Title:
音波発信装置、音波発信プログラム、および音波発信方法
Document Type and Number:
Japanese Patent JP7259445
Kind Code:
B2
Abstract:
To provide a sound wave transmitting device capable of transmitting correct information and guiding a guiding object person to an appropriate direction, a sound wave transmitting program, and a sound wave transmitting method.SOLUTION: A sound wave transmitting device comprises: an identification signal generation part; a sound wave output part; a sound detection part; and a sound wave output control part. The identification signal generation part generates a prescribed identification signal. The sound wave output part outputs the prescribed identification signal by a sound wave of a preset frequency. The sound detection part detects a predetermined notification sound on the basis of the predetermined notification sound previously stored or stored by a self-learning and an external sound. The sound wave output control part changes a frequency used for the prescribed identification signal to a frequency in accordance with a prescribed speed of a mobile body when the prescribed notification sound is detected by the sound detection part.SELECTED DRAWING: Figure 3
Inventors:
Akihiro Takeshi
Shingo Matsushita
Akihiro Asai
Kyoya Ochiai
Shingo Matsushita
Akihiro Asai
Kyoya Ochiai
Application Number:
JP2019052502A
Publication Date:
April 18, 2023
Filing Date:
March 20, 2019
Export Citation:
Assignee:
株式会社リコー
International Classes:
H04B11/00; G08B21/24; G08B27/00
Domestic Patent References:
| JP2017009862A | ||||
| JP2018207239A | ||||
| JP2018125646A | ||||
| JP2002314634A | ||||
| JP2018124954A |
Attorney, Agent or Firm:
Hiroaki Sakai