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arXiv · 2610.26448

TeleASR-Amharic: A Benchmark for Robust Amharic ASR in Realistic Telecommunication Conditions

Dagnachew Mekonnen Marilign·Enrique Molero·Abrham Haile·Louis Powell·Israel Abebe Azime
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Abstract

The real-world usability of ASR models remains challenging, particularly for low-resource languages, where existing speech resources are often collected in clean studio environments. In this work, we introduce TeleASR-Amharic, a benchmark for evaluating Amharic ASR under various acoustic and telecommunication conditions. We analyze the major degradations observed in real telecommunications recordings and develop a benchmark that covers multiple channel conditions, environmental disturbances, and telecom-domain variations. Our results show that telecommunication degradation can substantially reduce recognition performance, making even high-performing ASR models impractical under severe conditions. For example, the WER of the best-performing model increases from 0.23 to 0.79 under severe telecommunication degradation, corresponding to a relative increase of 243% in recognition errors. We further investigate the effects of different noise and channel distortions and show that scaling training data and applying carefully designed telecommunication-aware augmentation substantially improve robustness. In particular, our best training configuration achieves a 23.6% relative WER reduction under extreme noise conditions. Together with the release of our telecommunications-domain data, these findings provide a reproducible benchmark for measuring progress in Amharic ASR while highlighting open challenges in developing robust speech technologies for real-world deployment.

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Dagnachew Mekonnen Marilign, Enrique Molero, Abrham Haile, Louis Powell, Israel Abebe Azime. 2026-10-19. TeleASR-Amharic: A Benchmark for Robust Amharic ASR in Realistic Telecommunication Conditions. https://arxiv.org/abs/2610.26448

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