What is the Speech Dispatcher
This daemon provides speech synthesis. At the moment, it is only used by the Navit application and there is no dedicated application front-end, but a Mojo service and application will be developed in the future.
How does it work
The speech dispatcher is based on speechd. It accepts text via a sokect and/or C-API. This text is then sent sentence by sentence to a speech synthesizer. At the moment we have included espeak as the speech synthesizer.
Can my PDK app use this service
Yes it can. The C-Api is documented on the speechd home page => http://cvs.freebsoft.org/doc/speechd/speech-dispatcher.html#SEC42
The other way would be to use the spechd socked directly as doumented here => http://cvs.freebsoft.org/doc/speechd/ssip.html#Top
The default socket for the PalmPre is 'export SPEECHD_SOCKET=/tmp/speechd-sock'
Can my Mojo app use this service
Currently not. We plan to add a Mojo service to the Speech Dispatcher service, but that is not done right now. It will be documented here when it is available.