A variable-length category-based n-gram language model. - Thomas Niesler; Philip C. Woodland (ICASSP, 1996)

Combination of word-based and category-based language models. - Thomas Niesler; Philip C. Woodland (ICSLP, 1996)

Modelling word-pair relations in a category-based language model. - Thomas Niesler; Philip C. Woodland (ICASSP, 1997)

Comparison of part-of-speech and automatically derived category-based language models for speech recognition. - Thomas Niesler; Edward W. D. Whittaker; Philip C. Woodland (ICASSP, 1998)

Experiments in broadcast news transcription. - Philip C. Woodland; Thomas Hain; Sue E. Johnson; Thomas Niesler; Andreas Tuerk; Steve J. Young (ICASSP, 1998)

The 1998 HTK system for transcription of conversational telephone speech. - Thomas Hain; Philip C. Woodland; Thomas Niesler; Edward W. D. Whittaker (ICASSP, 1999)

Improvements in accuracy and speed in the HTK broadcast news transcription system. - Philip C. Woodland; J. J. Odell; Thomas Hain; Gareth L. Moore; Thomas Niesler; Andreas Tuerk; Edward W. D. Whittaker (EUROSPEECH, 1999)

Variable-length categoryn-gram language models. - Thomas Niesler; Philip C. Woodland (Comput. Speech Lang., 1999)

Unsupervised language model adaptation for lecture speech transcription. - Thomas Niesler; Daniel Willett (INTERSPEECH, 2002)

Pervasive unsupervised adaptation for lecture speech transcription. - Daniel Willett; Thomas Niesler; Erik McDermott; Yasuhiro Minami; Shigeru Katagiri (ICASSP (1), 2003)

Unsupervised adaptation of statistical language models for speech recognition. - Thomas Niesler; Daniel Willett (South Afr. Comput. J., 2003)

The African Speech Technology Project: An Assessment. - Justus C. Roux; Philippa H. Louw; Thomas Niesler (LREC, 2004)

Comparative phonetic analysis and phoneme recognition for Afrikaans, English and Xhosa using the African Speech Technology telephone speech databases. - Thomas Niesler; Philippa H. Louw (South Afr. Comput. J., 2004)

Automatic large-scale oral language proficiency assessment. - Febe de Wet; Christa van der Walt; Thomas Niesler (INTERSPEECH, 2007)

Language-dependent state clustering for multilingual acoustic modelling. - Thomas Niesler (Speech Commun., 2007)

Accent identification in the presence of code-mixing. - Thomas Niesler; Febe de Wet (Odyssey, 2008)

Data-driven phonetic comparison and conversion between south african, british and american English pronunciations. - Linsen Loots; Thomas Niesler (INTERSPEECH, 2009)

Automatically assessing the oral proficiency of proficient L2 speakers. - Pieter Müller; Febe de Wet; Christa van der Walt; Thomas Niesler (SLaTE, 2009)

The effect of code-mixing on accent identification accuracy. - Thomas Niesler; Febe de Wet (Comput. Speech Lang., 2009)

Automatic assessment of oral language proficiency and listening comprehension. - Febe de Wet; Christa van der Walt; Thomas Niesler (Speech Commun., 2009)

An Acoustic Analysis of Tone in Sesotho. - Lehlohonolo Mohasi; Hansjörg Mixdorff; Thomas Niesler (ICPhS, 2011)

Multi-Accent Speech Recognition of Afrikaans, Black and White Varieties of South African English. - Herman Kamper; Thomas Niesler (INTERSPEECH, 2011)

A Study on the Perception of Tone and Intonation in Sesotho. - Hansjörg Mixdorff; Lehlohonolo Mohasi; Malillo Machobane; Thomas Niesler (INTERSPEECH, 2011)

Readability index as a design criterion for elicited imitation tasks in automatic oral proficiency assessment. - Febe de Wet; Pieter Müller; Christa van der Walt; Thomas Niesler (SLaTE, 2011)

Automatic conversion between pronunciations of different English accents. - Linsen Loots; Thomas Niesler (Speech Commun., 2011)

Resource development and experiments in automatic south african broadcast news transcription. - Herman Kamper; Febe de Wet; Thomas Hain; Thomas Niesler (SLTU, 2012)

Multi-accent acoustic modelling of South African English. - Herman Kamper; Félicien Jeje Muamba Mukanya; Thomas Niesler (Speech Commun., 2012)

A dynamic programming framework for neural network-based automatic speech segmentation. - Van Zyl van Vuuren; Louis ten Bosch; Thomas Niesler (INTERSPEECH, 2013)

A Comparison of Two Prosody Modelling Approaches for Sesotho and Serbian. - Lehlohonolo Mohasi; Milan Secujski; Robert Mak; Thomas Niesler (SPECOM, 2014)

Capitalising on North American speech resources for the development of a South African English large vocabulary speech recognition system. - Herman Kamper; Febe de Wet; Thomas Hain; Thomas Niesler (Comput. Speech Lang., 2014)

Improved visual speech synthesis using dynamic viseme k-means clustering and decision trees. - Christiaan Rademan; Thomas Niesler (AVSP, 2015)

Unconstrained Speech Segmentation using Deep Neural Networks. - Van Zyl van Vuuren; Louis ten Bosch; Thomas Niesler (ICPRAM (1), 2015)

Automatic segmentation and clustering of speech using sparse coding and metaheuristic search. - Wiehan Agenbag; Thomas Niesler (INTERSPEECH, 2015)

The Effect of Postlexical Deletion on Automatic Speech Recognition in Fast Spontaneously Spoken Zulu. - Ewald van der Westhuizen; Thomas Niesler (INTERSPEECH, 2016)

Refining Sparse Coding Sub-word Unit Inventories with Lattice-constrained Viterbi Training. - Wiehan Agenbag; Thomas Niesler (SLTU, 2016)

Automatic Speech Recognition of English-isiZulu Code-switched Speech from South African Soap Operas. - Ewald van der Westhuizen; Thomas Niesler (SLTU, 2016)

Choosing an integrated radio-frequency module for a wildlife monitoring wireless sensor network. - Jonathan Wotherspoon; Riaan Wolhuter; Thomas Niesler (AFRICON, 2017)

Radio-browsing for developmental monitoring in Uganda. - Raghav Menon; Armin Saeb; Hugh Cameron; William Kibira; John A. Quinn; Thomas Niesler (ICASSP, 2017)

Energy benefits of on-board behaviour classification for animal-borne sensor applications. - Solomon le Roux; Riaan Wolhuter; Thomas Niesler; Nobby Stevens (IEEE SENSORS, 2017)

Very Low Resource Radio Browsing for Agile Developmental and Humanitarian Monitoring. - Armin Saeb; Raghav Menon; Hugh Cameron; William Kibira; John A. Quinn; Thomas Niesler (INTERSPEECH, 2017)

Synthesising isiZulu-English Code-Switch Bigrams Using Word Embeddings. - Ewald van der Westhuizen; Thomas Niesler (INTERSPEECH, 2017)

Virtual reality assisted microscopy data visualization and colocalization analysis. - Rensu P. Theart; Ben Loos; Thomas R. Niesler (BMC Bioinform., 2017)

Multilingual Neural Network Acoustic Modelling for ASR of Under-Resourced English-isiZulu Code-Switched Speech. - Astik Biswas; Febe de Wet; Ewald van der Westhuizen; Emre Yilmaz 001; Thomas Niesler (INTERSPEECH, 2018)

Fast ASR-free and Almost Zero-resource Keyword Spotting Using DTW and CNNs for Humanitarian Monitoring. - Raghav Menon; Herman Kamper; John A. Quinn; Thomas Niesler (INTERSPEECH, 2018)

Building a Unified Code-Switching ASR System for South African Languages. - Emre Yilmaz 001; Astik Biswas; Ewald van der Westhuizen; Febe de Wet; Thomas Niesler (INTERSPEECH, 2018)

A First South African Corpus of Multilingual Code-switched Soap Opera Speech. - Ewald van der Westhuizen; Thomas Niesler (LREC, 2018)

Improving ASR for Code-Switched Speech in Under-Resourced Languages Using Out-of-Domain Data. - Astik Biswas; Ewald van der Westhuizen; Thomas Niesler; Febe de Wet (SLTU, 2018)

Automatic Speech Recognition for Humanitarian Applications in Somali. - Raghav Menon; Astik Biswas; Armin Saeb; John A. Quinn; Thomas Niesler (SLTU, 2018)

ASR-Free CNN-DTW Keyword Spotting Using Multilingual Bottleneck Features for Almost Zero-Resource Languages. - Raghav Menon; Herman Kamper; Emre Yilmaz 001; John A. Quinn; Thomas Niesler (SLTU, 2018)

Cluster Size Management in Multi-Stage Agglomerative Hierarchical Clustering of Acoustic Speech Segments. - Lerato Lerato; Thomas Niesler (CoRR, 2018)

Direction of Arrival Estimation of Wide-band Signals with Planar Microphone Arrays. - Rudolf Byker; Thomas Niesler (CoRR, 2018)

Almost Zero-Resource ASR-free Keyword Spotting using Multilingual Bottleneck Features and Correspondence Autoencoders. - Raghav Menon; Herman Kamper; John A. Quinn; Thomas Niesler (CoRR, 2018)

A Comparative Study of Features for Acoustic Cough Detection Using Deep Architectures. - Igor D. S. Miranda; Andreas H. Diacon; Thomas R. Niesler (EMBC, 2019)

Improving Automatically Induced Lexicons for Highly Agglutinating Languages Using Data-Driven Morphological Segmentation. - Wiehan Agenbag; Thomas Niesler (INTERSPEECH, 2019)

Improved Low-Resource Somali Speech Recognition by Semi-Supervised Acoustic and Language Model Training. - Astik Biswas; Raghav Menon; Ewald van der Westhuizen; Thomas Niesler (INTERSPEECH, 2019)

Semi-Supervised Acoustic Model Training for Five-Lingual Code-Switched ASR. - Astik Biswas; Emre Yilmaz 001; Febe de Wet; Ewald van der Westhuizen; Thomas Niesler (INTERSPEECH, 2019)

Feature Exploration for Almost Zero-Resource ASR-Free Keyword Spotting Using a Multilingual Bottleneck Extractor and Correspondence Autoencoders. - Raghav Menon; Herman Kamper; Ewald van der Westhuizen; John A. Quinn; Thomas Niesler (INTERSPEECH, 2019)

Automatic sub-word unit discovery and pronunciation lexicon induction for ASR with application to under-resourced languages. - Wiehan Agenbag; Thomas Niesler (Comput. Speech Lang., 2019)

Synthesised bigrams using word embeddings for code-switched ASR of four South African language pairs. - Ewald van der Westhuizen; Thomas Niesler (Comput. Speech Lang., 2019)

Feature trajectory dynamic time warping for clustering of speech segments. - Lerato Lerato; Thomas Niesler (EURASIP J. Audio Speech Music. Process., 2019)

Semi-supervised acoustic and language model training for English-isiZulu code-switched speech recognition. - Astik Biswas; Febe de Wet; Ewald van der Westhuizen; Thomas Niesler (CodeSwitch@LREC, 2020)

Interactive Image Exploration for Visually Impaired Readers using Audio-augmented Touch Gestures. - Rynhardt Kruger; Febe de Wet; Thomas Niesler (IV, 2020)

Semi-supervised Development of ASR Systems for Multilingual Code-switched Speech in Under-resourced Languages. - Astik Biswas; Emre Yilmaz 001; Febe de Wet; Ewald van der Westhuizen; Thomas Niesler (LREC, 2020)

Practical evaluation of carrier sensing for a LoRa wildlife monitoring network. - Morgan O'Kennedy; Thomas Niesler; Riaan Wolhuter; Nathalie Mitton (Networking, 2020)

Semi-supervised Acoustic Modelling for Five-lingual Code-switched ASR using Automatically-segmented Soap Opera Speech. - Nick Wilkinson; Astik Biswas; Emre Yilmaz 001; Febe de Wet; Ewald van der Westhuizen; Thomas Niesler (SLTU-CCURL@LREC, 2020)

Multilingual Bottleneck Features for Improving ASR Performance of Code-Switched Speech in Under-Resourced Languages. - Trideba Padhi; Astik Biswas; Febe de Wet; Ewald van der Westhuizen; Thomas Niesler (CoRR, 2020)

Machine Learning Prediction of Hospitalization due to COVID-19 based on Self-Reported Symptoms: A Study for Brazil. - Igor D. S. Miranda; Gildeberto Cardoso; Madhurananda Pahar; Gabriel Oliveira; Thomas Niesler (BHI, 2021)

Deep Neural Network Based Cough Detection Using Bed-Mounted Accelerometer Measurements. - Madhurananda Pahar; Igor D. S. Miranda; Andreas H. Diacon; Thomas Niesler (ICASSP, 2021)

A Hybrid CNN-BiLSTM Voice Activity Detector. - Nicholas Wilkinson; Thomas Niesler (ICASSP, 2021)

Optimised Code-Switched Language Model Data Augmentation in Four Under-Resourced South African Languages. - Joshua Jansen van Vueren; Thomas Niesler (SPECOM, 2021)

Multilingual Training Set Selection for ASR in Under-Resourced Malian Languages. - Ewald van der Westhuizen; Trideba Padhi; Thomas Niesler (SPECOM, 2021)

COVID-19 cough classification using machine learning and global smartphone recordings. - Madhurananda Pahar; Marisa Klopper; Robin Warren 001; Thomas Niesler (Comput. Biol. Medicine, 2021)

Automatic Cough Classification for Tuberculosis Screening in a Real-World Environment. - Madhurananda Pahar; Marisa Klopper; Byron Reeve; Grant Theron; Rob Warren 001; Thomas Niesler (CoRR, 2021)

Machine Learning based COVID-19 Detection from Smartphone Recordings: Cough, Breath and Speech. - Madhurananda Pahar; Thomas Niesler (CoRR, 2021)

Wake-Cough: cough spotting and cougher identification for personalised long-term cough monitoring. - Madhurananda Pahar; Marisa Klopper; Byron Reeve; Rob Warren 001; Grant Theron; Andreas H. Diacon; Thomas Niesler (EUSIPCO, 2022)

TB or not TB? Acoustic cough analysis for tuberculosis classification. - Geoffrey T. Frost; Grant Theron; Thomas Niesler (INTERSPEECH, 2022)

Fine-Tuned Self-supervised Speech Representations for Language Diarization in Multilingual Code-Switched Speech. - Geoffrey T. Frost; Emily Morris; Joshua Jansen van Vüren; Thomas Niesler (SACAIR, 2022)

Code-Switched Language Modelling Using a Code Predictive Lstm in Under-Resourced South African Languages. - Joshua Jansen van Vüren; Thomas Niesler (SLT, 2022)

COVID-19 detection in cough, breath and speech using deep transfer learning and bottleneck features. - Madhurananda Pahar; Marisa Klopper; Robin Warren 001; Thomas Niesler (Comput. Biol. Medicine, 2022)

Automatic Tuberculosis and COVID-19 cough classification using deep learning. - Madhurananda Pahar; Marisa Klopper; Byron Reeve; Rob Warren 001; Grant Theron; Andreas H. Diacon; Thomas Niesler (CoRR, 2022)

Code-switched automatic speech recognition in five South African languages. - Astik Biswas; Emre Yilmaz 001; Ewald van der Westhuizen; Febe de Wet; Thomas Niesler (Comput. Speech Lang., 2022)

Feature learning for efficient ASR-free keyword spotting in low-resource languages. - Ewald van der Westhuizen; Herman Kamper; Raghav Menon; John A. Quinn; Thomas Niesler (Comput. Speech Lang., 2022)

Automatic Non-Invasive Cough Detection based on Accelerometer and Audio Signals. - Madhurananda Pahar; Igor D. S. Miranda; Andreas H. Diacon; Thomas Niesler (J. Signal Process. Syst., 2022)

Bridging Healthcare Barriers with mHealth: A Systematic Review of Tuberculosis Applications and their Limitations. - Kimsey Zajac; Aycan Aslan; Maike Greve; Lutz M. Kolbe; Grant Theron; Thomas Niesler; Marisa Klopper; Frank Cobelens (AMCIS, 2023)

Improving Under-Resourced Code-Switched Speech Recognition: Large Pre-trained Models or Architectural Interventions. - Joshua Jansen van Vüren; Thomas Niesler (INTERSPEECH, 2023)

Accelerometer-Based Bed Occupancy Detection for Automatic, Non-Invasive Long-Term Cough Monitoring. - Madhurananda Pahar; Igor D. S. Miranda; Andreas H. Diacon; Thomas Niesler (IEEE Access, 2023)

Mathematical Content Browsing for Print-disabled Readers Based on Virtual-world Exploration and Audio-visual Sensory Substitution. - Rynhardt Kruger; Febe de Wet; Thomas Niesler (ACM Trans. Access. Comput., 2023)

Automatic Partitioning of a Code-Switched Speech Corpus Using Mixed-Integer Programming. - Joshua Miles Jansen van Vüren; Febe de Wet; Thomas Niesler (LREC/COLING, 2024)

A Transformer-Based Voice Activity Detector. - Biswajit Karan; Joshua Jansen van Vüren; Febe de Wet; Thomas Niesler (INTERSPEECH, 2024)

Learning to rumble: Automated elephant call classification, detection and endpointing using deep architectures. - Christiaan M. Geldenhuys; Thomas R. Niesler (CoRR, 2024)