Logba phonology

Logba has a nine vowel system with ATR vowel harmony. Vowel harmony in Logba is root-controlled, which means that the vowels of its nominal prefixes harmonize with the vowels of the root. Vowels are nasalized when they occur in the immediate environment of a nasal consonant.

Logba has a total of 23 consonants. A notable feature of Logba phonology is the opposition between bilabial and labio-dental fricatives, found in various other languages of the region, including Ewe. Logba is a tonal language with two level tones: High and Low. These tones can be combined on one syllable, yielding a Rising or Falling contour tone.

All syllables are open in Logba. Every syllable bears a tone. The basic syllable structure can be rendered as (C1)(C2)V+T, where C = consonant, V = vowel or syllabic nasal, and T = tone. Dorvlo (2004) distinguishes three types of syllables:
 * 1) Nucleus only, consisting of a vowel or a syllabic nasal. This type is found only in pronouns and nominal prefixes. Examples: ɛ́-mɔ́ 'they laughed'; ɔ́-zɔ́ 'he/she went'; n-dà 'liquor'.
 * 2) Onset and nucleus. This is the most common syllabe type in Logba; most words are of this form. In multisyllabic words, it can occur in all positions. Examples: bà ‘come’; gbà ‘sweep’; bìsí ‘cola nut’
 * 3) Complex onset and nucleus. Only /r/ and /l/ occur as the second consonant of the complex onset. This syllable type can also form a word by itself. In multisyllabic words, in can occur in all positions. Examples: à-klɔ́   ‘goat’; trò ‘refuse’; ìvàflí   ‘(thing) white’.