Patent ID: 11895461
Assignee: SONY GROUP CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 18:
19. A calibration method of an acoustic reproduction system, including:
a sound producing device configured to emit a directional sound;
a sound reflector positioned between a viewer and a viewing target by the viewer and having a plurality of sound reflecting surfaces that reflects the directional sound emitted by the sound producing device, wherein
the plurality of sound reflecting surfaces have mutually different inclination directions;

the sound producing device is further configured to emit the directional sound from a ceiling side to a first sound reflecting surface of the plurality of sound reflecting surfaces and from a floor side to a second sound reflecting surface of the plurality of sound reflecting surfaces; and
a control unit configured to control an incident angle of the directional sound on the plurality of sound reflecting surfaces, the calibration method comprising:
learning a change in a sound pickup signal of the directional sound reflected by the plurality of sound reflecting surfaces with respect to a change in the incident angle, and
adjusting the incident angle based on a result of the learning.