Thomas Niesler

Orcid: 0000-0002-7341-1017

Affiliations:
  • University of Stellenbosch, South Africa


According to our database1, Thomas Niesler authored at least 86 papers between 1996 and 2023.

Collaborative distances:
  • Dijkstra number2 of four.
  • Erdős number3 of four.

Timeline

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Online presence:

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Bibliography

2023
Mathematical Content Browsing for Print-disabled Readers Based on Virtual-world Exploration and Audio-visual Sensory Substitution.
ACM Trans. Access. Comput., June, 2023

Accelerometer-Based Bed Occupancy Detection for Automatic, Non-Invasive Long-Term Cough Monitoring.
IEEE Access, 2023

Bridging Healthcare Barriers with mHealth: A Systematic Review of Tuberculosis Applications and their Limitations.
Proceedings of the 29th Americas Conference on Information Systems, 2023

2022
Automatic Non-Invasive Cough Detection based on Accelerometer and Audio Signals.
J. Signal Process. Syst., 2022

Feature learning for efficient ASR-free keyword spotting in low-resource languages.
Comput. Speech Lang., 2022

Code-switched automatic speech recognition in five South African languages.
Comput. Speech Lang., 2022

Automatic Tuberculosis and COVID-19 cough classification using deep learning.
CoRR, 2022

COVID-19 detection in cough, breath and speech using deep transfer learning and bottleneck features.
Comput. Biol. Medicine, 2022

Code-Switched Language Modelling Using a Code Predictive Lstm in Under-Resourced South African Languages.
Proceedings of the IEEE Spoken Language Technology Workshop, 2022

Fine-Tuned Self-supervised Speech Representations for Language Diarization in Multilingual Code-Switched Speech.
Proceedings of the Artificial Intelligence Research - Third Southern African Conference, 2022

TB or not TB? Acoustic cough analysis for tuberculosis classification.
Proceedings of the Interspeech 2022, 2022

Wake-Cough: cough spotting and cougher identification for personalised long-term cough monitoring.
Proceedings of the 30th European Signal Processing Conference, 2022

2021
Machine Learning based COVID-19 Detection from Smartphone Recordings: Cough, Breath and Speech.
CoRR, 2021

Automatic Cough Classification for Tuberculosis Screening in a Real-World Environment.
CoRR, 2021

COVID-19 cough classification using machine learning and global smartphone recordings.
Comput. Biol. Medicine, 2021

Multilingual Training Set Selection for ASR in Under-Resourced Malian Languages.
Proceedings of the Speech and Computer - 23rd International Conference, 2021

Optimised Code-Switched Language Model Data Augmentation in Four Under-Resourced South African Languages.
Proceedings of the Speech and Computer - 23rd International Conference, 2021

A Hybrid CNN-BiLSTM Voice Activity Detector.
Proceedings of the IEEE International Conference on Acoustics, 2021

Deep Neural Network Based Cough Detection Using Bed-Mounted Accelerometer Measurements.
Proceedings of the IEEE International Conference on Acoustics, 2021

Machine Learning Prediction of Hospitalization due to COVID-19 based on Self-Reported Symptoms: A Study for Brazil.
Proceedings of the IEEE EMBS International Conference on Biomedical and Health Informatics, 2021

2020
Multilingual Bottleneck Features for Improving ASR Performance of Code-Switched Speech in Under-Resourced Languages.
CoRR, 2020

Semi-supervised Acoustic Modelling for Five-lingual Code-switched ASR using Automatically-segmented Soap Opera Speech.
Proceedings of the 1st Joint Workshop on Spoken Language Technologies for Under-resourced languages and Collaboration and Computing for Under-Resourced Languages, 2020

Practical evaluation of carrier sensing for a LoRa wildlife monitoring network.
Proceedings of the 2020 IFIP Networking Conference, 2020

Semi-supervised Development of ASR Systems for Multilingual Code-switched Speech in Under-resourced Languages.
Proceedings of The 12th Language Resources and Evaluation Conference, 2020

Interactive Image Exploration for Visually Impaired Readers using Audio-augmented Touch Gestures.
Proceedings of the 24th International Conference on Information Visualisation, 2020

Semi-supervised acoustic and language model training for English-isiZulu code-switched speech recognition.
Proceedings of the The 4th Workshop on Computational Approaches to Code Switching, 2020

2019
Feature trajectory dynamic time warping for clustering of speech segments.
EURASIP J. Audio Speech Music. Process., 2019

Synthesised bigrams using word embeddings for code-switched ASR of four South African language pairs.
Comput. Speech Lang., 2019

Automatic sub-word unit discovery and pronunciation lexicon induction for ASR with application to under-resourced languages.
Comput. Speech Lang., 2019

Feature Exploration for Almost Zero-Resource ASR-Free Keyword Spotting Using a Multilingual Bottleneck Extractor and Correspondence Autoencoders.
Proceedings of the Interspeech 2019, 2019

Semi-Supervised Acoustic Model Training for Five-Lingual Code-Switched ASR.
Proceedings of the Interspeech 2019, 2019

Improved Low-Resource Somali Speech Recognition by Semi-Supervised Acoustic and Language Model Training.
Proceedings of the Interspeech 2019, 2019

Improving Automatically Induced Lexicons for Highly Agglutinating Languages Using Data-Driven Morphological Segmentation.
Proceedings of the Interspeech 2019, 2019

A Comparative Study of Features for Acoustic Cough Detection Using Deep Architectures.
Proceedings of the 41st Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2019

2018
Almost Zero-Resource ASR-free Keyword Spotting using Multilingual Bottleneck Features and Correspondence Autoencoders.
CoRR, 2018

Direction of Arrival Estimation of Wide-band Signals with Planar Microphone Arrays.
CoRR, 2018

Cluster Size Management in Multi-Stage Agglomerative Hierarchical Clustering of Acoustic Speech Segments.
CoRR, 2018

ASR-Free CNN-DTW Keyword Spotting Using Multilingual Bottleneck Features for Almost Zero-Resource Languages.
Proceedings of the 6th Intl. Workshop on Spoken Language Technologies for Under-Resourced Languages, 2018

Automatic Speech Recognition for Humanitarian Applications in Somali.
Proceedings of the 6th Intl. Workshop on Spoken Language Technologies for Under-Resourced Languages, 2018

Improving ASR for Code-Switched Speech in Under-Resourced Languages Using Out-of-Domain Data.
Proceedings of the 6th Intl. Workshop on Spoken Language Technologies for Under-Resourced Languages, 2018

A First South African Corpus of Multilingual Code-switched Soap Opera Speech.
Proceedings of the Eleventh International Conference on Language Resources and Evaluation, 2018

Building a Unified Code-Switching ASR System for South African Languages.
Proceedings of the Interspeech 2018, 2018

Fast ASR-free and Almost Zero-resource Keyword Spotting Using DTW and CNNs for Humanitarian Monitoring.
Proceedings of the Interspeech 2018, 2018

Multilingual Neural Network Acoustic Modelling for ASR of Under-Resourced English-isiZulu Code-Switched Speech.
Proceedings of the Interspeech 2018, 2018

2017
Virtual reality assisted microscopy data visualization and colocalization analysis.
BMC Bioinform., 2017

Synthesising isiZulu-English Code-Switch Bigrams Using Word Embeddings.
Proceedings of the Interspeech 2017, 2017

Very Low Resource Radio Browsing for Agile Developmental and Humanitarian Monitoring.
Proceedings of the Interspeech 2017, 2017

Energy benefits of on-board behaviour classification for animal-borne sensor applications.
Proceedings of the 2017 IEEE SENSORS, Glasgow, United Kingdom, October 29, 2017

Radio-browsing for developmental monitoring in Uganda.
Proceedings of the 2017 IEEE International Conference on Acoustics, 2017

Choosing an integrated radio-frequency module for a wildlife monitoring wireless sensor network.
Proceedings of the IEEE AFRICON 2017, Cape Town, South Africa, September 18-20, 2017, 2017

2016
Automatic Speech Recognition of English-isiZulu Code-switched Speech from South African Soap Operas.
Proceedings of the SLTU-2016, 2016

Refining Sparse Coding Sub-word Unit Inventories with Lattice-constrained Viterbi Training.
Proceedings of the SLTU-2016, 2016

The Effect of Postlexical Deletion on Automatic Speech Recognition in Fast Spontaneously Spoken Zulu.
Proceedings of the Interspeech 2016, 2016

2015
Automatic segmentation and clustering of speech using sparse coding and metaheuristic search.
Proceedings of the INTERSPEECH 2015, 2015

Unconstrained Speech Segmentation using Deep Neural Networks.
Proceedings of the ICPRAM 2015, 2015

Improved visual speech synthesis using dynamic viseme k-means clustering and decision trees.
Proceedings of the Auditory-Visual Speech Processing, 2015

2014
Capitalising on North American speech resources for the development of a South African English large vocabulary speech recognition system.
Comput. Speech Lang., 2014

A Comparison of Two Prosody Modelling Approaches for Sesotho and Serbian.
Proceedings of the Speech and Computer - 16th International Conference, 2014

2013
A dynamic programming framework for neural network-based automatic speech segmentation.
Proceedings of the INTERSPEECH 2013, 2013

2012
Multi-accent acoustic modelling of South African English.
Speech Commun., 2012

Resource development and experiments in automatic south african broadcast news transcription.
Proceedings of the Third Workshop on Spoken Language Technologies for Under-resourced Languages, 2012

2011
Automatic conversion between pronunciations of different English accents.
Speech Commun., 2011

Readability index as a design criterion for elicited imitation tasks in automatic oral proficiency assessment.
Proceedings of the ISCA International Workshop on Speech and Language Technology in Education, 2011

A Study on the Perception of Tone and Intonation in Sesotho.
Proceedings of the INTERSPEECH 2011, 2011

Multi-Accent Speech Recognition of Afrikaans, Black and White Varieties of South African English.
Proceedings of the INTERSPEECH 2011, 2011

An Acoustic Analysis of Tone in Sesotho.
Proceedings of the 17th International Congress of Phonetic Sciences, 2011

2009
Automatic assessment of oral language proficiency and listening comprehension.
Speech Commun., 2009

The effect of code-mixing on accent identification accuracy.
Comput. Speech Lang., 2009

Automatically assessing the oral proficiency of proficient L2 speakers.
Proceedings of the ISCA International Workshop on Speech and Language Technology in Education, 2009

Data-driven phonetic comparison and conversion between south african, british and american English pronunciations.
Proceedings of the INTERSPEECH 2009, 2009

2008
Accent identification in the presence of code-mixing.
Proceedings of the Odyssey 2008: The Speaker and Language Recognition Workshop, 2008

2007
Language-dependent state clustering for multilingual acoustic modelling.
Speech Commun., 2007

Automatic large-scale oral language proficiency assessment.
Proceedings of the INTERSPEECH 2007, 2007

2004
Comparative phonetic analysis and phoneme recognition for Afrikaans, English and Xhosa using the African Speech Technology telephone speech databases.
South Afr. Comput. J., 2004

The African Speech Technology Project: An Assessment.
Proceedings of the Fourth International Conference on Language Resources and Evaluation, 2004

2003
Unsupervised adaptation of statistical language models for speech recognition.
South Afr. Comput. J., 2003

Pervasive unsupervised adaptation for lecture speech transcription.
Proceedings of the 2003 IEEE International Conference on Acoustics, 2003

2002
Unsupervised language model adaptation for lecture speech transcription.
Proceedings of the 7th International Conference on Spoken Language Processing, ICSLP2002, 2002

1999
Variable-length categoryn-gram language models.
Comput. Speech Lang., 1999

Improvements in accuracy and speed in the HTK broadcast news transcription system.
Proceedings of the Sixth European Conference on Speech Communication and Technology, 1999

The 1998 HTK system for transcription of conversational telephone speech.
Proceedings of the 1999 IEEE International Conference on Acoustics, 1999

1998
Experiments in broadcast news transcription.
Proceedings of the 1998 IEEE International Conference on Acoustics, 1998

Comparison of part-of-speech and automatically derived category-based language models for speech recognition.
Proceedings of the 1998 IEEE International Conference on Acoustics, 1998

1997
Modelling word-pair relations in a category-based language model.
Proceedings of the 1997 IEEE International Conference on Acoustics, 1997

1996
Combination of word-based and category-based language models.
Proceedings of the 4th International Conference on Spoken Language Processing, 1996

A variable-length category-based n-gram language model.
Proceedings of the 1996 IEEE International Conference on Acoustics, 1996


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