US 11,991,509 B2
Audio processing device and method
Masatake Onishi, Yokohama (JP); Akihide Shigihara, Yokohama (JP); Toshimitsu Uchiyama, Yokohama (JP); Wataru Murata, Yokohama (JP); and Kiyofumi Maruyama, Yokohama (JP)
Assigned to JVCKENWOOD CORPORATION, Yokohama (JP)
Filed by JVCKENWOOD Corporation, Yokohama (JP)
Filed on May 24, 2022, as Appl. No. 17/751,913.
Claims priority of application No. 2021-087381 (JP), filed on May 25, 2021.
Prior Publication US 2022/0386024 A1, Dec. 1, 2022
Int. Cl. H04R 3/04 (2006.01)
CPC H04R 3/04 (2013.01) [H04R 2430/01 (2013.01)] 5 Claims
OG exemplary drawing
 
4. An audio processing method comprising:
increasing sound pressure with a first center frequency in an input audio signal as a first peak;
shifting the first center frequency between a preset lowest frequency on a lower frequency side of the first center frequency and a preset highest frequency on a higher frequency side of the first center frequency in such a way that the first center frequency is shifted from the preset lowest frequency to the preset highest frequency over a predetermined first time and is shifted from the preset highest frequency to the preset lowest frequency over a predetermined second time that is equal to or different from the predetermined first time;
decreasing sound pressure with a second center frequency on a lower frequency side of the first center frequency as a second peak, and with a third center frequency on a hitcher frequency side of the first center frequency as a third peak; and
shifting the first to third center frequencies while maintaining their relationship with each other.