MMS-300M — Shona ASR

facebook/mms-300m fine-tuned (character CTC head) on WaxalNLP sna_asr for the Waxal ASR challenge. Trained in bf16/fp32 with ctc_zero_infinity=True.

language_model/lm_sna.arpa is a KenLM 4-gram built from the training transcriptions, for beam-search decoding with pyctcdecode (tune alpha/beta on validation).