Figure 1.

Example of the coding system. The top tier was used to mark the point vowels. The edges of the frications of the sibilants were marked in the second tier, while on the third tier it was noted whether there was a vowel preceding and∕or following the sibilant, in order to extract formants only in the case when there was a vowel. The fourth tier was used for comments. In the fifth tier, the number of syllables in the sentence was noted, while the sixth encoded the register (in this case, “i,” for IDS).