Device for detecting, monitoring, and cancelling ghost echoes in an audio signal
US10186279B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Jun 21, 2017 |
| Grant date | Jan 22, 2019 |
| Priority date | — |
| Expiry date | Jun 21, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L2021/02082
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In some examples, devices for detecting and measures a ghost echo current in an audio signal are described. For instance, the device may be configured to sample a current of an audio signal, compare with an expected current, and determine an impulse response of the ghost echo current based on the sampled current and the expected current. The device may also be configured to reduce the ghost echo current using the impulse response.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.