Patents-Review.com
ClassID:

231944 ⎘

H04R1/38 - CPC Classification

Classification description:

Details of transducers, loudspeakers or microphones; Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means in which sound waves act upon both sides of a diaphragm and incorporating acoustic phase-shifting means, e.g. pressure-gradient microphone

Recent Application in this class:
#1
20250193570
2025-06-12

EARPHONE WITHOUT COVERING AN EAR CANAL

 #2
20250133336
2025-04-24

WRIST-WORN DEVICE AND AIR PRESSURE ADJUSTMENT METHOD, APPARATUS AND SYSTEM THEREOF

 #3
20250039591
2025-01-30

ACOUSTIC OUTPUT APPARATUS

 #4
20250030969
2025-01-23

ACOUSTIC OUTPUT APPARATUS AND METHODS THEREOF

 #5
20250016487
2025-01-09

ACOUSTIC OUTPUT APPARATUS

 #6
20240422466
2024-12-19

OPEN EARPHONE

 #7
20240406611
2024-12-05

ACOUSTIC OUTPUT APPARATUS

 #8
20240388831
2024-11-21

ACOUSTIC OUTPUT DEVICE

 #9
20240323579
2024-09-26

ACOUSTIC OUTPUT DEVICE AND COMPONENTS THEREOF

 #10
20240205582
2024-06-20

Acoustic device

 #11
20240171892
2024-05-23

ACOUSTIC OUTPUT DEVICE AND NOISE REDUCTION AND SOUND TRANSMISSION DEVICE

 #12
20240147145
2024-05-02

Microphone assembly with multiple directivities

 #13
20240089677
2024-03-14

METHOD AND APPARATUS FOR OWN-VOICE SENSING IN A HEARING ASSISTANCE DEVICE

 #14
20240073579
2024-02-29

Acoustic output apparatus

 #15
20230396912
2023-12-07

ACOUSTIC OUTPUT APPARATUS AND METHOD THEREOF

 #16
20230336902
2023-10-19

Earphone without covering an ear canal

 #17
20230300522
2023-09-21

Information Processing Method and Information Processing Apparatus

 #18
20230276161
2023-08-31

Acoustic output apparatus

 #19
20230276160
2023-08-31

Acoustic output apparatus

 #20
20230232145
2023-07-20

Acoustic output apparatus and methods thereof

 #21
20230171528
2023-06-01

Open earphone

 #22
20230156391
2023-05-18

Acoustic output device

 #23
20230156390
2023-05-18

Acoustic output device

 #24
20230145038
2023-05-11

Acoustic output device

 #25
20230142560
2023-05-11

Speaker

 #26
20230141946
2023-05-11

Acoustic output device

 #27
20230109699
2023-04-13

Acoustic device

 #28
20230097786
2023-03-30

MEMS FLOW MICROPHONE WITH EQUAL ACOUSTIC PATH LENGTHS

 #29
20230070507
2023-03-09

ACOUSTIC OUTPUT APPARATUS AND METHOD THEREOF

 #30
20230066263
2023-03-02

Acoustic output device

 #31
20230012124
2023-01-12

Acoustic output device and components thereof

 #32
20230007380
2023-01-05

Acoustic output apparatus

 #33
20220408172
2022-12-22

Acoustic output apparatus

 #34
20220394364
2022-12-08

MOVING COIL MICROPHONE TRANSDUCER WITH SECONDARY PORT

 #35
20220386012
2022-12-01

Acoustic output apparatus

 #36
20220264212
2022-08-18

Open earphone

 #37
20220182753
2022-06-09

Vibration sensor

 #38
20220070570
2022-03-03

Acoustic output device and noise reduction and sound transmission device

 #39
20220030347
2022-01-27

Acoustic output apparatus

 #40
20220021963
2022-01-20

Acoustic output apparatus and methods thereof

 #41
20210409868
2021-12-30

SPEAKER DEVICE

 #42
20210400392
2021-12-23

Acoustic module and electronic product

 #43
20210377645
2021-12-02

Acoustic output apparatus and method thereof

 #44
20210377643
2021-12-02

Sound device and sound system

 #45
20210377639
2021-12-02

Acoustic device

 #46
20210289281
2021-09-16

Acoustic output apparatus

 #47
20210274281
2021-09-02

Acoustic output apparatus

 #48
20210274280
2021-09-02

Acoustic output device and buttons thereof

 #49
20210274278
2021-09-02

Acoustic output apparatus

 #50
20210274276
2021-09-02

Earphone without covering an ear canal

 #51
20210271115
2021-09-02

Microphone noise reduction system and smart glasses using the system

 #52
20210243518
2021-08-05

Acoustic output device and components thereof

 #53
20210235181
2021-07-29

Acoustic output apparatus

 #54
20210227306
2021-07-22

Audio glasses

 #55
20210223577
2021-07-22

Acoustic output device

 #56
20210185421
2021-06-17

Acoustic output apparatus with a plurality of acoustic drivers and methods thereof

 #57
20210168500
2021-06-03

Acoustic output apparatus

 #58
20210168498
2021-06-03

Acoustic output apparatus with drivers in multiple frequency ranges and bluetooth low energy receiver

 #59
20210168485
2021-06-03

Open earphone

 #60
20210160610
2021-05-27

Acoustic output apparatus and methods thereof

 #61
20210160606
2021-05-27

Open earphone

 #62
20210160602
2021-05-27

Acoustic device

 #63
20210152927
2021-05-20

Non-transitory computer-readable storage medium for storing sound signal conversion program, method of converting sound signal, and sound signal conversion device

 #64
20210127200
2021-04-29

Acoustic output device

 #65
20210127197
2021-04-29

Acoustic output apparatus

 #66
20210120347
2021-04-22

Method and apparatus for own-voice sensing in a hearing assistance device

 #67
20210112329
2021-04-15

Open earphone

 #68
20210067858
2021-03-04

Open audio device

 #69
20210037308
2021-02-04

Systems and methods to shape a medium

 #70
20200404429
2020-12-24

Directional MEMS microphone with correction circuitry

 #71
20200260165
2020-08-13

Moving coil microphone transducer with secondary port

 #72
20200145745
2020-05-07

Acoustic device

 #73
20200112783
2020-04-09

Acoustic device

 #74
20200053456
2020-02-13

Acoustic transducer with split dipole vents

 #75
20190379962
2019-12-12

VENTING HEADPHONES

 #76
20190379955
2019-12-12

Gradient micro-electro-mechanical (MEMS) microphone assembly

 #77
20190335271
2019-10-31

Vibration sensor

 #78
20190230446
2019-07-25

Directional MEMS microphone with correction circuitry

 #79
20190110116
2019-04-11

Gradient micro-electro-mechanical systems (MEMS) microphone

 #80
20190028786
2019-01-24

Moving coil microphone transducer with secondary port

 #81
20190020940
2019-01-17

Acoustic transducer

 #82
20180324522
2018-11-08

Sound pressure gradient microphone

 #83
20180279056
2018-09-27

Electronic device including directional MEMS microphone assembly

 #84
20180249235
2018-08-30

Gradient micro-electro-mechanical systems (MEMS) microphone with varying height assemblies

 #85
20180213320
2018-07-26

Methods and systems for optimizing acoustic transducer performance

 #86
20180167710
2018-06-14

Acoustic transducer

 #87
20180160238
2018-06-07

Method and apparatus for own-voice sensing in a hearing assistance device

 #88
20180146294
2018-05-24

Vibration sound-producing apparatus

 #89
20180124510
2018-05-03

Directional microphone device and signal processing techniques

 #90
20180115810
2018-04-26

MEMS sensor

 #91
20170374473
2017-12-28

MEMS TRANSDUCER PACKAGE

 #92
20170363493
2017-12-21

Dynamic pressure sensor with improved operation

 #93
20170078787
2017-03-16

Unidirectional condenser microphone unit, unidirectional condenser microphone, and method of manufacturing unidirectional condenser microphone unit

 #94
20170034616
2017-02-02

Microphone and microphone apparatus

 #95
20160323675
2016-11-03

Loudspeaker module and electronic device comprising the loudspeaker module

 #96
20160150319
2016-05-26

Method of manufacturing microphone, microphone, and control method therefor

 #97
20160142814
2016-05-19

Dual cartridge directional microphone

 #98
20160134978
2016-05-12

Transducer, a hearing aid comprising the transducer and a method of operating the transducer

 #99
20160007124
2016-01-07

Electrostatic membrane pump/transducer and methods to make and use same

 #100
20160007107
2016-01-07

Gradient micro-electro-mechanical systems (MEMS) microphone with varying height assemblies

 #101
20150362394
2015-12-17

Pressure-sensitive sensor

 #102
20150358741
2015-12-10

Condenser microphone unit

 #103
20150334492
2015-11-19

Method and apparatus for own-voice sensing in a hearing assistance device

 #104
20150098595
2015-04-09

Audio speaking having an electrostatic membrane pump and methods to use same

 #105
20150010191
2015-01-08

Gradient micro-electro-mechanical systems (MEMS) microphone

 #106
20150003640
2015-01-01

Dynamic microphone unit and dynamic microphone

 #107
20140112509
2014-04-24

Transducer, a hearing aid comprising the transducer and a method of operating the transducer

 #108
20140044294
2014-02-13

Method and apparatus for own-voice sensing in a hearing assistance device

 #109
20130230199
2013-09-05

Hearing device with a microphone

 #110
20130230195
2013-09-05

Condenser microphone

 #111
20130129107
2013-05-23

Voice acquisition system for vehicle

 #112
20130028451
2013-01-31

Dual cartridge directional microphone

 #113
20120287303
2012-11-15

SOUND SEPARATING DEVICE AND CAMERA UNIT INCLUDING THE SAME

 #114
20120257777
2012-10-11

Microphone unit and voice input device comprising same

 #115
20120250927
2012-10-04

Paired gradient and pressure microphones for rejecting wind and ambient noise

 #116
20120243721
2012-09-27

Differential microphone unit and mobile apparatus

 #117
20120201410
2012-08-09

Microphone unit , voice input device, and method of manufacturing microphone unit

 #118
20120167691
2012-07-05

METHOD FOR RECORDING AND REPRODUCING PRESSURE WAVES COMPRISING DIRECT QUANTIFICATION

 #119
20120076321
2012-03-29

Single Microphone for Noise Rejection and Noise Measurement

 #120
20120076312
2012-03-29

Noise level estimator

 #121
20120020510
2012-01-26

MICROPHONE UNIT

 #122
20110286610
2011-11-24

Method of forming a miniature, surface microsurfaced differential microphone

 #123
20110235841
2011-09-29

Microphone unit

 #124
20110233692
2011-09-29

Microphone unit and voice input device using same

 #125
20110195745
2011-08-11

Microphone unit and mobile phone provided with the same

 #126
20110176698
2011-07-21

Differential microphone

 #127
20110170726
2011-07-14

Microphone unit, close-talking type speech input device, information processing system, and method for manufacturing microphone unit

 #128
20110158450
2011-06-30

Microphone unit

 #129
20110158449
2011-06-30

Microphone Unit

 #130
20110142265
2011-06-16

Capacitor microphone unit and capacitor microphone

 #131
20110110550
2011-05-12

Microphone with variable low frequency cutoff

 #132
20110103594
2011-05-05

Stereo microphone unit and stereo microphone

 #133
20110033062
2011-02-10

Acoustic velocity microphone using a buoyant object

 #134
20110026753
2011-02-03

Microphone apparatus with increased directivity

 #135
20100226522
2010-09-09

Microphone unit

 #136
20100189300
2010-07-29

Microphone unit

 #137
20100177926
2010-07-15

Capacitive electroacoustic transducer and microphone

 #138
20100172531
2010-07-08

Method and apparatus for hearing assistance device microphones

 #139
20100142743
2010-06-10

Voice input apparatus

 #140
20100142742
2010-06-10

Microphone unit

 #141
20100124348
2010-05-20

Microphone system for vehicle

 #142
20100061572
2010-03-11

Capacitive sound transducer having a perforated attenuation disk

 #143
20090268925
2009-10-29

MICROPHONE ARRANGEMENT

 #144
20090214068
2009-08-27

TRANSDUCER ASSEMBLY

 #145
20090214053
2009-08-27

POSITION DETERMINATION OF SOUND SOURCES

 #146
20090190777
2009-07-30

Microphone arrangement having more than one pressure gradient transducer

 #147
20090190775
2009-07-30

MICROPHONE ARRANGEMENT COMPRISING PRESSURE GRADIENT TRANSDUCERS

 #148
20090136059
2009-05-28

Microphone system, sound input apparatus and method for manufacturing the same

 #149
20090129621
2009-05-21

Portable electronic apparatus with microphones

 #150
20090094817
2009-04-16

Directional microphone assembly

 #151
20090046883
2009-02-19

Surface micromachined differential microphone

 #152
20090016557
2009-01-15

Surface micromachined differential microphone

 #153
20080318640
2008-12-25

Voice input-output device and communication device

 #154
20080247586
2008-10-09

Microphone unit, close-talking voice input device, information processing system, and method of manufacturing microphone unit

 #155
20080159575
2008-07-03

ELECTRONIC DEVICE WITH INTERNAL UNI-DIRECTIONAL MICROPHONE

 #156
20070177752
2007-08-02

Microphone apparatus with increased directivity

 #157
20070133827
2007-06-14

Vehicle accessory microphone

 #158
20070047753
2007-03-01

Vehicle accessory microphone

 #159
20070025571
2007-02-01

Electret Condenser Microphone

 #160
20070019835
2007-01-25

Wind noise suppression in directional microphones

 #161
20060109996
2006-05-25

Microphone system for vehicle

 #162
20060083390
2006-04-20

Microphone system having pressure-gradient capsules

 #163
20050190944
2005-09-01

Unidirectional condenser microphone unit

 #164
20050135641
2005-06-23

Variable directional capacitor microphone comprising elastic acoustic resisting member

 #165
20050084128
2005-04-21

Directional microphone

 #166
20050069156
2005-03-31

Noise canceling microphone with acoustically tuned ports

 #167
20050063557
2005-03-24

Directional capacitor microphone

 #168
20050031150
2005-02-10

Electret condenser microphone

 #169
15417189
2018-03-13

Microphone