Flavors of Moonshine: Tiny Specialized ASR Models for Edge Devices

Fuente: arXiv
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Autori principali: King, Evan, Sabra, Adam, Kudlur, Manjunath, Wang, James, Warden, Pete
Natura: Preprint
Pubblicazione: 2025
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author King, Evan
Sabra, Adam
Kudlur, Manjunath
Wang, James
Warden, Pete
author_facet King, Evan
Sabra, Adam
Kudlur, Manjunath
Wang, James
Warden, Pete
contents We present the Flavors of Moonshine, a suite of tiny automatic speech recognition (ASR) models specialized for a range of underrepresented languages. Prevailing wisdom suggests that multilingual ASR models outperform monolingual counterparts by exploiting cross-lingual phonetic similarities. We challenge this assumption, showing that for sufficiently small models (27M parameters), training monolingual systems on a carefully balanced mix of high-quality human-labeled, pseudo-labeled, and synthetic data yields substantially superior performance. On average, our models achieve error rates 48% lower than the comparably sized Whisper Tiny model, outperform the 9x larger Whisper Small model, and in most cases match or outperform the 28x larger Whisper Medium model. These results advance the state of the art for models of this size, enabling accurate on-device ASR for languages that previously had limited support. We release Arabic, Chinese, Japanese, Korean, Ukrainian, and Vietnamese Moonshine models under a permissive open-source license.
format Preprint
id arxiv_https___arxiv_org_abs_2509_02523
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Flavors of Moonshine: Tiny Specialized ASR Models for Edge Devices
King, Evan
Sabra, Adam
Kudlur, Manjunath
Wang, James
Warden, Pete
Computation and Language
Machine Learning
Sound
We present the Flavors of Moonshine, a suite of tiny automatic speech recognition (ASR) models specialized for a range of underrepresented languages. Prevailing wisdom suggests that multilingual ASR models outperform monolingual counterparts by exploiting cross-lingual phonetic similarities. We challenge this assumption, showing that for sufficiently small models (27M parameters), training monolingual systems on a carefully balanced mix of high-quality human-labeled, pseudo-labeled, and synthetic data yields substantially superior performance. On average, our models achieve error rates 48% lower than the comparably sized Whisper Tiny model, outperform the 9x larger Whisper Small model, and in most cases match or outperform the 28x larger Whisper Medium model. These results advance the state of the art for models of this size, enabling accurate on-device ASR for languages that previously had limited support. We release Arabic, Chinese, Japanese, Korean, Ukrainian, and Vietnamese Moonshine models under a permissive open-source license.
title Flavors of Moonshine: Tiny Specialized ASR Models for Edge Devices
topic Computation and Language
Machine Learning
Sound
url https://arxiv.org/abs/2509.02523