Abstract: A method for high-frequency signal transmission between a transmitter and a receiver. A signal for generating a natural electromagnetic alternating field is linked with HF transmission signal, and the HF transmission signal is extracted from the linked signals.

Abstract: A wireless telephone apparatus, in particular a mobile radio telephone or hand-set, a cordless telephone or the like, comprises an upper shell containing breakthroughs for a keyboard, and lower shell. In the area of the upper shell and the lower shell, there is at least one electrically and magnetically conducting screening element for screening the head of the use against EMV. According to one embodiment of the invention, the screening element is provided in the form of a lining of the upper shell or lower shell, for example in the form of an MU-metal sheet.

Abstract: An apparatus for producing a natural electromagnetic alternating field close to a user's body. The natural electromagnetic alternating field is similar to an area of pleasant weather (Sferics), to compensate for electrical stress acting on a user. The field can also be used for positive stimulation of the well-being of the user. The apparatus has a means for producing the alternating field and a means for transmitting the alternating field.

Abstract: The invention relates to a headphone with one right housing and one left housing, which are associated with a user's ears. These housings are provided-with acoustic baffles in which there. are disposed dynamic sound transducers, each of which comprises a tweeter and a mid/woofer disposed coaxially therewith. To ensure that the localization of auditory events reproduced by this headphone can be controlled selectively, the acoustic baffle in each housing is provided with a first high damping portion which, relative to the center of the sound transducer, covers a region of more than 170 degrees and less than 340 degrees of the mid/woofer. The remaining region is a cutout for the tweeter and leaves uncovered a substantially V-shaped region with an apex angle of smaller than 170 degrees and larger than 20 degrees. There is also a second high damping portion, which is disposed in the region of the apex of the V-shaped region which leaves between 5% and 50% of the tweeter covered.

Abstract: The invention relates to a low-radiation headphone with right and left acoustic irradiation housings corresponding to the ears of the user, with each of the housings having an acoustic baffle (10″) comprising MU-metal and accommodating dynamic audio transducers. The acoustic baffle (10″) is formed in a manner permeable to sound in front of the audio transducers, and has a radiation dissipation zone (20) pointing at the temples of the user. The zone (20) dissipating radiation is provided through a greater density of the MU-metal than in the remaining area of the acoustic baffle (10″) that is permeable to sound. The acoustic baffle (10″) as a whole consists of MU-metal sheet and the audio transducer is perforated in one area (17), but otherwise solid. The radiation dissipation zone (20) is formed in the perforated area of the MU-metal sheet as one piece.