Speaker Recognition Corpus
                            Release 1.1

              Center for Spoken Language Understanding


UPDATED: 29 March 2002


This document describes the file naming conventions used
for this distribution and gives a brief description of the
various file formats used.

File Naming Convention
----------------------
Each filename in /speech and /trans directories encodes
information about the call number, utterance type, and file
type.  A typical filename will look like:

	00381aa1.wav

The first four digits of the file name identify the caller.
The fifth digit represents the session number during which
the utterance was recorded. The two letters are a symbol
indicating the prompt given the caller. The final number is
the occurrence of the utterance for the session (some
utterances were generated more than once per session)
The final three-letter extension indicates the file type.
The following types are in this distribution:

  wav		The speech data
  txt		The text-based transcription of 
                the speech data

File Formats
------------
The "wav" files contain speech data and use the RIFF
standard file format. This file format is 16-bit linearly
encoded.

The "trans" file in the /docs directory is a list of all of
the non-time-aligned word-level transcriptions (which
comply with the conventions in the CSLU Labeling Guide).

Each file transcription is on a separate line.  Each line
Is divided into several fields:

* an individual identification number for the caller
* the session number during which the utterance was
recorded
* a symbol representing the prompt given the caller
* the occurrence of the utterance for the session (some 
  utterances were generated more than once per session)
* the gender of the caller
* the approximate age range of the caller
* an internal code
* the actual transcription of the utterance

FOR THIS VERSION OF THE CORPUS, THE CONTENTS OF THE
TRANS.TXT FILE HAVE BEEN EXTRACTED INDIVIDUALLY INTO THE
/TRANS DIRECTORY. The /trans directory file structure
exactly parallels the structure of the /speech directory.
Each file in the /trans directory is in .txt format
and contains a line, as described in the previous 
paragraph, that uniquely defines each corresponding sound
file.