Faldo's anticipatory assimilation works well enough for me. There's a kind of assimilation at a distance in Hungarian and Turkish called vowel harmony, and there's even a Wikipedia entry for consonant harmony. In assimilation, the sound don't just change, it becomes more like one it's assimilating to. There's also dissimilation, where two sounds are alike, and one changes so as to be less alike. You see this in Romance languages where there might be two rs in a Latin word in adjacent syllables, and one dissimilates to an l. (I'll try to find an example later this evening.)

Ceci n'est pas un seing.