Real-Time Audio Processing

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Tutors: Daniel Haupt, Sebastian Nagel and Hauke Krüger

Type: Laboratory with 4 SWS

Requirements: Completed bachelor and basic skills in digital signal processing

Documentation & Language:

  • Documentation: All needed documents are provided free of charge. The documents are in English.
  • Supervision: German & English

Registration: via campusOffice


  • Interest in Audio Signal Processing
  • Knowledge in C++ and MATLAB
  • Basic knowledge in digital signal processing


Only takes place in Summer term.

Introduction session:
Tuesday, April 18th, 2017
02.00pm - 03.00pm
Training room 209 IKS

Training dates: on Tuesdays, -

  • 25.04.2017
  • 02.05.2017
  • 09.05.2017
  • 16.05.2017
  • 23.05.2017
  • 30.05.2017
  • 06.06.2017: not applicable, Excursion Week
  • 13.06.2017
  • 20.06.2017
  • 27.06.2017
  • 04.07.2017
  • 11.07.2017
  • 18.07.2017



The Real-Time Audio Processing Laboratory (RTAP) gives the opportunity to become familiar with algorithms and concepts of digital processing of audio signals. It is a long-standing course of the institute and unique in its realization: the participating students define their on goals - the implementation of a realtime algorithm - by themselves. Subsequently, the students familiarize themselves with the necessary theory and methods, in such a way that they can pursue their target in self-reliant work. Assistance will be given by the IKS staff at a weekly date.

New Concept

Starting from summer term 2017, the RTAP lab is relaunched in a new design. Differing from last years' concept, a variety of target hardware platforms will be available to the students, for example Windows-PC with multichannel audio devices or iOS based tablets. Furthermore new tailored tutorials for theory of signal processing and algorithms will be available. The students are meant to work through the tutorials they need, depending on their target and prior knowledge. The basis for the implementation of the algorithms is the multi-platform real-time framework RTProc, which has been developed at IKS for many years.

Plenty of hardware will be provided for the projects:

  • Windows PCs incl. development environment with RTProc, Visual Studio and MATLAB
  • iOS devices incl. XCode development environment
  • single-board computers
  • external multi-channel sound cards and microphones
  • the IKS|Lab can also be used for projects in the lab!

Laboratory program

  • Two introductory sessions at IKS to prepare the participants with regard to implementation aspects and tools
  • Project phase, flexible in terms of time and place (appprox. 12 weeks)
    • in groups with two students each
    • work from home or at the institute (depends on individual project requirements
  • Regular meetings with supervisors
  • Final session: Presentation of all projects

Examples of possible projects:

  • Binaural Renderer
  • Guitar Tuning Device
  • Noise Reduction
  • Synthesizer App
  • Real-Time Beat-Tracking
  • Voice Changer

and many more...


The results of the evaluation of the last years are summarized below.

Summer term 2016

Participants of the evaluation: 8
Global grade: 1.2
Laboratory Concept: 1.3
Instruction and Supervision: 1.1


Summer term 2015

Participants of the evaluation: 8
Global grade: 1.5
Laboratory Concept: 1.7
Instruction and Supervision: 1.3