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US 8,275,162 B2Granted
Method for operating a hearing device and microphone system for hearing device
AssigneeSiemens Medical Instruments Pte. Ltd.
InventorsRobert Bäuml, Jens Hain
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Abstract
A method for operating a hearing device, an associated microphone system comprising at least two omnidirectional microphones, and a hearing device are provided. The microphones emit microphone signals and are electrically interconnected with one another in order to form directional characteristics. A damping of the upper frequency range of the microphone signals is determined from the lower frequency range of the microphone signals. The impression of a wide-band directional microphone is produced as a result.
Claims12
A method for operating a hearing device, comprising:
- emitting, by a first omnidirectional microphone, a first microphone signal comprising a first lower frequency range signal and a first higher frequency range signal;
- emitting, by a second omnidirectional microphone , a second microphone signal comprising a second lower frequency range signal and a second higher frequency range signal;
- forming a directional characteristic signal from the first and second lower frequency range signals;
- and
- determining a damping of the first higher frequency range signal from the first lower frequency range signal and the directional characteristic signal.
2 more elements
A microphone system for a hearing device, comprising:
- a first omnidirectional microphone that emits a first microphone signal;
- a second omnidirectional microphone that emits a second microphone signal;
- a first device unit that separates the first microphone signal into a first higher frequency range signal and a first lower frequency range signal and that separates the second microphone signal into a second higher frequency range signal and a second lower frequency range signal;
- a second device unit that forms from the first lower frequency range signal and the second lower frequency range signal of the first and second microphone signals, respectively, a lower frequency range directional signal that comprises directional characteristics;
- a third device unit that determines a damping signal from a comparison of the first lower frequency range signal of the first microphone signal with the lower frequency range directional signal that comprises directional characteristics;
- a fourth device unit that damps the first higher frequency range signal of the first microphone signal with the determined damping signal;
- and
- a fifth device unit that adds the damped first higher frequency range signal and the lower frequency range directional signal to produce a total signal output having directional characteristics in the lower frequency range and damping applied in the higher frequency range.
5 more elements
A hearing device, comprising
- a microphone system, comprising:
- a first omnidirectional microphone that emits a first microphone signal,
- a second omnidirectional microphone that emits a second microphone signal,
- a first device unit that separates the first microphone signal into a first higher frequency range signal and a first lower frequency range signal and that separates the second microphone signal into a second higher frequency range signal and a second lower frequency range signal,
- a second device unit that forms from the first lower frequency range signal and the second lower frequency range signal of the first and second microphone signals, respectively, a lower frequency range directional signal that comprises directional characteristics,
- a third device unit that determines a damping signal from a comparison of the first lower frequency range signal of the first microphone signal with the lower frequency range directional signal that comprises directional characteristics, and
- a fourth device unit that damps the first higher frequency range signal of the first microphone signal with the determined damping signal, and
- a fifth device unit that adds the damped first higher frequency range signal and the lower frequency range directional signal to produce a total signal output having directional characteristics in the lower frequency range and damping applied in the higher frequency range.
5 more elements
Dependencies are inferred from the claim text.