Browsing Faculty of Engineering by Title

Now showing items 192-211 of 2638

    • Automatic alignment and error detection for phonetic transcriptions in the African speech technology project databases 

      De Villiers, Edward (Stellenbosch : University of Stellenbosch, 2006-03)
      The African Speech Technology (AST) project ran from 2000 to 2004 and involved collecting speech data for five South African languages, transcribing the data and building automatic speech recognition systems in these ...

    • The automatic and unconstrained segmentation of speech into subword units 

      Van Vuuren, Van Zyl (Stellenbosch : Stellenbosch University, 2014-03)
      ENGLISH ABSTRACT: We develop and evaluate several algorithms that segment a speech signal into subword units without using phone or orthographic transcripts. These segmentation algorithms rely on a scoring function, termed ...

    • Automatic classification of spoken South African English variants using a transcription-less speech recognition approach 

      Du Toit, A. (Andre) (Stellenbosch : Stellenbosch University, 2004-03)
      ENGLISH ABSTRACT: We present the development of a pattern recognition system which is capable of classifying different Spoken Variants (SVs) of South African English (SAE) using a transcriptionless speech recognition ...

    • Automatic compensation for inaccuracies in quadrature mixers 

      Stormyrbakken, Christer (Stellenbosch : University of Stellenbosch, 2005-12)
      In an ideal software defined radio (SDR), all parameters are defined in software, which means the radio can be reconfigured to handle any communications standard. A major technical challenge that needs to be overcome ...

    • Automatic control of commercial airliners in formation flight 

      Buchner, Denzil (Stellenbosch : Stellenbosch University, 2015-03)
      ENGLISH ABSTRACT: This thesis presents research contributing towards the automatic control of formation flight for commercial airliners. The motivation behind this research is to ultimately reduce fuel consumption of ...

    • Automatic flight envelope recovery for large transport aircraft 

      Engelbrecht, Jacobus Adriaan Albertus (Stellenbosch : Stellenbosch University, 2016-12)
      ENGLISH ABSTRACT: This thesis presents the design of an automatic flight envelope recovery system for large transport aircraft. The flight envelope of the aircraft is conceptualised to consist of the aerodynamic envelope, ...

    • Automatic music transcription : an exploratory study 

      Matthaei, Peter E (Stellenbosch : Stellenbosch University, 2004-04)
      ENGLISH ABSTRACT: In a pioneering project for the University of Stellenbosch, and indeed South Africa, an automatic music transcription system was designed to explore the underlying theory, concepts and problematies of ...

    • Automatic oral proficiency assessment of second language speakers of South African English 

      Muller, Pieter F.de V. (Stellenbosch : University of Stellenbosch, 2010-03)
      ENGLISH ABSTRACT: The assessment of oral proficiency forms an important part of learning a second language. However, the manual assessment of oral proficiency is a labour intensive task requiring specific expertise. An ...

    • Automatic phoneme recognition of South African English 

      Engelbrecht, Herman Arnold (Stellenbosch : Stellenbosch University, 2004-03)
      ENGLISH ABSTRACT: Automatic speech recognition applications have been developed for many languages in other countries but not much research has been conducted on developing Human Language Technology (HLT) for S.A. ...

    • Automatic positioner and control system for a motorized parabolic solar reflector 

      Prinsloo, Gerhardus Johannes (Stellenbosch : Stellenbosch University, 2014-12)
      ENGLISH ABSTRACT: Most rural African villages enjoy high levels of sunlight, but rolling out solar power generation technology to tap into this renewable energy resource at remote rural sites in Africa pose a number of ...

    • Automatic syllabification of untranscribed speech 

      Nel, Pieter Willem (Stellenbosch : Stellenbosch University, 2005-03)
      ENGLISH ABSTRACT: The syllable has been proposed as a unit of automatic speech recognition due to its strong links with human speech production and perception. Recently, it has been proved that incorporating information ...

    • Automating a labour performance measurement and risk assessment: an evaluation of methods for a computer vision based system 

      Van Blommestein, Donald Lloyd (Stellenbosch : Stellenbosch University, 2014-04)
      ENGLISH ABSTRACT: This thesis brings together productivity and risk assessments through innovative design, development and evaluation of a unique system for retrieving and analysing data. In the past, although the link ...

    • Automation and navigation of a terrestrial vehicle 

      Visser, Wynand (Stellenbosch : Stellenbosch University, 2012-03)
      ENGLISH ABSTRACT: This thesis presents the design and implementation of an autonomous navigational system and the automation of a practical demonstrator vehicle. It validates the proposed navigation architecture using ...

    • An automotive interior lighting application using white light-emitting diodes 

      Solomon, Ramzi; Pillay, P.; Sebitosi, A.B. (Cape Town : Cape Town University, 2008)
      Energy drives technological societies. Developing countries such as South Africa are caught between the desperate need for economic growth and the emerging obligations to the environment. Efficient technologies can be ...

    • Autonomous aerobatic flight of a fixed wing unmanned aerial vehicle 

      Hough, Willem J. (Stellenbosch : University of Stellenbosch, 2007-03)
      This thesis relates to the successful development of a flight control system to perform a range of aerobatic manoeuvres autonomously. The project is the first to try to extend the flight control capabilities of the ...

    • Autonomous air-to-air refueling : a comparison of control strategies 

      Venter, Jeanne Marie (Stellenbosch : Stellenbosch University, 2012-03)
      ENGLISH ABSTRACT: The air-to-air refuelling of large aircraft presents challenges such as a long fuel transfer time, slow aircraft responses and a large distance between the aircraft CG and the receptacle position. This ...

    • Autonomous airborne refueling : relative state estimation 

      Runhaar, Anton Johan (Stellenbosch : Stellenbosch University, 2011-12)
      ENGLISH ABSTRACT: This thesis presents the development of a state estimation system for use in an Autonomous Airborne Refueling (AAR) operation through the simulated implementation of GPS, monocular and stereoscopic ...

    • Autonomous auscultation of the human heart 

      Botha, J. S. F. (Stellenbosch : University of Stellenbosch, 2010-03)
      ENGLISH ABSTRACT: The research presented in this thesis serves to provide a tool to autonomously screen for cardiovascular disease in the rural areas of Africa. Vital information thus obtained from patients can be ...

    • Autonomous docking for a satellite pair using monocular vision 

      Mienie, Dewald (Stellenbosch : University of Stellenbosch, 2009-03)
      Autonomous rendezvouz and docking is seen as an enabling technology. It allows, among others, the construction of larger space platforms in-orbit and also provides a means for the in-orbit servicing of space vehicles. In ...

    • Autonomous flight control system for an airship 

      Avenant, Gerrit Christiaan (Stellenbosch : University of Stellenbosch, 2010-03)
      ENGLISH ABSTRACT: In recent years, the use of airships has become popular for observation purposes since they provide a cost effective alternative to other aircraft. For this project a lateral and longitudinal flight ...