Charl Johannes van Heerden

Publication Activity (10 Years)

Years Active: 2007-2022
Publications (10 Years): 10

Top Topics

Spoken Term Detection

Rapid Development

Top Venues

Lang. Resour. Evaluation

Publications

Walter Heymans, Marelie H. Davel, Charl Johannes van Heerden
Multi-style Training for South African Call Centre Audio. CoRR (2022)
Walter Heymans, Marelie H. Davel, Charl Johannes van Heerden
Efficient acoustic feature transformation in mismatched environments using a Guided-GAN. CoRR (2022)
Walter Heymans, Marelie H. Davel, Charl Johannes van Heerden
Efficient acoustic feature transformation in mismatched environments using a Guided-GAN. Speech Commun. 143 (2022)
Walter Heymans, Marelie H. Davel, Charl Johannes van Heerden
Multi-style Training for South African Call Centre Audio. SACAIR (2021)
Simone Wills, Pieter Uys, Charl Johannes van Heerden, Etienne Barnard
Language Modeling for Speech Analytics in Under-Resourced Languages. INTERSPEECH (2020)
Jan W. F. Thirion, Charl Johannes van Heerden, Oluwapelumi Giwa, Marelie H. Davel
The South African directory enquiries (SADE) name corpus. Lang. Resour. Evaluation 54 (1) (2020)
Daniel R. van Niekerk, Charl Johannes van Heerden, Marelie H. Davel, Neil Kleynhans, Oddur Kjartansson, Martin Jansche, Linne Ha
Rapid Development of TTS Corpora for Four South African Languages. INTERSPEECH (2017)
Charl Johannes van Heerden, Damianos G. Karakos, Karthik Narasimhan, Marelie H. Davel, Richard M. Schwartz
Constructing sub-word units for spoken term detection. ICASSP (2017)
Neil Kleynhans, William Hartmann, Daniel R. van Niekerk, Charl Johannes van Heerden, Richard M. Schwartz, Stavros Tsakalidis, Marelie H. Davel
Code-switched English Pronunciation Modeling for Swahili Spoken Term Detection. SLTU (2016)
Charl Johannes van Heerden, Neil Kleynhans, Marelie H. Davel
Improving the Lwazi ASR Baseline. INTERSPEECH (2016)
Marelie H. Davel, Etienne Barnard, Charl Johannes van Heerden, William Hartmann, Damianos G. Karakos, Richard M. Schwartz, Stavros Tsakalidis
Exploring minimal pronunciation modeling for low resource languages. INTERSPEECH (2015)
Etienne Barnard, Marelie H. Davel, Charl Johannes van Heerden, Febe de Wet, Jaco Badenhorst
The NCHLT speech corpus of the South African languages. SLTU (2014)
Marelie H. Davel, Charl Johannes van Heerden, Etienne Barnard
G2p variant prediction techniques for ASR and STD. INTERSPEECH (2013)
Charl Johannes van Heerden, Marelie H. Davel, Etienne Barnard
Medium-vocabulary speech recognition for under-resourced languages. SLTU (2012)
Marelie H. Davel, Charl Johannes van Heerden, Etienne Barnard
Validating smartphone-collected speech corpora. SLTU (2012)
Florian Metze, Nitendra Rajput, Xavier Anguera, Marelie H. Davel, Guillaume Gravier, Charl Johannes van Heerden, Gautam Varma Mantena, Armando Muscariello, Kishore Prahallad, Igor Szöke, Javier Tejedor
The Spoken Web Search Task at MediaEval 2011. ICASSP (2012)
Florian Metze, Etienne Barnard, Marelie H. Davel, Charl Johannes van Heerden, Xavier Anguera, Guillaume Gravier, Nitendra Rajput
The Spoken Web Search Task. MediaEval (2012)
Jaco Badenhorst, Charl Johannes van Heerden, Marelie H. Davel, Etienne Barnard
Collecting and evaluating speech recognition corpora for 11 South African languages. Lang. Resour. Evaluation 45 (3) (2011)
Marelie H. Davel, Charl Johannes van Heerden, Neil Kleynhans, Etienne Barnard
Efficient Harvesting of Internet Audio for Resource-Scarce ASR. INTERSPEECH (2011)
Charl Johannes van Heerden, Etienne Barnard, Marelie H. Davel, Christiaan van der Walt, Ewald van Dyk, Michael Feld, Christian A. Müller
Combining regression and classification methods for improving automatic speaker age recognition. ICASSP (2010)
Etienne Barnard, Johan Schalkwyk, Charl Johannes van Heerden, Pedro J. Moreno
Voice search for development. INTERSPEECH (2010)
Charl Johannes van Heerden, Neil Kleynhans, Etienne Barnard, Marelie H. Davel
Pooling ASR data for closely related languages. SLTU (2010)
Charl Johannes van Heerden, Etienne Barnard, Marelie H. Davel
Basic speech recognition for spoken dialogues. INTERSPEECH (2009)
Etienne Barnard, Marelie H. Davel, Charl Johannes van Heerden
ASR corpus design for resource-scarce languages. INTERSPEECH (2009)
Michael Feld, Etienne Barnard, Charl Johannes van Heerden, Christian A. Müller
Multilingual speaker age recognition: Regression analyses on the Lwazi corpus. ASRU (2009)
Charl Johannes van Heerden, Johan Schalkwyk, Brian Strope
Language modeling for what-with-where on GOOG-411. INTERSPEECH (2009)
Charl Johannes van Heerden, Etienne Barnard
Speaker-specific variability of phoneme durations. South Afr. Comput. J. 40 (2008)
Charl Johannes van Heerden, Etienne Barnard
Durations of Context-Dependent Phonemes: A New Feature in Speaker Verification. Speaker Classification (2) (2007)