English corpus of telephone speech consists of 120 unscripted
telephone conversations between native speakers of English.
All calls, which lasted up to 30 minutes, originated in North America;
90 of the 120 calls were placed to various locations overseas, while
the remaining 30 were placed within North America. Most participants
called family members or close friends.
This corpus contains speech data files ONLY, along with the minimal
amount of documentation needed to describe the contents and format of
the speech files and the software packages needed to uncompress the
speech data. The transcripts and documentation (LDC97T14) are
available separately, as is an associated lexicon (LDC97L20).
The "shorten" and "sphere" directories have been removed.
The sphere directory contained NIST "SPeech HEader REsources" (SPHERE):
C-language source code libraries and utilities for manipulating NIST
SPHERE-format waveform files.
The shorten directory contained files for Tony Robinson's "shorten"
software for speech compression.
A more recent version of the SPHERE utilities is now available on the
NIST web site; additional utilities for
converting from SPHERE to other waveform file formats is also available
at the LDC web site.
Portions © 1997 Trustees of the University of Pennsylvania