It is now agreed as a standard for SAM speech databases, that a speech file contains only speech waveforms, and that an associated description file is generated at the recording session. Thus the files are matched, their names being identical, except for the last letter of the extension.
For example, if the speaker AA records the corpus number BB (list of six sentences in English), and the current available file number in the recording lab is nnnn, the files produced will be:
|(AABBnnnn.SEL||L for Laryngograph)|
|(AABBnnnn.SE2||for the second channel signal file)|
|AABBnnnn.SEO||associated description file generated automatically during recording.|
|(O = orthographic time-aligned labelling)|