Fine-Tuning Whisper for Automatic Speech Recognition in Baniwa: A Preliminary Study

• URL: http://arxiv.org/abs/2608.26060v1
• Date: Wed, 26 Aug 2026 17:29:47 GMT
• Title: Fine-Tuning Whisper for Automatic Speech Recognition in Baniwa: A Preliminary Study
• Abstract summary: This work presents a preliminary study on the adaptation of Whisper for Automatic Speech Recognition in Baniwa.<n>The experiments were conducted using a corpus of 1,373 manually transcribed recordings obtained from a linguistic documentation project.<n>The Whisper Small model was fine-tuned using supervised learning and evaluated using Word Error Rate (WER) and Character Error Rate (CER)
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Automatic Speech Recognition (ASR) technologies have achieved remarkable performance in recent years through the use of large multilingual foundation models. However, most advances remain concentrated on high-resource languages, while indigenous languages continue to suffer from a lack of speech resources and language technologies. This work presents a preliminary study on the adaptation of Whisper for Automatic Speech Recognition in Baniwa, an indigenous Arawakan language spoken in Brazil, Colombia, and Venezuela. The experiments were conducted using a corpus of 1,373 manually transcribed recordings obtained from a linguistic documentation project. The corpus contains approximately 0.54 hours of speech and consists primarily of isolated words and short elicited utterances. The Whisper Small model was fine-tuned using supervised learning and evaluated using Word Error Rate (WER) and Character Error Rate (CER). The best model achieved a WER of 37.5% and a CER of 7.45%, demonstrating that multilingual foundation models can be successfully adapted to extremely low-resource indigenous languages. The results establish an initial baseline for Baniwa Automatic Speech Recognition and provide a foundation for future research involving larger datasets, language-specific adaptation strategies, and post-processing techniques.

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