|LDC93S6A - Complete CSR-I corpus |
LDC93S6B - CSR-I Sennheiser speech
LDC93S6C - CSR-I other speech
During 1991, the DARPA Spoken Language Program initiated efforts to
build a new corpus to support research on large-vocabulary Continuous
Speech Recognition (CSR) systems.
The first two CSR Corpora consist primarily of read speech with texts
drawn from a machine-readable corpus of Wall Street Journal news text and
are thus often known as WSJ0 and WSJ1. (Later sections of the CSR set
of corpora, however, will consist of read texts from other sources of
North American business news and eventually from other news domains).
The texts to be read were selected to fall within either a 5,000-word
or a 20,000-word subset of the WSJ text corpus. (See the
documentation for details). Some spontaneous dictation is included in
addition to the read speech. The dictation portion was collected
using journalists who dictated hypothetical news articles.
Two microphones are used throughout: a close-talking Sennheiser HMD414
and a secondary microphone, which may vary. The corpora are thus
offered in three configurations: the speech from the Sennheiser, the
speech from the other microphone and the speech from both; all three
sets include all transcriptions, tests, documentation, etc.
In general, transcriptions of the speech, test data from ARPA
evaluations, scores achieved by various speech recognition systems
and software used in scoring are included on separate discs from the
Portions © 1987-1989 Dow Jones & Company, Inc., © 1992, 1993 Trustees of the University of Pennsylvania