Title:
AUDIO PROCESSING SYSTEM, AUDIO PROCESSING DEVICE, AND AUDIO PROCESSING METHOD
Document Type and Number:
WIPO Patent Application WO/2017/203900
Kind Code:
A1
Abstract:
An audio processing system equipped with a speaker, multiple microphones, and an audio processing device. The audio processing device is equipped with: multiple filters that allow audio signals of sound picked up by the multiple microphones to pass in respective given first bands included in the audio band that is output from the speaker; multiple delay devices that delay, with respective delay times corresponding to the first bands, the audio signals that have passed through the multiple filters; a correlation value calculation unit that calculates a correlation value for the audio signal of the sound output from the speaker and the multiple audio signals that have been delayed respectively by the multiple delay devices; and a determination unit that, on the basis of the correlation value, determines whether there is an abnormality in the multiple microphones and the speaker.
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Inventors:
TAKAYAMA SHINICHI
Application Number:
PCT/JP2017/015639
Publication Date:
November 30, 2017
Filing Date:
April 19, 2017
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H04R29/00; H04R3/00
Foreign References:
| JP2010068045A | 2010-03-25 | |||
| JP2012227857A | 2012-11-15 | |||
| JP2015008373A | 2015-01-15 | |||
| JP2007306410A | 2007-11-22 | |||
| JP2013524601A | 2013-06-17 | |||
| JP2014093587A | 2014-05-19 | |||
| JP2014068066A | 2014-04-17 |
Other References:
NISHIMURA MASAHARU; KAJIKAWA YOSHINOBU: "The Institute of Electronics, Information and Communication Engineers", 2012, article "2 groups (image/sound/language) 6th Edition (acoustic signal processing) Chapter 6 (active noise control"
See also references of EP 3468232A4
See also references of EP 3468232A4
Attorney, Agent or Firm:
KAMATA Kenji et al. (JP)
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