US 11,756,526 B2
Active sound effect generating device
Xun Wang, Wako (JP); Toshio Inoue, Wako (JP); and Takuma Maesaka, Wako (JP)
Assigned to Honda Motor Co., Ltd., Tokyo (JP)
Filed by HONDA MOTOR CO., LTD., Tokyo (JP)
Filed on Jan. 20, 2022, as Appl. No. 17/579,867.
Claims priority of application No. 2021-008744 (JP), filed on Jan. 22, 2021.
Prior Publication US 2022/0238094 A1, Jul. 28, 2022
Int. Cl. H04R 1/02 (2006.01); G10K 15/02 (2006.01); B60Q 9/00 (2006.01)
CPC G10K 15/02 (2013.01) [B60Q 9/00 (2013.01); H04R 1/025 (2013.01); H04R 2499/13 (2013.01)] 4 Claims
OG exemplary drawing
 
1. An active sound effect generating device that generates a sound effect in a vehicle compartment of a vehicle, the active sound effect generating device comprising one or more processors that execute computer-executable instructions stored in a memory, wherein the one or more processors execute the computer-executable instructions to cause the active sound effect generating device to:
acquire a vehicle speed;
set a fundamental frequency that changes in accordance with the acquired vehicle speed;
set a plurality of different sub-fundamental frequencies by multiplying the fundamental frequency by coefficients;
generate a plurality of different frequency components by multiplying each of the sub-fundamental frequencies by a plurality of different predetermined values;
generate, for each of the sub-fundamental frequencies, tone signals including a plurality of frequency components by adding the plurality of different frequency components generated from each of the sub-fundamental frequencies together; and
generate a sound effect signal that causes a speaker to output the sound effect by adding the tone signals generated for each of the sub-fundamental frequencies together.