Abstract. This document describes the speech recognizers submitted by Vocapia Research to the Evalita 2011 evaluation for the open unconstrained automatic speech recognition (ASR) task. The aim of this evaluation was to perform automatic speech recognition of parliament audio sessions in the Italian language. Two systems were submitted. The primary system has a single decoding pass and was optimized to run in real time. The contrastive system, developed in collaboration with LIMSI-CNRS, has two decoding passes and runs in about 5×RT. The case-insensitive word error rates (WER) of these systems on the Evalita development data are respectively 10.2% and 9.3%
