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Speech Recognition Using Energy, MFCCs and Rho Parameters to Classify Syllables in the Spanish Language

  • Sergio Suárez Guerra
  • José Luis Oropeza Rodríguez
  • Edgardo Manuel Felipe Riveron
  • Jesús Figueroa Nazuno
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4293)

Abstract

This paper presents an approach for the automatic speech re-cognition using syllabic units. Its segmentation is based on using the Short-Term Total Energy Function (STTEF) and the Energy Function of the High Frequency (ERO parameter) higher than 3,5 KHz of the speech signal. Training for the classification of the syllables is based on ten related Spanish language rules for syllable splitting. Recognition is based on a Continuous Density Hidden Markov Models and the bigram model language. The approach was tested using two voice corpus of natural speech, one constructed for researching in our laboratory (experimental) and the other one, the corpus Latino40 commonly used in speech researches. The use of ERO and MFCCs parameter increases speech recognition by 5.5% when compared with recognition using STTEF in discontinuous speech and improved more than 2% in continuous speech with three states. When the number of states is incremented to five, the recognition rate is improved proportionally to 98% for the discontinuous speech and to 81% for the continuous one.

Keywords

Speech Recognition Speech Signal Automatic Speech Recognition Spanish Language Continuous Speech 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Sergio Suárez Guerra
    • 1
  • José Luis Oropeza Rodríguez
    • 1
  • Edgardo Manuel Felipe Riveron
    • 1
  • Jesús Figueroa Nazuno
    • 1
  1. 1.Computing Research CenterNational Polytechnic InstituteMexico

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