Sobre la historia del ensordecimiento final

Final devoicing in West Romance languages dates back to the Middle Ages. Written evidence attests to a stage in which grammatical words before their heads did not devoice: O.Fr. end avoir, Prov. aprob altre. Notwithstanding later language-specific processes, preservation of voicing in these specific contexts may be the ultimate reason for the voiced liaison s of French, Occitan, Catalan and Portuguese.