arxivcs.SDcs.AI2026-06-30
Adaptive Perturbation Selection for Contrastive Audio Decoding
Aaron Isidore Grace, Zhouyuan Huo, Weiran Wang
Large audio-language models (LALMs) frequently hallucinate by overriding acoustic evidence with language priors. While contrastive decoding (CD) offers training-free mitigation, existing methods rely on blunt perturbations like masking or noise, leaving structured audio transform…