Osi-Op : Using Through Zero FM Synthesis and VCA : Vaemi (Eurorack)
"Osi-OP, which we regard as an analog reflection of the new era of digital electronic music, is an analog and voltage-controlled oscillator module. It was designed in Eurorack format and it has a width of 14hp. The fact that it has Thru Zero FM Input and a Waveshape Output, which can be used for morphing, are two of the most important features of this product. From a first impression, it may look like an oscillator that is appropriate for subtractive synthesis; however, we actually designed it to be used for additive synthesis. Thanks to Thru Zero FM, this oscillator can regard oscillators with Sine Wave as analog operators. You can even prepare your synthesizer patch without using the classic subtractive resonant filter. The most important aspect of Thru Zero FM is that there is no tune drift when you increase the modulation rate. For this reason, Thru Zero attenuator (TZ FM potentiometer) can almost be used like a filter itself. the frequency of the second oscillator acting as FM (operator) according to the frequency of the 1st oscillator giving the fundamental frequency; must be set in harmonic degrees of the fundamental frequency. But at these settings the tonality can remain in and be musical. In addition to Square, Saw, Triangle, and Square Sub oscillator outputs, it has a Sine Wave Output, which was designed with JFET transistors and has a very low distortion rate, and a Waveshape Output, which was designed with Sine-Triangle and can be used for morphing. It also has a Wave Shape Input. It is connected to this input via the Triangle Wave circuit board inside. Sine Wave is fixed on Wave Shape but you can forward it to the other WS Input by patching other waveforms, and you can morph between two waveforms. The pulse width of the Square Wave can be adjusted. The same knob is the morphing knob of the Waveshape Output. Since the oscillator has tempco, there is a 1V/OCT calibrated CV Input that is sensitive to heat. It can perfectly stay in tune up to 3.5 octaves. In addition, for FM, there are two separate CV Inputs, Exponential and Thru Zero. While Exponential FM CV Input can take all types of DC and AC voltages, Thru Zero FM CV Input can only be used for AC audio rate signals. Also, when you enter a waveform on Thru Zero FM CV Input, oscillators are soft-synced automatically. With 1V/OCT CV Input, you can adjust the frequency of the oscillator; and with Exponential FM CV Input, you can easily add an LFO or Envelope Generator. Square Wave Sub OSC Output, which is completely synced with fundamental frequency and can give an octave lower than the fundamental, will help you a lot to create strong modern synth-bass sounds. It is made with NOS IC. When the oscillator is FM modulated, the Sub OSC never gets negatively affected by this modulation; and it can maintain giving the frequency clearly. You can also switch the oscillator to the LFO mode. You can create subtractive syntheses by using two or more of these oscillators or by mixing these waveforms. The main reason for us to design this oscillator is, as its name shows, to enable the creation of complex FM patches and sounds by using 2-3 or more of these oscillators, just like Operator FM. While Thru Zero FM increases the modulation, it can maintain giving the same frequency without losing the adjusted frequency; and you can add harmonics to the sound musically. The module has 5 knob controls, 4 CV Inputs, an input for Waveshaper, and 6 ±5V waveform outputs. Osi-OP, which is handmade and produced with the help of Through Hole technology, is a product consisting of electronic components that is carefully tested."
"An Analog Modular Guitar Synthesizer patch using nine oscillators, integrating the electric guitar into the modular synth world. Four oscillators are in octaves, the five remaining VCO/PCO create a chord running in parallel. If my Arduino Clock Divider and Logic thing still has sufficient memory space available, I will try to implement a harmonizer algorithm to improvise some basic non parallel chord-melody progressions, would be nice... I forgot to hook up two more ADSR/VCA pairs, that's why some note releases are a bit weird."
monolith is a pitch-shifter reverb inspired by west coast synthesis techniques. It utilizes a time-domain based FM algorithm that acts as a shimmer.
Inputs:
in l and in r - audio input, left will be converted to stereo if there is no right input
blend - knob and CV for controlling the fade between the dry and fm audio signals
dj filter - knob and CV for controlling the reverb delay line filtering
wet - knob and CV for controlling the reverb decay
mod - knob and CV for controlling the scale of FM modulation. low mod values correspond with microtonal pitch regions. high mod values correspond with multiple octave shifts.
on - button and CV gate for toggling on/off FM modulation. when FM modulation is turned on/off, the FM modulator oscillator is reset.
Coolest Patch I've Made and How to Make It // OB-X8 Taught Me How To Do This video upload by Ricky Tinez
"You need to have that Aha moment and then it'll be a breeze. Essentially, you're setting your oscillator up a fifth (7 semi-tones) and that's where your oscillator will always return to. From there, you can utilize your Mod Envelope to push it up exactly 1 octave! That way when you let go of the keyboard it falls from the musical octave, down to another musical note the fifth. Hope that makes sense! I love exploring synthesis and especially exploring OB-X8 Sounds now that i've had it. Sound design on the OB-X8 is straightforward but always in a sweet spot."
"A 'switched on' version of Bach's The Well Tempered Clavier book 1 - Prelude and Fugue in C minor, inspired by Wendy Carlos
Played on Dave Smith Prophet Rev2
Noisebug store in Pomona CA made a nice trade with me for some gear so I picked up a second Synthetic Soundlabs Tube VCA to do stereo patches with them, something I’ve wanted to try ever since I got the first one! The patch is pretty simple, just a MIDI keyboard into a Synthesis Technology MOTM-650 interface to create CV and gate voltages, a Noise Engineering Cursus Iteritas Magnus VCO's audio output mult’d into the two SSL Tube VCAs, the separate outputs of a single STG Soundlabs Envelope Generator in 'Pyramid Blaster' mode modulated the Tube VCAs, and three outputs of a Marienberg Devices Sine Phase VCO is modulating the Cursus VCO via a couple Synthesizers.com Q125 signal processors."
