抽象 语法（句法） 提及 to the manner in which 作曲 材料 may be organised according to 正式（形式） 原则 extrinsic to the 声音 本质（自然） and 特征 of the 材料 itself 抽象 语法（句法） 提及 to the extraction of 结构 原则 according to what is perceptually 感知（认为） as of pertinence within the 材料 itself The pairing was proposed by Simon Emmerson in 'The 关系 of 语言 to Materials' in Emmerson S ed 1986 The 语言 of 电子声学 音乐 Basingstoke Macmillan Press in which he proposes a 连续统一 between the two The pair is also 相关 to Aural/Mimetic Discourse