Title:
NOISE PROCESSING CIRCUIT, SIGNAL PROCESSING DEVICE, NOISE PROCESSING METHOD, AND RECORDING MEDIUM
Document Type and Number:
WIPO Patent Application WO/2024/069964
Kind Code:
A1
Abstract:
A noise processing circuit according to one embodiment of the present invention comprises: a detection unit that detects a sound source on the basis of a plurality of signals; a flag signal generation unit that generates a flag signal indicating a period in which the plurality of signals include a first signal component; a beamforming processing unit that, on the basis of the plurality of signals and the flag signal, generates a first signal by emphasizing the first signal component and generates a second signal by suppressing the first signal component; a noise model generation unit that generates, on the basis of the flag signal, a plurality of noise models corresponding to a spectrum of the first signal; a noise model selection unit that, on the basis of the flag signal, selects one of the first signal and the second signal and calculates similarity between a spectrum of the selected signal and each of the plurality of noise models, thereby selecting one of the plurality of noise models; and a spectrum subtraction unit that performs a spectrum subtraction process on the basis of the spectrum of the first signal and the selected noise model.
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Inventors:
TOKI SHOGO (JP)
KINOSHITA SATOSHI (JP)
FUJII TOSHIHIRO (JP)
KINOSHITA SATOSHI (JP)
FUJII TOSHIHIRO (JP)
Application Number:
PCT/JP2022/036788
Publication Date:
April 04, 2024
Filing Date:
September 30, 2022
Export Citation:
Assignee:
TDK CORP (JP)
International Classes:
H04R3/00; G10L21/0208; G10L21/0232; H04R1/40
Foreign References:
| JP2016042132A | 2016-03-31 | |||
| JP2003308092A | 2003-10-31 | |||
| JP2006047639A | 2006-02-16 | |||
| JP2003271191A | 2003-09-25 |
Attorney, Agent or Firm:
TSUBASA PATENT PROFESSIONAL CORPORATION (JP)
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