Title:
TRANSFER FUNCTION ESTIMATING DEVICE, METHOD, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2020/100340
Kind Code:
A1
Abstract:
This transfer function estimating device comprises: a correlation matrix calculation unit 43 for calculating the correlation matrix of N frequency domain signals y(f, l); a signal space base vector calculation unit 44 for deriving M vectors v1(f) through vM(f) in the eigenvector of the correlation matrix in decreasing order of corresponding eigenvalue; and a plurality of RTF estimation units 45 for deriving ti(f) through tM(f) that satisfy the relationship of expression (1), deriving a matrix D(f) that is not a zero matrix and that makes u1(f) through uM(f) defined by expression (2) sparse in the time direction, deriving ci,1(f) through cM,N(f) that satisfy the relationship of expression (3), and outputting c1(f)/c1,j(f) through cM(f)/cM,j(f), where j is an integer of 1 to N, as relative transfer functions.
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Inventors:
EMURA SATORU (JP)
Application Number:
PCT/JP2019/025835
Publication Date:
May 22, 2020
Filing Date:
June 28, 2019
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
H04R3/00; G10K15/00; H04R1/40
Foreign References:
| US7254199B1 | 2007-08-07 | |||
| JP2007215038A | 2007-08-23 |
Attorney, Agent or Firm:
NAKAO, Naoki et al. (JP)
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