Patents-Review.com

H04R1/2803 - 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 for loudspeaker transducers

Recent Application in this class:
#1
20240340595
2024-10-10

ELECTROACOUSTIC DRIVERS AND LOUDSPEAKERS CONTAINING SAME

 #2
20240340576
2024-10-10

Ultrasonic Pump And Applications

 #3
20240340575
2024-10-10

SPEAKER BOX AND ELECTRONIC DEVICE

 #4
20240334115
2024-10-03

SYSTEMS AND METHODS FOR IMPROVED ACOUSTO-HAPTIC SPEAKERS

 #5
20240323588
2024-09-26

ELECTRONIC DEVICE AND SPEAKER MODULE

 #6
20240323579
2024-09-26

ACOUSTIC OUTPUT DEVICE AND COMPONENTS THEREOF

 #7
20240223689
2024-07-04

MOBILE TERMINAL FOR PREVENTING SOUND LEAKAGE AND SOUND OUTPUT METHOD FOR MOBILE TERMINAL

 #8
20240214719
2024-06-27

EARPHONE

 #9
20240205582
2024-06-20

ACOUSTIC DEVICE

 #10
20240179459
2024-05-30

SOUND-OUTPUT DEVICE

 #11
20240171892
2024-05-23

ACOUSTIC OUTPUT DEVICE AND NOISE REDUCTION AND SOUND TRANSMISSION DEVICE

 #12
20240129665
2024-04-18

Sound-output device

 #13
20240121551
2024-04-11

MODULAR QUICK-CONNECT A/V SYSTEM AND METHODS THEREOF

 #14
20240114287
2024-04-04

SPEAKER DEVICE

 #15
20240073579
2024-02-29

ACOUSTIC OUTPUT APPARATUS

 #16
20240056725
2024-02-15

Vibration transducer

 #17
20240048895
2024-02-08

LOUDSPEAKER WITH REDUCED AUDIO COLORATION CAUSED BY REFLECTIONS FROM A SURFACE

 #18
20240031734
2024-01-25

AUDIO OUTPUT DEVICE INCLUDING EXTENDED RESONANCE SPACE AND ELECTRONIC DEVICE INCLUDING THE SAME

 #19
20240031733
2024-01-25

Method and apparatus for a fragmented radial sound box hub device

 #20
20230421948
2023-12-28

LOUDSPEAKER

 #21
20230396912
2023-12-07

ACOUSTIC OUTPUT APPARATUS AND METHOD THEREOF

 #22
20230353933
2023-11-02

SYSTEM AND METHOD FOR GENERATING AN AUDIO SIGNAL

 #23
20230345171
2023-10-26

Loudspeaker, mobile device and method of manufacturing a loudspeaker

 #24
20230336902
2023-10-19

EARPHONE WITHOUT COVERING AN EAR CANAL

 #25
20230328448
2023-10-12

Electroacoustic drivers and loudspeakers containing same

 #26
20230319467
2023-10-05

SOUND-OUTPUT DEVICE

 #27
20230292040
2023-09-14

SPEAKER ENCLOSURE ATMOSPHERIC PRESSURE EQUALIZATION

 #28
20230276161
2023-08-31

ACOUSTIC OUTPUT APPARATUS

 #29
20230276160
2023-08-31

Acoustic output apparatus

 #30
20230262370
2023-08-17

Inductive acoustic filters for acoustic devices

 #31
20230239607
2023-07-27

PANEL SPEAKER

 #32
20230232145
2023-07-20

ACOUSTIC OUTPUT APPARATUS AND METHODS THEREOF

 #33
20230229205
2023-07-20

ELECTRONIC DEVICE

 #34
20230217183
2023-07-06

Electroacoustic drivers and loudspeakers containing same

 #35
20230217177
2023-07-06

Speaker device

 #36
20230209274
2023-06-29

Electroacoustic drivers and loudspeakers containing same

 #37
20230209247
2023-06-29

Acoustic device

 #38
20230199403
2023-06-22

Electroacoustic drivers and loudspeakers containing same

 #39
20230179925
2023-06-08

SPEAKERS

 #40
20230179910
2023-06-08

Loudspeaker polar pattern creation procedure

 #41
20230171536
2023-06-01

SOUND PRODUCTION USING SPEAKER ENCLOSURE WITH REDUCED INTERNAL PRESSURE

 #42
20230171528
2023-06-01

OPEN EARPHONE

 #43
20230164491
2023-05-25

Speaker

 #44
20230156391
2023-05-18

Acoustic output device

 #45
20230156390
2023-05-18

Acoustic output device

 #46
20230145038
2023-05-11

Acoustic output device

 #47
20230141946
2023-05-11

Acoustic output device

 #48
20230139537
2023-05-04

ELECTRONIC DEVICE

 #49
20230138715
2023-05-04

Loudspeaker system

 #50
20230128617
2023-04-27

Coaxial Speaker Horn, and Coaxial Speaker

 #51
20230109699
2023-04-13

Acoustic device

 #52
20230108414
2023-04-06

Electronic device including air vent

 #53
20230098125
2023-03-30

VEHICLE APPROACH NOTIFICATION SYSTEM AND VEHICLE APPROACH NOTIFICATION METHOD

 #54
20230090109
2023-03-23

Audio Generating Arrangement and Electronic Device Comprising Such Arrangement

 #55
20230082496
2023-03-16

HIGH PERFORMANCE LOUDSPEAKER ASSEMBLY

 #56
20230070507
2023-03-09

ACOUSTIC OUTPUT APPARATUS AND METHOD THEREOF

 #57
20230066263
2023-03-02

Acoustic output device

 #58
20230030850
2023-02-02

Horn-loaded loudspeaker

 #59
20230012124
2023-01-12

Acoustic output device and components thereof

 #60
20230008436
2023-01-12

Electronic device and speaker module

 #61
20230007404
2023-01-05

Vibration apparatus and apparatus and vehicular apparatus comprising the same

 #62
20230007388
2023-01-05

Electronic device

 #63
20230007380
2023-01-05

Acoustic output apparatus

 #64
20220408172
2022-12-22

ACOUSTIC OUTPUT APPARATUS

 #65
20220394378
2022-12-08

ENHANCING A LISTENING EXPERIENCE BY ADJUSTING PHYSICAL ATTRIBUTES OF AN AUDIO PLAYBACK SYSTEM BASED ON DETECTED ENVIRONMENTAL ATTRIBUTES OF THE SYSTEM'S ENVIRONMENT

 #66
20220394365
2022-12-08

ELECTROACOUSTIC DRIVERS AND LOUDSPEAKERS CONTAINING SAME

 #67
20220386020
2022-12-01

Holographic-based directional sound device

 #68
20220386012
2022-12-01

Acoustic output apparatus

 #69
20220345810
2022-10-27

Speaker box

 #70
20220345809
2022-10-27

Acoustic adapter for a loudspeaker driver

 #71
20220337938
2022-10-20

Modular quick-connect A/V system and methods thereof

 #72
20220312108
2022-09-29

Systems, methods, and devices for acoustic output

 #73
20220303679
2022-09-22

SOUND OUTPUT DEVICE

 #74
20220270585
2022-08-25

Earpiece device

 #75
20220270577
2022-08-25

DEVICE AND ELECTRONIC MUSICAL INSTRUMENT

 #76
20220264212
2022-08-18

Open earphone

 #77
20220248133
2022-08-04

Sound-output device

 #78
20220232311
2022-07-21

Loudspeaker polar pattern creation procedure

 #79
20220219587
2022-07-14

HEAD RESTRAINT

 #80
20220201397
2022-06-23

Noise canceling audio in/out device

 #81
20220179243
2022-06-09

Eyewear with parametric audio unit

 #82
20220174403
2022-06-02

Speaker module and wearable device

 #83
20220174399
2022-06-02

Loudspeaker with reduced audio coloration caused by reflections from a surface

 #84
20220174396
2022-06-02

Acoustic transducer and electronic device having slim speaker

 #85
20220116698
2022-04-14

Sound transmission holder and related speaker assembly electronic device

 #86
20220103932
2022-03-31

Speaker apparatus and acoustic system

 #87
20220086561
2022-03-17

Headphone earcup with adsorptive material

 #88
20220070576
2022-03-03

Compact speaker

 #89
20220070570
2022-03-03

Acoustic output device and noise reduction and sound transmission device

 #90
20220053269
2022-02-17

Single transducer audio in/out device

 #91
20220053261
2022-02-17

Loudspeaker

 #92
20220046351
2022-02-10

Headphone and grille unit

 #93
20220030347
2022-01-27

Acoustic output apparatus

 #94
20220021963
2022-01-20

Acoustic output apparatus and methods thereof

 #95
20210409875
2021-12-30

Sound-output device

 #96
20210400377
2021-12-23

Speaker

 #97
20210392422
2021-12-16

Electronic device

 #98
20210389797
2021-12-16

Electrical connectors for electronic devices

 #99
20210389796
2021-12-16

Electronic device architecture and components

 #100
20210377679
2021-12-02

Acoustic testing method and acoustic testing system thereof

 #101
20210377660
2021-12-02

Sound-output device

 #102
20210377645
2021-12-02

Acoustic output apparatus and method thereof

 #103
20210352399
2021-11-11

Method, system and devices for selective modal control for vibrating structures

 #104
20210329378
2021-10-21

Sound-output device

 #105
20210314685
2021-10-07

Portable electronic device

 #106
20210312153
2021-10-07

Portable electronic device

 #107
20210289281
2021-09-16

Acoustic output apparatus

 #108
20210274281
2021-09-02

Acoustic output apparatus

 #109
20210274280
2021-09-02

Acoustic output device and buttons thereof

 #110
20210274278
2021-09-02

Acoustic output apparatus

 #111
20210274276
2021-09-02

Earphone without covering an ear canal

 #112
20210271115
2021-09-02

Microphone noise reduction system and smart glasses using the system

 #113
20210266654
2021-08-26

Earphone including tuning means

 #114
20210243518
2021-08-05

Acoustic output device and components thereof

 #115
20210235181
2021-07-29

Acoustic output apparatus

 #116
20210227307
2021-07-22

SUPPORT BASE AND DISPLAY DEVICE

 #117
20210227306
2021-07-22

Audio glasses

 #118
20210223577
2021-07-22

Acoustic output device

 #119
20210204055
2021-07-01

Miniature loudspeaker module

 #120
20210195318
2021-06-24

Sound production using speaker enclosure with reduced internal pressure

 #121
20210185444
2021-06-17

Grill-integrated low-pass filter and speaker including the same

 #122
20210185421
2021-06-17

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

 #123
20210168500
2021-06-03

Acoustic output apparatus

 #124
20210168498
2021-06-03

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

 #125
20210168495
2021-06-03

Acoustic output apparatus

 #126
20210168485
2021-06-03

Open earphone

 #127
20210160610
2021-05-27

Acoustic output apparatus and methods thereof

 #128
20210160606
2021-05-27

Open earphone

 #129
20210160602
2021-05-27

Acoustic device

 #130
20210152774
2021-05-20

Terminal device and method for outputting audio

 #131
20210136472
2021-05-06

Recording high output power levels of sound at low sound pressure levels

 #132
20210127200
2021-04-29

Acoustic output device

 #133
20210127197
2021-04-29

Acoustic output apparatus

 #134
20210112329
2021-04-15

Open earphone

 #135
20210099790
2021-04-01

Speaker

 #136
20210067864
2021-03-04

Reinforced actuators for distributed mode loudspeakers

 #137
20200413170
2020-12-31

Balanced stereo headphones with un-balanced air chambers

 #138
20200404420
2020-12-24

Doppler compensation in coaxial and offset speakers

 #139
20200382860
2020-12-03

Modular quick-connect A/V system and methods thereof

 #140
20200359129
2020-11-12

Acoustic device

 #141
20200355110
2020-11-12

Method and apparatus for producing stratified streams

 #142
20200351581
2020-11-05

Enhancing a listening experience by adjusting physical attributes of an audio playback system based on detected environmental attributes of the system's environment

 #143
20200329301
2020-10-15

Opposing loudspeaker arrangement

 #144
20200314554
2020-10-01

Electronic device and control method thereof

 #145
20200296514
2020-09-17

DEVICE, SYSTEM AND METHOD FOR SERVO-CONTROLLED AUDIO SPEAKER

 #146
20200280798
2020-09-03

Reinforced actuators for distributed mode loudspeakers

 #147
20200280797
2020-09-03

Hanging speaker system

 #148
20200280777
2020-09-03

Speaker device and enclosure

 #149
20200228891
2020-07-16

Hanging speaker system

 #150
20200221216
2020-07-09

Loudspeaker with reduced audio coloration caused by reflections from a surface

 #151
20200204906
2020-06-25

Speaker box

 #152
20200196046
2020-06-18

Electronic device including acoustic module

 #153
20200186912
2020-06-11

AUDIO HEADSET DEVICE

 #154
20200155793
2020-05-21

MULTIFUNCTIONAL ENTERTAINMENT, PHYSIOTHERAPY AND HEALTH-CARE DEVICE BASED ON CLOUD PLATFORM AND BUS STRUCTURE

 #155
20200154186
2020-05-14

Outlet receptacle cover and mode throttling system

 #156
20200137482
2020-04-30

Sound generator for mobile entities

 #157
20200120427
2020-04-16

Method, system and devices for selective modal control for vibrating structures

 #158
20200120426
2020-04-16

Method and device for force concentration to enhance sound from flat panel loudspeakers

 #159
20200112784
2020-04-09

Device for controlling a loudspeaker and associated sound reproduction facility

 #160
20200092635
2020-03-19

External speaker assembly and audio apparatus

 #161
20200068281
2020-02-27

Dual-mode acoustic radiator speaker system

 #162
20200053452
2020-02-13

Sound production using speaker enclosure with reduced internal pressure

 #163
20200037062
2020-01-30

Sound absorbing material and speaker box using same

 #164
20200029141
2020-01-23

Expansion device having a speaker

 #165
20200021906
2020-01-16

Loudspeaker

 #166
20190364369
2019-11-28

Electro-acoustic transducer for open audio device

 #167
20190349656
2019-11-14

Dual-mode acoustic radiator speaker system

 #168
20190327544
2019-10-24

Electronic device with speaker module

 #169
20190313194
2019-10-10

Distributed mode loudspeaker electromagnetic actuator with axially and radially magnetized circuit

 #170
20190258293
2019-08-22

Mobile terminal sending out sound via multifunctional battery cover and method thereof

 #171
20190253788
2019-08-15

BUMPOUT MOTORIZED EXPANSION SYSTEM

 #172
20190246202
2019-08-08

Adjustable acoustic interface loudspeaker

 #173
20190238987
2019-08-01

Acoustic device

 #174
20190238975
2019-08-01

Audio source waveguide

 #175
20190238973
2019-08-01

Audio play apparatus and device

 #176
20190228395
2019-07-25

Audio signal control apparatus and method thereof

 #177
20190208297
2019-07-04

Loudspeaker grilles

 #178
20190200116
2019-06-27

Loudspeaker, mobile device and method of manufacturing a loudspeaker

 #179
20190200115
2019-06-27

Earcushion with acoustic tube

 #180
20190193612
2019-06-27

Headrest speakers with asymmetric radiation patterns

 #181
20190189096
2019-06-20

Instrument speaker art

 #182
20190182585
2019-06-13

ACOUSTIC LAYER IN MEDIA DEVICE PROVIDING ENHANCED AUDIO PERFORMANCE

 #183
20190182581
2019-06-13

Speaker module

 #184
20190166419
2019-05-30

Apparatus and method for outputting audio signal, and display apparatus using the same

 #185
20190141436
2019-05-09

Sound absorbing assembly for speaker module and speaker module

 #186
20190132668
2019-05-02

Sound reproduction system, mobile object, and sound reproduction method

 #187
20190082245
2019-03-14

Removable cartridge for insertion into portable communications device

 #188
20190069108
2019-02-28

Compact public address access point apparatuses

 #189
20190058933
2019-02-21

Speaker module

 #190
20190052943
2019-02-14

Loudspeaker

 #191
20190045284
2019-02-07

Recording high output power levels of sound at low sound pressure levels

 #192
20190014417
2019-01-10

Speaker box

 #193
20190014406
2019-01-10

Speaker box

 #194
20180359557
2018-12-13

Multi-function control of one or several multimedia playback devices

 #195
20180358943
2018-12-13

Audio playback device and audio control circuit of the same

 #196
20180354862
2018-12-13

Sound absorption material preparation method, sound absorption material and filling method thereof

 #197
20180343509
2018-11-29

Speaker system

 #198
20180332384
2018-11-15

Modular quick-connect A/V system and methods thereof

 #199
20180310092
2018-10-25

Ultrathin acoustic impedance converter

 #200
20180310086
2018-10-25

Loudspeaker system

 #201
20180302731
2018-10-18

Sound-absorbing material, sound-absorbing particle and speaker module manufacturing process, particle and module

 #202
20180288522
2018-10-04

Loudspeaker apparatus

 #203
20180288521
2018-10-04

Device and loudspeaker cabinet

 #204
20180270569
2018-09-20

System and method for a loudspeaker with a diaphragm

 #205
20180267093
2018-09-20

Disconnection detecting device, signal processing unit and disconnection detection method

 #206
20180213321
2018-07-26

Vibration inducing tactile apparatus

 #207
20180192184
2018-07-05

Outdoor speaker assembly and system

 #208
20180184205
2018-06-28

Ear unit and portable sound device

 #209
20180184192
2018-06-28

Earphone

 #210
20180184182
2018-06-28

Sound bar apparatus having detachable sound transducer

 #211
20180146282
2018-05-24

Loudspeaker with a gas adsorbing material and mobile device comprising a loudspeaker

 #212
20180146281
2018-05-24

Loudspeaker, loudspeaker driver and loudspeaker design process

 #213
20180132035
2018-05-10

Loudspeaker module

 #214
20180124520
2018-05-03

Frameless audio transducer for mobile applications including optionally supported coil wire and leads

 #215
20180098140
2018-04-05

Speaker grill with graduated hole sizing over a transition area for a media device

 #216
20180077485
2018-03-15

Loudspeaker system

 #217
20180070168
2018-03-08

Loudspeaker module

 #218
20180070167
2018-03-08

Wideband slot-loading loudspeaker

 #219
20180063631
2018-03-01

Shutter covered on sound hole of loudspeaker module and assembling method thereof, loudspeaker module

 #220
20180041829
2018-02-08

Outdoor speaker assembly and system

 #221
20180035199
2018-02-01

Loudspeaker module and electronic product

 #222
20180027321
2018-01-25

Loudspeaker enclosure with a sealed acoustic suspension chamber

 #223
20180007471
2018-01-04

Electrodynamic Transducer in Ultrasonic Mode

 #224
20180007463
2018-01-04

Speaker device for improving sound quality in high frequency band

 #225
20170353783
2017-12-07

Thin speaker module with a front acoustic cavity

 #226
20170332164
2017-11-16

Audio layer in keyboard device providing enhanced audio performance

 #227
20170322307
2017-11-09

Apparatus for sounding the atmosphere and method

 #228
20170295424
2017-10-12

SOUND GENERATING DEVICE

 #229
20170280231
2017-09-28

Loudspeaker with reduced audio coloration caused by reflections from a surface

 #230
20170280230
2017-09-28

Wearable device with sound sealing structure

 #231
20170257469
2017-09-07

Audio transducer and associated holding device for enhanced acoustic and electromagnetic coupling

 #232
20170251289
2017-08-31

Outlet receptacle cover and mode throttling system

 #233
20170230756
2017-08-10

MEMS LOUDSPEAKER DEVICE AND CORRESPONDING MANUFACTURING METHOD

 #234
20170208405
2017-07-20

PROGRAMMABLE DIGITAL SOUND REPRODUCTION NETWORK

 #235
20170208388
2017-07-20

Speaker system and electronic device using same

 #236
20170195780
2017-07-06

Earphone device that switched to an open-type or a closed-type earphone device

 #237
20170188134
2017-06-29

Reducing ported transducer array enclosure noise

 #238
20170180872
2017-06-22

Fluid diode loudspeaker

 #239
20170180846
2017-06-22

Conformable adaptors for diffraction slots in speakers

 #240
20170126867
2017-05-04

Audio transducer and associated holding device for enhanced acoustic and electromagnetic coupling

 #241
20170118548
2017-04-27

EARTIP AND EARPHONE DEVICE USING THE SAME

 #242
20170111739
2017-04-20

Method and portable electronic apparatus for adaptively adjusting playback effect of speakers

 #243
20170111019
2017-04-20

LOW FREQUENCY EQUALIZATION FOR LOUDSPEAKER SYSTEM

 #244
20170099536
2017-04-06

ELECTROACOUSTIC TRANSDUCER WITH FLEXIBLE COILWIRE CONNECTION

 #245
20170094403
2017-03-30

Acoustic filter for omnidirectional loudspeaker

 #246
20170078810
2017-03-16

Compact public address access point apparatuses

 #247
20170055065
2017-02-23

Speaker sound hole device

 #248
20170055054
2017-02-23

Speaker device

 #249
20170026756
2017-01-26

Speaker

 #250
20170026755
2017-01-26

Speaker

 #251
20170026726
2017-01-26

Speaker apparatus and electronic apparatus including same

 #252
20170013367
2017-01-12

Speaker

 #253
20170013366
2017-01-12

Acoustic transducer

 #254
20170013350
2017-01-12

Material for rapid gas sorption in loudspeakers

 #255
20160360312
2016-12-08

Dynamic acoustic waveguide

 #256
20160353191
2016-12-01

Customizable headphone audio driver assembly, headphone including such an audio driver assembly, and related methods

 #257
20160332583
2016-11-17

Acoustic enclosure for motor vehicle

 #258
20160330542
2016-11-10

Customization earphone structure and detachable audio broadcasting module thereof

 #259
20160309254
2016-10-20

Acoustic sound adsorption material having attached sphere matrix

 #260
20160302001
2016-10-13

DISPOSABLE HEADSET PROTECTOR

 #261
20160286304
2016-09-29

ACOUSTIC TRANSDUCER INCLUDING AIRFOIL FOR GENERATING SOUND

 #262
20160286303
2016-09-29

Acoustic device

 #263
20160277835
2016-09-22

Electronic device and method of controlling the same

 #264
20160269819
2016-09-15

Modular quick-connect A/V system and methods thereof

 #265
20160269812
2016-09-15

Modular quick-connect A/V system and methods thereof

 #266
20160255437
2016-09-01

LED lighting device and speaker

 #267
20160255430
2016-09-01

Acoustic device and headrest

 #268
20160249136
2016-08-25

LOUDSPEAKER AND LOUDSPEAKER DRIVER

 #269
20160249130
2016-08-25

Speaker baffle

 #270
20160232885
2016-08-11

Perforation acoustic muffler assembly and method of reducing noise transmission through objects

 #271
20160212523
2016-07-21

Acoustic waveguide

 #272
20160192075
2016-06-30

Speaker and vibration control unit

 #273
20160192046
2016-06-30

Loudspeaker box arrangement and loudspeaker box

 #274
20160174002
2016-06-16

Miniature speaker and speaker cabinet and hearing aid

 #275
20160173972
2016-06-16

Sealed speaker system having a pressure vent

 #276
20160157004
2016-06-02

Earphone with at least one air orifice

 #277
20160150313
2016-05-26

Actively suspended seat with bass loudspeakers

 #278
20160127824
2016-05-05

Woofer speaker and the rear sound cavity forming method thereof

 #279
20160127821
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