Title:
ディジタルフィルタ、フィルタ処理方法及び記録媒体
Document Type and Number:
Japanese Patent JP6777095
Kind Code:
B2
Abstract:
The present invention addresses the problem of increasing the likelihood of making it possible to reduce the consumption of power necessary for filter processing and the amount of heat generated during filter processing. In order to overcome this problem, a second complex signal and a third complex signal are generated from a first complex signal in a frequency domain, the third complex signal being a complex conjugate of the second complex signal. Signal selection is performed from the plurality of types of complex signals having different amounts of change in signal amplitude. Processing is performed on the complex signal selected as the signal using a first filter coefficient and a second filter coefficient. The complex signals after filter processing are synthesized to generate a complex signal, which is then outputted.
Inventors:
Mitsufumi Shibayama
Application Number:
JP2017554169A
Publication Date:
October 28, 2020
Filing Date:
December 01, 2016
Export Citation:
Assignee:
NEC
International Classes:
H03H17/02
Domestic Patent References:
| JP2003115819A |
Foreign References:
| WO2015087495A1 |
Attorney, Agent or Firm:
Masahiko Desk
Naoki Shimosaka
Naoki Shimosaka