Patent · US Expired

Circuit and method for adaptation of hearing device microphones

US7254245B2 · kind B2 · utility

1Cited by

6References

8Claims

0Family size

Assignee

Siemens Audiologische Technik GmbH · DE

Inventors

Georg-Erwin Arndt · Erlangen, DE
Joachim Eggers · Erlangen, DE
Thomas Hanses · Erlangen, DE
Torsten Niederdrank · Erlangen, DE
Hartmut Ritter · Fairview Avenue, DE
Gunter Sauer · Erlangen, DE

Key dates

Filing date	Mar 11, 2004
Grant date	Aug 7, 2007
Priority date	—
Expiry date	Oct 6, 2025

Classification

Technology area (CPC H)Electricity
CPC primaryH04R25/407
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

The microphones used in hearing devices normally possess different characteristic lines that are to be adapted to one another. For this purpose, the amplitude of an output signal of a first microphone and the amplitude of an output signal of a second microphone are measured. The output signal of the first microphone is subsequently filtered dependent on both measured amplitudes, such that the difference between the two output signals is reduced. One of the two microphones hereby serves as a reference, and an absolute normalization can be foregone.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.