Tag Archives: Semimodular

DELTA CEP A Stepsequencer Workshop Premiere on Youtube!

I am happy to announce the Youtube Premiere with Live Chat on Tuesday, September, 26th at 9pm EST (21:00 in Germany). If you have any questions during the premiere, you can contact me directly at the live chat! I will present the new step sequencer but will cover the sound design of typical sequencer-sounds as well. Looking forward to see you there!

Link to the Youtube Premiere

 

New DELTA CEP A workshop video spotted on youtube

Trade fairs are cancelled. Workshops are postponed. In times of the pandemic, product videos are a serious alternative. I had a video series on the DELTA CEP A in mind for a long time. The first part provides an overview, while the following parts deal intensively with the individual sections of the synthesizer. My personal highlight in this pilot episode is the use of the stereo tape delay of the FX section as a looping device for a spontaneous 5 minute improvisation. This version of the video is in German. An English version will surely follow if I receive demands for it. Anyway – the audio demos will not change at all in an english language version.

Small addendum to the production of the Delta CEP A video. In some audio examples, the audio encoder of the video output in Final Cut Pro was unsuitable. I had to filter waveforms and lower the level. But I still couldn’t get a few of the digital artifacts under control in a manageable amount of time. At least after a certain number of attempts, I was tired of filtering the waveforms more and more. It was poking in the dark. I knew the problems came from overtones that I couldn’t hear anymore, but my young listeners might. The Delta CEP A simply has extremely clear waveforms with overtones up to the Nyquist frequency. For this reason, here is a link to the uncompressed wave file with the audio samples that the encoder did not want to process properly. The unfiltered Swarm oscillator signals were particularly affected. In the analyzer of the Logic Pro X EQ you can very nicely observe how far the overtones in the DELTA CEP A range for rectangular, pulse and sawtooth waveforms.

      OriginalWave

Messen fallen aus. Auf Workshops wird verzichtet. In Zeiten der Pandemie sind Produkt-Videos eine ernstzunehmende Alternative. Eine Video-Reihe zum DELTA CEP A schwebte mir schon lang vor. Der erste Teil dient einer Übersicht, während sich die folgenden Teile intensiv mit den einzelnen Sektionen des Synthesizers auseinandersetzen. Mein persönliches Highlight ist die Nutzung des Stereo-Tape-Delays der FX-Sektion als Looping Device für eine spontane 5 minütige Improvisation. Diese Version des Videos ist in deutscher Sprache gehalten. Eine englische Version wird sicherlich folgen, wenn dieses Format Zuspruch findet.

Kleiner Nachtrag zur Produktion des Delta CEP A Videos. Bei manchen Audio-Beispielen zeigte sich der Audio-Encoder der Video-Ausgabe in Final Cut Pro ungeeignet. Ich musste Wellenformen filtern und den Pegel senken. Aber ein paar der digitalen Artefakte bekam ich trotzdem in überschaubarer Zeit nicht in den Griff. Zumindest hatte ich ab einer gewissen Anzahl von Versuchen keine Lust mehr, die Wellenformen mehr und mehr zu filtern. Es war ein Stochern im Ungewissen. Ich wusste, die Probleme kommen von Obertönen, die ich nicht zu hören vermag, meine jungen Zuhörer aber vielleicht schon. Der Delta CEP A hat einfach extrem klare Wellenformen mit Obertönen bis zur Nyquist Frequenz. Aus diesem Grund hier ein Link zu der nicht komprimierten Wave-Datei mit den Hörbeispielen, die der Encoder nicht vernünftig verarbeiten wollte. Betroffen waren vor allem die ungefilterten Swarm-Oszillator Schwingungen. Im Analyzer des Logic Pro X EQs kann man sehr schön beobachten, wie weit die Obertöne beim DELTA CEP A bei Rechteck, Puls- und Sägezahn-Schwingungsformen reichen.

      OriginalWave

Delta CEP A – Paraphonic semimodular synthesizer

NAMM 2018 News: Radikal Technologies presents the Delta Cep A – a semimodular paraphonic synthesizer voice

The Delta Cep A is the perfect starting point into the eurorack modular world. A MIDI to CV Interface, Oscillators, Filters, LFO, Envelope Generator, Mixer, VCA and a FX section and even a memory sequencer/interpolator for new incredible sound FXs. Each section has inputs and outputs and adds a lot of power to any already existing modular synth. The Delta CEP A can also be used totally independent from any Eurorack frame with our Delta CEP A desktop casing. Even without patching one single cable, the Delta can be used as a powerful solo synthesizer and Chords/Pads machine.

Interpolator
The Interpolator stores patch memories of the synthesizer and allows for automatic sequential recall and crossfading between these patches.

Controls:
-Interpolator/Patch Select knob

Buttons:
-Manual Mode/Shift
-Tempo
-Snap
-Mute
-Blend
-Memory

MIDI2CV
The MIDI to CV Interface controls the internal synthesizer and external synth modules.

Buttons
-MIDI Learn Button

Inputs
-MIDI

Outputs:
-Gate
-KB-CV
-CV
-Clock
-Clock Reset

LFO
Controls:
-Depth
-Speed

Buttons:
-Waveform Select

Control Voltage Inputs:
-Speed
-Depth
-Sync

Output:
-LFO Out

Swarm Oscillator
The swarm oscillator is a bank of up to 8 oscillators that can be tuned in chords, clusters or fat detuned multi-oscillator sounds.

Controls:
-Wave/TLM knob
-Pitch knob
-Detune knob
-Mod Depth/ Mod wheel depth
-Swarm density

Buttons:
-Paraphonic mode switch button

Control Voltage Inputs:
-FM
-TLM and Waveform Modulation
-1V/Oct Pitch Input

Outputs:
Swarm Oscillator Output

Mixer
The mixer controls the balance between external signals, the swarm oscillator and the noise generator.

Controls:
-External/Noise Level
-Oscillator Level

Control Voltage Inputs:
-External Input
-Modulation Input

Outputs:
-Noise
-Mix Output

Analog Multimode Filter & Digital Multimode Filter
The Delta has one analog and one digital multimode filter to choose from.

Controls:
-Cutoff
-Resonance
-Cutoff Mod/KB-Scale
-EG-depth/ Velocity

Buttons:
LP, BP and HP switches

Control Voltage Inputs:
-Cutoff
-Resonance
-Filtertype-Interpolation

Outputs:
-Filter Output

ADSR generator
The ADSR Generator creates fast, snappy envelopes and offers CV control over Attack and Decay times.

Controls:
-Attack
-Decay
-Sustain
-Release

Buttons
-Gate

Trigger Input

Control Voltage Inputs:
-Attack
-Decay

Outputs
Envelope Out

VCA

Controls:
-Level
-EG-Depth/Velocity

Button:
-EG/GATE

Control Voltage Inputs:
-Modulation
-FX In Left
-FX In Right

Outputs:
-Dry Out

FX Section
The FX section is the perfect addition to this synthesizer voice.

Controls:
-Time/Modulation Rate
-Feedback/Modulation Depth
-Dry:Wet/FX-Select

Outputs:
-Out L
-Out R

  • 200 mA +12V
  • 50 mA -12V
  • 0 mA 5V
  • 23 mm deep