• On the interaction between time and frequency filtering of speech parameters 

      Macho Ciena, Dusan; Nadeu Camprubí, Climent (Robert H. Mannel and Jordi Robert-Ribes, 1998)
      Text en actes de congrés
      Accés obert
      One of the great today's challenges in speech recognition is to ensure the robustness of the used speech representation. Usually, the recognition rate is strongly reduced when the speech is corrupted, e.g. by convolutional ...
    • Use of voicing information to improve the robustness of the spectral parameter set 

      Macho Ciena, Dusan; Nadeu Camprubí, Climent (ICSLP, 2000)
      Text en actes de congrés
      Accés obert
      Speech recognition systems that operate in real world environments have to be robust against additive noises. In this work, a technique that uses a voicing-dependent exponent in the computation of the filter-bank parameters ...