Title:
ADAPTIVE DELAY DIVERSITY FILTER, AND ECHO CANCELLING DEVICE AND METHOD USING SAME
Document Type and Number:
WIPO Patent Application WO/2022/034967
Kind Code:
A1
Abstract:
The present invention relates to a novel type of adaptive filter, and an echo cancelling device and method using same, and provides an adaptive delay diversity filter for coping with a situation in which the variation of time delay between a reference signal and a target signal of the adaptive filter is large. The adaptive delay diversity filter includes a plurality of sub-filters, wherein each of the plurality of sub-filters uses a reference signal acquired by applying different time delay values to the reference signal as an input to generate an output through filtering and selects the best output value among the generated output values of the plurality of sub-filters as an output value of the adaptive delay diversity filter. In addition, the adaptive delay diversity filter includes a means for reducing the amount of computation.
Inventors:
YUN DONG UN (KR)
Application Number:
PCT/KR2020/014484
Publication Date:
February 17, 2022
Filing Date:
October 22, 2020
Export Citation:
Assignee:
AUZDSP CO LTD (KR)
International Classes:
H04B3/23; H03H21/00
Foreign References:
| KR20190034807A | 2019-04-03 | |||
| KR20150096424A | 2015-08-24 | |||
| KR20100116693A | 2010-11-01 | |||
| KR20130076947A | 2013-07-09 | |||
| KR20170052056A | 2017-05-12 |
Attorney, Agent or Firm:
HANYANG PATENT FIRM (KR)
Download PDF: