| 2020 | LREC | Semi-supervised Development of ASR Systems for Multilingual Code-switched Speech in Under-resourced Languages. | Astik Biswas, Emre Yilmaz, Febe de Wet, Ewald van der Westhuizen, Thomas Niesler |
| 2019 | Interspeech | Improved Low-Resource Somali Speech Recognition by Semi-Supervised Acoustic and Language Model Training. | Astik Biswas, Raghav Menon, Ewald van der Westhuizen, Thomas Niesler |
| 2019 | Interspeech | Semi-Supervised Acoustic Model Training for Five-Lingual Code-Switched ASR. | Astik Biswas, Emre Yilmaz, Febe de Wet, Ewald van der Westhuizen, Thomas Niesler |
| 2019 | Interspeech | Unsupervised Acoustic Unit Discovery for Speech Synthesis Using Discrete Latent-Variable Neural Networks. | Ryan Eloff, Andr Nortje, Benjamin van Niekerk, Avashna Govender, Leanne Nortje, Arnu Pretorius, Elan Van Biljon, Ewald van der Westhuizen, Lisa van Staden, Herman Kamper |
| 2019 | Interspeech | 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 |
| 2018 | Interspeech | 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, Thomas Niesler |
| 2018 | Interspeech | Building a Unified Code-Switching ASR System for South African Languages. | Emre Yilmaz, Astik Biswas, Ewald van der Westhuizen, Febe de Wet, Thomas Niesler |
| 2018 | LREC | A First South African Corpus of Multilingual Code-switched Soap Opera Speech. | Ewald van der Westhuizen, Thomas Niesler |
| 2017 | Interspeech | Synthesising isiZulu-English Code-Switch Bigrams Using Word Embeddings. | Ewald van der Westhuizen, Thomas Niesler |
| 2016 | Interspeech | The Effect of Postlexical Deletion on Automatic Speech Recognition in Fast Spontaneously Spoken Zulu. | Ewald van der Westhuizen, Thomas Niesler |