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Quetzalcoatl quick guide

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Rick edited this page Jun 2, 2024 · 14 revisions

Quetzalcoatl is essentially 8 sample based synth voices stacked together with independent control over several key parameters. In traditional synthesise terms you could say a single Quetzalcoatl “voice” in has a signal chain something like this:

VCO (sample) > VCA (pre XF Gain) > VCA (For X-Fade) > - Filter - VCA (envelope).

X-FADE

Crossfader

Apply several different crossfading and layering effects to the 8 voices.

Controls:

  • X-fade - crossfade between the voices
  • Fade Mode - Select one of five x-fade modes
  • Stages - Select between 8, 4 & 2 active voices*
  • Smooth - Smooths out the levels between crossfades
  • Env 1 - Applies the XF ENV 1 modulator to the x-fade
  • Env 2 - Applies the XF ENV 2 modulator to the x-fade
  • Mod A - Applies Mod A to the x-fade
  • Mod B - Applies Mod B to the x-fade
  • Vel - Applies velocity modulation to the x-fade
  • AT - Applies channel aftertouch the x-fade
  • Trk - Applies keyboard tracking to the x-fade

*Reducing the number of stages should improve performance.

STAGES

Use the stages menu to switch between pages.

Tuning

Tuning

  • Tuning - The 8 sliders control the pitch of a single voice
  • Pitch mode - Select one of several pitch modes. These will lock (or not**) the pitch of the voice to a particular scale or tuning.
  • Offset - Offsets the relative position of each of the tuning sliders
  • Mod - Applies Mod B to the offset value
  • Vel - Applies velocity modulation to the offset value
  • AT - Applies channel aftertouch the offset value
  • Trk - Applies keyboard tracking to the offset value
  • **Mod 1-8 ** - Per stage modulation
  • Glide 1-8 - per stage glide

Gain

Gain

  • Gain - The 8 sliders control the gain (pre Xfade) of a single voice
  • Offset - Offsets the relative position of each of the gain sliders
  • Mod 1-8 - Per stage modulation

Filter

Filter

  • Cutoff - The 8 sliders control the cutoff of a single voice
  • Mode - Select between low pass, high pass and band pass filter modes
  • Offset - Offsets the relative position of each of the cutoff sliders
  • Env 1 - Applies the Filter ENV 1 modulator to the cutoff offset
  • Env 2 - Applies the Filter ENV 2 modulator to the cutoff offset
  • Mod A - Applies Mod A to the cutoff offset
  • **Mod B **- Applies Mod B to the cutoff offset
  • Vel - Applies velocity modulation to the offset value
  • AT - Applies channel aftertouch the offset value
  • Trk - Applies keyboard tracking to the offset value
  • **Mod 1-8 ** - Per stage modulation

Overview

Overview

Gives quick access to the main pitch, gain and filter controls.

User tuning

Tuning

Used in conjunction with the user pitch mode. Set 16 pitches to create scales etc. Mode button switches between semi-tone and free adjustments.

Amp

Amp

  • Envelope - A standard ADSR envelope controlling the gain
  • Vol - Controls master volume
  • Vel - Velocity modulation of the master volume
  • Pan - 8 sliders control the pan of each of the voices

Delay

A multistage delay FX

  • Time - 8 sliders control the delay time
  • Offset - Offsets the relative position of each of the delay sliders (adjacent switch selects between free and synced modes)
  • Time Mod - modulates the delay time offset
  • Div - divide the delay time
  • Cut - Applies a low filter to the delay signal
  • Cut Mod - modulates the cutoff
  • Feedback - delay feedback
  • Mix - mix between wet and dry

Files

Files

  • Expansion - Select an expansion pack to load
  • Presets - load, save and manage presets
  • Samples - Load multi-samples, change sample modes, import user waves and SFZs

Samples Page

Load and manage sample files.

Mod A

Mod A

Select between the polyphonic modulation options available to the x-fade and filter.

  • Tempo - set the tempo of the step and LFO modulators
  • **Div **- Divide the tempo rate
  • Modę - switch between step and LFO modes
  • One shot - The modulator only plays once
  • Steps - set the number of stages in the step modulator

Envelopes

Envelopes

  • Env 1 - A standard ADSR envelope
  • Env 2 - A Looping AR envelope

Mod B

Mod B

Select between 12 monophonic modulators

  • Tempo - set the tempo of the step and LFO modulators
  • **Div **- Divide the tempo rate
  • Modę - switch between step and table modes
  • One shot - The modulator only plays once
  • Steps - set the number of stages in the step modulator
  • Mod - Modulate the tempo
  • Trig - set a trigger source (free, on key press or another modulator)

Global

Global

  • Glide - set a glide amount
  • Time - set the glide time
  • Div - divide the glide time
  • Unison - increase the number of voices played per key (beyond 2 and playback becomes monophonic)
  • Detune - detune the stacked voices
  • Spread - pan the voices
  • Pitch mod - modulates the global pitch
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