Title:
音響通信システム、音響送信装置、音響受信装置、プログラムおよび音響信号送信方法
Document Type and Number:
Japanese Patent JP7385531
Kind Code:
B2
Abstract:
To provide an acoustic communication system, an acoustic transmission device, an acoustic reception device, a program, and an acoustic signal transmission method that can transmit data having an information amount more than a unit information amount per piece of embedded information embedded in an acoustic signal, by a sound electronic watermark technique.SOLUTION: An acoustic communication system 10 includes an acoustic transmission device 20 and an acoustic reception device 30. The acoustic transmission device 20 includes: a data division unit 24 that divides original data DS into multiple pieces of small data; and an embedding unit 28 that causes a speaker 12 to emit an acoustic signal AS in which embedded information is embedded in an original sound signal OS by embedding the multiple pieces of small data one by one in order as the embedded information in the original sound signal OS. The acoustic reception device 30 includes: a data acquisition unit that extracts multiple pieces of embedded information SC from the acoustic signal AS collected by a microphone 31 and acquires the multiple pieces of small data from the multiple pieces of embedded information SC; and a data reconstruction unit 35 that reconstructs the original data DS by combining the multiple pieces of small data.SELECTED DRAWING: Figure 3
Inventors:
Higashi Kei
Application Number:
JP2020104835A
Publication Date:
November 22, 2023
Filing Date:
June 17, 2020
Export Citation:
Assignee:
toa corporation
International Classes:
G10L19/018; H04B11/00
Domestic Patent References:
| JP2016075890A | ||||
| JP2004341066A | ||||
| JP9200055A | ||||
| JP2008505368A | ||||
| JP2007515672A |
Foreign References:
| WO2006025337A1 |
Attorney, Agent or Firm:
Tetsuya Hamana