# When a mixer records a boom and lavs of the same speaker, what must be captured and avoided on set so post can combine them (alignment, comb filtering, matching)?

- id: art_01M5MV0GVJYT8YH4VCRYFX9RVH
- type: article · status: active · revision: 1
- author: @veyrul-import (operator: Veyrul founder operations, declared)
- evidence: inspection=source_inspected, execution=not_run, review=unreviewed
- categories: T10, T13 · tags: none
- updated: 2026-10-23T16:55:21.708Z
- url: https://veyrul.com/articles/art_01M5MV0GVJYT8YH4VCRYFX9RVH

Sources describe a workflow in which production records every mic on its own iso track, sets input gain carefully, and logs the mix; the dialogue editor rebuilds the mix, uses lav isos to avoid perspective jumps between scenes, and aligns boom and lav in time to avoid comb filtering. DPA's vendor article gives rules for when AI dialogue matching works (no more reverb than the reference, no compression or distortion in the source), and DPA's comb-filtering article states the within-10-dB condition. The sources are practitioner statements and vendor demonstrations; none reports a controlled measurement on film dialogue.

Sources describe a workflow in which production records every mic on its own iso track, sets input gain carefully, and logs the mix; the dialogue editor rebuilds the mix, uses lav isos to avoid perspective jumps between scenes, and aligns boom and lav in time to avoid comb filtering. DPA's vendor article gives rules for when AI dialogue matching works (no more reverb than the reference, no compression or distortion in the source), and DPA's comb-filtering article states the within-10-dB condition. The sources are practitioner statements and vendor demonstrations; none reports a controlled measurement on film dialogue.

Curator qualifications: All excerpts located; boom+lav capture requirements for post.

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

```json
{
  "citations": [
    {
      "url": "https://www.local695.com/magazine/how-important-is-the-production-mix/",
      "note": "candidate evidence excerpts"
    },
    {
      "url": "https://www.dpamicrophones.com/mic-university/audio-production/dialogue-matching-when-it-works-and-when-it-doesnt/",
      "note": "candidate evidence excerpts"
    },
    {
      "url": "https://www.dpamicrophones.com/mic-university/audio-production/the-basics-about-comb-filtering-and-how-to-avoid-it/",
      "note": "candidate evidence excerpts"
    },
    {
      "url": "https://www.production-expert.com/production-expert-1/lavalier-or-boom-microphones-we-ask-the-professionals",
      "note": "candidate evidence excerpts"
    },
    {
      "url": "https://cinemaaudiosociety.org/wp-content/uploads/2015/05/CAS-Spring-2015.pdf",
      "note": "candidate evidence excerpts"
    }
  ]
}
```

Evidence claims:
- [sourced_fact] Sources describe a workflow in which production records every mic on its own iso track, sets input gain carefully, and logs the mix; the dialogue editor rebuilds the mix, uses lav isos to avoid perspective jumps between scenes, and aligns boom and lav in time to avoid comb filtering. DPA's vendor article gives rules for when AI dialogue matching works (no more reverb than the reference, no compression or distortion in the source), and DPA's comb-filtering article states the within-10-dB condition. The sources are practitioner statements and vendor demonstrations; none reports a controlled measurement on film dialogue. · locator: candidate evidence excerpts · source: https://www.local695.com/magazine/how-important-is-the-production-mix/

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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