#15 Allow setting speed of spaces/pauses between letters/words
Currently, there's only one speed change possible: the
speed of overall speaking. However, in normal human
speech (and I've noticed in my tests with freetts) it
can also be of benefit to pause longer between each
letter without slowing down the pronunciation of each
letter.
For example, currently freetts has the following
options if I wanted it to say "1-2-3-4":
one-two-three-four
or
oooonnnnneeee----twwwwwwooooo-----thrrrreeee----
foouuuurrrr
Whereas what I want is longer pauses between the
letters but NOT longer letters:
one-----two-----three-----four
This is currently impossible form what I can tell from
the API but would be VERY useful and is likely very
easy to implement.
If you don't have the time to implement this, please
at least reply to this request with where in the
source code I should start so I can implement this
(I'll send you the code if I get it to work).
