Title :
Digital filter interpolation of decoded LSFs for distributed continuous speech recognition
Author :
de Alencar, V.F.S. ; Alcaim, A.
Author_Institution :
Centre for Telecommun. Studies, Catholic Univ., Rio de Janeiro
Abstract :
A digital filter interpolation of decoded line spectral frequencies (LSFs) that significantly outperforms linear interpolation for large vocabulary distributed continuous speech recognition systems is presented. Experiments were conducted using linear predictive coding (LPC) and LSF-derived speech recognition features, CDHMM acoustic models, triphone units and trigram language models for Brazilian Portuguese.
Keywords :
decoding; digital filters; linear predictive coding; speech recognition; acoustic models; decoded line spectral frequencies; digital filter interpolation; linear interpolation; linear predictive coding; speech recognition features; trigram language models; triphone units; vocabulary distributed continuous speech recognition;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20089650
