GENERAL ENQUIRIES: Tel: + 27 12 841 2911 | Email: callcentre@csir.co.za

Browsing by Author "Barnard, E"

Sort by: Order: Results:

  • Naidoo, S; Barnard, E (ALASA 2005, 2005-07)
    Telephone-based information services hold tremendous potential as a means of information access in the developing world. However,surprisingly little research has been done on the design of such systems - whether basic ...
  • Botha, G; Zimu, V; Barnard, E (2006-11)
    The authors investigate the performance of text-based language identification systems on the 11 official languages of South Africa, when n-gram statistics are used as features for classification. In particular, the authors ...
  • Van Niekerk, D; Barnard, E (2012-05)
    The authors investigate the acoustic realisation of tone in short continuous utterances in Yoruba. Fundamental frequency contours are extracted for automatically aligned syllables from a speech corpus of 33 speakers collected ...
  • Barnard, E; Cloete, L; Patel, Hina M; Coetzee, L (2003-09)
    Government regulations have combined with a tremendous growth in prepaid cellular telephony to bring telephone connectivity to an unprecedented number of South African citizens – thus creating an ideal platform for delivering ...
  • Van Heerden, CJ; Barnard, E (PRASA 2010, 2010-11)
    In this article, the authors investigate the relationship between SVM hyperparameters for linear and RBF kernels and classification accuracy. The process of finding SVM hyperparameters usually involves a gridsearch, which ...
  • Badenhorst, J; Davel, MH; Barnard, E (PRASA, 2011-11)
    The authors propose a piecewise-linear model for the temporal trajectories of Mel Frequency Cepstral Coefficients during phone transitions. As with conventional Hidden Markov Models, the parameters of the model can be ...
  • Botha, G; Barnard, E (PRASA, 2005-11)
    Many applications of pattern recognition to natural language processing require large text corpora in a specified language. For many of the languages of the world, such corpora are not readily available, but significant ...
  • Kleynhans, N; De Wet, Febe; Barnard, E (IEEE, 2015-11)
    Large amounts of untranscribed audio data are generated every day. These audio resources can be used to develop robust acoustic models that can be used in a variety of speech-based systems. Manually transcribing this data ...
  • Van Heerden, CJ; Barnard, E (PRASA, 2005-11)
    This paper presents an analysis of temporal information as a feature for use in speaker verification systems. The relevance of temporal information in a speaker’s utterances is investigated, both with regard to improving ...
  • Barnard, E; Plauche, M; Davel, M (IEEE, 2008-12)
    The commercial successes of spoken dialog systems in the developed world provide encouragement for their use in the developing world, where speech could play a role in the dissemination of relevant information in local ...
  • Barnard, E; Schalkwyk, J; Van Heerden, C; Moreno, PJ (International Speech Communication Association (ISCA), 2010-09)
    In light of the serious problems with both illiteracy and information access in the developing world, there is a widespread belief that speech technology can play a significant role in improving the quality of life of ...
  • Sharma Grover, AS; Calteaux, K; Barnard, E; Van Huyssteen, G (Association for Computing Machinery (ACM), 2012-03)
    Research using voice-based services as a technology platform for providing information access and services within developing world regions has shown much promise. The results for design and deployment of such voice-based ...
  • Barnard, E; Wissing, D (NISC, 2008)
    For the development of Human Language Technologies such as automatic speech recognition systems or text-to-speech systems, exact acoustic and phonological information of the language in question is essential. In the case ...
  • De Vries, NJ; Badenhorst, J; Davel, MH; Barnard, E; De Waal, A (Conference paper, 2011-08)
    Building transcribed speech corpora for under-resourced languages plays a pivotal role in developing speech technologies for such languages. The authors have developed an open-source tool for devices running the Android ...