Xen-Arts proudly presents:
Xen-Arts is very excited to present IVOR2, a significant evolution and refinement of the original Ivor microtonal virtual analog synthesizer design.
Introduced in this iteration are a new set of standard features that will be implemented in future updates to the other Xen-Arts instruments, as well as some new ones that are unique to this instrument and its particular type of oscillators:
A MOD-GEN is essentially a generalized hybrid Modulation Source Generator, which includes an envelope generator that can be switched between an ADSR or a Graphic Envelope Generator, and an LFO that can be switched to run at audio-rate: the ARO. The IVOR2 VSTi features eight total MOD-GEN of this type, which are used for modulating the Phase or Pulse-Width Modulation (PWM) of each oscillator waveform, the range of Phase & PWM, Crossfade Modulation (XFM), Filters, VCA and Pitch.
A powerful synthesis feature of the IVOR2 VSTi, is that when the MOD-GEN LFOs are switched to the ARO mode, they are capable of generating additional sideband spectra in the signal, resulting in complex, expressive and evolving timbres. Additionally, the frequency ratios of each ARO may be configured by loading a Partials File (TXT), which enables basic tuning and timbre correlations of the generated sideband spectra, especially where sine-waves are being used as the modulating waveform.
Oscillator A & B Pitch Modulation Polarity
All pitch-modulation sources may be configured so that the pitch of each oscillator can be modulated in a common direction and polarity, or the signals inverted for modulation in opposite directions, as well as switched to a static setting without modulation when, for example, using the MIDI Pitch Wheel Controller. When the modulation control signals are inverted, the phase of the modulation sources routed to each oscillator’s pitch is effectively at 180°.
Each of the below pitch modulation sources may be configured to modulate the pitch of the two oscillators in either a common direction and polarity (0° phase), or otherwise, in opposite (phase inverted 180°) directions:
- Pitch Bend Controller
- Mod-Wheel Vibrato
- Pitch Mod-Gen
- Harmonic Mod-Gen
Crossfade Modulation (XFM)
Crossfade Modulation itself is a common feature of contemporary synthesizers, however, this instrument enables a unique variant of the technique: partials-file controlled audio-rate modulation between two oscillator sources using a dedicated MOD-GEN, which is capable of generating intonation-related sideband spectra, thereby creating interesting sonic relationships between the microtuning and timbre of the instrument, and especially in the most simple XFM case scenario of using sinewaves with different pitch transposition offsets.
Phase & Pulse-Width Modulation with MOD-GEN
Unique to IVOR2 are the new and extremely versatile Phase & PWM Sliders and MOD-GEN routing options that replace the single control in the original version. Each oscillator has a pair of these range sliders, which can be set to fixed values, and MOD-GEN source routing selectors that can optionally override the sliders and their targets modulated with dedicated MOD-GEN.
In more typical synthesizer Phase and PWM modulation scenarios, the range of the modulation is set to fixed values. With IVOR2 the range can be fixed, or alternatively modulated by a MOD-GEN to create a huge variety of real-time timbral variations, sweeping notching effects, as well as FM timbres when running the LFO in a partials-file controlled audio-rate modulation (ARO) mode.
With these new phase and pulse-width modulation features, the IVOR2 VSTi opens myriad new and exciting realms of microtonal and xenharmonic sound-design possibility.
Jacky Ligon • Xen-Arts • 2016
IVOR2 • The Microtonal Virtual Analog Synthesizer by Xen-Arts
IVOR2 is a two-oscillator subtractive, FM, XFM and RM synthesizer that features full-controller MIDI Pitch Microtuning using MTS (MIDI Tuning Standard), where any MIDI Note Number can be freely microtuned to any desired pitch across the MIDI range, thereby enabling musicians and composers to explore the vast expressive possibilities of composing music with alternative intonation systems.
IVOR2 is a microtonal sound-designer’s virtual analog synthesizer with a carefully designed ergonomic workflow for quickly creating powerful sounding and musically useful timbres.
IVOR2 excels at making categories of timbres that include bass, distortion, keys, pads, broken, weird, leads and other analog synthesis types of sounds.
IVOR2 is an educational tool for learning about subtractive sound synthesis and musical instrument intonation (microtuning and xenharmonics).
IVOR2 embodies a design philosophy of simplicity for microtonal music sound-design:
- A knob-less design primarily featuring slider controls, which enables intuitive direct control with a computer mouse
- A dedicated control signal system mapped to the most important synthesis functions
- Settings are made by typing values into fields, dropdown lists, left-and-right arrows, switches and sliders
- Enables musicians to specify precise microtonal pitch-bend settings
- Features arbitrary microtonal oscillator transposition settings
- MIDI-CC modulation of harmonics enables dynamically playing harmonics of the fundamental pitch
- Two Oscillators with 22 Waveforms
- Microtonal, Cents-Based Oscillator Transposition
- Per-Oscillator Analog Pitch Drift Emulator
- Phase & Pulse-Width Modulation (PWM) Range Sliders
- Nine dedicated Modulation Generators (MOD-GEN), featuring an ADSR and Graphic Envelope Generator, and an LFO that can be switched to run at Audio-Rate, which are for modulating Phase (FM), Pulse-Width, XFM, Pitch, Filters and Amplitude (VCA)
- MIDI-CC-to-Harmonics Modulation enables oscillators to dynamically sound harmonics of the fundamental pitch
Oscillator Mixer Section
- Oscillator Mixer for setting relative oscillator volumes, Cross-Fade Modulation (XFM) and Ring Modulator (RM)
- Cross-Fade Modulation (XFM) Mode with six directional options for cross-fading between the two oscillators, including Sum (XFM bypass)
- Pre-Filter Saturation Stage with 20 Saturation Types
- Two Independent Filters with Six Filter Types: LP4, LP2, HPF, BPF, BRF, APF
- One and Two Stage Filter Cascade
- Parallel and serial order routing
- Unipolar and Bipolar Filter Modulation Modes
- Full controller MIDI Pitch Microtuning with MTS (MIDI Tuning Standard)
- MTS support for both Single Note and Bulk Dump: Loads MTS microtuning format files internally and receives MTS externally
- Patch (per-patch) and Global Microtuning (static microtuning for all patches)
- Microtunings can be loaded from any directory on hard drives or storage devices connected to the PC
- Partials file loader for patch-level partial retuning of MOD-GEN Audio-Rate Oscillators
- Modulation Effects include Chorus and two Phaser types
- MIDI: 12 Note Polyphonic, Monophonic Legato Mode, Monophonic Portamento, Microtonal Pitch Bend, Vibrato
- Ensemble: Tone Filters, Stereo Ensemble
- Delay: Stereo Delay effect
- 118 Factory Patches by Xen-Arts and Sevish
- 148 MTS Microtunings
- 91 Partials TXT Files for Audio-Rate Oscillator Modulation
- Instruction Manual
Download the IVOR2 ZIP archive installer:
Extract the entire contents of the IVOR2.zip archive into your VST plugin directory. This will place the VST DLL and all of the dependent files for the plugin in the required place, which will ensure the correct operation of all the synthesis features.
For example, using either of the popular WinRAR or 7-Zip archive utilities, Right-Click on the IVOR2.zip archive, drag it onto your VSTi directory, then from the pop-up menu, choose Extract Here. This will extract all of the content into a folder directory that will be labeled IVOR2. Within this main directory, one will find the following:
- IVOR2 sub-folder directory containing all of the microtunings (MID) and partials files (TXT), as well as the factory patch bank (FXB).
- IVOR2 Manual.pdf
- IVOR2 Patch List.txt
- Xen-Arts VSTi Microtuning & Partials Library Documentation.txt
IMPORTANT INFORMATION ABOUT XEN-ARTS SOFTWARE