The structure of a synthesis system is described that uses prominence
as a central parameter. A definition of prominence suitable for this a
pplication is given. For the empirical foundation the reliability of p
rominence ratings by human listeners is assessed. These ratings were c
ompared with acoustic data on F-0 and duration. A linear relationship
between ratings and parameter values was found. Two algorithms to tran
sform prominence values to prosodic parameters are briefly described a
nd evaluated. The application of prominence to the synthesis of focal
accents is demonstrated. The results indicate the validity of the prom
inence based approach as an interface between linguistics and acoustic
s.