聆 to 声 in 术语 of their own 声音 and 樂/乐 特征 It is the opposite of Contextual 聆

樂/乐 聆 focuses on the 本质（自然） of 声 to their 樂/乐 关系 without reference to their 源 or cause This 术语 is often used in conjunction with 化 聆