Hearing device comprising an amplifier system for minimizing variation in an acoustical signal caused by variation in gain of an amplifier
US10560787B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2017 |
| Grant date | Feb 11, 2020 |
| Priority date | — |
| Expiry date | Oct 30, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2225/49
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The disclosure presents a method and an amplifier system for minimizing variation in an acoustical signal caused by variation in gain of an amplifier, comprising a battery for providing a supply voltage to the amplifier, a digital signal processor for providing the acoustical signal to the amplifier, a controller unit receiving an enablement signal when the supply voltage is in an offset mode, and based on the enablement signal requesting a measured voltage during a time period, and a first analog-to-digital converter configured for measuring the supply voltage to the amplifier when receiving the request from the controller unit or the first analog-to-digital converter is configured for measuring the supply voltage to the amplifier continuously, and where variations in the measured voltage relates to variations in the supply voltage during the time period. Furthermore, the controller unit is configured to predict offset modes (i.e. changes) in the supply voltage based on the enablement signals and a fitting of the measured voltages, and wherein the controller unit is configured to generate a compensating signal based on the fitting and transmit the compensating signal to the digita…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.