Title:
信号特徴抽出装置、信号特徴抽出方法、およびプログラム
Document Type and Number:
Japanese Patent JP6804554
Kind Code:
B2
Abstract:
The purpose of the present invention is to reduce leakage of an output signal between band-pass filters and in the time axis direction. A signal input part 1 vectorizes an input signal x(n). An extended impulse response matrix generation part 2 generates an extended impulse response matrix Hin which impulse response vectors using impulse response sequences of band-pass filters as elements are extended in the time axis direction. An expansion coefficient calculation part 3 calculates an expansion coefficient vector ^y(n) using an input signal vectorsx(n) and the extended impulse response matrix H. A signal output part 4 outputs at least one of expansion coefficients corresponding to a center vector of the extended impulse response matrix Hof the expansion coefficient vector ^y(n).
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Inventors:
Suehiro Shimauchi
Kana Eguchi
Tsutomu Yabuuchi
Kazuhiro Yoshida
Osamu Mizuno
Kana Eguchi
Tsutomu Yabuuchi
Kazuhiro Yoshida
Osamu Mizuno
Application Number:
JP2018555017A
Publication Date:
December 23, 2020
Filing Date:
December 05, 2017
Export Citation:
Assignee:
Nippon Telegraph and Telephone Corporation
International Classes:
H03H17/02
Domestic Patent References:
| JP2007054471A | ||||
| JP2013113866A |
Other References:
J CHEBIL, et al.,Classification of Heart Sound Signals Using Discrete Wavelet Analysis,International Journal of Soft Computing,米国,IEEE,2007年,2(1),pp.37-41
V X AFONSO, et al.,ECG Beat Detection Using Filter Banks,IEEE Transactions on biomedical engineering,IEEE,1999年,46(2),pp.192-202
V X AFONSO, et al.,ECG Beat Detection Using Filter Banks,IEEE Transactions on biomedical engineering,IEEE,1999年,46(2),pp.192-202
Attorney, Agent or Firm:
Naoki Nakao
Yukio Nakamura
Yoshimura Munehiro
Yukio Nakamura
Yoshimura Munehiro