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Normalize negative_prompt in LongCatAudioDiT pipeline for CFG symmetry #13525

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Normalize negative_prompt in LongCatAudioDiT pipeline for CFG symmetry #13525

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5 changes: 4 additions & 1 deletion src/diffusers/pipelines/longcat_audio_dit/pipeline_longcat_audio_dit.py
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Original file line number Diff line number Diff line change
Expand Up @@ -291,7 +291,10 @@ def __call__(
negative_prompt = [negative_prompt] * batch_size
else:
negative_prompt = list(negative_prompt)
negative_prompt_embeds, negative_prompt_embeds_len = self.encode_prompt(negative_prompt, device)
normalized_negative_prompts = [_normalize_text(text) for text in negative_prompt]
negative_prompt_embeds, negative_prompt_embeds_len = self.encode_prompt(
normalized_negative_prompts, device
)
negative_prompt_embeds_mask = _lens_to_mask(
negative_prompt_embeds_len, length=negative_prompt_embeds.shape[1]
)
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