Title:
ACOUSTIC SIGNAL ENHANCEMENT DEVICE, METHOD AND PROGRAM
Document Type and Number:
Japanese Patent JP2022123507
Kind Code:
A
Abstract:
To provide acoustic signal enhancement technology that optimizes an overall process.SOLUTION: An acoustic signal enhancement device consists of: a reverberation suppression unit 2 that receives, at each time t, an observed signal vector at the time t and an inverse matrix of a time-space covariance matrix obtained at time t-1, and generates a reverberation suppression signal vector corresponding to the observed signal vector; a sound source separation unit 3 that receives, at each time t, the generated reverberation suppression signal vector, and obtains an enhanced sound of sound source n and power of the sound source n; and a time-space parameter updating unit 4 that receives, at each time t, the power of the sound source n and the observed signal vector, and obtains the inverse matrix of the time-space covariance matrix corresponding to the sound source n.SELECTED DRAWING: Figure 4
Inventors:
NAKATANI TOMOHIRO
IKESHITA RINTARO
KINOSHITA KEISUKE
ARAKI AKIKO
UEDA TETSUYA
IKESHITA RINTARO
KINOSHITA KEISUKE
ARAKI AKIKO
UEDA TETSUYA
Application Number:
JP2021020858A
Publication Date:
August 24, 2022
Filing Date:
February 12, 2021
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE
International Classes:
G10L21/0272; G10L21/0208; G10L21/0308; G10L25/21
Attorney, Agent or Firm:
Naoki Nakao
Yukio Nakamura
Munehiro Yoshimura
Yukio Nakamura
Munehiro Yoshimura
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