NOTE 1 – The word "articulation" is used when the units of speech material are meaningless syllables or fragments; the word "intelligibility' is used when the units of speech material are complete, meaningful words, phrases or sentences.

NOTE 2 – It is important to specify the type of speech material: phonemes, logatomes, syllables, words, sentences, etc. The kind of speech material used is identified by an appropriate adjective syllable articulation, vowel (or consonant) articulation, monosyllabic word intelligibility, discrete word intelligibility, sentence intelligibility.