Siemens Audiologische Technik Gmbh

Werner Hohn

Raimund Martin

Reinhard Kern

In a hearing aid with a directional microphone system having a signal processing unit, an earphone and a number of microphones, the output signals of the respective microphones can be interconnected with one another with different weightings for generating an individual directional microphones characteristic by using one or more delay elements and the signal processing unit. The invention is also directed to a method for the operation of such a hearing aid.

Hearing aid with a directional microphone system as well as method for the operation thereof

A hearing aid that has an analog part with a Class D final amplifier stage for audio signal processing, a digital part with an interface, a memory stage as well as supply stage for generating the voltage and control signals. The hearing aid has a utilized integrated circuit which also includes a pre-amplifier stage with two inputs respectively connected to a microphone and a telephone coil, the signals from the two inputs being selectively pre-amplified individually or in common, with selectable or programmable gains. This gives the hearing aid a small structural size, a comprehensive functionality, versatile adaptability and especially low energy consumption.

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Uttenreuth, Germany

Werner Hohn