SAMPLED

Synthesis and sound design · updated 2026-08-16

MODULATION MATRIX

A routing grid that connects sources (LFOs, envelopes, velocity) to destinations (cutoff, pitch, pan) with an amount for each.

Close-up of a Eurorack modular synthesizer: oscillator, filter and envelope modules wired together with patch cables, showing the signal path these synthesis terms describe.
Synthesis and sound design — Close-up of a Eurorack modular synthesizer: oscillator, filter and envelope modules wired together with patch cables, showing the signal path these synthesis terms describe.

Photo: Eurorack Modular Synthesizer Closeup (opens in a new tab) by Nir Yaniv (opens in a new tab), via Wikimedia Commons — CC BY-SA 4.0 (opens in a new tab)

Key takeaways

  • A routing grid that connects sources (LFOs, envelopes, velocity) to destinations (cutoff, pitch, pan) with an amount for each.
  • It is what turns a static patch into an instrument that responds to how it is played.
  • Route aftertouch to filter cutoff and LFO depth so leaning into a note opens and animates the sound.
  • Watch out: filling every slot.
  • Sits under synthesis and sound design in this glossary, with 2 primary sources below.

Quick checklist

  • Can you define modulation matrix in one sentence without looking?
  • Can you point at modulation matrix in a real session, mix or contract?
  • Have you tried the practical move above at least once?
  • Would you catch the common mistake before it costs you a take?
  • Have you opened one of the primary sources below rather than a forum thread?

MODULATION MATRIX IN DEPTH

A mod matrix is a routing table connecting sources — envelopes, LFOs, velocity, aftertouch, macros — to destinations, each with its own depth. It is what turns a static patch into an instrument that responds to how it is played.

How it works in practice

Route aftertouch to filter cutoff and LFO depth so leaning into a note opens and animates the sound.

The mistake people make

Filling every slot. Three well-chosen routings usually beat ten that fight each other for the same parameter.

WHERE MODULATION MATRIX SITS

Modulation matrix belongs to synthesis and sound design in the Sampled music glossary. How synths make sound, in the order the signal actually travels.

TEST YOURSELF

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3 quick questions on modulation matrix. Answers are marked instantly — nothing is sent anywhere.

  1. 1. Which statement best describes modulation matrix?

  2. 2. What is the mistake people most often make with modulation matrix?

  3. 3. In practice, which of these applies to modulation matrix?

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SOURCES AND CITATIONS

Free, primary references for modulation matrix — standards bodies, manufacturers, government offices and university course material. Each one lists the line of this entry it backs up.

  • Sequential manuals (opens in a new tab)

    Primary reference · sequential.com

    “A routing grid that connects sources (LFOs, envelopes, velocity) to destinations (cutoff, pitch, pan) with an amount for each.”— the claim this source supports

    Why it counts: Published by the organisation responsible for the thing being defined, so it is a first-hand source rather than a summary of one.

  • Arturia — manuals and resources (opens in a new tab)

    Primary reference · arturia.com

    “A mod matrix is a routing table connecting sources — envelopes, LFOs, velocity, aftertouch, macros — to destinations, each with its own depth.”— the claim this source supports

    Why it counts: Published by the organisation responsible for the thing being defined, so it is a first-hand source rather than a summary of one.

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