Acoustic-Phonetic Approaches for Improving Segment-Based Speech Recognition for Large Vocabulary Continuous Speech

Acoustic-Phonetic Approaches for Improving Segment-Based Speech Recognition for Large Vocabulary Continuous Speech

Segment-based speech recognition has shown to be a competitive alternative to the state-of-theart HMM-based techniques. Its accuracies rely heavily on the quality of the segment graph from which the recognizer searches for the most likely recognition hypotheses. In order to increase the inclusion rate of actual segments in the graph, it is important to recover possible missing segments generate...

Elderly acoustic model for large vocabulary continuous speech recognition

In this paper, we evaluate elderly speaker acoustic models in LVCSR, which are trained by the 301 elderly speakers' database from the age of 60 to 90. Each speaker utters 200 sentences. The elderly speaker PTM (Phonetic Tied Mixture) acoustic model attains 88.9% word recognition rate, which is better than 86.0% word recognition rate by the usual adult (an average age of 28.6) PTM acoustic model...

Large Vocabulary Continuous Speech Recognition for Bulgarian

The paper presents the results of a project completed by the authors for realizing a continuous speech recognition system for Bulgarian. The state-of-the-art speech recognition technology used in the system is discussed. Special attention is given to the problems with some speci cs of the Bulgarian language namely the large vocabulary (450000 wordforms). Some implementation details of the langu...

Syllable-based large vocabulary continuous speech recognition

Most large vocabulary continuous speech recognition (LVCSR) systems in the past decade have used a context-dependent phone as the fundamental acoustic unit. In this paper, we present one of the first robust LVCSR systems that uses a syllable-level acoustic unit for LVCSR on telephone-bandwidth speech. This effort is motivated by the inherent limitations in phone-based approaches — namely the la...

Large Vocabulary Continuous Speech Recognition :