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ComfyUI-SelVA/nodes
Ethanfel c53ea5517c feat: add FA-GAN phase-aware STFT loss to BigVGAN trainer
Adds L1 loss on real, imaginary, and magnitude STFT components across
three resolutions (FA-GAN, arXiv:2407.04575). Penalizes phase smearing
directly — magnitude-only losses cannot distinguish correct spectrum
with wrong phase from a smeared spectrum.

Controlled by lambda_phase (default 1.0, 0 = disabled). Applied on top
of both the discriminator FM path and the fallback mel+STFT path.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-04-09 16:09:31 +02:00
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