[PD] Vocal synthesis controlled by Pd

[João Pais]

Hello list,

I'm looking around, does anyone have a suggestion for a vocal synthesis  
software that can be controlled by Pd? (either by direct or less-direct  
means such as through a console)
The purpose would be to produce a realistic output of some texts typed in  
Pd, hopefully in different pronunciations and languages.

Ideally a solution that would work in any OS would be good, but preferably  
for unix or osX.

Best,

jmmmp