mbrola in Orca

[Milton]

Hi,
I use Ubuntu 12.04 with Orca 3.4.2 and espeak. I tried the Dutch voice 
of Mbrola. In /etc/speech-dispatcher/speechd.conf I uncommand the line:
AddModule "espeak-mbrola-generic" "sd_generic" "espeak-mbrola-generic.conf"
So I could chose for mbrola in Orca. The settings of the volume, pitch 
and speed in Orca does not effect the mbrola voice. Do you know how to 
change the volume, pichtrate and speed for the mbrola voice? Thanks.
Milton