volume of the original PULSE signal. Using the switch ORIG SQU you can flip the SQUARE waveform."

ST Modular - SVCA (Eurorack Stereo VCA with Stereo Thru)

Published on Jun 8, 2019 Stefan Tretau

Cool Joy Division Unknown Pleasures faceplate.

Just a Minute - ST Monster Case #2

video upload by Stefan Tretau

Just a Minute - Semi Modular #05

video upload by Stefan Tretau

"The pattern is a bit too static, but well... enough for just a minute ;-)"

ST Modular - pae (CV Pan & Fade fading two Cyllene VCOs)

Published on Feb 7, 2019 Stefan Tretau

See the ST Modular label below for more.