ClassID:

231921

H04R1/2842 - 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 of the bandpass type for loudspeaker transducers

Recent Application in this class:
#1
20250024189
2025-01-16

NON-BLOCKING DUAL DRIVER EARPHONES

#2
20240397254
2024-11-28

MINIATURE LOUDSPEAKER

#3
20240381023
2024-11-14

SPEAKER DEVICE

#4
20240365047
2024-10-31

SPEAKER DEVICE

#5
20240114287
2024-04-04

Speaker device

#6
20240031738
2024-01-25

LOUDSPEAKER, SIGNAL PROCESSOR, METHOD FOR MANUFACTURING THE LOUDSPEAKER, OR METHOD FOR OPERATING THE SIGNAL PROCESSOR BY USING DUAL-MODE SIGNAL GENERATION WITH TWO SOUND GENERATORS

#7
20240027795
2024-01-25

SMART GLASSES WITH ACOUSTIC CHANNEL

#8
20230308801
2023-09-28

Non-blocking dual driver earphones

#9
20230247346
2023-08-03

Loudspeaker arrangement

#10
20230030850
2023-02-02

Horn-loaded loudspeaker

#11
20220360886
2022-11-10

Speaker with multiple resonators

#12
20220109933
2022-04-07

Non-blocking dual driver earphones

#13
20220103946
2022-03-31

Sound box assembly, display apparatus, and audio output method

#14
20220070577
2022-03-03

Acoustic device and electronic apparatus

#15
20210204055
2021-07-01

Miniature loudspeaker module

#16
20210088981
2021-03-25

Pressure-sensing system for a wearable electronic device

#17
20210014633
2021-01-14

Multi-tuned speaker system

#18
20200413182
2020-12-31

Sound transducer structure of electronic device

#19
20200366984
2020-11-19

Sound producing device

#20
20200314546
2020-10-01

Speaker box and speaker

#21
20200137483
2020-04-30

Directive multiway loudspeaker with a waveguide

#22
20200100021
2020-03-26

Acoustic chambers damped with side-branch resonators, and related systems and methods

#23
20200029150
2020-01-23

Multi-driver loudspeaker with cross-coupled dual wave-columns

#24
20190335255
2019-10-31

Acoustic transducer apparatus

#25
20190268701
2019-08-29

Miniature speaker with acoustical mass

#26
20190246200
2019-08-08

Extension system of woofer and design method thereof

#27
20190222921
2019-07-18

Electronic device including speaker

#28
20190199839
2019-06-27

Mobile terminal

#29
20180374473
2018-12-27

Exhaust system sound generation assembly unit

#30
20180288518
2018-10-04

Non-blocking dual driver earphones

#31
20180262836
2018-09-13

Multi-driver array audio speaker system

#32
20180213319
2018-07-26

Sound generator

#33
20180206011
2018-07-19

Loudspeaker module and terminal device

#34
20180199129
2018-07-12

Earphone

#35
20180192184
2018-07-05

Outdoor speaker assembly and system

#36
20180115820
2018-04-26

Speaker box

#37
20180081406
2018-03-22

Acoustic device

#38
20180070168
2018-03-08

Loudspeaker module

#39
20180027321
2018-01-25

Loudspeaker enclosure with a sealed acoustic suspension chamber

#40
20180007464
2018-01-04

Speaker structure with a loading hole

#41
20170374451
2017-12-28

Electronic device

#42
20170361779
2017-12-21

Speaker device for vehicle, and vehicle having the speaker device

#43
20170353787
2017-12-07

Passive cardioid speaker

#44
20170332167
2017-11-16

Speaker device with enhancement of bass and electronic device therewith

#45
20170318384
2017-11-02

Manipulation of playback device response using an acoustic filter

#46
20170311061
2017-10-26

Loudspeaker module

#47
20170289675
2017-10-05

Loudspeaker system with directional output character

#48
20170289674
2017-10-05

Resonance damping for audio transducer systems

#49
20170272868
2017-09-21

Driver with acoustic filter chamber

#50
20170245049
2017-08-24

Acoustic element for a speaker

#51
20170245048
2017-08-24

Transducer assembly with acoustic mass

#52
20170245044
2017-08-24

Ambient sonic low-pressure equalization

#53
20170238085
2017-08-17

In-ear monitor

#54
20170171659
2017-06-15

Subwoofer structure for vehicle

#55
20170171655
2017-06-15

Ambient sonic low-pressure equalization

#56
20170134848
2017-05-11

Speaker module

#57
20170070796
2017-03-09

Loudspeaker module emitting sound at lateral side

#58
20170055066
2017-02-23

Manipulation of playback device response using an acoustic filter

#59
20160373865
2016-12-22

Unidirectional condenser microphone

#60
20160286305
2016-09-29

Miniature loudspeaker module, method for enhancing frequency response thereof, and electronic device

#61
20160261949
2016-09-08

Speaker module

#62
20160219369
2016-07-28

Vented loudspeaker system with duct for cooling of internal components

#63
20160198256
2016-07-07

Perforated phase alignment tweeter screen

#64
20160192067
2016-06-30

Hand-held information processing apparatus

#65
20160165335
2016-06-09

Loudspeaker with a helmholtz resonator

#66
20160157021
2016-06-02

Electroacoustic transducer

#67
20160088386
2016-03-24

Loudspeaker system audio recovery imaging amplifier

#68
20160021453
2016-01-21

Apparatus for use in portable devices

#69
20150382090
2015-12-31

Compact wideband bass and midrange horn-loaded speaker system

#70
20150358705
2015-12-10

Ultrathin speaker module

#71
20150304747
2015-10-22

Speaker module

#72
20150304746
2015-10-22

Acoustic element for a speaker

#73
20150256922
2015-09-10

Resonance damping for audio transducer systems

#74
20150189424
2015-07-02

External sound box, loudspeaker module with same and electronic device

#75
20150003658
2015-01-01

Speaker device

#76
20140369533
2014-12-18

Electronic device with side acoustic emission type speaker device

#77
20140348349
2014-11-27

Speaker device

#78
20140341420
2014-11-20

Acoustic transducer apparatus

#79
20140270277
2014-09-18

Sounder assembly for explosive environment

#80
20140270270
2014-09-18

Loudspeaker unit

#81
20140153763
2014-06-05

Integrated speaker assembly for personal media device

#82
20140072159
2014-03-13

LEAK TOLERANT ACOUSTIC TRANSDUCER FOR MOBILE DEVICE

#83
20140037125
2014-02-06

Rectangular wall mounted speaker assembly with four corner walls and corner mounting bracket

#84
20130322656
2013-12-05

Loudspeaker system

#85
20130259285
2013-10-03

Loudspeaker system, Audio Recovery Imaging Amplifier

#86
20130223667
2013-08-29

TERMINAL HAVING SPEAKER UNIT

#87
20130170688
2013-07-04

Speaker with a large volume chamber and a smaller volume chamber

#88
20130163800
2013-06-27

SPEAKER DEVICE

#89
20120257776
2012-10-11

Apparatus for use in portable devices

#90
20120219171
2012-08-30

Loudspeaker assembly and system

#91
20120189150
2012-07-26

Subwoofer structure and adjusting method

#92
20120163649
2012-06-28

Insert earphone using a moving coil driver

#93
20120128189
2012-05-24

Integrated speaker assembly for personal media device

#94
20120106768
2012-05-03

Front resonator for a speaker of a wireless device

#95
20120070020
2012-03-22

SPEAKER DEVICE, AUDIO CONTROL DEVICE, WALL ATTACHED WITH SPEAKER DEVICE

#96
20120055827
2012-03-08

Case for a handheld electronic device

#97
20120039502
2012-02-16

Film-type audio output apparatus

#98
20120008813
2012-01-12

Baffle vibration reducing

#99
20110280432
2011-11-17

Rectangular wall mounted speaker assembly

#100
20110268309
2011-11-03

HANDSET LEAK-TOLERANT RECEIVER

#101
20110260875
2011-10-27

ALERT DEVICE AND METHOD

#102
20110216933
2011-09-08

Elastomer Loudspeaker Box System

#103
20110211723
2011-09-01

Earphone cushions

#104
20110176703
2011-07-21

SPEAKER DEVICE

#105
20110081035
2011-04-07

Miniaturized receiver assembly for in-ear noise-isolating earphones

#106
20110042161
2011-02-24

Front resonator for a speaker of a wireless device

#107
20110034218
2011-02-10

In-Ear Earphone

#108
20110033066
2011-02-10

Circular speaker

#109
20110019862
2011-01-27

Ceiling-mounted loudspeaker enclosure

#110
20110007928
2011-01-13

Headphone

#111
20100303264
2010-12-02

Apparatus and method for reproduction of stereo sound

#112
20100272303
2010-10-28

Headset

#113
20100254556
2010-10-07

Receiver assemblies

#114
20100206658
2010-08-19

Enclosing adsorbent material

#115
20100189297
2010-07-29

Handheld electronic device having hidden sound openings offset from an audio source

#116
20100182741
2010-07-22

Handheld electronic device having hidden sound openings offset from an audio source

#117
20100142741
2010-06-10

Loudspeaker

#118
20100135516
2010-06-03

Loudspeaker system

#119
20100111350
2010-05-06

Electronic devices including vertically mounted loudspeakers and related assemblies and methods

#120
20100061578
2010-03-11

Portable electronic apparatus

#121
20100054521
2010-03-04

Electronic device

#122
20100053863
2010-03-04

HANDHELD ELECTRONIC DEVICE HAVING HIDDEN SOUND OPENINGS OFFSET FROM AN AUDIO SOURCE

#123
20100034415
2010-02-11

Portable electronic device with spatial module

#124
20090323995
2009-12-31

Miniature Planar Acoustic Networks

#125
20090310808
2009-12-17

Waveguide

#126
20090296971
2009-12-03

Hearing Instrument Receiver With Improved Low-Frequency Efficiency

#127
20090252363
2009-10-08

Loudspeaker assembly

#128
20090233651
2009-09-17

Speaker apparatus combining earpiece and hands free functions

#129
20090232324
2009-09-17

Semi-insert hearing protector having a helmholtz-type resonator

#130
20090208026
2009-08-20

Baffle vibration reducing

#131
20090190788
2009-07-30

Speaker set for portable electronic device

#132
20090169041
2009-07-02

Acoustic reconfiguration devices and methods

#133
20090168024
2009-07-02

Electronic apparatus housing cover, electronic apparatus, and projector

#134
20090129623
2009-05-21

Speaker Apparatus in a Wireless Communication Device

#135
20090127021
2009-05-21

SPEAKER SET AND PORTABLE ELECTRONIC DEVICE INCORPORATING SAME

#136
20090067658
2009-03-12

PORTABLE OVER-THE-EAR MINIATURE SOUND BOX DEVICE

#137
20080226088
2008-09-18

Audio Transducer System

#138
20080219490
2008-09-11

Speaker set for electronic product

#139
20080191582
2008-08-14

Generating device for generating a useful stream of a medium, in particular for generating sound

#140
20080166009
2008-07-10

Integrated speaker assembly for personal media device

#141
20080152180
2008-06-26

Film-type audio output apparatus

#142
20080149417
2008-06-26

Acoustic assembly for personal media device

#143
20080137894
2008-06-12

Loudspeaker system with reduced rear sound radiation

#144
20080101646
2008-05-01

In-plane speaker

#145
20080029335
2008-02-07

Sound enhancement module

#146
20080013774
2008-01-17

Earphone for placement in an ear

#147
20080002835
2008-01-03

In-ear headphones

#148
20070280497
2007-12-06

Communications Unit With Arrangement For Loud Reproduction Of Sound

#149
20070256888
2007-11-08

Speaker System With Improved Frequency Response

#150
20070252810
2007-11-01

Handheld electronic device having hidden sound openings offset from an audio source

#151
20070201717
2007-08-30

Earphone ambient eartip

#152
20070195984
2007-08-23

Multiple channel earphone

#153
20070189573
2007-08-16

Speaker and speaker unit

#154
20070189569
2007-08-16

Insert earphone using a moving coil driver

#155
20070154053
2007-07-05

RESONANCE CHAMBER OF MOBILE PHONE

#156
20070147646
2007-06-28

Electro-acoustic apparatus comprising an electro-acoustic transducer

#157
20070116321
2007-05-24

Speaker for mobile communication terminal

#158
20070071267
2007-03-29

Speaker device for portable terminal and portable terminal implementing the same

#159
20070025582
2007-02-01

Handheld electronic device having offset sound openings

#160
20070014424
2007-01-18

Double-resonator micro-speaker assemblies and methods for tuning the same

#161
20070003076
2007-01-04

Bandpass woofer enclosure with multiple acoustic filters

#162
20060291687
2006-12-28

Vehicle-mounted speaker device and vehicle having the same

#163
20060239478
2006-10-26

Loudspeaker, loudspeaker module, and electronic equipment using the loudspeaker module

#164
20060219474
2006-10-05

Multimedia speaker product

#165
20060194618
2006-08-31

Speaker assemblies and mobile terminals including the same

#166
20060158064
2006-07-20

Piezoelectric sounding body and electronic device

#167
20060120549
2006-06-08

Sound generating apparatus, a mobile electric device and a system for generating sound

#168
20060042870
2006-03-02

Flat panel speaker system with a coated diaphragm

#169
20060013430
2006-01-19

System and method to enhance reproduction of sub-bass frequencies

#170
20050135647
2005-06-23

Acoustic enclosure for single audio transducer

#171
20050123162
2005-06-09

Externally ported loudspeaker enclosure

#172
20050111673
2005-05-26

Baffle vibration reducing

#173
20050039975
2005-02-24

Speaker system

#174
20050014537
2005-01-20

Speaker assemblies and mobile terminals including the same

#175
18330146
2024-04-23

Techniques for loudspeaker constrained acoustic modulator (CAM)

#176
17456536
2023-03-14

Loudspeaker

#177
17390100
2022-10-11

Horn-loaded loudspeaker