The 2011 KIT QUAERO Speech-to-Text System for Spanish
Kevin Kilgour, Christian Saam, Mohr, Christian, Stüker, Sebastian, Waibel, Alex · KITopen · 2011
This paper describes our current Spanish speech-to-text (STT) system with which we participated in the 2011 Quaero STT evaluation that is being developed within the Quaero program. The system consists of 4 separate subsystems, as well as the standard MFCC and MVDR phoneme based subsystems we included a both a phoneme and grapheme based bottleneck subsystem. We carefully evaluate the performance of each subsystem. After including several new techniques we were able to reduce the WER by over 30% from 20.79% to 14.53%.