Patent ID: 11880634
Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 7:
8. A volume control method for controlling at least one of a volume of a mobile object and a volume of an operation terminal, the mobile object including at least one of a directional microphone and a directional speaker, the operation terminal including at least one of a microphone and a speaker, and configured to control the mobile object, and the volume control method comprising:
determining, by a computer, whether or not at least one of the directional microphone and the directional speaker of the mobile object is facing toward the speaker of the operation terminal based on a position of the mobile object, an orientation of the mobile object, a sound picking-up angle of the directional microphone of the mobile object and an output angle of the directional speaker thereof, and a position of the operation terminal;
setting, by the computer, when at least one of the directional microphone and the directional speaker of the mobile object is facing toward the speaker of the operation terminal, a predetermined threshold as a distance threshold;
determining, by the computer, whether or not a distance between the mobile object and the operation terminal is equal to or shorter than the predetermined threshold based on the position of the mobile object and the position of the operation terminal; and
making, by the computer, when the distance is equal to or shorter than the predetermined threshold, at least one of the mobile object and the operation terminal reduce at least one of a volume of its microphone and a volume of its speaker.