which speech database used with ISIP LVCSR System Tutorial?

[robert b <http://dummy.us.eu.org/robert>]

I'm trying to go through ISIP LVCSR System Tutorial on
http://www.isip.msstate.edu/projects/speech/software/tutorials/prototype/alphadigits/current/ ,
but I'm getting stuck on
http://www.isip.msstate.edu/projects/speech/software/tutorials/prototype/alphadigits/current/data_prep/feature_extraction.html
.  In particular, there's a file
(http://www.isip.msstate.edu/projects/speech/software/tutorials/prototype/alphadigits/current/data/raw_data.list)
which contains a list of WAV files, but I'm not sure which speech database it's referring to.

Does anyone know which speech database is being used in this tutorial?

Thanks.