Hearing aid with beam forming properties

Hearing aid with beam forming properties

A hearing aid with beam forming properties, having at least two microphone channels (1a, 1b) for at least two microphones (2a, 2b), the microphone channels each comprising an analog to digital converter (3a, 3b) and having at least one programmable or program controlled signal processor (5), as well...

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Hauptverfasser: HENNING HOUGAARD ANDERSEN, CARL LUDVIGSEN
Format: Patent
Sprache:eng
Schlagworte:
DEAF-AID SETS
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS
PUBLIC ADDRESS SYSTEMS
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creator HENNING HOUGAARD ANDERSEN
CARL LUDVIGSEN
description A hearing aid with beam forming properties, having at least two microphone channels (1a, 1b) for at least two microphones (2a, 2b), the microphone channels each comprising an analog to digital converter (3a, 3b) and having at least one programmable or program controlled signal processor (5), as well as a digital to analog converter, and at least one receiver and a battery for power supply. The hearing aid particularly comprises in each microphone channel (1a, 1b) a sigma-delta-type analog to digital converter (3a, 3b) including a digital low pas filter and a decimator 94) for converting a 1 Bit Stream of a high clock frequency into a digital word sequence of a lower clock frequency. At least one of the at least two microphone channels contains a controllable delay device (6) connected to the input side of the respective digital low pass filter and decimator (4) of the channel, the delay device (6) being controllable by the at least one signal processor (5). The delay device is preferably integrated into the sigma-delta-ADC (3).
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subjects DEAF-AID SETS
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS
PUBLIC ADDRESS SYSTEMS
title Hearing aid with beam forming properties
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