The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 07, 2002
Filed:
May. 12, 1999
Fred Zoels, Altenthann, DE;
Siemens Audiologische Technik GmbH, Erlangen, DE;
Abstract
A hearing aid has a signal processing unit, an earphone and at least two microphones whose output signals are subtracted from one another in a first difference element in order to achieve a directional microphone characteristic, and a difference element subtracts average values of the output signals of the microphones and supplies a signal to an analysis/control unit for controlling the amplification of the output signal of at least one of the microphones that follows the second difference element. In a method for the operation of a hearing aid having automatic microphone balancing, following formation of average values proceeding from the output signals of the microphones, the deviation of the average values from one another is identified and the amplification of at least one output signal of a microphone is adjusted until coincidence of the average values occurs.