task_categories:automatic-speech-recognition task_categories:text-to-speech task_categories:question-answering multilinguality:monolingual language:en license:apache-2.0 arxiv:2509.09174 region:us Audio Speech Text speech-to-speech audio-to-audio speech-dialogue dialogue conversational-ai llm multi-turn synthetic-speech single-timbre instruction-following alignment asr wer tts