Title:
SPEAKER OPERATION CONFIRMATION DEVICE AND METHOD
Document Type and Number:
WIPO Patent Application WO/2017/164380
Kind Code:
A1
Abstract:
Provided is a speaker operation confirmation device (10) comprising the following: a storage unit (11) which stores in advance, as a reference impedance characteristic, an impedance frequency characteristic of a speaker (40) during normal times; a detection unit (12) which detects, on the basis of an (arbitrary) real time audio signal supplied to the speaker (40) during use of the speaker, a current impedance frequency characteristic of the speaker, as the current impedance characteristic; and a determination unit (13) which determines the presence/absence of an abnormality in the speaker (40), on the basis of a comparison between the detected current impedance characteristic and the stored reference impedance characteristic. As a result, speaker operation can be confirmed on the basis of a real-time audio signal, without using a dedicated inspection signal, so the presence/absence of an abnormality in the speaker (40) can be detected on the basis of a real-time audio signal flowing to the speaker (40) during an actual concert performance, for example.
More Like This:
Inventors:
GOTO MITSUTAKA (JP)
Application Number:
PCT/JP2017/012052
Publication Date:
September 28, 2017
Filing Date:
March 24, 2017
Export Citation:
Assignee:
YAMAHA CORP (JP)
International Classes:
H04R29/00; H04R3/00
Foreign References:
| JP2014093587A | 2014-05-19 | |||
| JPH09307988A | 1997-11-28 | |||
| JP2013063706A | 2013-04-11 | |||
| JP2011199866A | 2011-10-06 | |||
| JPH01135898U | 1989-09-18 |
Attorney, Agent or Firm:
IIZUKA, Yoshihito (JP)
Download PDF: