Voice Control

Whether it's a media or household device, building technology or the telephone - are you looking for a solution that allows your customers to operate it naturally? Ambient voice control from the Fraunhofer IDMT's Oldenburg Branch for Hearing, Speech and Audio Technology HSA enables simple, contactless and reliable operation of complex technical devices or systems on demand. The software solution can be integrated directly into your application and is adaptable to a wide range of application scenarios and end devices.

Benefits for your customers

Optimal support thanks to reliable operation

The voice control of the Fraunhofer IDMT enables users who are not familiar with technology to benefit from complex technical systems in their everyday lives. This is important, for example, in assistance systems for people who need both hands for other activities or elderly or physically impaired people. Especially for these users, systems must be easy to operate and function reliably.

Voice input instead of standing up or remote control

Voice control makes classic controls or a remote control superfluous. Instead of a separate remote control for each television, DVD player or lighting control, the most important devices can also be controlled centrally by voice input, e.g. via a central media control system with corresponding interfaces from our partners. This saves the search for the right remote control.

Benefits for your company

Customised solution

Our voice control systems are scalable to any degree and can be individually adapted to your application scenario. One focus of Fraunhofer voice control is on robust systems with ambient microphones. The microphone does not have to be immediately near to the mouth. This allows a customised connection to your applications, end devices or even existing systems. The vocabulary is freely definable.

Opening up new customer groups

Fraunhofer IDMT's voice control breaks down boundaries. The user communicates naturally by speech and receives immediate feedback. This makes complex systems and devices reliably operable even for target groups that are not familiar with technology, or they can be controlled without contact in sterile environments.

Cost savings thanks to efficient development

Benefit from the expertise of the Fraunhofer IDMT's Oldenburg Branch for Hearing, Speech and Audio Technology HSA and integrate the latest speech recognition technologies into your products, even without your own experience in the field of speech processing.

Reliable operation for satisfied customers

A new, scalable detection method for voice commands is characterised by reliability and robustness against noise and room influences, even with microphones installed in the room (ambient) and at a distance from the user. It reduces the false alarm rate, expands the application possibilities and increases customer satisfaction.

Application fields

  • Industrial applications and documentation
  • Consumer Electronics
  • Home Electronics
  • Home automation
  • Mobile applications (»apps«)
  • Security technology and emergency call systems




  • Scalable range of functions
  • Connection to various applications and end devices possible
  • Runs on different platforms (PC, embedded systems)
  • Dialogue-capable
  • Speaker-independent use
  • Ambience and individual microphoning
  • Multi-channel miking
  • Robust against external noise and room influences such as traffic, grass mowers, room reverberation and echo
  • Multi-channel signal processing
  • Directional filtering (beamforming)
  • Scalable vocabulary


Technical Data


  • Scalable, modular combination of the various signal enhancement technologies (directional filtering, de-noising, echo reduction, reverberation suppression, etc.) with the speech control technologies.
  • Use of innovative, auditory-motivated speech features from research for speech recognition to maximise robustness against acoustic disturbances


Further Information

»Help!« - Reliable call for help detection

In case of a call for help or an alarming noise, such as broken glass, quick action is required. However, full-time supervision is not always possible at home or in care. In production or even at individual workplaces, there may not be a colleague close enough to call help.

Oldenburg Branch for Hearing, Speech and Audio Technology HSA

Founded in 2008 as a project group, the Fraunhofer Institute for Digital Media Technology IDMT’s Branch for Hearing, Speech and Audio Technology HSA stands for market-oriented research and development with a focus on the following areas:

  • Speech and event recognition
  • Sound quality and speech intelligibility
  • Mobile neurotechnology and systems for networked healthcare

With in-house expertise in the development of hardware and software systems for audio system technology and signal enhancement, over 90 employees at the Oldenburg site are responsible for transferring scientific findings into practical, customer-oriented solutions.

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.