Patent · US Expired

Method for producing a constant sound pressure level in hearing aids and corresponding hearing aid

US6529607B1 · kind B1 · utility

5Cited by

7References

14Claims

0Family size

Assignee

Siemens Audiologische Technik GmbH · DE

Inventors

Ullrich Sigwanz · Eschborn, DE
Frank Wagner · Reiskirchen, DE

Key dates

Filing date	Nov 28, 2001
Grant date	Mar 4, 2003
Priority date	—
Expiry date	Nov 28, 2021

Classification

Technology area (CPC H)Electricity
CPC primaryH04R25/356
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

In a method and apparatus for producing constant sound pressure level in a hearing aid, a microphone, a receiver and a signal processing unit are provided. A switching unit produces constant sound pressure levels. The switching unit has an envelope generator for producing an envelope value of a signal value to be processed and a divider for calculating the ratio of the signal value and the envelope value as the signal to be output or further processed.

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