Quick Links

DSP intranet wiki
Department of E&E
Stellenbosch University


Prof Johan du Preez
Prof Thomas Niesler
Dr Gert-Jan van Rooyen
Dr Riaan Wolhuter
Dr Herman Engelbrecht

  Contact us

Room E309
Department of E&E Engineering
Stellenbosch University
Private Bag X1
Matieland 7602
South Africa

Charlene van der Hoeven
Tel: 021 808 4481
  About us

We are a research group within the Department of Electrical and Electronic Engineering concerned with Digital Signal Processing. Yearly we attract numerous postgraduate engineering students studying towards their Masters and PhD degrees.

The group has many areas of particular focus and research targeting signal processing of various kinds. These include speech recognition, image processing, broadcasting, network protocols, under-water communication and software defined radio.



In order for a computer or other electronic device to interpret human speech, various processing techniques need to be applied to the audio signal. The study of speech sounds enables researchers to develop ways to recognize words, as well as identify a speaker by matching voice traits specific to the speaker. Audio processing is also used to watermark music and other audio content as well as transcribe music, to name but a few uses.


  Software Defined

Conventionally, different signals need different transceiver hardware to process the signals correctly. However, by doing most of the signal processing in software, one can design a generic processing block capable of handling a wide range of different signals by merely changing the software. Research in this field aims to optimize and improve the digital processing capabilities of such generic devices.


  Signal Reception
and Transmission

Communicating over a distance is an ever changing, yet ever important need. The study of processing signals at receiver and transmitter side helps create devices that communicate faster and better. Cellphones, satellites and wifi devices, to name a few, all benefit from better telecommunication techniques.


Many applications today rely on the recognition of image elements in pictures or videos. Research is continuously improving image processing techniques in order to extract and recognize picture information (eg letters/numbers, finger prints and faces) as effectively and accurately as possible.



We are surrounded by computer networks in the global quest for faster information access and better electronic communication in all its forms. The infrastructure and protocols governing networks are important parts of its performance as well as usability. Understanding network related theory enables us to utilize existing networks better as well as developing new techniques which out-perform the older ones.



There are countless submarines and Automated Underwater Vehicles (AUV's) roaming the depths of the sea. These devices need to communicate with each other as well as with stations on land. The research focuses on development and simulation of novel and more effective ways to send and receive signals under the surface of the sea - an environment in which wireless communication is significantly more complex than in open air.

Feel free to contact us if you would like to obtain any additional information.