ADDAC Systems — ADDAC-207 Quantizer

• Manual PDF

ADDAC207 Intuitive Quantizer User’s Guide (PDF)

How to Use the ADDAC207 Intuitive Quantizer to Create Full-Length Eurorack Songs

Creating jams or short loops in Eurorack is a blast—but ‘songifying’ a patch is a different challenge! The ADDAC207 Intuitive Quantizer is a powerful tool that, when used creatively with other modules, can help build dynamic, evolving, and structured full-length modular songs. Below is an analysis and some concrete ideas for leveraging the ADDAC207 in more “compositional” ways.

Key Features of the ADDAC207 for Song Structure

• Four independent quantizer channels (“voices”)
  Quantize up to four separate CV sources, which can be used for melody, harmony, bass, or other lines. They can share a scale/key or work independently.

• User-definable & recallable scales, user presets
  Switch musical keys, scales, or microtuning on the fly or via CV, ideal for structured pattern changes (verse/chorus/bridge).

• Assignable CV input for menu control
  Morph scales, change quantization type, transpose, alter gate lengths or trigger repeats—all dynamically with external CV for performative and automated changes.

• Keyboard mode
  Use the front-panel buttons as a playable mono keyboard or chord trigger, great for hands-on performance sections.

• Chord generation via interval assignment
  Assign fixed intervals (thirds, fifths, sevenths, etc) to other voices for instant harmonization and chord sequence changes.

• Preset system
  Rapidly recall entire quantizer states.

Song-Building Techniques & Patch Ideas

1. Use Presets for Sections (Verse/Chorus/Bridge, etc.)

• Save scales, intervals, and gate settings for each section into different ADDAC207 presets.
• Use the assignable CV preset change (assign CV to Preset switching) and trigger with a sequencer, LFO, or footswitch to move through song sections.
  Patch Idea: Use a stepped CV sequencer to send different voltages to Preset CV input at each song section.

2. Automate Scale and Key Changes

• Assign your transpose input or scale CV assignment to an external sequencer for algorithmic/acoustic 'modulation'.
• For key modulations (e.g., up a fourth or down a minor third for bridges), use a precision adder/offset or sequencer to drive the transpose input.
• Use the microtonal features for special sections (e.g., an "otherworldly" bridge).

3. Chord Progressions and Harmonic Evolution

• Use one sequencer or random CV source for voice 1 (root), and assign intervals (third, fifth, seventh) to voices 2–4 for auto-harmonizing chords.
• Change intervals ‘live’, with assignable CV or gate. For example:
• Verse: Voice 2 = third, Voice 3 = fifth
• Chorus: Voice 2 = fifth, Voice 3 = seventh—switch with CV.
• Combine with a trigger sequencer to ‘revoice’ chords.

4. Dynamic Arrangement Through Quantization Types

• Use the “Ignore” mode (quantize only when in scale), “Above”, or “Below” to change melodic feel.
• Assign CV to Quantization Type and automate changes (for example, verse is “Above”, chorus is “Ignore”).

5. Complex Phrasing and Rhythmic Variation

• Vary Gate Lengths (per section or per voice) via remote control.
• Set up voice inputs to quantize only on incoming gate/trig—combine with rhythmic trigger sequencers or envelope generators for note density control.

6. Create Evolving Melodic Lines or Riffs

• Use slow, phased, or modulated random LFOs/sequencers for melodic motion into the quantizer, but recall new scales/presets over time to radically shift feel.
• Send clocked random or vector generators into voice 1 for semi-generative melodies, then evolve them by shifting scale or intervals.

7. Performative Approaches

• Use Keyboard mode to directly ‘play’ in melodies/chords for solos or live overdubs.
• Combine with a looper or sampler module to record/resample generated motifs for classic “build and release” songwriting.

8. CV-Scene Automation with Other Modules

• Sequencers (e.g., Stillson Hammer, Eloquencer, Metropolis)
• Sequence ADDAC207’s Preset or Assign inputs for hands-off song structure changes.
• Switches/Matrix Mixers (e.g., Doepfer A-150, XAOC Warna)
• Route different CV sources into the quantizer at different song sections.
• Random/Generative Modules (e.g., Turing Machine, S&H)
• Feed evolving voltages, then steer the musical sense with scale/preset changes.
• CV Recorders (e.g., 4ms Looping Delay, Disting EX)
• Record dynamic assign CV motions for playback and repeatable ‘song’ automations.
• Clocked LFOs/Euclidean Rhythms for evolving trigger/gate patterns.

Example Workflow for a Full-Length Song

1. Intro: Use a narrow scale/preset with long gates and slow random CV into one channel for an ambient start.
2. Verse: Switch to a full major/minor scale via preset, assign trigger/gate inputs to quantize melodically, use two or three voices for chords.
3. Bridge: Morph the scale (harmonic modulation), increase intervals (stack chords more densely), or invoke microtonality.
4. Chorus: Wider scale, more harmonies (activate all 4 voices in chord mode), faster gate lengths.
5. Breakdown: Change quantizer to “Ignore” type for sparse melodic lines, perhaps switch to Keyboard mode for live play or silence voices for a moment.
6. Outro: Return to initial scale/preset or dramatically modulate to an unexpected one for a twist ending.

All section changes can be pre-programmed by using a CV preset controller (e.g., via a sequencer or even manually), keeping your patch intact while the underlying musical structure evolves.

Tips

• Plan Scenes: Decide what scales/modes/interval combos you'll use for different sections before you start the patch.
• CV Animate Everything: The more you control via assignable CV, the more 'song-like' your modular set will become.
• Presets are Key: Use all 11 presets—each can be a scene, moment, or song section.
• Sync Everything: Use a master clock and/or reset signal to keep changes and patterns in line.

For even more ideas and automation tools, check out eurorack utilities that can create programmatic or performable “scene” or “macro” control over multiple CV destinations.

Generated With Eurorack Processor