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Browsing Human language technologies by Title

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  • Joubert, G; Barnard, E (PRASA, 2005-11)
    The authors describe a system, based on open-source tools, that was developed in order to study the effect of network degenerations in Voice-over-Internet-Protocol applications on speech-recognition accuracy. Sophisticated ...
  • Mokgonyane, TB; Sefara, Tshephisho J; Manamela, MJ; Modipa, TI; Masekwameng, MS (IEEE, 2020-08)
    Automatic speaker recognition is the task of automatically determining or verifying the identity of a speaker from a recording of his or her speech sample and has been studied for many decades. One of the most important ...
  • Mokgonyane, TB; Sefara, Tshephisho J; Manamela, MJ; Modipa, TI (IEEE, 2019-08)
    Speaker recognition is a technique that automatically identifies a speaker from a recording of their speech utterance. Speaker recognition technologies are taking a new direction due to rapid progress in artificial ...
  • Sefara, Tshephisho J (2019-11)
    Speech emotion recognition systems require features to be extracted from the speech signal. These features include Time, Frequency, and Cepstral-domain features. To normalise features, it is a challenging task to select ...
  • Kleynhans, NT; Barnard, E (Springer Verlag, 2014-10)
    Automatic speech recognition (ASR) technology has matured over the past few decades and has made significant impacts in a variety of fields, from assistive technologies to commercial products. However, ASR system development ...
  • Davel, MH; Barnard, E (2004-10)
    Bootstrapping techniques have significant potential for the efficient generation of linguistic resources such as electronic pronunciation dictionaries. The authors describe a system and an approach to bootstrapping for the ...
  • Davel, MH; Barnard, E (2004-10)
    The authors focus on factors related to the underlying rule-extraction algorithms, and demonstrate variants of the Dynamically Expanding Context algorithm, which are beneficial for this application. They show that continuous ...
  • Davel, MH; Van Heerden, C; Kleynhans, N; Barnard, E (The International Speech Communication Association, 2011-08)
    Spoken recordings that have been transcribed for human reading (e.g. as captions for audiovisual material, or to provide alternative modes of access to recordings) are widely available in many languages. Such recordings ...
  • Davel, M; Barnard, E (2006-11)
    When developing a language resource, there is generally a trade-off between the amount of effort invested in the resource creation process and the quality of the resulting resource. We (authors) argue that, in the developing ...
  • Raborife, M; Zaerbain, S; Ewert, S (2012-05)
    This paper discusses the empirical assessments employed on two versions of a Sesotho tone labeling algorithm. This algorithm uses linguistically-defined Sesotho tonal rules to predict the tone labels on the syllables of ...
  • Martirosian, O; Davel, M (18th Annual Symposium of the Pattern Recognition Association of South Africa (PRASA 2007), 2007-11)
    The authors explore pattern recognition techniques for verifying the correctness of a pronunciation lexicon, focusing on techniques that require limited human interaction. They evaluate the British English Example Pronunciation ...
  • Gumede, T; Plauche, M; Sharma, Ameeth (CSIR, 2008-11)
    The authors describe sociological fieldwork conducted in the autumn of 2008 in two rural communities of South Africa. Tshidilamalomo, in North West Province, and Kgautswane, in Limpopo Province. The goal of the fieldwork ...
  • De Waal, A; Barnard, E (PRASA 2008, 2008-11)
    Topic models are unsupervised techniques that extract likely topics from text corpora, by creating probabilistic word-topic and topic-document associations. Evaluation of topic models is a challenge because (a) topic models ...
  • Van Niekerk, DR (PRASA, 2011-11)
    The quality of corpus-based text-to-speech (TTS) systems depends on the accuracy of phonetic annotation (alignments) which directly influences the process of acoustic modelling. In this paper the author discusses the rapid ...
  • Pretorius, L; Bosch, S (Association for Computational Linguistics, 2009-03)
    This paper investigates the possibilities that cross-linguistic similarities and dissimilarities between related languages offer in terms of bootstrapping a morphological analyser. In this case an existing Zulu morphological ...
  • Loots, L; De Wet, Febe; Niesler, T (PRASA, 2010-11)
    In this study we explore the extension of a small Afrikaans pronunciation dictionary by applying phoneme-tophoneme (P2P) and grapheme-and-phoneme-to-phoneme (GP2P) conversion to an existing and more extensive Dutch ...
  • Davel, M; Barnard, E (2006-04)
    Various automated techniques can be used to generalise from phonemic lexicons through the extraction of grapheme-to-phoneme rule sets. These techniques are particularly useful when developing pronunciation models for ...
  • Botha, GR; Barnard, E (18th Annual Symposium of the Pattern Recognition Association of South Africa (PRASA), 2007-11)
    The authors investigate the factors that determine the performance of text-based language identification, with a particular focus on the 11 official languages of South Africa, using n-gram statistics as features for ...
  • Ndwe, TJ; Dlodlo, ME; Kuun, C; Sharma, Aditi (2008)
    The OpenPhone system is a health information system that is developed to cater for the information needs of caregivers who are caring for HIV/AIDS infected children in Botswana, southern Africa. The system is accessible ...
  • Ngassam, EK; Watson, BW; Kourie, DG (2010-08)
    With this poster, the authors on the denotational semantics of algorithms to suggest an abstraction of a string recognizer. The abstraction provides a unified formalism for representing FA-based string recognizers as an ...

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