Siemens Audiologische Technik Gmbh

Siemens Medical Instruments Pte. Ltd.

Sivantos Pte. Ltd.

Alexander Sutor

Christian Weistenhöfer

Reinhard Lerch

Tom Weidner

Bassem Baffoun

Thorsten Albach

An acoustic actuator includes a support layer, in which a self-supporting structure is defined and connected to the support layer by at least two suspensions, at least one magnetostrictive layer which has been disposed on the support layer and is provided at least in part on the self-supporting structure, and a device for generating a magnetic field in the magnetostrictive layer. The way in which the loudspeaker works is based on the magnetostrictive effect, which results in a change in the dimensions of the self-supporting structure in an alternating magnetic field. This causes the self-supporting structure to oscillate. A method for producing an acoustic actuator is also provided.

Magnetostrictive microloudspeaker

In hearing devices, more particularly in hearing aids, it is desirable to be able to design an earpiece for generating sound in the audible range which is as small as possible. Such an earpiece can then be worn comfortably on an ear or in an auditory canal. A sound transducer for the hearing device disclosed here may be formed as a micro-electromechanical system and the transducer enables generation of an acoustic signal with little distortion. Provision is made for a hearing device with a sound transducer, which has a field generation apparatus for generating an electric or magnetic field and an emission apparatus for generating sound. Here, the emission apparatus has a multiplicity of fingers that are penetrated by the field of the field generation apparatus, wherein the shape of the fingers can be changed by means of the field of the field generation apparatus in order to generate the sound.

Hearing device with a sound transducer and method for producing a sound transducer

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Erlangen, Germany

Alexander Sutor