Intelligent Control and Design of Acoustic Transducers

Research work in the area of smart actuator-sensor systems focuses in particular on (MEMS) loudspeakers and microphones, but also goes beyond this. Current developments deal with adaptive signal processing algorithms for intelligent control of actuators and actuator networks as well as signal pre-processing for sensors using AI-based methods and domain knowledge.

In the loudspeaker field, miniaturization is one of the major challenges when it comes to the efficiency of a loudspeaker. Fraunhofer IDMT is meeting this challenge by developing intelligent control algorithms for energy-efficient and miniaturized loudspeakers. Innovative loudspeakers based on microelectromechanical systems, so-called MEMS loudspeakers, offer unsurpassed potential when it comes to high fidelity and low energy consumption. Together with the Fraunhofer Institutes ISIT and IPMS, Fraunhofer IDMT develops various MEMS loudspeakers and uses intelligent signal processing algorithms to ensure outstanding sound with maximum performance.

With its many years of expertise in the field of loudspeaker development, the Fraunhofer IDMT is also your partner for the sound optimization of electroacoustic loudspeakers and we work with you to develop new loudspeaker technologies, from individual loudspeakers to loudspeaker arrays (e.g. for beamforming) and multichannel loudspeaker systems (e.g. for 3D audio). 

Markets and Industries

  • Professional audio
  • Consumer electronics

Equipment

Equipped with state-of-the-art special rooms and laboratories we enable a a wide variety of acoustic measurements and investigations. Please feel free to contact us!

How to cooperate with us

  • Contract research up to prototype production
  • Reserach collaboration
  • Licenses for technologies and systems
  • Expert opinion reports and studies

Range of Services

  • Development of adaptive signal processing algorithms
  • Design of loudspeaker enclosures
  • Electroacoustic characterization, modeling and simulation of loudspeakers for various applications
detail view and simulation of a piezoelectric MEMS loudspeaker
detail view and simulation of a piezoelectric MEMS loudspeaker to investigate thermoviscous effects on the vibroacoustic resonance behavior of the piezo actuators
partial section and simulation of an electrostatic MEMS loudspeaker
partial section and simulation of an electrostatic MEMS loudspeaker to investigate the influence of frictional losses in small geometries on acoustic radiation.
cross-section and simulation of an electrodynamic full-range loudspeaker
cross-section and simulation of an electrodynamic full-range loudspeaker to investigate the vibroacoustic behavior as well as the resulting sound radiation

Solutions

 

Planar Speakers

great sound quality and space-saving, flexible design

 

Personal Sound Zones

Individual listening comfort

Research Projects

 

Research Project

Clean Air Acoustics

Acoustically optimized compact ventilation systems and air purification devices

 

Research Project

Metavib

Metamaterials for controlling vibroacoustics by means of the resonator effect

Research Project

Smart Speaker

Development of MEMS-based intelligent audio reproduction systems for mobile devices

Research Project

HiperSound

Development of cost-efficient and powerful MEMS loudspeakers based on CMOS-compatible technologies