Now showing items 1-20 of 23

  • Demisyllable-based HMM spotting for continuous speech recognition 

    Lleida Solano, Eduardo; Nadeu Camprubí, Climent; Mariño Acebal, José Bernardo; Salavedra Molí, Josep (Institute of Electrical and Electronics Engineers (IEEE), 1991)
    Conference report
    Open Access
    The authors describe the acoustic processor of a Spanish continuous speech recognition system based on demisyllable units. The acoustic processor is based on a spotting algorithm which takes as input the unknown utterance, ...
  • Demisyllable based Spanish Number Recognition Experiments 

    Mariño Acebal, José Bernardo; Nadeu Camprubí, Climent; Lleida Solano, Eduardo (1987)
    Conference report
    Open Access
    The main features of our demisyllable based continuous speech recognition system (RAMSES) are showed. Special attention is paid to demisyllable definition and the syntactic constraints used with the dynamic programming ...
  • Feature selection through orthogonal expansion in isolated word recognition 

    Lleida Solano, Eduardo; Mariño Acebal, José Bernardo (1989)
    Conference report
    Open Access
    The use of an orthogonal expansion for feature selection and data compression in isolated word recognition is presented. Assuming that the spectral evolution, given by a LPC analysis, is a noisy measure in the sense that ...
  • Finite State Grammar inference for connected word recognition 

    Mariño Acebal, José Bernardo; Nadeu Camprubí, Climent; Lleida Solano, Eduardo (1988)
    Conference report
    Open Access
    An algorithm that infers a finite state grammar from a language specified by simple erumeration of legal phrases , is introduced. The algorithm processes every phrase as a string of phonetic units (words, syllables, ...
  • Frame reduction in LPC isolated word recognition 

    Nadeu Camprubí, Climent; Lleida Solano, Eduardo; Mariño Acebal, José Bernardo (1986)
    Conference report
    Open Access
    It is well know that the pattern matching approach to word-based recognition yields good results when the time aligriment is carried out by means of dynamic programming. However, the high computational expenditure needed ...
  • New Backpropagation Algorithm Using Quadratic Potential Functions, and an Experiment on Isolated Word Recognition 

    Monte Moreno, Enrique; Lleida Solano, Eduardo; Mariño Acebal, José Bernardo (1989)
    Conference report
    Open Access
    This paper presents a new algorithm to train multilayered perceptrons, using quadratical potential functions. This new algorithm is compared in an isolated word recognition task, with the back propagation algorithm that ...
  • On the cramer-rao bound of finite-length cepstrum spectral estimators 

    Nadeu Camprubí, Climent; Lleida Solano, Eduardo (Institution of Electrical Engineers, 1990-07)
    Article
    Open Access
  • Out-of-vocabulary word modelling and rejection for keyword spotting 

    Lleida Solano, Eduardo; Mariño, José B.; Salavedra Molí, Josep; Bonafonte Cávez, Antonio; Monte Moreno, Enrique (International Speech Communication Association (ISCA), 1993)
    Conference report
    Restricted access - publisher's policy
    This paper presents a combination of out-of-vocabulary (OOV) word modeling and rejection techniques in an attempt to accept utterances embedding a keyword and reject utterances with nonkeywords. The goal of this research ...
  • Principal and discriminant component analysis for feature selection in isolated word recognition 

    Lleida Solano, Eduardo; Nadeu Camprubí, Climent (1990)
    Conference report
    Open Access
  • Procesador acustico de palabras basado en la tecnica de "word spotting" para el reconocimiento del habla continua 

    Lleida Solano, Eduardo; Nadeu Camprubí, Climent; Mariño Acebal, José Bernardo (1991)
    Conference report
    Open Access
    This paper describes the acoustic processor of a Spanish Continuous Speech Recognition System based on HMM Demisyllable units. The acoustic processor produces a lattice of word hypotheses suitable to be parsed by a linguistic ...
  • Ramses: a Spanish demisyllable based continuous speech recognition system 

    Mariño Acebal, José Bernardo; Nadeu Camprubí, Climent; Lleida Solano, Eduardo; Monte Moreno, Enrique; Moreno Bilbao, M. Asunción (Springer, 1990)
    Conference report
    Open Access
    A continuous speech recognition system (called RAMSES) has been built based on the demisyllable as phonetic unit and tools from connected speech recognition. Speech is parameterized by band-pass lifted LPC-cepstra and ...
  • Recognition of numbers by using demisyllables and hidden Markov models 

    Mariño Acebal, José Bernardo; Bonafonte Cávez, Antonio; Moreno Bilbao, M. Asunción; Lleida Solano, Eduardo; Nadeu Camprubí, Climent; Monte Moreno, Enrique (Elsevier, 1990)
    Conference report
    Open Access
  • Reconocimiento del habla continua mediante modelos ocultos de Markov utilizando la técnica de búsqueda en haz 

    Lleida Solano, Eduardo; Mariño Acebal, José Bernardo; Bonafonte Cávez, Antonio (Universidad de Málaga, 1992)
    Conference report
    Open Access
  • Reconocimiento del habla mediante semisílabas 

    Bofill, Pau; Lleida Solano, Eduardo; Mariño Acebal, José Bernardo (Consejo Superior de Investigaciones Científicas (CSIC), 1986)
    Conference report
    Open Access
    In this paper we describe the use of demisyllables as reference units in a speaker-dependent connected speech recognition system using template matching techniques. Without explicitly segmenting the input utterance, the ...
  • Reconocimiento de los números castellanos mediante semisílabas 

    Mariño Acebal, José Bernardo; Nadeu Camprubí, Climent; Moreno, Antonio; Lleida Solano, Eduardo; Hernaez, I.; Monte Moreno, Enrique (1989-12)
    Article
    Open Access
    En esta comunicación se describe el uso de la semisílaba en el reconocimiento de habla continua para una aplicación específica: el reconocimiento de los números enteros castellanos del cero al mil. Tras una breve descripción ...
  • Selección de caracterísitcas en el reconocimiento automático del habla 

    Lleida Solano, Eduardo; Nadeu Camprubí, Climent; Mariño Acebal, José Bernardo (1990)
    Conference report
    Open Access
    In this paper we investigate the use of a feature selection step in a isolated word recognition system. The feature selection step tries lo modal the correlalion among dajacent feature vectors and the variabilily of the ...
  • Specific distance for feature selection in speech recognition 

    Lleida Solano, Eduardo; Nadeu Camprubí, Climent; Mariño Acebal, José Bernardo; Monte Moreno, Enrique; Moreno Bilbao, M. Asunción (Springer, 1990)
    Conference report
    Open Access
    In this paper, the use of a specific metric as a feature selection step is investigated. The feature selection step tries to model the correlation among adjacent feature vectors and the variability of the speech. We propose ...
  • Speech Parametrization and Recognition Using Block and Recursive Linear Prediction with Data Compression 

    Lleida Solano, Eduardo; Nadeu Camprubí, Climent; Mariño Acebal, José Bernardo (1987)
    Conference report
    Open Access
    Results of experiments studying the use of LPC techniques in feature measurement and the posterior application of a fixed length frame compression technique in a isolated word recognition system are presented. The LPC ...
  • Statistical feature selection for isolated word recognition 

    Lleida Solano, Eduardo; Nadeu Camprubí, Climent; Monte Moreno, Enrique; Mariño Acebal, José Bernardo (1990)
    Conference report
    Open Access
  • Telemaco-a real time keyword spotting application for voice dialing 

    Lleida Solano, Eduardo; Mariño Acebal, José Bernardo (International Speech Communication Association (ISCA), 1993)
    Conference report
    Open Access
    The problem of detecting a given set of words in fluent speech is one of the most interesting topics in speech recognition for practical real time applications. This paper present the TELEMACO system for automatic voice ...