公开(公告)号：US20170192080A1

公开(公告)日：2017-07-06

申请号：US15315017

申请日：2015-05-22

Applicant: KOREA RESEARCH INSTITUTE OF STANDARDS AND SCIENCE

Inventor： Hyu-Sang KWON ,  WanHo CHO

IPC: G01S3/808 ,  G01R25/00 ,  G01R31/30 ,  H04R3/00

CPC classification number: G01S3/808 ,  G01H3/00 ,  G01R31/316 ,  G01S5/22 ,  G01S5/30 ,  G01S11/14 ,  G01S13/28 ,  H04R1/40 ,  H04R1/406 ,  H04R3/00 ,  H04R3/005 ,  H04R2430/23

Abstract: The present invention relates to a time delay estimation device. The time delay estimation device of the present invention includes a sound signal detection unit configured to detect sound signals through a plurality of microphones, a frequency domain conversion unit configured to convert the detected sound signals into signals of a frequency domain, and a time delay estimation unit configured to estimate a time delay on the basis of a slope of a phase difference between the sound signals converted into the frequency domain.