src/transformers/models/speecht5/tokenization_speecht5.py/SpeechT5Tokenizer/_tokenize
class SpeechT5Tokenizer:    def _tokenize(self, text: str) -> List[str]:
        """Take as input a string and return a list of strings (tokens) for words/sub-words"""
        return self.sp_model.encode(text, out_type=str)