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

Published on Feb 7, 2019 Stefan Tretau

See the ST Modular label below for more.

ST Modular - MIA 2x2 Channel Mixer

Published on Feb 6, 2020 Stefan Tretau

via http://www.st-modular.com/mia.htm

Details:
•2x2 Channel Mixer
•Volume Control for each Channel
•2 Channel Fader
•Fader Volume
•Wrong polarity protection
•Skiff friendly
•3U Eurorack module, 5 HP wide
•Power consumption: 35 mA at +12 V and 25 mA at -12 VThe module consists of two boards:
•Front PCB Panel
•Main PCB

MIA 5HP 2x2 Channel Mixer with Fader MIA is a fairly simple, but very handy 2x2 channel mixer with an optional fader output. CH1 & CH2 have two input jacks with VOLUME control potentiometers each. The signals inserted here will be mixed and supplied at the CH1 & CH2 outputs. Simultaneously the signal will be routed to the FADER. The summed signal of channel CH1 & CH2 will be available at the FADE output. Using the Fade potentiometer you may mix the two channels to taste. The overall FADE volume may be adjusted using the FADE VOL potentiometer. If there is a cable plugged into the IN A or IN B jack, the connection of the mixer channels to the FADER is interrupted. Thus you can mix 4 sound sources and fade two additional signals at the same time. Originally this mixer was designed to mix several VCO waveforms with the ability to route each of the mixed signal (from CH1 OUT & CH2 OUT) to external modules, such as effects and filters, and then again mix the externally proccessed signals (using IN A & IN B) to one single output (FADE out) via the fade circuitry. In some cases it might even serve as a stereo mixer.

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ST Modular - EFI (4HP Analog Filter)

Published on May 4, 2019 Stefan Tretau

"Dual-Mode Analog Filter

EFI is an analog multi-mode filter that is loosely based on the KORG MS-20 filter, but has been improved to fit into a 4 HP module.

It has a Low Pass and High Pass Mode which you may choose via Switch on the front panel. Additionally there are two CV inputs with an attenuator each.

Resonance can self-oscillate and there is a third mode that you may choose via jumper on the back. In this mode Resonance will be overdiven very quickly in Low Pass Mode and you will get some nice liquid sounding overtones.

This module is very easy to build and only needs 24 different components that are quite easy to source.

Details:
• Analog Dual-Mode-Filter
• Filter Modes: LP, HP (+ LP Overdrive via Jumper)
• Resonance Control
• Two CV Inputs
• Two CV Attenuators
• Wrong Polarity Protection
• 3U Eurorack module, 4 HP wide

The module consists of two boards:

• Front PCB Panel
• Main PCB

http://www.st-modular.com

26 mA +12V
24 mA -12V
0 mA 5V
25 mm deep
Module is available as a DIY project only."

ST Modular Introduces CV EXPERT (Dual Polarizer, Offset & Gain + LFO, 4HP)

video upload by Stefan Tretau

"Sound examples are not supposed to be musical, but merely represent the voltage changes audiovisually.

For more information, please visit st-modular.de.

00:00 Intro
00:05 Features
00:56 Polarizer, Offset, Gain
02:06 LFO Rate
02:36 Voltage Monitor"

CV EXPERT is a very compact yet powerful CV tool that is equipped with all the important functions you need to customise your control voltages. With its internal LFO, it is immediately ready for use without further patching.

CV Expert (Cve) is a versatile dual-channel tool for customizing control voltages.

Its internal LFO is normalised to both inputs and allows you to choose between a triangle or square wave via a jumper on the back. The LFO connection is automatically interrupted when an external CV is inserted. Adjust the LFO rate with the LFO RATE potentiometer.

The signal received at the DC-coupled inputs IN ① and IN ② passes through three CV tools:

Polarizer
The PLRZR potentiometer enables voltage attenuation and inversion.
At the midpoint, the signal is eliminated.
Turning to the right allows the original voltage to pass through (as with an attenuator).
Turning to the left inverts the signal, e.g. positive signals are converted into negative signals.

Offset
Adds or subtracts voltage from/to the passing signal.
OFFSET control determines the offset range.
In the center position, there is no voltage offset. Turning the control to the right shifts the voltage to the positive range, while turning it to the left shifts it to the negative range.

Gain
Amplifies the signal with a maximum gain of 2 at the GAIN control's maximum position, effectively doubling the applied voltage (e.g., +1V becomes +2V, +3V becomes +6V, or +4V becomes +8V).
The voltage is capped at a maximum of +/-10V.

ST Modular - KLANGMASCHINE (Dual Digital FM Synthesizer)

video upload by Stefan Tretau

via ST Modular

KLANGMASCHINE is a powerful tool for creating a wide range of sounds, from simple sine waves to complex and evolving textures. It combines two simple frequency modulated synthesizers to create a very powerful and versatile digital sound source.

key features
2 Voice FM Synthesizer plus Noise Generator
CV over all FM Parameters
Tone Control
Internal VCA
Internal Mixer
Individual Outputs
Wrong Polarity Protection ​

width: 16 HP
depth: 28 mm
power: 98 mA @ +12V / 56 mA @ -12V

ST Modular - Duck

video by Stefan Tretau

Other Modules used:

Boba Fat (Kick, Subbass)
Pyxis (VCO)
HH (Hihats, Shaker)
Phoebe (Mixer)

0:00​ Take 1
3:26​ Take 2
4:24​ Take 3
4:57​ Take 4

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Just a Minute - MOOG SUBHARMONICON

Published on May 30, 2020 Stefan Tretau

"This is one my first patches with the Subharmonicon.

External Modules:

EFX - Make Noise Mimeophon
Manual Sequencing - ST Modular PUSH
LFO - ST Modular TRYFELO"

ST Modular - CV BENCH (CV PAL Clone / USB Midi to CV Interface)

video by Stefan Tretau

"Here I´m using CV Bench to control Mutable Instruments Rings and ST Modular GIVEII OSC from Ableton. I added a drum loop as timing reference....after all it ended in a little techno jam ;-)

0:00​ Take 1
2:18​ Take 2
3:33​ Take 3
4:43​ Take 4"

ST Modular - NATURAL STATE (Dual Ducking Enveloped Filter)

video upload by Stefan Tretau

00:00 CV Decay and Internal CTRL LFO
00:57 Right Channel Ducking #1
01:21 Force, Open, Peak & Decay
02:25 Right Channel Ducking #2
03:22 Internal LFO

via ST Modular

NATURAL STATE

16HP Dual Enveloped Ducking Filter Natural State consists of two 24b filters with a CV decay envelope and an internal LFO. It is designed to filter two waveforms in the most

ear-friendly way possible to create natural and organic sounding grooves and soundscapes. Each of the two channels has a DECAY slider that adjusts the decay length, an OPEN slider that adjusts the filter cutoff, and a FORCE slider

that adjusts the amount of decay CV that affects the filter. The STRIKE input takes any CV from + 1 volt and triggers the decay envelope. Both the decay and the filter cutoff can be controlled via the CV inputs DECAY and CTRL. Attenuators can be used to change the strength

of the applied CV. The decay attenuator also acts as a DECAY CV offset. A subtle internal LFO can be routed to the filter cutoff, which is attenuated with the CTRL controls. The LFO range is rather slow to create

smooth filter sweeps.

The resonance of the individual filters can be changed with the PEAK potentiometers. When the DUCK control is turned to the right, the decay of the left channel increasingly suppresses the signal of the right channel, creating

a ducking effect.

Both decay envelopes are also routed to the ENV sockets for further external processing.

ST Modular - CV PAN (Stereo Panning Module)

video upload by Stefan Tretau

"The sound examples are not meant to be musical compositions, but rather provide a quick overview of the module's capabilities.

Further information on this module can be found at www.st-modular.de.

00:00 Intro
00:12 Features
01:20 CV Pan
02:08 Manual Control
02:20 LED Indication
02:49 OSC Waveform"

ST Modular - Stereo Total

video by Stefan Tretau

via ST Modular

Details:•Mono to Stereo Converter•Stereo Width Controller•Stereo Imager•Buffered Input Multiple•Two Separate Stereo Processing Blocks•Wrong polarity protection•3U Eurorack module, 4 HP wide•Power consumption: 15 mA at +12 V and 10 mA at -12V The module consists of two boards:•Front PCB Panel•Main PCB

ST Modular - CONTROLLER (Four Channel CV Controller)

video upload by Stefan Tretau

"The sound examples are not meant to be musical compositions, but rather provide a rapid overview of the module's control capabilities.

Further information on this module can be found at www.st-modular.de.

00:00 Intro
00:24 Features
01:35 Controlling Singer
03:39 Controlling Ghost 1
05:23 Controlling Ghost 2"



"The CONTROLLER module is a versatile four-channel CV control unit designed for precise management of up to four external CV parameters. Serving as a centralized control hub, it eliminates the need to individually access each control destination, streamlining the control process and enhancing workflow efficiency.

Four slider potentiometers are provided, each offering a travel length of 45mm. These sliders enable the application of unipolar voltages ranging from +0V to either +5V or +10V, which can be selected via a jumper located on the module's rear. Adjusting the slider upwards increases the voltage applied to its respective OUT socket, with the slider LED indicating the voltage level.

In addition to the sliders, each channel features a STRIKE button, allowing for the immediate application of a predetermined voltage on top of the voltage set by the slider. The maximum additional voltage that can be applied via the strike button is adjustable using the S MAX controls, ensuring seamless customization. This feature enables users to effortlessly set the desired voltage level to be activated with a simple button press.

The Controller utility is a convenient tool specifically crafted to manage multiple parameters of various modules, enhancing their accessibility during live performances.

key features
Four Channels with CV Output
Slide Potentiometers with LEDs
Strike-Buttons for immediate CV Changes
Control over max. Strike-Voltage
+5V or +10V max. Voltage Output
Skiff friendly
Wrong polarity protection
​
specs & downloads
width: 12 HP
depth: 30 mm
power: 45 mA @ +12V / 35 mA @ -12V

ST Modular - SUM MIX & PAN (Mix, Pan, Scan, VCA)

video upload by Stefan Tretau

"BEST TO LISTEN WITH HEADPHONES!

00:00 All at once!
00:18 Channel per Channel VCA and PAN
02:05 SCAN & SPAN #1
02:54 SCAN & SPAN CV
03:29 VCA & SCAN
04:58 SCAN & SPAN #2"

SUM MIX & PAN

18HP 4-Channel Mixer with VCA, CV PAN and CV SCAN

MIX & PAN completes the ST Modular SUM mixer series with a fully CV-controlled 4-channel mixer. It features

CV PAN, VCA per channel and a CV CHANNEL SCANNER. Each channel has a VOLUME SLIDER and a VOL CV input to control the internal VCA. The panning per channel can be adjusted with the PAN controls or the PAN CV inputs. LEDs indicate the channel volume and the state

of the panning.

All channels are summed and can be tapped at the main output jack. The SCAN and SPAN functions are really the most outstanding features of the module. They provide a unique

way to mix 1 to 4 channels using one or two CV signals applied to the SCAN and/or SPAN CV inputs. The scan functionality allows you to output a selection of channels by turning the SCAN knob or applying CV to the SCAN input. The range of channels that are activated is set manually or by CV using the SPAN knob. This not only narrows down the active channels from all to just one, but also reduces the effect the SCAN CV has

on the VCAs, as if you were shortening their decay time. When both SCAN and PAN are in the centre position and you turn SCAN, you activate one of the four channels at a time. If vou increase SPAN, more of the adiacent channels become audible until all channels have reached maximum volume (from mid to cw position). If vou decrease SPAN again, onlv one scanned channel will be

audible (mid position) and it will then start to fade out shorter (turning from mid to cc position). If a CV signal is present at the SCAN CV input and you turn SCAN to the left, the activated channels are narrowed to the left. Converselv, if vou turn the knob to the right, onlv channels 3 and 4 are activated, and in

the rightmost position, only channel 4. This module is great for creating ever-changing and organic soundscapes throughout the complete stereo

field, making your composition a very varied and a persistently interesting listening experience.

ST Modular - HANS (Analog Stereo Low-Pass Filter)

video upload by Stefan Tretau

"The sound examples are not meant to be musical compositions, but rather provide a quick overview of the module's capabilities.

Further information on this module can be found at www.st-modular.de.

00:00 Intro
00:26 Features
01:45 Open & Close
03:18 Internal LFO
04:20 External CV & Internal LFO
04:45 Only External CV
04:59 Organic Movements"

HANS is a compact 4-pole low-pass stereo diode-ladder filter with an internal LFO. Inspired by the famous diode ladder filters found in EMS and Roland TB-303 devices, this filter delivers a distinct and unique sonic character. The module also features an internal LFO for dynamic movement of the cutoff frequency.

key features
Diode-Ladder Filter
4-Pole Low-Pass Design
Stereo Inputs and Outputs
Cutoff CV Control with Attenuator
Internal Triangle LFO with Level Control
LFO Output
Only 6 HP wide
Skiff friendly
Wrong polarity protection
​
specs & downloads
width: 6 HP
depth: 30 mm
power: 35 mA @ +12V / 29 mA @ -12V

ST Modular - ST System

Published on Dec 10, 2018 Stefan Tretau

Just a Minute - Modular Melody #1

Published on Dec 20, 2019 Stefan Tretau

Stefan Tretau of ST Modular

ST Modular - KRAKONG (Duophonic Semi-Modular Sonic Voyager)

video uploads by Stefan Tretau

"KRAKONG is a duophonic generative synthesizer with a sequencer per voice, FM crossover modulation, an additional random modulation sequencer, one multimode filter with VCA, a buffered multiple and a resettable LFO. The design includes a collection of manual controls and connections for patching and CV control.

Each of the unit's two voices consists of a triangle and a square wave oscillator, a shift register sequencer, a decay envelope generator and a filter-based gate. In addition to the two synthesizer voices, which can be manually distributed in the stereo field, a third ring-modulated output of the two voices can be mixed to the main output. The tempo of all sequencers is determined by a clock generator, which can be controlled internally or synchronised externally to any voltage (audio and CV).

This musical instrument has a complete structure that allows for a wide range of sonic possibilities, from rhythmic drum patterns and tamed sonic chaos to textural and rough synth-sounds. The essence of this unit lies in the exploration of the interplay between the elements of the synthesiser, using the three sequencers and filters, manual controls and modulation patch points."

ST Modular - 1U Toolbox

Published on Apr 19, 2020 Stefan Tretau

ST Modular - STEREO COMPRESSOR with Boba Fat, HH, Pyxis and Phoebe

Stefan Tretau

„Stereo Compressor“ is a classic analog feedforward compressor, which takes its sidechain split directly from the input signal. It is based on the THAT4305 Analog Engine® single-chip with integrated Blackmer® VCA. It has two independent signal paths in order to process stereo signals. The left input is normalized to the right, if you want to compress mono signals instead. The module has three controls and a switch:

THRESHOLD determins the level at which the compressor starts working. This can be set from -40dB to 20dB.
RATIO sets how much the compressor turns down the volume when the threshold is reached (INF:1 to 1:1).
GAIN regulates the amount of make-up gain (-20dB to +20dB) that is applied to the signal.
Additionally there is an ON/OFF switch that makes it easy to compare the dry and compressed audio signal.

Please note that if you turn THRESHOLD counter-clock wise to the left, you reduce the threshold from 20dB (fully cw) to -40dB (fully ccw). Hence the compressor starts working earlier. If you turn RATIO counter-clock wise to the left you increase the amount of compression from 1:1 (fully cw, no compression) to INF:1 (fully ccw, infinite compression). So turning the knobs down corresponds to compressing the signal. The pictures below show the knobs in a neutral position where no compression is applied.

STEREO COMPRESSOR has a similar design as the STEREO SUM CHANNEL modules. If you want to add some compression to your mix STEREO COMPRESSOR is a perfect addition to your STEREO SUM Mixer.