the qyooo
Polyphonic Synthesizer
Version 1.1
© 2016-2018 by Björn Arlt @ Full Bucket Music
http s ://www.fullbucket.de/music
Additional Presets by Krezie Sounds
http://www.kreziesounds.com/
VST is a trademark of Steinberg Media Technologies GmbH
Windows is a registered trademark of Microsoft Corporation
The Audio Units logo is a trademark of Apple Computer, Inc.
the qyooo Manual Page 2
Table of Contents
Introduction....................................................3
Architecture....................................................3
Filter Bank......................................................4
Scene Morphing...............................................5
Scene Editing..................................................6
Scene Menus..................................................7
Parameter Context Menu..................................7
Chorus...........................................................7
Modulation Sources..........................................8
LFO and Envelopes..........................................8
Performance Controls.......................................9
Program Menu.................................................9
Options Menu..................................................9
MIDI Learn...................................................10
The qyooo.ini Configuration File.......................11
Skinning Support...........................................11
MIDI Control Change Messages........................11
Parameters...................................................12
Global..........................................................12
Oscillator 1...................................................12
Oscillator 2...................................................12
Oscillator 3...................................................12
Noise...........................................................13
Filter Bank....................................................13
Scene Morphing.............................................13
Scene A........................................................14
Scene B........................................................14
Scene C........................................................14
Scene D.......................................................14
LFO 1...........................................................14
LFO 2...........................................................14
LFO 3...........................................................15
LFO 4...........................................................15
Envelope 1....................................................15
Envelope 2....................................................15
Envelope 3....................................................15
Envelope 4....................................................15
Chorus.........................................................15
Frequently Asked Questions.............................16
the qyooo Manual Page 3
Introduction
The qyooo (pronounced “the Q”) is a software synthesizer plug-in for Microsoft
Windows (VST) and Apple macOS (VST/AU). It is written in native C++ code for high
performance and low CPU consumption. The main features are:
● Three zero-delay feedback filters with different modes and arrangements
● Complex Scene Morphing section for filter modulation
● Three band-limited oscillators including Ring modulation
● Additional White Noise generator
● Four LFOs and envelopes
● Up to 64 voices polyphony including Portamento
● Chorus effect
● MIDI Learn ‒ all parameters can be controlled by MIDI CC
● Double precision audio processing
● Plug-in supports Windows and macOS (32 bit and 64 bit)
The great 25 presets from #26 (Iron Sky) to #50 (Woodophone) are created by
Krezie Sounds – big thanks!!! Please visit http://www.kreziesounds.com/ !
Architecture
Each voice of the qyooo features three oscillators and one White Noise generator
feeding a bank of three filters (see next section). Alternatively, the signal of an
oscillator can be replaced by the Ring-modulated version of itself with another
oscillator (Osc. 1 + Osc. 2, Osc. 2 + Osc. 3, or Osc.3 +Osc. 1).
Each oscillator generates five different waveforms: Sawtooth, Pulse (including Pulse
Width Modulation), Sine, Triangle, and Prime (a waveform containing only prime
number fundamentals i.e. 1, 2, 3, 5, 7, 11, 13, 17,…).
Finally, four LFOs and four envelopes are available for modulation purposes.
OSC 1
OSC 2
OSC 3
x
x
x
Filter
Bank
Noise
LFO
1‒4
Env
1‒4
Output
the qyooo Manual Page 4
Filter Bank
The heart of the qyooo is the Filter Bank consisting of three individual filters. Each
filter mode can be set to Lowpass, Lowpass-x (a distorted version as known from the
Kern plug-in), Bandpass, Highpass, Allpass, or Bypass. All filters have 4 poles except
for the Lowpass-x which has 2 poles and Bypass which has of course no pole at all.
The filters can be arranged in eight different ways:
Parallel 1 Parallel 2
Semi-Parallel 1 Semi-Parallel 2
Semi-Parallel 3 Semi-Parallel 4
Semi-Parallel 5 Serial
The filters are based on a (attention: buzz word!) Zero-Delay Feedback design and of
course do provide resonance control. However, this is not the end of the story since
the important part is the Scene Morphing used to control filter modulation… read on!
the qyooo Manual Page 5
Scene Morphing
The parameters of the three filters (Cutoff, Resonance, Volume, and Panorama) are
organized in four scenes: A, B, C, and D. Filter modulation is provided by morphing
between these scenes. This means that you can continuously move from one setting
for all filters (a scene) to a totally different one (another scene) ‒ in two dimensions!
In each direction (horizontal and vertical), three different modulation sources are
available for Scene Morphing. Combined with the many filter modes and
arrangements, this results in a huge variety of possibilities starting from simple
frequency or resonance (!) modulation to panorama control and format morphing.
To visualize the effect of the morphing, the qyooo features a small monitor with a
green “blip” displaying the current morph state of the voice that was triggered last
(you can also drag this “blip” to manually morph between scenes).
Scene
A
Scene
B
Scene
C
Scene
D
vertical
morphing
horizontal
morphing
the qyooo Manual Page 6
Scene Editing
It can get quite tedious to edit all the filter parameters of the four scenes. The main
panel of the qyooo organizes the scenes in tabs showing only one scene at a time.
However, you can always >CLICK FOR DETAILS< which opens a modal dialog where
you can edit all four scenes at the same time.
Furthermore, there are some utility and context menus for copying parameters or
whole scenes to other filters/scenes.
Loading...