In this pdf:
http://www.sof2go.com/forumdata/Real...eSequences.pdf
Code:
<ESC>Wx : Setting a wait period between all succeed
ing message units
This control sequence generates additional pauses i
n between different Text-To-Speech essage
units.
Range (x) : 0..9
0 no additional pause
1 200 milliseconds
9 1800 milliseconds
Default: 2
This works for single chars
Code:
echo $'\033W4 hello' > /tmp/ttsUSFifo
Thanks for the hint.