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feat: add post-generation audio enhancement nodes

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Three new nodes for post-generation quality improvement:

- SelvaHarmonicExciter: multi-band exciter (HPF → tanh saturation → mix)
  restores harmonic richness lost in BigVGAN HF reconstruction

- SelvaFlashSR: audio super-resolution via FlashSR basic model
  (haoheliu/versatile_audio_super_resolution, requires pip install audiosr)
  predicts missing HF content above vocoder reconstruction ceiling

- SelvaOutputNormalizer: BS.1770-4 LUFS normalization + true peak limiting
  for consistent loudness on generated outputs (pyloudnorm)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
Ethanfel
2026-04-09 16:27:39 +02:00
parent 45fced55bc
commit ce62bccc1f
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nodes/__init__.py
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@@ -29,6 +29,9 @@ _NODES = {
"SelvaDatasetInspector": (".selva_dataset_pipeline", "SelvaDatasetInspector", "SelVA Dataset Inspector"),
"SelvaDatasetItemExtractor": (".selva_dataset_pipeline", "SelvaDatasetItemExtractor", "SelVA Dataset Item Extractor"),
"SelvaDatasetSaver": (".selva_dataset_pipeline", "SelvaDatasetSaver", "SelVA Dataset Saver"),
"SelvaHarmonicExciter": (".selva_audio_postprocess", "SelvaHarmonicExciter", "SelVA Harmonic Exciter"),
"SelvaFlashSR": (".selva_audio_postprocess", "SelvaFlashSR", "SelVA FlashSR"),
"SelvaOutputNormalizer": (".selva_audio_postprocess", "SelvaOutputNormalizer", "SelVA Output Normalizer"),
}
for key, (module_path, class_name, display_name) in _NODES.items():