Анализ на основния тон Fo при дългата гласна [i:] и при кратката гласна [I]

The movement of the basic tone Fo is considered by some phoneticians as a significant, though insufficiently investigated field which can account for native language interference and the presence of a foreign accent. The analysis aims at establishing the objective change of that quantity which is registered through its absolute values in the so-called long and short vowels. The object of analysis is a contrastive study of the data obtained from one and the same phonological material, pronounced by English and Bulgarian informants; the ultimate aim is to check M. Durand’s statement about the linguistic significance of the basic tone in the differentiation between the English long and short vowels.