This is a simple analog VCO. Its “thing” is that the triangle output gets AC coupled back into the triangle core, thus self-frequency-modulating itself. New harmonic content results as the shape of the core becomes less definable. Since everything derives form the triangle core, all the wave outputs get distorted. The videos below demonstrate this.
Furthermore, the self mod control is sensitive to speed of knob rotation. If swept slowly there is no notable change in pitch. If swept not-slowly, the movement of that control will result is a momentary pitch swing. This can be “played” for effect and adds bellow or fluctuation to the pitch. If self-mod starts to near its maximum position, the VCO will go slightly flat. This can be noticed near the end of the sine video.
About the sine output. It’s nowhere near a perfect sine, but it’s pretty sine-ish. It is also inverted relative to the phase of the triangle and square outputs. If the sine is mixed with the other waveshapes (through external patching) this serves to cancel out the fundametal frequency in the other waveshapes, and only the harmonics are left. This has a highpass filtering effect and can make useful tones.
The frequency knob controls a useful audio range of about 10 – 10,000Hz. Through the use of CV that can be pushed to sub and supersonic levels. The circuit is not useful as an LFO, no voltage will result if the VCO is slowed (through high negative CV) to less than about 1Hz.
The circuit is well compensated against temperature related pitch drift, and has good 1V/oct tracking. Fine tracking adjustment can be done from the front panel via small flathead jewlers/glasses screwdriver. If overtracking turn left, if undertracking turn right. A blue trimpot on the circuit side of the module adjusts the initial frequency set.
Rosie is an output interfacing module with the added functionalities of FX Loop, Crossfader and Auto-Cue system. It is designed to facilitate live performance on the modular synthesizer by allowing the artist to preview and modify portions of a patch using the Auto-CUE system, while the audience is listening to a different portion of the patch as selected by the crossfader. Additionally it allows for Stereo processing of all sounds via the FX Loop. The Rosie is suitable for headphone monitoring of the modular system and interfacing the modular system to a recording environment. Internal Level Matching and Limiting w/ overload indication makes it easy to connect the modular system in the studio or on stage.
The 0-COAST is a single voice patchable synthesizer. Its name reflects the fact that it utilizes techniques from both the Moog and Buchla paradigms (aka “East Coast,” and “West Coast,” due to their locations), but is loyal to neither and thus implements “no coast synthesis.”
While the 0-COAST utilizes classic modular synthesis techniques, we designed it to operate with or without the use of patch cables. The necessary connections have been made from circuit to circuit so it operates as an expressive, musical MonoSynth. Using only the MIDI controller of your choice you could apply new timbres to your existing musical forms!
Using the included Patch Cables you could get more scientific, experimenting with new ways to wire up the circuits. You might even forgo MIDI altogether, disappearing into a cloud of analog FM induced Sidebands and harmonics scattered around a single fundamental drone that has nothing to do with any form of music you’ve ever known.
So I decided while I am in the process of building my eurorack and kinda rushing to get sound out of it without really knowing what i'm doing it would be nice to have something to mess around and learn from.
I had a bit of a hard time locating a unit most place I usually order from were out of stock and well i'm not patient lol, finally found one in at savedbytechnology.com in Toronto and they shipped it super fast ! Friday order got it monday morning :p
I've been playing with it for a week now and love it, I am not really sure what I am doing most of the time, at least I know what are the input / output, I am having a hard time with the program pages and how to use them properly,
The patch cables supplied with the unit are enough to do most of the demo patch, I ordered 20 extra ones from technosynth.com :) super good service.
I am planning to film video of me messing around with the 0-Coast and share on youtube in the coming days. Also I printed tons of page 43 from the manual to share patches, i'll be including them here in pdf form.
Hey... been a while since I wrote a blog post, kinda missing that, I've been working with artist in the music industry for a while, did my little podcast on dirtyradio and over the years i've been buying random piece of equipment without much of a purpose.
Last year I started to buy equipment to just enjoy listening to music properly and record my podcast and while doing that I expanded a bit...
I quite enjoy my little setup at the moment, i'm learning every bits of toy one by one slowly, most of my attention at the moment is toward the Volca sample which I play with almost everyday and building library of samples to use with it.
Wish list for 2017/2018
Arturia Beatstep pro (black)
Arturia MiniBrute Analog Synthesizer (red or SE wood)
Direction ? what direction... i'll be honest here i'm pretty much trying to trick my brain into buying anything other than rum so that's my direction and focus.
I've been massively hypnotized into the modular world, I have never touched or seen one in person but I know i want to have one in my life ;) some people want a child... I found my child robot ! yay!
I like to draw and well there's no preset no nothing I just draw on my blank page... and well with synths and presets I feel like i'm not being myself I need more control I need to start from scratch and the modular world seems to be what i'm looking for. I don't mind putting the time to learn and all.
I've started to build my case for my first tiny modular which will be 84hp / 3u with tip top rails and ears / hub... getting the "Tiptop Audio Happy Ending Kit - Black" I learned a lot from youtube videos... learned that I need a lot of stuff to properly bend wood like i'd like it to bend... anyway ;)
First case is almost done, awaiting my kit and hope it will actually fit in my enclosure... then it's going to be module hunt... I expect the rack to be empty for a while, I don't think I have the skill to etsy that stuff yet...