Programmable multichannel hearing aid with adaptive filter
US5083312A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 1, 1989 |
| Grant date | Jan 21, 1992 |
| Priority date | — |
| Expiry date | Aug 1, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2225/43
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A hearing aid is programmable with dual-tone multiple-frequency signals, received through the hearing aid microphone, to adjust operating coefficients of signal conditioning circuitry in the aid. A DTMF receiver filters and detects DTMF tone pairs into digital words provided to a controller for decoding, some of the digital words representing programming instructions and others representing data. In accordance with the instructions, the controller conveys the data to memory operatively associated with a plurality of control ports to the signal conditioning circuitry, with operating coefficients of the conditioning circuitry determined by the contents of the memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.