Voice capture processing modified by back end audio processing state
US10720173B2 · kind B2 · utility
45Cited by
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18Claims
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Key dates
| Filing date | Feb 21, 2018 |
| Grant date | Jul 21, 2020 |
| Priority date | — |
| Expiry date | Feb 21, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L2021/02082
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Audio systems and methods are provided that receive a playback signal and produce an acoustic signal based upon the playback signal, and include microphone signal(s) for capturing and processing user voice signals. An echo reference signal is based upon the playback signal, and an echo canceler reduces echo components from the microphone signal(s). Functionality of the echo canceler is modified, such as by freezing an adaptive filter, in response to a non-linear condition in the audio playback, or a likelihood of such a non-linear condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.