Technical Program

Paper Detail

Paper:SP-L8.3
Session:Acoustic Modeling: New Search Features and Supervised Training
Time:Friday, May 21, 10:10 - 10:30
Presentation: Lecture
Topic: Speech Processing: Acoustic Modeling for Speech Recognition
Title: JOINT DECODING FOR PHONEME-GRAPHEME CONTINUOUS SPEECH RECOGNITION
Authors: Mathew Magimai.-Doss; Dalle Molle Institute for Artificial Intelligence 
 Samy Bengio; Dalle Molle Institute for Artificial Intelligence 
 HervĂ© Bourlard; Dalle Molle Institute for Artificial Intelligence 
Abstract: Standard ASR systems typically use phoneme as the subwordunits. Preliminary studies have shown that the performance of the ASR system could be improved by using grapheme as additional subword units. In this paper, we investigate such a system where the word models are defined in terms of two different subword units, i.e.,phonemes and graphemes. During training, models for both the subword units are trained, and then during recognition either both or just one subword unit is used. We have studied this system for a continuous speech recognition task in American English language. Our studies show that grapheme information used along with phoneme information improves the performance of ASR.
 
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