Abstract: To allow bidirectional data communication to be realized in hearing aids which have only a restricted installation space, the earphone, i.e. the electroacoustic transducer unit, is used as the transmitter and the telephone coil as the receiver for high-frequency signal components. This makes it possible to dispense with the installation of an additional antenna, generally of a large volume, that is optimized for transmitting and receiving operations. If appropriate, a small additional antenna may also be used purely as a receiving antenna for high-frequency signals.

Abstract: The space in hearing device housings (1, 2) is to be enabled to be used more intensively. To this end, the invention pro-poses dispensing with a separate microphone housing and embodying said housing in one piece with the hearing device housing. To reduce the microphone's sensitivity to body sound the corresponding attenuation can be provided in the hearing device shells or the non body-sound-sensitive Silicon microphones (5).

Abstract: The process of adapting a hearing aid to its wearer is to be simp lified. To this end the acoustic conditions in the auditory canal, especially the acoustic impedance, are estimated by measuring the input impedance of the earpiece on the hearing aid. For adjusting the hearing aid it is worthwhile using the mechanical resonance of the system of hearing aid and auditory canal which can be detected with the aid of the input impedance. This is produced by a simplified equivalent circuit diagram from which the corresponding acoustic variables can be obtained.

Abstract: A remote control for a hearing aid device prevents incorrect operation by having operating elements that effect a signal transmission from the remote control to a hearing aid device disposed on a first side of the remote control housing, and operating elements that additionally effect a signal transmission from the hearing aid device back to the remote control disposed on a second housing side of the remote control. The first and second housing sides are disposed in an easily tactilely distinguishable relation to each other, such as by being substantially orthogonal. The different functions of the operating elements and therefore can be differentiated purely by contact with the remote control.

Abstract: An energy-saving communication is made available in a hearing aid system. For this purpose the individual communication participants are given different priorities, by using data packets of variable length in the communication. The longer data packets of higher priority prevail when the transmission requests of lower priority are paused as long as the communication channel is busy. In this manner a suitable communication can be structured in a hearing aid system comprising, for example, of two hearing aids and a remote control.

Abstract: A cost-effective panoramic scanner provides for the three-dimensional detection of objects, and in particular for the detection of ear impressions. For this purpose, a pattern is projected onto an object to be detected via a projector that generates an object image via a camera, the object image containing images of markings that enable an unambiguous assignment of the position of the object with respect to the projector and the camera. Since an exact synchronization of the rotary movement of the object with the recording of the object images is not necessary by virtue of the markings, the precision of the mechanism used is relatively nonstringent.

Abstract: For the automatic choice of a hearing program, a hearing aid (1) detects whether it is located in the immediate vicinity of an external transmitter (10, 10?). The transmitter (10, 10?) generates a transmitter-specific signal so that an assignment of different transmitters can be made. In addition, in the case of the hearing aid (1), the current time of day and the day of the week can also influence the choice of the active hearing program.

Abstract: The sound quality of a hearing aid device with a directional microphone system is to be improved. For this purpose, the microphone signals of microphone units with directivities of different orders are analyzed and divided into frequency bands. A weighting of the microphone signals that are emitted from the microphone units with directivities of different orders takes place in the individual frequency bands. The weighting takes place in particular in dependence on the signal level of the microphone signals.

Abstract: Microphone equalization is implemented in a directional microphone system of the second or a higher order with at least three omnidirectional microphones. Initially, the signal levels of the microphone signals generated by the three omnidirectional microphones are compensated. The phase is subsequently varied in one of the three microphone signals until the signal levels of the directional microphones of the first order that are formed from the three omnidirectional microphones, are also compensated.

Abstract: The microphones used in hearing devices normally possess different characteristic lines that are to be adapted to one another. For this purpose, the amplitude of an output signal of a first microphone and the amplitude of an output signal of a second microphone are measured. The output signal of the first microphone is subsequently filtered dependent on both measured amplitudes, such that the difference between the two output signals is reduced. One of the two microphones hereby serves as a reference, and an absolute normalization can be foregone.

Abstract: A hearing aid device to be worn in the ear or a hearing aid device with otoplastic to be worn in the ear, has at least two aeration channels in combination with flow resistances arranged in the aeration channels that promote a flow from the enclosed auditory canal volume toward the outside in at least one aeration channel and a flow into the enclosed auditory canal volume in at least one other aeration channel. A flow through the enclosed auditory canal volume results therefrom, so that an air exchange ensues. This improves the wearing comfort of the hearing aid device and contributes to the prevention of diseases caused by a poor ventilation of the auditory canal.

Abstract: The communication device in a hearing aid needs to be optimized with respect to spatial requirements and power consumption. To this end, provision is made for an inductor in an oscillator circuit to be used simultaneously as an antenna. Besides reducing the number of components, this also reduces the power consumption. Further optimization in terms of energy can be achieved by virtue of a comparator being used to actuate a controllable current source such that energy is fed into the oscillator circuit only during a half-cycle.

Abstract: For a hearing-impaired person provided with a hearing aid device with which sound acquisition ensues outside of the auditory canals of the person, the localization capability with regard to a signal source is lost. To compensate the information loss that occurs due to the acquisition of an acoustic signal outside of the auditory canals, in the signal processing in the hearing aid device of an acoustic input signal acquired by at least one microphone of the hearing aid device, the transfer function of the head or of the external ear is taken into account between the position at which the microphone is located and a position in the auditory canal of the hearing device user. The natural location capability of a person to localize a signal source in space thus is not lost given treatment with a hearing aid device that is not worn in the auditory canal.

Abstract: For improving the automatic switching and control of hearing aid devices in view of respective auditory situation, the acoustic signal picked up by the hearing aid device is analyzed for noise signals. The control of the hearing aid device then ensues on the basis of the analyzed noise signals. Individual transmission parameters or entire hearing programs of the hearing aid device can be controlled or switched.

Abstract: A transmission system for rearing devices is provided that, in spite of having less energy available, allows for a transmission relatively safe from interference. Such a gearing device has a self-exciting oscillation circuit as an antenna that enables an inductive coupling in the long-wave range. Additionally, or alternatively, a hearing device is provided with a receiving device that comprises a median filter device with which a median value can be determined from a plurality of values for noise signal prevention.

Abstract: In order to improve the feedback compensation in hearing d vices th xtent of compensation is controlled. An estimated signal is acquired with which the intensity of the feedback signal is estimated. The damping of the feedback signal is thus controlled using the estimated signal. With this, it is, among other things, possible to disconnect the feedback compensation given no present feedback such that artifacts can be prevented.

Abstract: Due to the clocked mode of operation, electromagnetic interference signals originate from digital hearing aid device or hearing device systems with the clock frequency and its harmonics. These can disrupt the wireless signal transmission between the hearing aid device or hearing device system and a further device. To prevent these disruptions, the invention provides a jitter unit that is connected with the clock generator and causes frequency oscillations in the clock signal. The interference signals caused by the clock signal are thereby lowered with respect to their amplitudes, whereby an interference-free signal transmission is enabled between a transmitting and/or receiving unit connected with a hearing aid device and an external device.

Abstract: In a microphone with a microphone housing for arrangement in a hearing aid to be worn behind the ear having a hearing aid housing, respective sound entry nozzles with respective sound entry apertures are arranged at two opposite sides of the microphone housing. The sound entry nozzles discharge into a chamber at a side of the microphone membrane. The sound entry nozzles are introduced into the respective sound entry apertures in opposite sides of the hearing aid housing, and when the hearing aid is worn, the sound entry aperture of one sound entry nozzle is disposed approximately distally from the head and the sound entry aperture of the other sound entry nozzle is disposed approximately proximally relative to the head. The microphone is space-saving and is simple to arrange in the hearing aid.