WTFM Wavetable FM Synthesizer

WTFM is not an FM synthesizer in the traditional sense.
Rather it is a hybrid synthesizer which uses the flexibility of Wavetables in combination with FM synthesizer Operators.
WTFM Wavetable FM Synthesizer produces complex harmonics by modulating the various selectable WT waveforms of the oscillators using further oscillators (operators).
Imagine the flexibility of the FM Operators using this method. Wavetables are a powerful way to make FM synthesis much more interesting.
WTFM is based on the classical Amp, Pitch and Filter Envelopes with AHDSR settings. PRE and POST filters include classical HP/BP/LP modes. 6 FXs (Vocoder / EQ Band / Chorus / Delay / Reverb) plus a Limiter which adds total control for the signal and colours of the Wavetable FM synthesis.
Operators Include 450+ Wavetables (each 64 singlecycle waveforms) all sorted into individual Categories.
The synthesizer includes a basic Modulation matrix for the main settings, special FX mod matrix, and also individual modulation routings to the various synthesizer elements.
WTFM includes 5 special modes:

Traditional Wavetable (WT) synthesis. 4 oscillators, each including 450+ Wavetables sorted into categories.
Classical 4-OP FM synthesis: each operator use 450+ Wavetables to modulate other operators in various routing variations of 24 FM Algorithms.
FM WT MOD SYNTHESIS: The selected Wavetable modulates the frequency of the FM Operators (Tune / Ratio).
RINGMOD Synthesis: The selected Wavetable modulates the Levels of the FM Operators similarly to a RingMod
FILTER FM Synthesis: The selected Wavetable modulates the Filter Frequency of the synthesizer.

This is a modern FM synthesizer with easy to program traditional AHDSR envelopes, four LFO lines, powerful modulations, internal effects, 24 FM algorithms. Based on the internal wavetable’s library with rich waveform content: 32 categories, 450+ wavetables (each with 64 single-cycle waveforms), up to 30,000 waveforms in all.

Classical oldschool FM synthesizers give control of the Operator Levels and Ratio as a main function. WTFM additionaly works with the Operators, morphing waveforms of the selected wavetable. The era of oldschool FM synthesis is now moving to the future.
Should you wish however, you can of course go back to its origins using the included classical waveforms

• Includes not only traditional Wavetable or 4-OP FM synthesis, but also Wavetable FM, RM and Filter FM modes.
• Available selection of the PRE and POST filters.
• 6 FXs (Vocoder / EQ Band / Chorus / Delay / Reverb), Limiter.
• 450+ Wavetables per Operator (Osc)
• 24 FM Algorithms
• Basic Modulation matrix, FX mod matrix and individual LFO routings to synthesizer elements.

MAIN CONTROL:

LEVEL
: Level knobs change the output Volume of the Carrier Operators and change the brightness and harmonics of the Modulator Operators.

RATIO
: Ratio knobs change the Pitch value of the Operators (mainly for the Carriers), and the Brightness and Harmonics for Modulators.

SCALE parameter toggles the RATIO measurement between a number of different modes (Lite & Full Coarse/Fine,Decimals, Pythagorian progression and MicroTune).

SEGMENT
: Operators include built-in Wavetables. The Segment fader changes the current position of the wavetable. Each Wavetable includes 64 waveforms. The Segment fader selects the waveform of the remaining 63 waveforms of the Wavetable.

OP-1 CONTROL
OP-1 Level works as the Main Operator’s Output Volume controller.
OP-1 Tune works as a classical Global Tune parameter in the range -36..0..+36 semitones

FEEDBACK: Sets self-feedback amount from the OP4 outputs. Creates a noisier and richer sounding waveform.

FM BREAKPOINT: Reduces progressively the levels of operators 2-4 above the breakpoint key. Works as a Key Tracker for high frequency damping. Note range from C0-A7.

Algorithms

The FM Engine includes 24 different algorithms which function as preset models for the Operators routing. (With modulator and carrier roles).

The Operator Algorithms aid in creating new sounds using different routings of the carriers and modulators.

WAVETABLE SELECTION
WTFM Synthesizer comes with more than 450 wavetables. Using the ”WTBL” button opens a pop-up menu within which the user can select wavetables from 32 different categories. The selected wavetable can be loaded into all the operators.
Default Position: ”Sine-Triangle”. This morphs between a sine waveform and a triangle waveform.

AMP SECTION
Every operator has its own Amp EG section. Amp envelope genarators are presented with classic ADHSR faders.
Attack, Delay and Release have additional curve parameters which change the curve type from linear to exponential.

EG SECTION
The display in the picture shows switching buttons between Filter / Tune / Ratio / Both envelope generators. The envelope generator is based on classic AHDSR parameters with control over EG and Velocity level.

OP LFO 1-4 SECTION
The display in the picture shows switching buttons between LFO 1/2/3/4. Four LFO lines are available as a source for modulating different elements of the synthesizer

FILTER SECTION
The filter section works with both pre and post filtering.
Pre filter: up to 4-pole multimode filter for each voice of the synthesizer
Post filter: Master multimode filter.

OPERATORS SCALE MODE
OP-1 Tune and OP-2..OP-4 Ratio settings can be scaled in a number modes
Coarse/Fine Tune LT based on the steps like 0.125, 0.25, 0.5, 1.0, 1.125…36.0)
Coarse/Fine Tune FL based on the steps like 0.01..0.99
Decimals Tune based on the steps like 0.01..0.99
Pythagorian Tune based on the steps like √(Pi/2)xN
Microtune based on the steps like 0.001, 0.002.. 36.000

SYNTHESIS MODES:

The Synthesizer includes 3 additional synthesis modes, which can modulate the Wavetable using different parameters: FM WT MOD / RINGMOD / FILTER MOD

FM WT MOD SYNTHESIS
Selected Wavetable modulates the frequency of the FM Operators
(Tune / Ratio).
With high WT tune, a high-speed vibrato and tone the changes can be heard.
With low WT tune the vibrato effect is more subtle.
WT tune changes the pitch of modulated signal

RINGMOD SYNTHESIS
Selected Wavetable modulates the Levels of the FM Operators like a RingMod.
With high WT tune, high-speed tremolo or tonal changes are heard easily.
With low WT tune, tremolo effect is more subtle.
WT tune changes the amplitude (lower tune = louder modulation)

FILTER FM SYNTHESIS
Selected Wavetable modulates Filter Frequency of the master output Ladder filter.
With high WT tune a high-WahWah effect is easily heard.
With low WT tune, the WahWah effect is more subtle.
WT tune changes the Cutoff frequency

EFFECTS SECTION

The Synthesizer includes internal effects:
- Vocoder
- EQ Band
- Resonator
- Chorus
- Delay
- Reverb
- Limiter

VOCODER INPUTS:
audio inputs for an external signal routed to the Vocoder FX. It is also possible to use other fx as an external signal.
Effects include Modulation matrix at the rear side panel with Source, Destination and Amount settings.

CV I/O

• 23 CV modulation inputs
• 4 LFO CV outputs

UPDATE 1.1:

• Skin option (Grey / Colour / Gold)
• New wavetable: DX87that (8 waveforms of the legendary 1980s FM synth)
• FX Matrix now include Vocoder (possible to modulate Vocoder Mix for the morphing between External signal and WTFM tone)
• small patch fixes