ABSTRACT
As we have emphasized in chapter 1 we understand phonetic features as certain sets of elementary segments. Hence, it is quite obvious that these features do not pertain to compound segments. Consequently, if we wish to speak about features of unit-length segments, we must use another, more general, notion of a phonetic feature. To this end we introduce the notion of a compound feature. Obviously, the compound features are also understood as sets, namely, sets of unit-length segments. The notion of a compound feature is precisely defined below in 10.3. The first two definitions introduce only certain convenient abbreviations.
