Using Cell Phones to Improve Language Skills: The Hadeda Project. - Laurie L. Butgereit; Adele Botha; Daniel R. van Niekerk (AFRICOM, 2009)

Phonetic alignment for speech synthesis in under-resourced languages. - Daniel R. van Niekerk; Etienne Barnard (INTERSPEECH, 2009)

Introducing the Speect speech synthesis platform. - Johannes A. Louw; Daniel R. van Niekerk; Georg I. Schlünz (Blizzard Challenge, 2010)

An intonation model for TTS in sepedi. - Daniel R. van Niekerk; Etienne Barnard (INTERSPEECH, 2010)

Tone realisation in a yorùbá speech recognition corpus. - Daniel R. van Niekerk; Etienne Barnard (SLTU, 2012)

Generating fundamental frequency contours for speech synthesis in yorùbá. - Daniel R. van Niekerk; Etienne Barnard (INTERSPEECH, 2013)

A target approximation intonation model for yorùbá TTS. - Daniel R. van Niekerk; Etienne Barnard (INTERSPEECH, 2014)

Predicting utterance pitch targets in Yorùbá for tone realisation in speech synthesis. - Daniel R. van Niekerk; Etienne Barnard (Speech Commun., 2014)

AfriBooms: An Online Treebank for Afrikaans. - Liesbeth Augustinus; Peter Dirix; Daniel R. van Niekerk; Ineke Schuurman; Vincent Vandeghinste; Frank Van Eynde; Gerhard B. Van Huyssteen (LREC, 2016)

Code-switched English Pronunciation Modeling for Swahili Spoken Term Detection. - Neil Kleynhans; William Hartmann; Daniel R. van Niekerk; Charl Johannes van Heerden; Richard M. Schwartz; Stavros Tsakalidis; Marelie H. Davel (SLTU, 2016)

Universal Dependencies for Afrikaans. - Peter Dirix; Liesbeth Augustinus; Daniel R. van Niekerk; Frank Van Eynde (UDW@NoDaLiDa, 2017)

Rapid Development of TTS Corpora for Four South African Languages. - Daniel R. van Niekerk; Charl Johannes van Heerden; Marelie H. Davel; Neil Kleynhans; Oddur Kjartansson; Martin Jansche; Linne Ha (INTERSPEECH, 2017)

Finding Intelligible Consonant-Vowel Sounds Using High-Quality Articulatory Synthesis. - Daniel R. van Niekerk; Anqi Xu 002; Branislav Gerazov; Paul Konstantin Krug; Peter Birkholz; Yi Xu 007 (INTERSPEECH, 2020)

Evaluating Features and Metrics for High-Quality Simulation of Early Vocal Learning of Vowels. - Branislav Gerazov; Daniel R. van Niekerk; Anqi Xu 002; Paul Konstantin Krug; Peter Birkholz; Yi Xu 007 (CoRR, 2020)

Model-Based Exploration of Linking Between Vowel Articulatory Space and Acoustic Space. - Anqi Xu 002; Daniel R. van Niekerk; Branislav Gerazov; Paul Konstantin Krug; Santitham Prom-on; Peter Birkholz; Yi Xu 007 (Interspeech, 2021)

Articulatory Synthesis for Data Augmentation in Phoneme Recognition. - Paul Konstantin Krug; Peter Birkholz; Branislav Gerazov; Daniel Rudolph van Niekerk; Anqi Xu 002; Yi Xu 007 (INTERSPEECH, 2022)

Exploration strategies for articulatory synthesis of complex syllable onsets. - Daniel R. van Niekerk; Anqi Xu 002; Branislav Gerazov; Paul Konstantin Krug; Peter Birkholz; Yi Xu 007 (INTERSPEECH, 2022)

Evoc-Learn - High quality simulation of early vocal learning. - Yi Xu 007; Anqi Xu 002; Daniel R. van Niekerk; Branislav Gerazov; Peter Birkholz; Paul Konstantin Krug; Santitham Prom-on; Lorna F. Halliday (INTERSPEECH, 2022)

Self-Supervised Solution to the Control Problem of Articulatory Synthesis. - Paul Konstantin Krug; Peter Birkholz; Branislav Gerazov; Daniel R. van Niekerk; Anqi Xu 002; Yi Xu 007 (INTERSPEECH, 2023)

Artificial Vocal Learning Guided by Phoneme Recognition and Visual Information. - Paul Konstantin Krug; Peter Birkholz; Branislav Gerazov; Daniel Rudolph van Niekerk; Anqi Xu 002; Yi Xu 007 (IEEE ACM Trans. Audio Speech Lang. Process., 2023)

Simulating vocal learning of spoken language: Beyond imitation. - Daniel R. van Niekerk; Anqi Xu 002; Branislav Gerazov; Paul Konstantin Krug; Peter Birkholz; Lorna F. Halliday; Santitham Prom-on; Yi Xu 007 (Speech Commun., 2023)

In Pursuit for the Best Error Metric for Optimisation of Articulatory Vowel Synthesis. - Branislav Gerazov; Paul Konstantin Krug; Daniel R. van Niekerk; Anqi Xu 002; Peter Birkholz; Yi Xu 007 (SPECOM (2), 2024)

Artificial vocal learning guided by speech recognition: What it may tell us about how children learn to speak. - Anqi Xu 002; Daniel R. van Niekerk; Branislav Gerazov; Paul Konstantin Krug; Peter Birkholz; Santitham Prom-on; Lorna F. Halliday; Yi Xu 007 (J. Phonetics, 2024)

Learnability of English diphthongs: One dynamic target vs. two static targets. - Anqi Xu 002; Daniel R. van Niekerk; Branislav Gerazov; Paul Konstantin Krug; Santitham Prom-on; Peter Birkholz; Yi Xu 007 (Speech Commun., 2025)