Title:
AUDIO OUTPUT INSPECTION SYSTEM, AUDIO OUTPUT DEVICE, AND AUDIO INPUT DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/081861
Kind Code:
A1
Abstract:
In this audio output device, a first band elimination filter is connected in series between a first speaker, and an amplification unit for amplifying an audio signal. A second band elimination filter is connected in series between a second speaker, and a connection point between the first band elimination filter and the amplification unit. The stopband of the second band elimination filter is different to that of the first band elimination filter. In this audio input device, a first bandpass filter, a second bandpass filter, and a reference bandpass filter are connected to the output of a microphone, and are connected to each other in parallel. A detection unit is connected to the first bandpass filter, the second bandpass filter, and the reference bandpass filter. The passbands of the first and second bandpass filters respectively overlap the stopbands of the first and second band elimination filters. A reference passband of the reference bandpass filter is different to the passbands of the first and second bandpass filters.
Inventors:
KOJIMA HIROSHI
GOSEKI TSUTOMU
YOSIZAWA SHIGEO
AIZAWA SHINYA
TSUKAHARA DAIHO
GOSEKI TSUTOMU
YOSIZAWA SHIGEO
AIZAWA SHINYA
TSUKAHARA DAIHO
Application Number:
PCT/JP2016/004828
Publication Date:
May 18, 2017
Filing Date:
November 08, 2016
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H04R29/00; H04R3/00; H04R27/00
Domestic Patent References:
| WO2013190632A1 | 2013-12-27 |
Foreign References:
| JPH0833093A | 1996-02-02 | |||
| JP2004297368A | 2004-10-21 | |||
| JP2006314008A | 2006-11-16 |
Attorney, Agent or Firm:
KAMATA, Kenji et al. (JP)
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