The software that processes lecture audio into a textual transcript is comprised of a series of scripts that marshall input files and parameters to a speech recognition engine. Interestingly, since the engine is data driven, its code seldom changes; improvements in performance and accuracy are achieved by refining the data it uses to perform its tasks.
There are two steps to produce the transcript. The first creates an audio file in the correct format for speech recognition. The second processes that audio file into the transcript.
