The 2004 BBN/LIMSI 20xRT English conversational telephone speech recognition system
Rohit Prasad, Spyros Matsoukas, C.-L. Kao, Zaremba Jeff, Dongyang Xu, Thomas Colthurst, Owen Kimball, Richard L. Schwartz, Jean‐Luc Gauvain, Lori F Lamel, Holger Schwenk, Gilles Adda, Florence Lefèvre · 2005
In this paper we describe the English Conversational Telephone Speech (CTS) recognition system jointly developed by BBN and LIMSI under the DARPA EARS program for the 2004 evalua-tion conducted by NIST. The 2004 BBN/LIMSI system achieved a word error rate (WER) of 13.5 % at 18.3xRT (real-time as mea-sured on Pentium 4 Xeon 3.4 GHz Processor) on the EARS progress test set. This translates into a 22.8 % relative improvement in WER over the 2003 BBN/LIMSI EARS evaluation system, which was run without any time constraints. In addition to reporting on the system architecture and the evaluation results, we also highlight the significant improvements made at both sites. 1.