arXiv — Machine Learning · · 3 min read

What Was That Again? Certified Robustness for Automatic Speech Recognition

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Computer Science > Machine Learning

arXiv:2606.27698 (cs)
[Submitted on 26 Jun 2026]

Title:What Was That Again? Certified Robustness for Automatic Speech Recognition

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Abstract:Automatic Speech Recognition systems are notoriously both sensitive to adversarial and benign perturbations. While this has been repeatedly demonstrated using reference datasets, detecting such behaviors in deployed systems is incredibly challenging, due to the absence of oracle knowledge of the true transcription. We demonstrate that employing a certification-inspired mechanism can significantly decrease WER, increase recall, and decrease the Spearman correlation between confidence and WER. We achieve this through a dual-gate diagnostic pipeline: a Two-Sided Atomic Audit that accumulates statistical wealth to certify both token existence and adversarial exclusion, and a Rank-Based Tournament that selects the winning sequence. Our evaluations across four diverse architectures demonstrate up to a 55% relative reduction in Word Error Rate, while also providing granular word- and sentence-level certifications to enhance acoustic security.
Comments: 17 pages
Subjects: Machine Learning (cs.LG); Artificial Intelligence (cs.AI); Cryptography and Security (cs.CR); Sound (cs.SD)
Cite as: arXiv:2606.27698 [cs.LG]
  (or arXiv:2606.27698v1 [cs.LG] for this version)
  https://doi.org/10.48550/arXiv.2606.27698
arXiv-issued DOI via DataCite (pending registration)

Submission history

From: Andrew Cullen [view email]
[v1] Fri, 26 Jun 2026 03:54:20 UTC (431 KB)
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