Abstract: The operation of a hearing aid (10) or bearing aid system (10, 11) is to be improved. It is proposed here that the acoustic auditory environment in which the hearing aid (10) or hearing aid system (10, 11) is found is analyzed and one of the adjustment functions dependent on the relevant auditory situation is assigned to at least one control element (7; 12-15) as a function of the auditory situation detected in this way. The adjustment possibility of the hearing aid (10) is thereby restricted to the adjustment possibilities which are meaningful to the relevant auditory situation.

Abstract: It is intended that the switching on and off of a hearing aid (I) should be made more user-friendly. To this end the hearing aid (I) is fitted with a temperature sensor (TS) to detect the body heat of the hearing aid wearer and therefore that the hearing aid is inserted in the auditory canal. The hearing aid is then switched on and off again based on the temperature signal. As an alternative to the temperature sensor, it is possible to use a pressure sensor to detect contact pressure of the hearing aid housing on the auditory canal, a resistance sensor to detect an electrical load resistance as a function of volume or an acoustic sensor to detect a sound level. It is also possible to switch the hearing aid (I) on and off wirelessly using a remote control.

Abstract: In a hearing device with multiple microphones, and a signal generation method, the dynamic range of hearing devices is improved by using a combination including a silicon microphone and an electret microphone for the hearing device input. Low frequencies thus can be acquired by the silicon microphone and high frequencies can be acquired by the electret microphone, in order to generate a wide-band hearing device input signal. The fact that a silicon microphone possesses a lower internal noise than a conventional electret microphone at low frequencies is utilized.

Abstract: In the case of a hearing aid device which can be worn in the ear or a hearing aid device with a otoplastic which can be worn in the ear, the penetration of direct sound through a ventilation channel of the hearing aid device or of the otoplastic is prevented. An acoustic signal is picked up from the ventilation channel via a second microphone in a first region of the ventilation channel and phase-shifting it in a filter device in such a way that the direct sound is at least largely eliminated after the phase-shifted signal is emitted into the ventilation channel via a second earphone. The invention offers the advantage that an enlargement of the cross section of the ventilation channel is made possible as a result, even to provide an open supply, without disturbing direct sound getting into the auditory canal of the person wearing the hearing device.

Abstract: In the case of a hearing aid device which can be worn in the ear or a hearing aid device with a otoplastic which can be worn in the ear, the penetration of direct sound through a ventilation channel of the hearing aid device or of the otoplastic is prevented. An acoustic signal is picked up from the ventilation channel via a second microphone in a first region of the ventilation channel and phase-shifting it in a filter device in such a way that the direct sound is at least largely eliminated after the phase-shifted signal is emitted into the ventilation channel via a second earphone. The invention offers the advantage that an enlargement of the cross section of the ventilation channel is made possible as a result, even to provide an open supply, without disturbing direct sound getting into the auditory canal of the person wearing the hearing device.

Abstract: A method for producing an approximated partial transfer function can be used in an electroacoustic appliance for producing an environment correction transfer function that matches an appliance transfer function for the electroacoustic appliance to an acoustic environment, by a) providing a number of basic functions, which each have one basic characteristic of a spectral profile of partial transfer functions, b) providing the approximated partial transfer function by combination of the basic functions weighted by weighting factors, in that at the weighting factor is in each case determined for each basic function such that operation of the electroacoustic appliance is matched to an acoustic environment taking into account the approximated partial transfer function which is formed by the weighting factors and the basic functions, and c) storing the approximated partial transfer function in the electroacoustic appliance for use during operation.

Abstract: A hearing aid system has a hearing aid and an external processor unit, where the external processor unit is permanently allocated to a specific hearing environment. The external processor unit is fashioned for remaining in the respective hearing environment long-term, and the signal processing of an acoustic input signal in the external processor unit is also specifically adapted to the respective hearing environment. There is preferably a wireless signal transmission between the hearing aid and the external processor unit.