US 12,490,003 B2
Sound reproduction device
Ryota Miyanaka, Osaka (JP); Hiroyuki Kano, Hyogo (JP); Kota Nakahashi, Osaka (JP); Daiki Cho, Osaka (JP); Yuki Odoriba, Osaka (JP); and Kaname Tomita, Osaka (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGMENT CO., LTD., Osaka (JP)
Filed by PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Filed on May 9, 2023, as Appl. No. 18/144,975.
Claims priority of provisional application 63/345,592, filed on May 25, 2022.
Claims priority of provisional application 63/340,564, filed on May 11, 2022.
Prior Publication US 2024/0080595 A1, Mar. 7, 2024
Int. Cl. H04R 1/02 (2006.01); H04R 3/12 (2006.01); H04R 1/10 (2006.01)
CPC H04R 1/025 (2013.01) [H04R 3/12 (2013.01); H04R 1/1083 (2013.01); H04R 2499/13 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A sound reproduction device configured to store a head of a user and reproduce sound, the sound reproduction device comprising:
a headrest portion comprising a front surface;
a partition portion comprising an inner surface, the partition portion being attached to the headrest portion so as to protrude forward relative to the front surface of the headrest portion such that a storing space capable of storing the head of the user is defined by the inner surface and at least a part of the front surface of the headrest portion;
a microphone provided in the partition portion;
at least one speaker comprising an output surface configured to allow sound to be output therefrom, the at least one speaker being disposed in the partition portion such that the output surface is directed toward the storing space;
a sound absorbing structure provided in at least a part of the inner surface of the partition portion, the part of the inner surface of the partition portion excluding a region corresponding to the output surface of the at least one speaker;
a processor; and
a memory storing instructions that, when executed by the processor, cause the sound reproduction device to perform operations, the operations comprising:
acquiring sound data;
acquiring, from the microphone, an environmental sound signal of environmental sound around the microphone;
generating a reproduced sound signal to be output to the at least one speaker based on the sound data;
controlling the reproduced sound signal based on the environmental sound signal;
acquiring a calculated reproduced sound signal by calculating a data signal of sound from the at least one speaker at a position of the microphone, based on: a transfer characteristic between the at least one speaker and the microphone; and the reproduced sound signal;
acquiring a noise sound signal based on the environmental sound signal and the calculated reproduced sound signal; and
acquiring an estimated sound signal by estimating sound leaking from the storing space based on a comparison between the calculated reproduced sound signal and the noise sound signal.