Introducing a new space saving VCO!
"Digital Character, but with Analog finesse"
"Big Sound from such a Small Module!"
The key to such a small module having the ability to achieve so much is multifunctionality.
|●||The T/G input can be used with gate type pulses to control the envelope / sustain time, but can be used with a short trigger to play entire envelope.|
|●||Sensitivity is 0.6 volts on the T/G input so can be triggered by unlikely sources such as a piezo transducer|
|●||The MOD input can be used to phase modulate waveforms, PWM others, or both to some combination waveforms. This is a bipolar through-zero input.|
|●||The MOD CV input can be used with it's own coarse Quantizer to offset Scales.|
|●||The MOD CV input can be used to select any of the 16 waveforms.|
|●||The MOD CV input can offset the Attack up to 25%|
|●||The MOD CV input can offset the Decay and wrap around|
|●||All MOD CV connections can be used in any combination|
|●||The WAV knob acts as an offset when selecting waveforms, so if used to offset Scales can be shifted into a whole new sequence without affecting Scale keys.|
|●||During alternate MOD functions, a modulated waveform can continue thanks to Intelligent Modulation Capture, looping up to last 3 seconds.|
|●||The 3 top waveforms can be custom drawn using 2 of the knobs as the X-Y axis. Saved in permanent memory.|
|●||Custom waveform # 15 can be recorded into from an audio source patched to MOD input with instant preview to get that perfect waveform|
|●||Settable 0V key offset of 12 notes for Quantizer / Scales / non-Quantizer modes.|
|●||+1 Octave Setting reduces wave table size from 128 to 64 for clear sounding higher pitches|
|●||2 KHz @ 10bit sample rate on the MOD & VCO CV inputs for smooth analog like modulation response|
|●||No Digital Envelope. Real analog VCA circuit.|
|●||All settings "menus" are only 1 deep, indicated by the LED's|
|●||Set it and forget it. All settings / waveforms are permanently retained for future power-ups, ready to go.|
|●||Audio (mp3) File Firmware updates, alternate Firmware's Percussion, PureMIDI, Delay/FX/Distortion transform your SDS_VCO|
Assembled and tested $130 US
Complete DIY Kit (SMD's already mounted) $ 95
MIDI Expansion Board (including patch to in-line or panel jack) +$20
Available Now! email@example.com
|SDS_VCO Demo 1
This video describes some of the basic input/outputs and
configurations of the SDS_VCO
|SDS_VCO Demo 2
Demo video 2 covers the new MOD controlled envelope Attack & Decay offsets, Root 0 volts offset setting, the MOD CV recorder, and MIDI output option.
The new Waveform # 9 and Master reset are also covered.
An experimental patch with the prototype SDS_VCO. The VCO is turned into stereo and reversed by sequencer control from the MI Frames which is being clocked by an output from the ModEm-1 Sequencer.
Waveforms are also being selected by the MOD input and can be offset independent of the scale root pitch. The scale is "All notes" quantized.
Another demo video is coming "oddities" ;)
Here's a few samples of the SDS_VCO during &
MP3 LINKS WILL OPEN IN A NEW WINDOW, THIS IS INTENDED.
Sequencing the VCO CV and using MOD input to shift the root of the scales selected. Tweaking the envelope throughout the three pieces.
The delay is a Reflex LiveLoop to match the sequencer tempo.
This demonstrates the MOD memory feature. Modulation was recorded continually up to the last 3 seconds before the MOD input switched to control the root scale offset.
The recorded modulation is then removed at 2:48, and re-enabled at 11:00.
Various waveforms are selected also by the MOD CV to demonstrate the diverse array of sounds from the waveforms.
The delay is a Reflex LiveLoop
Development tests trying out different waveforms, noise, modulations and envelopes.
(3rd part of 3 wonders) Starting out with string-like envelope using a slow MOD that was recorded.
MOD recorded is saved to memory and remains indefinitely while MOD input is being used for other functions:
Waveform selection, Scale Root offset, or an envelope parameter CV. Turning off the MOD record mode will preserve a previously recorded MOD input.
With the new MIDI
expansion (option added just in time for release!) CV & trigger/gate
combinations will be duplicated note for note into a MIDI send. This is very
complimentary and enhances GM MIDI sounds nicely.
'Nuff said, have a listen!
sample demonstrates selection of MOD input to control Attack and/or Decay
offsets. The Attack offset is usefully small, while the Decay can wrap right
around at 5 V making it feasible to use the two together.
sample is using the same setup but Wave#12 where the recorded modulation is
more noticeable because of the phasing of triangles and light harmonic.
Here's a whole
lot of different modulations (sine, square, adsr drops, audio) and sequences
using the SDS_VCO alone (with a bit of kick drum here & there) during an
This sample demonstrates principally the analog nature of the SDS_VCO. It's not all pretty with some of the modulations, but frequencies were stressful and yielded some pretty nifty results!
2 x SDS_VCOs-protoNew.mp3
first prototype SDS_VCO mixes waves with the first production module which
also has MIDI in this sample.
Throughout this sample, I am changing waveforms in both modules, one feeding left, the other right, and MIDI all over, also being channel changed on the fly some. The sequence on the other hand doesn't change, just the scale offsets.
This (rather long)
sample is an interesting experiment using one SDS_VCO on a sequencer with a
gapped gate, while a second on just an LFO with every sequencer clock.
PercussWithFLstudio.mp3: Percussion Firmware
Here's the SDS_VCO with percussion Firmware installed synced via clock from a MIDI-CV and FL STudio. Combined with software drums adds some pizzazz to an ordinary kit! SDS_VCO's with the MIDI option will also out MIDI to ather drums (like V-Drums or software) at the same time. Drums defined by the 16 parameters have an approximate "sister" in the MIDI world.
The SDS_VCO firmware underwent a bit of an overhaul recently (March 2018) so it generally sounds better and performs more accurately. Also some modules were experiencing issues with the higher notes, which is fixed.
Here's a sample (WAV#16) of the "new" SDS_VCO!
Here's an SDS_VCO module being controlled by a pair of RIT_M sequencer/CV recorders while in Trigger mode. The VCO's CV in is being controlled by one RIT_M, while the other RIT_M is selecting waves and controllinga second SDS_VCO with the FX Firmware installed. The first VCO is of course being fed into the second!
2017 DIY Build Manual DIY MIDI Sheet
SDS_VCO Calibration Procedure
BareBoard DIY Build Manual
Percussion V.1.00 Guide
PureMIDI Beta Guide
Firmware /Alternate Firmware's
Audio Firmware Updates
SDS_VCO Firmware Page
Turn your SDS_VCO into a percussion module!
16 tunable parameter percussion sounds
NEW! PureMIDI beta Firmware
Turn your SDS_VCO into an 8 Channel
T/G & CV & knobs to MIDI Controller!
NEW! Delay/FX/Distortion Firmware Dev
This firmware underway (March 2018) turns the
SDS_VCO into an amazing little audio processor!
I have dedicated a page to it here
SDS_VCO Q & A
Web Design by Yours Truly! I know it
looks like something out of the 90's when a 1 Mb webpage was unacceptably large.
We strive to separate ourselves from energy consuming bandwidth-heavy script and other wasteful environmental unfriendliness
toward this beautiful blue pearl in space we all call home. I urge you to do the same please. It feels good!
Last Update March 24th 2018