  We introduce two rule-based models to modify the prosody of speech synthesis
in order to modulate the emotion to be expressed. The prosody modulation is
based on speech synthesis markup language (SSML) and can be used with any
commercial speech synthesizer. The models as well as the optimization result
are evaluated against human emotion annotations. Results indicate that with a
very simple method both dimensions arousal (.76 UAR) and valence (.43 UAR) can
be simulated.
