In addition, the Tuner stores all transcripts and evaluations within the call log. As transcripts are entered into the Speech Tuner, they are automatically evaluated against the decode grammar.

This transcript, and any notes or additional information, are stored directly into the database. Individual scores -- such as word error rate, semantic error rate, and in and out-of-grammar measurements -- are stored along with their alignments, as well as information about how the scores were reached. Users can generate a variety of reports from these results, including error rate by grammar or dialog, confusion matrices, transcription progress, and confidence thresholds for confirmation or rejection settings.

The Speech Tuner communicates with an open-source, freeware database called SQLite (www.sqlite.org). The Speech Tuner manages call log importing, searching, and exporting - so you can focus on the task of tuning, not log management. The database is contained in a single file, is easy to back up and transport, and can be queried using SQL-92 (see the SQLite web site for full details) from a variety of exterior tools.

The database maintains all the information contained in the original call log. The Speech Tuner includes not only the decode grammar and speech recognition software results, but also the decode platform, parameter settings, alternative results, prompt audio, and pre- and post-processed audio.

Loading a Database is easily achieved from the main Speech Tuner window: