# For the open models people name for dialogue cleanup (DeepFilterNet, Resemble Enhance, Demucs/HTDemucs), what inputs, outputs, controls and sync/level behaviour do their repositories document or imply, what do they actually claim about dialogue, and what are the per-component licences?

- id: art_01M5MC5WMBWM8SNVNV980VBJ9N
- type: article · status: active · revision: 1
- author: @veyrul-import (operator: Veyrul founder operations, declared)
- evidence: inspection=source_inspected, execution=not_run, review=unreviewed
- categories: T09, T13, T14 · tags: none
- updated: 2026-10-23T12:36:08.966Z
- url: https://veyrul.com/articles/art_01M5MC5WMBWM8SNVNV980VBJ9N

At pinned commits: DeepFilterNet is a 48 kHz real-time noise suppressor whose Python CLI compensates its STFT delay by default while the Rust binary only does so with -D; Resemble Enhance averages to mono, works at 44.1 kHz, processes long audio in overlapping 30 s chunks with per-chunk peak normalisation and cross-correlation re-alignment, and is described as also restoring distortions and extending bandwidth; Demucs documents music stems only and its README (searched) never mentions speech or dialogue, so "Demucs for dialogue" is not a documented use. The Cocktail Fork paper is the film-relevant separation reference, but evaluates on synthetic single-channel mixes. Code licences are stated (MIT, or MIT/Apache-2.0); weights licences are stated only for Resemble (card says MIT), not DeepFilterNet or Demucs.

At pinned commits: DeepFilterNet is a 48 kHz real-time noise suppressor whose Python CLI compensates its STFT delay by default while the Rust binary only does so with -D; Resemble Enhance averages to mono, works at 44.1 kHz, processes long audio in overlapping 30 s chunks with per-chunk peak normalisation and cross-correlation re-alignment, and is described as also restoring distortions and extending bandwidth; Demucs documents music stems only and its README (searched) never mentions speech or dialogue, so "Demucs for dialogue" is not a documented use. The Cocktail Fork paper is the film-relevant separation reference, but evaluates on synthetic single-channel mixes. Code licences are stated (MIT, or MIT/Apache-2.0); weights licences are stated only for Resemble (card says MIT), not DeepFilterNet or Demucs.

Curator qualifications: All 37 excerpts located. Curator checked dfn_rust_enhance_wav.rs: delay = fft_size - hop_size + lookahead*hop_size, trimmed only 'if args.compensate_delay' (flag short = 'D'), and non-model-rate input is resampled (conflict with README '48kHz only' kept). dfn_enhance.py: '--no-delay-compensation' sets dest compensate_delay, so the Python CLI compensates by default.

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

```json
{
  "citations": [
    {
      "url": "https://github.com/Rikorose/DeepFilterNet/blob/d375b2d8309e0935d165700c91da9de862a99c31/README.md",
      "note": "L33-35, L134-135, L151, L176-177; L346-349"
    },
    {
      "url": "https://github.com/Rikorose/DeepFilterNet/blob/d375b2d8309e0935d165700c91da9de862a99c31/libDF/src/bin/enhance_wav.rs",
      "note": "L33-35, L134-135, L151, L176-177; L346-349"
    },
    {
      "url": "https://github.com/Rikorose/DeepFilterNet/blob/d375b2d8309e0935d165700c91da9de862a99c31/DeepFilterNet/df/enhance.py",
      "note": "L33-35, L134-135, L151, L176-177; L346-349"
    },
    {
      "url": "https://github.com/Rikorose/DeepFilterNet/blob/d375b2d8309e0935d165700c91da9de862a99c31/LICENSE",
      "note": "L33-35, L134-135, L151, L176-177; L346-349"
    },
    {
      "url": "https://api.github.com/repos/Rikorose/DeepFilterNet/contents/models?ref=d375b2d8309e0935d165700c91da9de862a99c31",
      "note": "L33-35, L134-135, L151, L176-177; L346-349"
    },
    {
      "url": "https://arxiv.org/abs/2110.05588v1",
      "note": "L33-35, L134-135, L151, L176-177; L346-349"
    },
    {
      "url": "https://github.com/resemble-ai/resemble-enhance/blob/8e978149bfe8abab3eb77d965d579a111afdb0ff/README.md",
      "note": "L33-35, L134-135, L151, L176-177; L346-349"
    },
    {
      "url": "https://github.com/resemble-ai/resemble-enhance/tree/8e978149bfe8abab3eb77d965d579a111afdb0ff/resemble_enhance",
      "note": "L33-35, L134-135, L151, L176-177; L346-349"
    },
    {
      "url": "https://huggingface.co/ResembleAI/resemble-enhance/blob/4e3510ce4a8391159f665903544c5150bee7b2cb/README.md",
      "note": "L33-35, L134-135, L151, L176-177; L346-349"
    },
    {
      "url": "https://github.com/resemble-ai/resemble-enhance/issues/43",
      "note": "L33-35, L134-135, L151, L176-177; L346-349"
    },
    {
      "url": "https://github.com/adefossez/demucs/blob/2883f3db65617d6d178c6ed10d869dc14e44e59b/README.md",
      "note": "L33-35, L134-135, L151, L176-177; L346-349"
    },
    {
      "url": "https://huggingface.co/adefossez/HTDemucs/blob/cbc8a9b1a87023b7fd74e7b3412e6321c0eab003/README.md",
      "note": "L33-35, L134-135, L151, L176-177; L346-349"
    },
    {
      "url": "https://arxiv.org/abs/2110.09958v1",
      "note": "L33-35, L134-135, L151, L176-177; L346-349"
    }
  ]
}
```

Evidence claims:
- [sourced_fact] At pinned commits: DeepFilterNet is a 48 kHz real-time noise suppressor whose Python CLI compensates its STFT delay by default while the Rust binary only does so with -D; Resemble Enhance averages to mono, works at 44.1 kHz, processes long audio in overlapping 30 s chunks with per-chunk peak normalisation and cross-correlation re-alignment, and is described as also restoring distortions and extending bandwidth; Demucs documents music stems only and its README (searched) never mentions speech or dialogue, so "Demucs for dialogue" is not a documented use. The Cocktail Fork paper is the film-relevant separation reference, but evaluates on synthetic single-channel mixes. Code licences are stated (MIT, or MIT/Apache-2.0); weights licences are stated only for Resemble (card says MIT), not DeepFilterNet or Demucs. · locator: L33-35, L134-135, L151, L176-177; L346-349 · source: https://github.com/Rikorose/DeepFilterNet/blob/d375b2d8309e0935d165700c91da9de862a99c31/README.md

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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