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

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

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

An Architectural Scheme for Real-Time Multiple Users Beam Tracking Systems. - Hantao Xu; Hadi Aliakbarian; Ewald van der Westhuizen; Riaan Wolhuter; Guy A. E. Vandenbosch (IEEE Syst. J., 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)

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)

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)

Unsupervised Acoustic Unit Discovery for Speech Synthesis Using Discrete Latent-Variable Neural Networks. - Ryan Eloff; André Nortje; Benjamin van Niekerk; Avashna Govender; Leanne Nortje; Arnu Pretorius; Elan Van Biljon; Ewald van der Westhuizen; Lisa van Staden; Herman Kamper (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)

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)

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)

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)

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)

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

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)