Audio System Technology

Processes in the field of audio system technology are part of the core expertise of the Oldenburg Branch for Hearing, Speech and Audio Technology HSA. Our researchers develop technologies for audio system solutions, including hardware design, selection of components and algorithms as well as software applications. They span the whole process – from the first initial idea to the design phase and cooperation with partners to acoustic end-of-line inspection in production. The main strengths of the Fraunhofer IDMT lie, among others, in pattern recognition, machine learning and human-technology interaction.

Examples of audio system technology solutions

  • ear!s – TV audio system for individual sound adjustment with algorithms supplied by the Fraunhofer IDMT in Oldenburg.
  • Telekom Smart Speaker – Voice assistant for home applications with audio technology developed by the Oldenburg Branch for Hearing, Speech and Audio Technology HSA. More info.
  • CARU Smart Sensor – Development and integration of a highly sensitive microphone technology for an emergency call system for inpatient and home care.  More info(German).

Our Services

  • Design of microphone arrays with a large number of microphones and microphones of different types (e.g. MEMS)
  • Application-specific hardware development of signal processing units
  • Synchronous transmission technology for multi-channel audio signals via standard IP protocols, USB audio and customer-specific interfaces

Products and Solutions


Telekom Smart Speaker

The Fraunhofer IDMT in Oldenburg developed the Audio System Technology as well as the Speechrecognition for the Telekom Smart Speaker.



Hardware-Design for many different models.


Intelligent Acoustic Sensor Nodes

Easily integratable sensor platform for capturing and processing acoustic data in sensor networks.

Current Research Projects


Press Release / 14.6.2016

Industrie 4.0 learns how to hear

In the joint project ACME 4.0, partners from industry and research will investigate the potential of acoustically monitoring machines and production processes. The goal is to develop an energy-autonomous, highly-integrated sensor platform that can be integrated wirelessly in industrial installations.


Dereverberation and reverberation of audio, music, and speech

In the Marie-Curie Initial Training Network »DREAMS (Dereverberation and Reverberation of Audio, Music, and Speech)«, Fraunhofer IDMT develops signal processing strategies designed to remove reverberation components.


Acoustic monitoring in Smart Cities

Insight into our Research

In the research project EarIt Fraunhofer IDMT developed an acoustic processing unit, that can easily be integrated into existing cable-based or wireless sensor networks.

Speech Recognition for Products and Processes

Speech detection systems allow operation of technical systems without visual or physical contact. The speech recognition technology of the Fraunhofer IDMT in Oldenburg functions robustly - with and without an internet connection.

R&D-Services and Licencing

Please contact us in case you are interested in our expertise and services.

All solutions at a glance

Here you can find further information about our solutions of the Oldenburg Branch for Hearing, Speech and Audio Technology HSA.