Patents-Review.com
ClassID:

231913 ⎘

H04R1/2807 - CPC Classification

Classification description:

Details of transducers, loudspeakers or microphones; Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only; Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means Enclosures comprising vibrating or resonating arrangements

Sub-classes:
Recent Application in this class:
#1
20260046549
2026-02-12

ACOUSTIC DEVICE

 #2
20260006387
2026-01-01

TRANSDUCER

 #3
20250324193
2025-10-16

SOUND COLLECTING DEVICE

 #4
20250324192
2025-10-16

ACOUSTIC TRANSDUCER DEVICE WITH EXPANDED BACK VOLUME

 #5
20250294295
2025-09-18

MICROPHONES

 #6
20250220359
2025-07-03

MEMS MICROPHONE AND ELECTRONIC DEVICE

 #7
20250220095
2025-07-03

HANDHELD ELECTRONIC DEVICE

 #8
20250193570
2025-06-12

EARPHONE WITHOUT COVERING AN EAR CANAL

 #9
20250184657
2025-06-05

ELECTRONIC DEVICE COMPRISING AUDIO INPUT DEVICE

 #10
20250128666
2025-04-24

CHAIR COMPRISING A LOW FREQUENCY SPEAKER

 #11
20250119681
2025-04-10

SPEAKER DEVICE

 #12
20250039591
2025-01-30

ACOUSTIC OUTPUT APPARATUS

 #13
20250030969
2025-01-23

ACOUSTIC OUTPUT APPARATUS AND METHODS THEREOF

 #14
20250016495
2025-01-09

Impedance-Tuned Microphone Tunnel

 #15
20250016487
2025-01-09

ACOUSTIC OUTPUT APPARATUS

 #16
20240422466
2024-12-19

OPEN EARPHONE

 #17
20240406611
2024-12-05

ACOUSTIC OUTPUT APPARATUS

 #18
20240388831
2024-11-21

ACOUSTIC OUTPUT DEVICE

 #19
20240388829
2024-11-21

MICROPHONE FUNCTIONALITY IN A MULTIPORT ARRAY

 #20
20240323579
2024-09-26

ACOUSTIC OUTPUT DEVICE AND COMPONENTS THEREOF

 #21
20240205582
2024-06-20

Acoustic device

 #22
20240179452
2024-05-30

ULTRASONIC TRANSDUCER, DISTANCE MEASUREMENT APPARATUS, AND METHOD OF MANUFACTURING ULTRASONIC TRANSDUCER

 #23
20240171892
2024-05-23

ACOUSTIC OUTPUT DEVICE AND NOISE REDUCTION AND SOUND TRANSMISSION DEVICE

 #24
20240169866
2024-05-23

SOUND GENERATING DEVICE AND DISPLAY APPARATUS INCLUDING THE SAME

 #25
20240107223
2024-03-28

SPEAKER DEVICE

 #26
20240089652
2024-03-14

APPARATUS

 #27
20240080611
2024-03-07

Apparatus

 #28
20240073579
2024-02-29

Acoustic output apparatus

 #29
20240048896
2024-02-08

DISPLAY APPARATUS

 #30
20230403502
2023-12-14

DIRECTIONAL MICROPHONE RECEIVER AND SOUND DEVICE

 #31
20230396912
2023-12-07

ACOUSTIC OUTPUT APPARATUS AND METHOD THEREOF

 #32
20230358600
2023-11-09

VIBRATION SENSORS

 #33
20230345171
2023-10-26

Loudspeaker, mobile device and method of manufacturing a loudspeaker

 #34
20230345170
2023-10-26

MICROPHONES

 #35
20230336902
2023-10-19

Earphone without covering an ear canal

 #36
20230319453
2023-10-05

IN-CANAL HEARING DEVICE INCLUDING SEALED VIBRATORY TRANSDUCER

 #37
20230300519
2023-09-21

VIBRATION SENSORS

 #38
20230276161
2023-08-31

Acoustic output apparatus

 #39
20230276160
2023-08-31

Acoustic output apparatus

 #40
20230269525
2023-08-24

METHODS OF MAKING SIDE-PORT MICROELECTROMECHANICAL SYSTEM MICROPHONES

 #41
20230261617
2023-08-17

Pre-amplification conditioning circuit for a transducer audio device

 #42
20230246604
2023-08-03

Pre-amplification conditioning circuit for a transducer audio device

 #43
20230232145
2023-07-20

Acoustic output apparatus and methods thereof

 #44
20230232143
2023-07-20

Microphone functionality in a multiport array

 #45
20230224630
2023-07-13

VIBRATION SENSOR

 #46
20230217147
2023-07-06

VIBRATION SENSORS

 #47
20230199370
2023-06-22

VIBRATION SENSOR

 #48
20230199360
2023-06-22

VIBRATION SENSORS

 #49
20230171528
2023-06-01

Open earphone

 #50
20230156391
2023-05-18

Acoustic output device

 #51
20230156390
2023-05-18

Acoustic output device

 #52
20230145038
2023-05-11

Acoustic output device

 #53
20230142874
2023-05-11

Mobile terminal having housing and speaker

 #54
20230141946
2023-05-11

Acoustic output device

 #55
20230109699
2023-04-13

Acoustic device

 #56
20230070507
2023-03-09

ACOUSTIC OUTPUT APPARATUS AND METHOD THEREOF

 #57
20230066263
2023-03-02

Acoustic output device

 #58
20230058586
2023-02-23

Sound amplification device

 #59
20230053374
2023-02-23

Microphone functionality in a multiport array

 #60
20230047687
2023-02-16

Microphone with low noise and high Q value

 #61
20230022584
2023-01-26

Hearing aids and related devices and methods

 #62
20230012124
2023-01-12

Acoustic output device and components thereof

 #63
20230007385
2023-01-05

HEADPHONE

 #64
20230007380
2023-01-05

Acoustic output apparatus

 #65
20220408172
2022-12-22

Acoustic output apparatus

 #66
20220399004
2022-12-15

Voice augmentation device, partition, mask, mouth shield, and face shield

 #67
20220394364
2022-12-08

MOVING COIL MICROPHONE TRANSDUCER WITH SECONDARY PORT

 #68
20220386012
2022-12-01

Acoustic output apparatus

 #69
20220353606
2022-11-03

Sound pickup device

 #70
20220337937
2022-10-20

Embodied sound device and method

 #71
20220312091
2022-09-29

Conversion element member, and conversion element module and electronic device including conversion element member

 #72
20220286540
2022-09-08

Acoustic module for handheld electronic device

 #73
20220286539
2022-09-08

Handheld electronic device

 #74
20220279270
2022-09-01

MEMS device with a TMD structure

 #75
20220264212
2022-08-18

Open earphone

 #76
20220182753
2022-06-09

Vibration sensor

 #77
20220070570
2022-03-03

Acoustic output device and noise reduction and sound transmission device

 #78
20220030347
2022-01-27

Acoustic output apparatus

 #79
20220021963
2022-01-20

Acoustic output apparatus and methods thereof

 #80
20210377645
2021-12-02

Acoustic output apparatus and method thereof

 #81
20210375171
2021-12-02

Display apparatus

 #82
20210329370
2021-10-21

METHOD FOR PROVIDING SERVICE USING EARSET

 #83
20210306738
2021-09-30

Wearable audio device with counter-bore port feature

 #84
20210289281
2021-09-16

Acoustic output apparatus

 #85
20210274281
2021-09-02

Acoustic output apparatus

 #86
20210274280
2021-09-02

Acoustic output device and buttons thereof

 #87
20210274278
2021-09-02

Acoustic output apparatus

 #88
20210274276
2021-09-02

Earphone without covering an ear canal

 #89
20210271115
2021-09-02

Microphone noise reduction system and smart glasses using the system

 #90
20210243518
2021-08-05

Acoustic output device and components thereof

 #91
20210235181
2021-07-29

Acoustic output apparatus

 #92
20210227306
2021-07-22

Audio glasses

 #93
20210223577
2021-07-22

Acoustic output device

 #94
20210185432
2021-06-17

Adaptable waveguides

 #95
20210168500
2021-06-03

Acoustic output apparatus

 #96
20210168498
2021-06-03

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

 #97
20210168485
2021-06-03

Open earphone

 #98
20210160610
2021-05-27

Acoustic output apparatus and methods thereof

 #99
20210160606
2021-05-27

Open earphone

 #100
20210160602
2021-05-27

Acoustic device

 #101
20210127200
2021-04-29

Acoustic output device

 #102
20210127197
2021-04-29

Acoustic output apparatus

 #103
20210127192
2021-04-29

Thin-type phone receiver

 #104
20210127191
2021-04-29

Interchangeable port acoustical cap for microphones

 #105
20210127189
2021-04-29

Display apparatus

 #106
20210112329
2021-04-15

Open earphone

 #107
20210058693
2021-02-25

Headphone arrangements for generating natural directional pinna cues

 #108
20200396548
2020-12-17

Microphone and methods of assembling microphones

 #109
20200389721
2020-12-10

MEMS microphone with acoustic relief channels

 #110
20200359136
2020-11-12

Acoustic transducer driver and controller

 #111
20200280797
2020-09-03

Hanging speaker system

 #112
20200280777
2020-09-03

Speaker device and enclosure

 #113
20200260165
2020-08-13

Moving coil microphone transducer with secondary port

 #114
20200228891
2020-07-16

Hanging speaker system

 #115
20200213712
2020-07-02

Sounding device, manufacturing method thereof and display device

 #116
20200143719
2020-05-07

Display apparatus

 #117
20200107092
2020-04-02

Microphone and terminal device

 #118
20200092659
2020-03-19

Method for manufacturing a thin filtering membrane and an acoustic transducer device including the filtering membrane

 #119
20200077179
2020-03-05

Directional microphone

 #120
20200014999
2020-01-09

Display apparatus

 #121
20200007978
2020-01-02

System, method and apparatus for translating, converting and/or transforming audio energy into haptic and/or visual representation

 #122
20190394560
2019-12-26

Speaker

 #123
20190387825
2019-12-26

Head mounted device

 #124
20190379958
2019-12-12

Speaker box

 #125
20190356988
2019-11-21

Microphone and methods of assembling microphones

 #126
20190335271
2019-10-31

Vibration sensor

 #127
20190323881
2019-10-24

Vibration sensor with low-frequency roll-off response curve

 #128
20190306628
2019-10-03

AIR COOLING APPARATUS

 #129
20190215635
2019-07-11

Orientation-responsive acoustic array control

 #130
20190200116
2019-06-27

Loudspeaker, mobile device and method of manufacturing a loudspeaker

 #131
20190191252
2019-06-20

Acoustic transducer driver and controller

 #132
20190191233
2019-06-20

Operating device and acoustic device

 #133
20190090067
2019-03-21

Method for manufacturing a thin filtering membrane and an acoustic transducer device including the filtering membrane

 #134
20190090048
2019-03-21

Microphone and manufacturing method thereof

 #135
20190084827
2019-03-21

MEMS microphone

 #136
20190069075
2019-02-28

Integrally-designed bone conduction driver

 #137
20190069073
2019-02-28

Frame, speaker unit using the same, and headphone/earphone

 #138
20190045296
2019-02-07

System, method and apparatus for translating, converting and/or transforming audio energy into haptic and/or visual representation

 #139
20190028799
2019-01-24

Signal processing method of audio sensing device, and audio sensing system

 #140
20190028786
2019-01-24

Moving coil microphone transducer with secondary port

 #141
20180359565
2018-12-13

Capturing wide-band audio using microphone arrays and passive directional acoustic elements

 #142
20180343515
2018-11-29

Receiver with venting opening

 #143
20180343334
2018-11-29

Communication device

 #144
20180317000
2018-11-01

Display apparatus

 #145
20180292079
2018-10-11

LIGHTED MIRROR WITH SOUND SYSTEM

 #146
20180279028
2018-09-27

Acoustic assembly for an electronic device

 #147
20180255394
2018-09-06

Active noise control with planar transducers

 #148
20180242065
2018-08-23

Microphone

 #149
20180213320
2018-07-26

Methods and systems for optimizing acoustic transducer performance

 #150
20180206033
2018-07-19

Capturing wide-band audio using microphone arrays and passive directional acoustic elements

 #151
20180160218
2018-06-07

MEMS mircophone with increased back volume

 #152
20180144733
2018-05-24

Modular Acoustic Sound Processor

 #153
20180124509
2018-05-03

Non-axisymmetric and non-horn phase plugs

 #154
20180115820
2018-04-26

Speaker box

 #155
20180109863
2018-04-19

Earphone device

 #156
20180063635
2018-03-01

NON-AXISYMMETRIC AND NON-HORN PHASE PLUGS

 #157
20180058915
2018-03-01

Vibration sensor with low-frequency roll-off response curve

 #158
20180054669
2018-02-22

Package structure of MEMS microphone

 #159
20180048966
2018-02-15

Microphone and methods of assembling microphones

 #160
20170359648
2017-12-14

MEMS microphone and method of manufacturing the same

 #161
20170359640
2017-12-14

Audio speakers with integrated sealing and assembly features for “caseless” installation

 #162
20170353784
2017-12-07

Damping spring

 #163
20170347204
2017-11-30

Miniature sounder

 #164
20170347185
2017-11-30

MICROPHONE AND MANUFACTURING METHOD THEREOF

 #165
20170314845
2017-11-02

Multifunctional portable sound equipment

 #166
20170289658
2017-10-05

Loudspeaker module

 #167
20170264983
2017-09-14

Audio speakers with integrated sealing and assembly features for “caseless” installation

 #168
20170223447
2017-08-03

Multi-driver acoustic horn for horizontal beam control

 #169
20170223446
2017-08-03

Sound recording module

 #170
20170188198
2017-06-29

Electronic converter, reverse electronic converter, program and information communication system

 #171
20170180852
2017-06-22

Orientation-responsive acoustic array control

 #172
20170111731
2017-04-20

MICROPHONE ASSEMBLY WITH SUPPRESSED FREQUENCY RESPONSE

 #173
20170078777
2017-03-16

Acoustic assembly for an electronic device

 #174
20170070808
2017-03-09

Earphone having an acoustic tuning mechanism

 #175
20170048603
2017-02-16

Earphone device

 #176
20170018266
2017-01-19

Modular acoustic sound processor

 #177
20160330542
2016-11-10

Customization earphone structure and detachable audio broadcasting module thereof

 #178
20160255430
2016-09-01

Acoustic device and headrest

 #179
20160241938
2016-08-18

Speaker

 #180
20160232759
2016-08-11

Life safety device with compact circumferential acoustic resonator

 #181
20160219134
2016-07-28

MOBILE DEVICE CASE WITH SOUND RADIATOR

 #182
20160127821
2016-05-05

Acoustic system having a housing with adsorbent powder

 #183
20160119735
2016-04-28

Orientation-responsive acoustic array control

 #184
20160119718
2016-04-28

Double-vibrating-diaphragm loudspeaker module

 #185
20160105741
2016-04-14

Earphone device

 #186
20160100247
2016-04-07

Speaker

 #187
20160100241
2016-04-07

Earphone device

 #188
20160100240
2016-04-07

Earphone device

 #189
20160080859
2016-03-17

Earphone having an acoustic tuning mechanism

 #190
20160080858
2016-03-17

HELMHOLTZ RESONATOR LOUDSPEAKER

 #191
20160014493
2016-01-14

In-ear-canal headset assembly

 #192
20150381783
2015-12-31

Portable electronic device

 #193
20150360122
2015-12-17

ACOUSTIC ENERGY INDUCTIVE DEVICE, EQUIPMENT AND METHOD USING THE SAME

 #194
20150310709
2015-10-29

Life safety device with compact circumferential acoustic resonator

 #195
20150271603
2015-09-24

Speaker system having a sound collection unit for combining sound waves

 #196
20150256923
2015-09-10

LOUDSPEAKER AND ELECTRONIC DEVICES INCORPORATING SAME

 #197
20150249879
2015-09-03

Earphone device

 #198
20150245132
2015-08-27

Speaker module

 #199
20150208162
2015-07-23

Orientation-responsive acoustic array control

 #200
20150172800
2015-06-18

Earbud with membrane based acoustic mass loading

 #201
20150117696
2015-04-30

Buffer member, buffer frame and electrical device

 #202
20150110336
2015-04-23

Speaker box

 #203
20150071474
2015-03-12

Transmission line loudspeaker

 #204
20150010190
2015-01-08

Sound generating apparatus and electronic apparatus including the same

 #205
20150003640
2015-01-01

Dynamic microphone unit and dynamic microphone

 #206
20150003619
2015-01-01

Water leak warning device

 #207
20140369548
2014-12-18

Formed diaphragm frame for receiver

 #208
20140291784
2014-10-02

MEMS apparatus with increased back volume

 #209
20140226845
2014-08-14

Ported speaker and circuit board

 #210
20140224569
2014-08-14

Reflex Tube for a Ported Speaker

 #211
20140205133
2014-07-24

Orientation-responsive acoustic array control

 #212
20140205121
2014-07-24

Hearing device with two or more microphones and two or more resonators having different lengths and the same resonant frequency

 #213
20140198942
2014-07-17

Microphone

 #214
20140198940
2014-07-17

Tunable earphone

 #215
20140133685
2014-05-15

Microphone system with mechanically-coupled diaphragms

 #216
20140112515
2014-04-24

Dual diaphragm dynamic microphone transducer

 #217
20140072162
2014-03-13

Speaker box with U-shaped bending channels

 #218
20130343593
2013-12-26

Earphone having an acoustic tuning mechanism

 #219
20130294630
2013-11-07

Earphone device

 #220
20130236045
2013-09-12

ELECTRONIC APPARATUS FOR PREVENTING SPEAKERS FROM MAKING UNWANTED NOISE

 #221
20130101143
2013-04-25

MICRO-ELECTRO-MECHANICAL SYSTEM MICROPHONE CHIP WITH AN EXPANDED BACK CHAMBER

 #222
20130094688
2013-04-18

Resonator system for a speaker of an electronic device

 #223
20130094675
2013-04-18

MEMS microphone and method of manufacturing the same

 #224
20120328133
2012-12-27

Loudspeaker and electronic devices incorporating same

 #225
20120269376
2012-10-25

Earphone device

 #226
20120263330
2012-10-18

Hearing device with two or more microphones and two or more resonators having different lengths and the same resonant frequency

 #227
20120263325
2012-10-18

Orientation-responsive acoustic array control

 #228
20120250897
2012-10-04

Dual cell MEMS assembly

 #229
20120230511
2012-09-13

Microphone array with rear venting

 #230
20120148083
2012-06-14

Microphone package and method for manufacturing same

 #231
20120045081
2012-02-23

Acoustic systems for electronic devices

 #232
20110235821
2011-09-29

Variable directional microphone

 #233
20110064238
2011-03-17

MICROPHONE/SPEAKER DEVICE

 #234
20110026751
2011-02-03

High Acoustic Compliance Device for Loudspeaker Systems

 #235
20100189299
2010-07-29

Microphone adaptor for altering the geometry of a microphone without altering its frequency response characteristics

 #236
20100086163
2010-04-08

Resonator system for a speaker of an electronic device

 #237
20090257612
2009-10-15

Speaker assembly

 #238
20090245565
2009-10-01

Acoustic systems for electronic devices

 #239
20090238392
2009-09-24

Dynamic microphone

 #240
20090010449
2009-01-08

Microphone array with rear venting

 #241
20080292117
2008-11-27

Loudspeaker and electronic devices incorporating same

 #242
20080240482
2008-10-02

Arrangement For Optimizing the Frequency Response of an Electro-Acoustic Transducer

 #243
20080226110
2008-09-18

Microphone shield system

 #244
20080192962
2008-08-14

Microphone with dual transducers

 #245
20070189570
2007-08-16

Earphone device

 #246
20070026905
2007-02-01

Acoustic path for a wireless communications device

 #247
20050063560
2005-03-24

Microphone shield system

 #248
16936167
2022-11-15

Loudspeaker enclosures and loudspeaker devices

 #249
16177978
2020-09-01

Loudspeaker enclosures and loudspeaker devices

 #250
15834287
2019-01-08

Omnidirectional acoustic sensor

 #251
15417205
2018-03-13

Speaker box

 #252
15137405
2017-03-07

Multi-track stereo sound earphone