A vibrating actuator having two different resonant frequencies is disclosed. The vibrating actuator comprises a first moving part 210 having an arrangement of magnets 320. In one embodiment, the arrangement of magnets 320 comprises at least two magnets. The like poles of the magnets 320 face each other and the arrangement of magnets 320 has two outer poles 328. The vibrating actuator has a second moving part 210 having one or more coils 410. The one or more coils 410 are wound over the arrangement of the magnets 320 such that the first moving part 210 can freely slide into the second moving part 220. A chassis 110 is formed by two parts 170, and each part of the chassis 110 is cut to form a first elastic member 150 and a second elastic member 160.

A system and method for providing effective acoustic impedance matching for a broadband ultrasonic transducer device (UTD) by adding at least one impedance matching plate (IMP) and a shim to the UTD. The IMP is a flat plate with a grid of holes and the shim is disposed between the IMP and the ultrasonic transducer, e.g. piezoelectric transducer, of the UTD.

A system and method for providing effective acoustic impedance matching for a broadband ultrasonic transducer device (UTD) by adding at least one impedance matching plate (IMP) and a shim to the UTD. The IMP is a flat plate with a grid of holes and the shim is disposed between the IMP and the ultrasonic transducer, e.g. piezoelectric transducer, of the UTD.

A bone conduction device, including a transducer and a housing, wherein the housing is directly flexibly connected to the transducer at a dynamic component of the bone conduction device and directly flexibly connected to a static component of the bone conduction device. In an exemplary embodiment, the bone conduction device is a percutaneous bone conduction device.

A bone conduction device, including a transducer and a housing, wherein the housing is directly flexibly connected to the transducer at a dynamic component of the bone conduction device and directly flexibly connected to a static component of the bone conduction device. In an exemplary embodiment, the bone conduction device is a percutaneous bone conduction device.

An in-ear receiver can be used in a headset and/or hearing aid and includes a housing in which at least one ear canal section is configured to be inserted into an ear canal of a wearer when the in-ear receiver is used as intended. The housing defines at least one outer contour that is configured with at least in one section adapted to the ear canal of the wearer. The in-ear receiver includes a sound transducer arranged in the housing, and at least one resonant cavity, which is formed in the housing and is divided by the sound transducer into a front volume and a rear volume. The sound transducer is a MEMS sound transducer, and the front volume and/or the rear volume have/has an inner contour adapted to the ear canal.

An in-ear receiver can be used in a headset and/or hearing aid and includes a housing in which at least one ear canal section is configured to be inserted into an ear canal of a wearer when the in-ear receiver is used as intended. The housing defines at least one outer contour that is configured with at least in one section adapted to the ear canal of the wearer. The in-ear receiver includes a sound transducer arranged in the housing, and at least one resonant cavity, which is formed in the housing and is divided by the sound transducer into a front volume and a rear volume. The sound transducer is a MEMS sound transducer, and the front volume and/or the rear volume have/has an inner contour adapted to the ear canal.

An actuator for exciting a component of a motor vehicle with vibrations. The actuator has a housing, an electrical coil and a magnet that is movable to a limited extent in the housing.

A bone conduction device, including a transducer and a housing, wherein the housing is directly flexibly connected to the transducer at a dynamic component of the bone conduction device and directly flexibly connected to a static component of the bone conduction device. In an exemplary embodiment, the bone conduction device is a percutaneous bone conduction device.

A bone conduction device, including a transducer and a housing, wherein the housing is directly flexibly connected to the transducer at a dynamic component of the bone conduction device and directly flexibly connected to a static component of the bone conduction device. In an exemplary embodiment, the bone conduction device is a percutaneous bone conduction device.