Title:
ECHO ELIMINATION DEVICE AND ECHO ELIMINATION METHOD
Document Type and Number:
WIPO Patent Application WO/2024/070079
Kind Code:
A1
Abstract:
This echo elimination device comprises: an adaptive filter updating unit that updates an adaptive filter for estimating an echo signal; a reference signal storing unit that stores, as a reference signal, a remote-terminal signal having a given period; a specified value calculating unit that parallelly calculates, on the basis of the reference signal, a plurality of specified values corresponding to the respective ones of a plurality of mutually different period lengths; a specified value storing unit that stores the plurality of specified values; and a period length determining unit that determines one of the plurality of period lengths as a first period length. The adaptive filter updating unit updates the adaptive filter by use of a first specified value that is the specified value corresponding to the first period length determined by the period length determining unit.
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Inventors:
OHASHI HIROMASA
ARAKI JUNJI
ARAKI JUNJI
Application Number:
PCT/JP2023/022826
Publication Date:
April 04, 2024
Filing Date:
June 20, 2023
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H04B3/23
Attorney, Agent or Firm:
Eikoh, P.C. (JP)
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