Apparatus and methods for combining audio compression and feedback cancellation in a hearing aid
US6434246B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 2, 1998 |
| Grant date | Aug 13, 2002 |
| Priority date | — |
| Expiry date | Oct 26, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2225/43
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention combines audio compression and feedback cancellation in an audio system such as a hearing aid. The feedback cancellation element of the present invention uses one or more filters to model the feedback path of the system and thereby subtract the expected feedback from the audio input signal before hearing aid processing occurs. The hearing aid processing includes audio compression, for example multiband compression. The operation of the audio compression element may be responsive to information gleaned from the feedback cancellation element, the feedback cancellation may be responsive to information gleaned from the compression element, or both.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.