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Browsing by Author "Barnard, E"

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  • Schlunz, GI; Barnard, E; Van Huyssteen, GB (PRASA 2010, 2010-11)
    One of the goals of text-to-speech (TTS) systems is to produce natural-sounding synthesised speech. Towards this end various natural language processing (NLP) tasks are performed to model the prosodic aspects of the TTS ...
  • Coetzee, L; Barnard, E (PRASA 2004, 2004-11)
    This paper analyses a number of disabilities, their assistive devices and the associated technologies in order to highlight the role pattern recognition plays in enabling accessibility and improving human computer interaction ...
  • Van Niekerk, DR; Barnard, E; Schlunz, G (PRASA 2009, 2009-11)
    With the increasing prominence and maturity of corpus-based techniques for speech synthesis, the process of system development has in some ways been simplified considerably. However, the dependence on sufficient amounts ...
  • Van Niekerk, DR; Barnard, E (International Speech Communication Association (ISCA), 2009-09)
    The rapid development of concatenative speech synthesis systems in resource scarce languages requires an efficient and accurate solution with regard to automated phonetic alignment. However, in this context corpora are ...
  • Zerbian, S; Barnard, E (NISC, 2008)
    Much is already known about the prosodic systems of the indigenous South African languages from descriptions and analyses in the existing literature. All of the existing work has been carried out in the field of African ...
  • Peche, M; Davel, MH; Barnard, E (2007-08)
    The authors investigate the addition of a new language, for which limited resources are available, to a phonotactic language identification system. Two classes of approaches are studied: in the first class, only existing ...
  • Govender, N; Barnard, E; Davel, MH (Sabinet Online, 2007-06)
    Although the complexity of prosody is widely recognised, the lack of widely-accepted descriptive standards for prosodic phenomena has meant that prosodic systems for most of the languages of the world have, at best, been ...
  • Van Heerden, C; Kleynhans, N; Barnard, E; Davel, M (School of Computer Sciences, Universiti Sains Malaysia, 2010-05)
    We describe several experiments that were conducted to assess the viability of data pooling as a means to improve speech-recognition performance for under-resourced languages. Two groups of closely related languages from ...
  • Peche, M; Davel, M; Barnard, E (2008-11)
    A speech processing system is often required to perform in a different environment than the one for which it was initially developed. In such a case, data from the new environment may be more limited in quantity and of ...
  • Van Niekerk, DR; Barnard, E (Elsevier, 2013)
    Pitch is a fundamental acoustic feature of speech and as such needs to be determined during the process of speech synthesis. While a range of communicative functions are attributed to pitch variation in speech of all ...
  • Van Heerden, CJ; De Villiers, P; Barnard, E; Davel, MH (PRASA, 2011-11)
    Initial work towards processing Afrikaans spoken lectures in a resource-scarce environment is presented. Two approaches to acoustic modeling for eventual alignment are compared: (a) using a well-trained target-language ...
  • De Vries, NJ; Davel, MH; Badenhorst, J; Basson, WD; De Wet, Febe; Barnard, E; De Waal, A (Elsevier, 2014-01)
    Acoustic data collection for automatic speech recognition (ASR) purposes is a particularly challenging task when working with under resourced languages, many of which are found in the developing world. We provide a brief ...
  • Van Heerden, CJ; Barnard, E (18th Annual Symposium of the Pattern Recognition Association of South Africa (PRASA), 2007-11)
    The durations of phonemes varies for different speakers. To this end, the correlations between phonemes across different speakers are studied and a novel approach to predict unknown phoneme durations from the values of ...
  • Molapo, B; Barnard, E; De Wet, Febe (International Research Insitute, 2014-05)
    In this paper, we present an end-to-end solution to the development of an automatic speech recognition (ASR) system in typical under-resourced languages, where the target language is likely to be influenced by one more ...
  • Van Heerden, CJ; Barnard, E (2006-11)
    A novel approach to speech rate normalization is presented. Models are constructed to model the way in which speech rate variation of a specific speaker influences the duration of phonemes. The models are evaluated in two ...
  • Burger, CR; Barnard, E; Jones, T (IASSA, 2011-09)
    Airspace control is currently based largely on the exchange of speech between aircraft and Air Traffic Service Units, or between aircraft themselves. ICAO regulatory guidelines make no distinction between unmanned and ...
  • Barnard, E; Davel, MH; Van Huyssteen, GB (AAAI, 2010-03)
    Telephone-based information access has the potential to deliver a significant positive impact in the developing world. We discuss some of the most important issues that must be addressed in order to realize this potential, ...
  • Martirosian, O; Barnard, E (18th Annual Symposium of the Pattern Recognition Association of South Africa (PRASA), 2007-11)
    The authors explore the construction of a system to classify the dominant emotion in spoken utterances, in an environment where resources such as labelled utterances are scarce. The research addresses two issues relevant ...
  • Kleynhans, N; Barnard, E (PRASA 2013 Proceedings, 2013-12)
    Speech technologies have matured over the past few decades and have made significant impacts in a variety of fields, from assistive technologies to personal assistants. However, speech system development is a resource ...
  • Kuun, C; Zimu, V; Barnard, E; Davel, M (PRASA, 2005-11)
    We study the relationship between lexical tone and measured values of fundamental frequency for several word classes in isiZulu, based on objective measurements from recordings of three speakers. For nouns and adjectives, ...