sub-audible sound編輯正在努力提供更完整的內容，建議 20 分鐘後再回來看看sub-audible soundsub-audible sound — 名詞名詞1. a sound too low in frequency to be heard by humans1.名詞釋義次聲a sound too low in frequency to be heard by humans例句The sub-audible sound made the windows vibrate.