Title:
SIGNAL PROCESSING SYSTEM, SIGNAL PROCESSING METHOD, AND SIGNAL PROCESSING PROGRAM
Document Type and Number:
WIPO Patent Application WO/2023/032471
Kind Code:
A1
Abstract:
Provided is a signal processing system comprising: an adaptive decimation filter device having a decimation filter for outputting an output signal obtained by downsampling an input signal, and a reflected noise detection unit for detecting the magnitude of reflected noise which is noise reflected at a frequency less than the Nyquist frequency in the output signal of the decimation filter due to the downsampling; and a signal processing device comprising a filter control unit for adjusting the order of the decimation filter on the basis of the magnitude of the reflected noise, and an adaptive filter unit for performing filter processing on the output signal of the decimation filter.
Inventors:
ICHIHARA EIZO (JP)
KAI YUSUKE (JP)
KAI YUSUKE (JP)
Application Number:
PCT/JP2022/027331
Publication Date:
March 09, 2023
Filing Date:
July 11, 2022
Export Citation:
Assignee:
ASAHI KASEI MICRODEVICES CORP (JP)
International Classes:
H03H21/00; G10K11/178; H03H17/00; H03H17/06
Foreign References:
| JP2000092141A | 2000-03-31 | |||
| JP2010161635A | 2010-07-22 | |||
| JPS63232587A | 1988-09-28 | |||
| JPH01235490A | 1989-09-20 |
Attorney, Agent or Firm:
RYUKA IP LAW FIRM (JP)
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