Sennheiser Electronic Gmbh & Co Kg

Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V.

André Michaelis

Heinz Epping

Vladimir Gorelik

Günter Pöppel

Peter Schreiber

Axel Grell

Markus Kuhr

Axel Haupt

Rolf Meyer

Wolfgang Niehoff

Manfred Hibbing

Sergey Kudaev

Alwin Harms

Dirk Hackbarth

Juergen Ihlemann

Jens Wildhagen

Till Teske-Fischer

Robert Konetzky

Burkhard Markmann

Ruth Weichenhain-Schriever

Meike Faulhaber

Katrin Huss

A method for manufacturing an electrodynamic transducer from a membrane system module and a magnet system module is disclosed. The membrane system module comprises an annular first chassis unit made by injection-molding and a diaphragm fixed thereon. A coil is fixed on a coil seat of the diaphragm. The magnet system module comprises a pole piece, a magnet and a yoke that each have a central hole, and a second chassis unit that is made by injection-molding and that fills the central holes in the pole piece, the magnet and the yoke. It surrounds the yoke at least partially, so that the pole piece, the magnet and the yoke are held. In the transducer, the membrane system module and the magnet system module are plugged together, wherein an annular recess on the lower side of the first chassis unit is arranged on a circumferential shoulder of the second chassis unit. This defines a position of the coil relative to the pole piece, to the magnet and to the yoke of the magnet system module.

Electrodynamic transducer and method for manufacturing an electrodynamic transducer

A microphone having a microphone capsule is provided. The microphone capsule has a diaphragm carrier, a diaphragm and an adhesive tape ring which is used to fasten the diaphragm to or in the diaphragm carrier. The microphone capsule is in the form of a dynamic sound transducer. A dynamic sound transducer for headphones, earphones or headsets is also provided. The sound transducer has a diaphragm carrier, a diaphragm and a moving coil which is coupled to the diaphragm. In a similar manner to the microphone capsule, the sound transducer has an adhesive tape ring between the diaphragm and the diaphragm carrier, which ring is used to fasten the diaphragm to the diaphragm carrier.

Microphone having a microphone capsule, dynamic sound transducer for headphones, earphones or headsets and method for producing a microphone capsule or a sound transducer

An ear canal earpiece comprising an electroacoustic sound transducer, a first sound guide unit for guiding the sound from the electroacoustic sound transducer, a second sound guide unit for prolonging the first sound guide unit, a third sound guide unit whose outside contour is matched to an inside contour of an ear canal of a user and which surrounds the second sound guide unit, and a sound wall in the region of the second sound guide unit, wherein the sound wall extends between the second and third sound guide units.

Ear canal earpiece and earmold unit for an earpiece

There is provided a wireless headphone unit having at least one electroacoustic transducer and a transmitting/receiving unit for wirelessly receiving first signals which contain audio signals to be reproduced on the electroacoustic transducer and a network identification unit for storing the network identification of the wireless headphone unit, wherein the transmitting/receiving unit is adapted for wirelessly transmitting the network identification of the headphone unit.

Wireless headphones and data transmission method

There is provided an in-ear earphone comprising a housing having at least one electroacoustic transducer, a control unit which outputs a test signal to the electroacoustic reproduction transducer for reproduction, and a tightness measuring unit for measuring a parameter representative of the tightness of a fit of the earphone in an ear canal. The control unit is adapted to output a second audio signal as confirmation of a tight fit of the earphone to the electroacoustic reproduction transducer for reproduction.

In-ear earphone

There is provided a dynamic sound transducer having a diaphragm system () which has at least a first and second metallized surface () which are separated from each other by an insulating surface (). The dynamic sound transducer further has a moving coil () with a coil wire (). An end of the coil wire is electrically conductingly connected to the first metallized surface () and the other end of the coil wire is electrically conductingly connected to the second metallized surface ().

Dynamic sound transducer and receiver

The invention relates to an arrangement for optically determining the distance of a reflecting surface that can be used, in particular, for determining slight variations in distance such as can frequently occur in vibrating systems. Such an arrangement can also be used as optical microphone or hydrophone. The arrangement according to the invention is designed in this case such that light from a light source is directed onto a reflecting surface via a first optical fiber, and light reflected therefrom is directed onto at least one statically arranged optical detector via the first optical fiber or at least one further optical fiber. An optical element collimating in the direction of the reflecting surface is arranged between the reflecting surface and the one or more optical fibers. Furthermore, at least two optical elements focusing in the direction of the reflecting surface and whose optical axes are aligned parallel to the optical axis of the collimating optical element and are arranged at constant spacings from one another are arranged above the reflecting surface.

Arrangement for the optical distance determination of a reflecting surface

Electrical contacting of fine wire

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Wedemark, Germany

André Michaelis