Title:
MICROPHONE AND SMART AUDIO APPARATUS
Document Type and Number:
Japanese Patent JP2020167670
Kind Code:
A
Abstract:
To inhibit a microphone of a smart audio apparatus from being affected by loudspeaker voice, without adding echo canceling algorithm and without disturbing downsizing of the apparatus.SOLUTION: A microphone 100 includes: a case 101; a diaphragm 102 that is fixed in the case 101, includes a first sound collection surface 1021 and a second sound collection surface 1022 facing each other, and outputs an electric signal on the basis of sound pressure acting on the first sound collection surface 1021 and the second sound collection surface 1022; a main sound collection hole 103 that is formed on the case 101 and makes a sound wave from outside the case 101 be passed through the hole and transferred into a main sound collection channel 1031 to transfer the sound wave to the first sound collection surface 1021 with first sound pressure; and a sub sound collection hole 104 that is formed on the case 101 and makes a sound wave be passed through the hole into a sub sound collection channel 1041 to transfer the sound wave to the second sound collection surface 1022 with second sound pressure differing from the first sound pressure.SELECTED DRAWING: Figure 1
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Inventors:
WANG XIN
Application Number:
JP2020036743A
Publication Date:
October 08, 2020
Filing Date:
March 04, 2020
Export Citation:
Assignee:
BAIDU ONLINE NETWORK TECHNOLOGY BEIJING CO LTD
International Classes:
H04R1/38; G10K11/16; H04R1/02; H04R1/08
Domestic Patent References:
| JP2010136131A | 2010-06-17 | |||
| JP2013110581A | 2013-06-06 |
Attorney, Agent or Firm:
Kunio Ueda
Junichiro Yanagi
Mayumi Oguri
Kunihiko Takeuchi
Junichiro Yanagi
Mayumi Oguri
Kunihiko Takeuchi