In 舍费尔 理论 typo-morphology is the 起始 相位 of the programme of 樂/乐 研究 which regroups as complementary the two procedures of 类型学 and 形态学 these actually constitute a stage of exploring assessing and 描述 声波 whereas the two procedures of 分析 and 合成 arise from an 分析 and an exploitation of the 樂/乐 capacities of the 声波 对象 Thus typo-morphology is a descriptive inventory which precedes 樂/乐 活动

The three tasks of typo-morphology are 识别 格物/分类法 description

* 辨认 声波 对象 that is isolating them cutting them into 声波 units

* Then classifying them into 基础 characteristic 种类

* Finally 描述 their 特征 in 细节

类型学 takes care of the first two 形态学 the third Paraphrase of Michel Chion 1983 Guide des Objets Sonores Eds Buchet/Chastel Paris 1995 translation by John Dack/Christine North