Systems and methods for echo reduction
US9414162B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2014 |
| Grant date | Aug 9, 2016 |
| Priority date | — |
| Expiry date | Oct 16, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M9/082
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Systems and methods are provided for echo reduction. For example, first audio data associated with a current time unit is obtained, the first audio data being generated by an audio-acquisition device of a receiver based on at least information associated with a first audio signal acquired by the audio-acquisition device and a second audio signal output from an audio-playback device of the receiver, the second audio signal being output from the audio-playback device of the receiver based on at least information associated with second audio data transmitted previously by a sender before the current time unit; third audio data transmitted by the sender during a second time unit preceding the current time unit is obtained; and fourth audio data is obtained by performing echo reduction on the first audio data based on at least information associated with the third audio data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.