[texhax] Reading file by machines

[hh]

Hello,

at the moment - the german book fair was certainly a suitable 
propagation place - machines are offered for reading books on a 
screen. 

But what happens if someone wants to "hear" the book? If the machine  
can't do it now, in the future they will quite certainly be able to 
do that.

But what happens with scientific books? If you have something which 
appears printed as "320 kJ/kmol" or 1°C, how that will be read?

I'm aware that packages like "siunitx" might be the source of a 
solution as - when using them - you have to write 
"\SI{320}{\kilojoule\per\kilomole}" or \SI1\degreecelsius. Which in 
of course seems much more suitable to be transformed in some kind of 
voice readable (unvisible) text.

Question: Was anything done already to make the voice reading (by 
machine) of scientific text to a person more easy? Is there any 
information available? Or is this too far for TeX?

With regards
hh