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Towards lecture transcription in resource-scarce environments
(Pattern recognition association of South Africa (PRASA), 2012)
We present progress towards automated Lecture Transcription (LT) in resource scarce environments. Our development has focused on the transcription of lectures in Afrikaans from two faculties at North-West University. A ...
A voice service for user feedback on school meals
(ACM, 2012)
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 ...
Wolof Speech Recognition Model of Digits and Limited-Vocabulary Based on HMM and ToolKit
(Computer Modelling and Simulation (UKSim), 2012 UKSim 14th International Conference on, 2012)
This paper is concerned with Automatic Speech Recognition (ASR) using trainable systems. The aim of this work is to build acoustic models for spoken language Wolof. This is done by employing Hidden Markov Models (HMM) and ...
Effects of application type on the choice of interaction modality in IVR systems
(Unisa Press, 2012)
This paper addresses the feasibility of using the telephone as a tool for information access in the technology challenged and illiterate communities of Southern Africa. We did two case studies of disparate Interactive Voice ...
The Spoken Web Search task
(MediaEval Workshop, Pisa, Italy, 2012)
In this paper, we describe the “Spoken Web Search” Task, which
is being held as part of the 2012 MediaEval campaign. The
purpose of this task is to perform audio search in multiple
languages, with very little resources ...
Improved transition models for cepstral trajectories
(Pattern recognition association of South Africa (PRASA), 2012)
We improve on a piece-wise linear model of the trajectories of Mel Frequency Cepstral Coefficients, which are commonly used as features in Automatic Speech Recognition. For this purpose, we have created a very clean ...
Medium-vocabulary speech recognition for under-resourced languages
(SLTU, 2012)
We report on the development of speech-recognition systems that are able to perform accurate recognition on mediumvocabulary tasks (i.e. tasks that require distinctions between approximately 200 different terms). We are ...
Validating smartphone-collected speech corpora
(SLTU, 2012)
We investigate the effectiveness with which the accuracy of a prompted speech corpus can be validated when minimal additional speech resources are available, and specifically when a language model in the target language ...
Factors that affect the accuracy of text-based language identification
(Computer Speech and Language, 2012)
We 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 classification. ...
Tone realisation in a Yorùbá corpus
(Workshop Spoken Language Technologies for Under-resourced Languages (SLTU), 2012)
We investigate the acoustic realisation of tone in short continuous
utterances in Yor`ub´a. Fundamental frequency (F0) contours
are extracted for automatically aligned syllables from
a speech corpus of 33 speakers ...