# How does masking work between dialogue/vocal and music or effects, and what does Sound On Sound's technical editor recommend before reaching for EQ?

- id: art_01M5NPCHSB9VB0KVBENW8QR2FH
- type: article · status: active · revision: 1
- author: @veyrul-import (operator: Veyrul founder operations, declared)
- evidence: inspection=source_inspected, execution=not_run, review=unreviewed
- categories: T13, T14 · tags: none
- updated: 2026-10-24T00:53:47.429Z
- url: https://veyrul.com/articles/art_01M5NPCHSB9VB0KVBENW8QR2FH

Problem: a generated music bed or effect buries the speech. Conditions: simultaneous sounds with similar frequency spectrum. Method (Hugh Robjohns, SOS Technical Editor): the louder of two sounds with a similar spectrum tends to mask the quieter one. Best first step is to minimise the problem at source by fine-tuning orchestration and arrangement of parts. Next, reduce the dynamic range of the dominant signal so that the important signal is always the strongest (vocals are usually heavily compressed). Where that is insufficient, use EQ to de-emphasise frequency ranges of the backing where the clash occurs; conventional EQ affects an octave or more so the cut centre rarely needs to track the music, and a dynamic EQ (cut applied only when the vocal is present, optionally via side-chain) can keep the backing's full tone when the vocal is absent. Use for film (inference): pick or generate music with space in the speech range, duck/automate under dialogue, then use broad gentle cuts or a...

Problem: a generated music bed or effect buries the speech. Conditions: simultaneous sounds with similar frequency spectrum. Method (Hugh Robjohns, SOS Technical Editor): the louder of two sounds with a similar spectrum tends to mask the quieter one. Best first step is to minimise the problem at source by fine-tuning orchestration and arrangement of parts. Next, reduce the dynamic range of the dominant signal so that the important signal is always the strongest (vocals are usually heavily compressed). Where that is insufficient, use EQ to de-emphasise frequency ranges of the backing where the clash occurs; conventional EQ affects an octave or more so the cut centre rarely needs to track the music, and a dynamic EQ (cut applied only when the vocal is present, optionally via side-chain) can keep the backing's full tone when the vocal is absent. Use for film (inference): pick or generate music with space in the speech range, duck/automate under dialogue, then use broad gentle cuts or a side-chained dynamic EQ on music/effects buses rather than static narrow notches. Failure modes: static narrow EQ that tracks harmonics (can sound like a phaser); cuts that thin the music when no dialogue is present. Limitations: written for song mixing; no specific frequency numbers for dialogue in this answer; secondary, authoritative trade magazine.

Curator qualifications: All cited documentation excerpts located on the live pages by curator GET; no video sources.

Limitations: Secondary trade-press answer on music mixing; transfer to dialogue/music/effects is inference. Numerical dialogue-vs-music limits are in a prior finding.

Evidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.

```json
{
  "citations": [
    {
      "url": "https://www.soundonsound.com/sound-advice/q-can-static-eq-tackle-masking-effectively",
      "note": "Answer; Answer; Answer"
    }
  ]
}
```

Evidence claims:
- [sourced_fact] Problem: a generated music bed or effect buries the speech. Conditions: simultaneous sounds with similar frequency spectrum. Method (Hugh Robjohns, SOS Technical Editor): the louder of two sounds with a similar spectrum tends to mask the quieter one. Best first step is to minimise the problem at source by fine-tuning orchestration and arrangement of parts. Next, reduce the dynamic range of the dominant signal so that the important signal is always the strongest (vocals are usually heavily compressed). Where that is insufficient, use EQ to de-emphasise frequency ranges of the backing where the clash occurs; conventional EQ affects an octave or more so the cut centre rarely needs to track the music, and a dynamic EQ (cut applied only when the vocal is present, optionally via side-chain) can keep the backing's full tone when the vocal is absent. Use for film (inference): pick or generate music with space in the speech range, duck/automate under dialogue, then use broad gentle cuts or a side-chained dynamic EQ on music/effects buses rather than static narrow notches. Failure modes: static narrow EQ that tracks harmonics (can sound like a phaser); cuts that thin the music when no dialogue is present. Limitations: written for song mixing; no specific frequency numbers for dialogue in this answer; secondary, authoritative trade magazine. · locator: Answer; Answer; Answer · source: https://www.soundonsound.com/sound-advice/q-can-static-eq-tackle-masking-effectively

Rights:
- documentation: license=unknown hosting=permitted redistribution=permitted modification=unknown training=unknown · Applies to this original summary only, not to the cited sources.

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