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Browsing by Author "Mashao, Daniel"

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An artificial Intelligence Approach to improving Speech Recognition

Author: Lopes, Luis Ramos dos Santos Date: 2009 Speech Recognition is a technology with promising applications. However, the performance of current speech recognizers greatly limit their widespread use. Approaches to reducing the word error rate have mainly been associated with statistical ... Read more
A comparison of features for large population speaker identification

Author: Baloyi, Norman Tinyiko Date: 2000 Speech recognition systems all have one criterion in common; they perform better in a controlled environment using clean speech. Though performance can be excellent, even exceeding human capabilities for clean speech, systems fail when presented ... Read more
A comparison of the network speech recognition and distributed speech recognition systems and their effect on speech enabling mobile devices

Author: Isaacs, Dale Date: 2010 Over the past 10 years there has been an exponential increase in the number of mobile subscribers worldwide. Market research has shown that the number of mobile subscribers rose to 4.3 billion towards end of Q1 in 2009. The unprecedented ... Read more
Design of an advanced and fluent Sesotho text-to-speech system through intonation

Author: Mohasi, Lehlohonolo Date: 2006 Includes bibliographical references (leaves 97-101). Read more
Design of an advanced Text-To-Speech system for Afrikaans

Author: Rousseau, Francois Date: 2006 Afrikaans is the home language to approximately six million people in South Africa. The need for an Afrikaans TTS system comes with the growing interest in integrating speech technology in all eleven languages of the country. The ultimate ... Read more
Dynamic bandwidth allocation in ATM networks

Author: Ashibani, Majdi Ali Atoomi Date: 2002 This thesis investigates bandwidth allocation methodologies to transport new emerging bursty traffic types in ATM networks. However, existing ATM traffic management solutions are not readily able to handle the inevitable problem of congestion ... Read more
Evaluating microphone arrays for a speaker identification task

Author: Zulu, Nicholas ; Mashao, Daniel Date: 2004 Abstract—Microphone array systems have been an area of active research for several years. The potential for high quality hands-free speech acquisition in noisy and reflecting environments makes microphone arrays an attractive alternative to ... Read more
Evaluation of speaker adaptation algorithms for public access IVR server

Author: Noah, O P Date: 2006 IVR servers are telephony-based applications that allow a user to interact with a series of menus in order to retrieve information. For many years users have commonly used key pads to interact with IVR servers. As a result users have experiences ... Read more
Histogram equalization for robust text-independent speaker verification in telephone environments

Author: Skosan, Marshalleno Date: 2005 Word processed copy. Includes bibliographical references. Read more
Implementation and evaluation of a low complexity microphone array for speaker recognition

Author: Zulu, Peleira Nicholas Date: 2005 This thesis discusses the application of a microphone array employing a noise canceling beamforming technique for improving the robustness of speaker recognition systems in a diffuse noise field. Read more
Increased diphone recognition for an Afrikaans TTS system

Author: Rousseau, Francois ; Mashao, Daniel Date: 2004 In this paper we discuss the implementation of an Afrikaans TTS system that is based on diphones. Using diphones makes the system flexible but presents other challenges. A previous effort to design an Afrikaans TTS system was done by SUN. ... Read more
A non-linear polynomial approximation filter for robust speaker verification

Author: Mothae, Limpho Date: 2003 Bibliography: leaves 101-109. Read more
Operation, administration and maintenance in all optical networks

Author: Baker, Carol Date: 2001 The phenomenal growth rate of Internet traffic as well as the increasing demand for high bandwidth services such as video-on-demand (VoD), high definition TV (HDTV), video-conferencing etc., have created a new networking environment in which ... Read more
Supporting real time video over ATM networks

Author: Shija, Benedict Date: 2003 In this project, we propose and evaluate an approach to delimit and tag such independent video slice at the ATM layer for early discard. This involves the use of a tag cell differentiated from the rest of the data by its PTI value and a ... Read more
Usability engineering of interactive voice responsive (IVR) systems in oral users of Southern Africa

Author: Ndwe, Tembalethu Jama Date: 2011 This research study focuses on the feasibility of using the telephone as a tool for information access in the oral communities of Southern Africa. The OpenPhone and BGR systems are used as case studies and their designs have been influenced ... Read more