task_categories:audio-classification language:en language:ar language:es language:hi language:ko language:vi language:zh license:cc-by-nc-4.0 size_categories:10K<n<100K format:parquet modality:audio modality:text library:datasets library:pandas library:polars library:mlcroissant arxiv:2601.14046 region:us speech accent l1-classification native-language-identification