US 12,170,884 B2
Processing device and processing method
Yumi Fujii, Yokohama (JP); Hisako Murata, Yokohama (JP); Takahiro Gejo, Yokohama (JP); and Kuniaki Takachi, Yokohama (JP)
Assigned to JVCKENWOOD Corporation, Yokohama (JP)
Filed by JVCKENWOOD Corporation, Yokohama (JP)
Filed on Jul. 7, 2022, as Appl. No. 17/859,430.
Claims priority of application No. 2021-130085 (JP), filed on Aug. 6, 2021; and application No. 2021-130087 (JP), filed on Aug. 6, 2021.
Prior Publication US 2023/0040821 A1, Feb. 9, 2023
Int. Cl. H04R 3/04 (2006.01); H04R 3/00 (2006.01); H04R 5/027 (2006.01); H04R 5/04 (2006.01); H04S 1/00 (2006.01); H04S 7/00 (2006.01)
CPC H04S 7/307 (2013.01) [H04R 3/005 (2013.01); H04R 3/04 (2013.01); H04R 5/027 (2013.01); H04R 5/04 (2013.01); H04S 1/007 (2013.01); H04S 2400/15 (2013.01)] 8 Claims
OG exemplary drawing
 
8. A processing method comprising:
acquiring frequency characteristics of an input signal;
performing a smoothing processing so as to generate second spectral data smoother than first spectral data, the first spectral data being based on the frequency characteristics;
calculating a first difference value corresponding to a difference between the second spectral data and the first spectral data in a first band;
a first compressing, based on the first difference value, the second spectral data;
generating a filter, based on compressed second spectral data; and
a second compressing including:
calculating a second difference value corresponding to a difference between third spectral data generated by first compressing and a predetermined reference value in a gain of spectral data; and
compressing the third spectral data, based on the second difference value, and wherein the filter comprises a spatial acoustic filter, corresponding to spatial acoustic transfer characteristics, for improving sound quality.