The affricate (/t1-d^/) failed to voice in almost 40% of the cases and the labiodental (/f-v/) yielded the lowest voicing scores (33%).
I coded for place of articulation of preceding segment with bilabial, dental 0 labiodental, alveolar, palatal, and velar.
Subjects differed mainly in the degree of voicing they exhibited with the labiodental fricative and the palato-alveolar affricate. 10.
The existence of labiodental fricatives =f= and =v= can be seen as a perceptual obstacle for lenition of both bilabial and dental stops.
Gesture economy, on the other hand, predicts no interaction in such cases, since bilabial and labiodental sounds involve different gestures.
One way of comparing the two approaches, then, is to examine possible interactions between bilabial and labiodental sounds, and between fricatives at different places of articulation.
She reports that the majority of fronted tokens were preceded by alveolar consonants, while those preceded by labials, labiodentals, velars and, particularly, laterals produced more back allophones.
On the other hand, as apparent from citations in the preceding discussion, no commentator seems entirely convinced that the distinction was one between bilabial and labiodental articulation.
