ClassID:

231908

H04R1/245 - CPC Classification

Classification description:

Details of transducers, loudspeakers or microphones; Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only; Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges of microphones

Recent Application in this class:
#1
20260136145
2026-05-14

AUDIO SYSTEM AND METHOD

#2
20260006360
2026-01-01

HEADPHONES

#3
20250280233
2025-09-04

ACOUSTIC DEVICES

#4
20250267404
2025-08-21

MICROPHONE ARRANGEMENT

#5
20250193570
2025-06-12

EARPHONE WITHOUT COVERING AN EAR CANAL

#6
20250097630
2025-03-20

PIEZOELECTRIC VOICE ACCELEROMETER WITH BACK CAVITY AIR PRESSURE COUPLING AND MULTIPLE RESONANCE PEAKS

#7
20250039591
2025-01-30

ACOUSTIC OUTPUT APPARATUS

#8
20250030969
2025-01-23

ACOUSTIC OUTPUT APPARATUS AND METHODS THEREOF

#9
20250016487
2025-01-09

ACOUSTIC OUTPUT APPARATUS

#10
20240422466
2024-12-19

OPEN EARPHONE

#11
20240406611
2024-12-05

ACOUSTIC OUTPUT APPARATUS

#12
20240388831
2024-11-21

ACOUSTIC OUTPUT DEVICE

#13
20240323579
2024-09-26

ACOUSTIC OUTPUT DEVICE AND COMPONENTS THEREOF

#14
20240284093
2024-08-22

Microphone module

#15
20240205582
2024-06-20

Acoustic device

#16
20240171892
2024-05-23

ACOUSTIC OUTPUT DEVICE AND NOISE REDUCTION AND SOUND TRANSMISSION DEVICE

#17
20240114286
2024-04-04

DIGITAL LAVALIER MICROPHONE

#18
20240073579
2024-02-29

Acoustic output apparatus

#19
20230396912
2023-12-07

ACOUSTIC OUTPUT APPARATUS AND METHOD THEREOF

#20
20230336902
2023-10-19

Earphone without covering an ear canal

#21
20230328426
2023-10-12

Co-located microelectromechanical system microphone and sensor with minimal acoustic coupling

#22
20230276161
2023-08-31

Acoustic output apparatus

#23
20230276160
2023-08-31

Acoustic output apparatus

#24
20230269524
2023-08-24

Multi-cavity packaging for microelectromechanical system microphones

#25
20230232145
2023-07-20

Acoustic output apparatus and methods thereof

#26
20230224646
2023-07-13

Capacitive MEMS microphone, microphone unit and electronic device

#27
20230171528
2023-06-01

Open earphone

#28
20230156391
2023-05-18

Acoustic output device

#29
20230156390
2023-05-18

Acoustic output device

#30
20230145038
2023-05-11

Acoustic output device

#31
20230141946
2023-05-11

Acoustic output device

#32
20230109699
2023-04-13

Acoustic device

#33
20230070507
2023-03-09

ACOUSTIC OUTPUT APPARATUS AND METHOD THEREOF

#34
20230066263
2023-03-02

Acoustic output device

#35
20230012124
2023-01-12

Acoustic output device and components thereof

#36
20230007380
2023-01-05

Acoustic output apparatus

#37
20220408172
2022-12-22

Acoustic output apparatus

#38
20220386012
2022-12-01

Acoustic output apparatus

#39
20220360891
2022-11-10

Audio zoom

#40
20220337946
2022-10-20

One-dimensional array microphone with improved directivity

#41
20220264212
2022-08-18

Open earphone

#42
20220150620
2022-05-12

Acoustic inspection apparatus and acoustic inspection method

#43
20220070570
2022-03-03

Acoustic output device and noise reduction and sound transmission device

#44
20220030347
2022-01-27

Acoustic output apparatus

#45
20220021963
2022-01-20

Acoustic output apparatus and methods thereof

#46
20210377645
2021-12-02

Acoustic output apparatus and method thereof

#47
20210329395
2021-10-21

Directional acoustic sensor and electronic device including the same

#48
20210289281
2021-09-16

Acoustic output apparatus

#49
20210274281
2021-09-02

Acoustic output apparatus

#50
20210274280
2021-09-02

Acoustic output device and buttons thereof

#51
20210274278
2021-09-02

Acoustic output apparatus

#52
20210274276
2021-09-02

Earphone without covering an ear canal

#53
20210271115
2021-09-02

Microphone noise reduction system and smart glasses using the system

#54
20210249006
2021-08-12

Systems and methods for generating a singular voice audio stream

#55
20210243518
2021-08-05

Acoustic output device and components thereof

#56
20210243516
2021-08-05

Ear tip with wedge-shaped apertures and earpiece with the same

#57
20210235181
2021-07-29

Acoustic output apparatus

#58
20210227306
2021-07-22

Audio glasses

#59
20210223577
2021-07-22

Acoustic output device

#60
20210168500
2021-06-03

Acoustic output apparatus

#61
20210168498
2021-06-03

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

#62
20210168485
2021-06-03

Open earphone

#63
20210160610
2021-05-27

Acoustic output apparatus and methods thereof

#64
20210160606
2021-05-27

Open earphone

#65
20210160602
2021-05-27

Acoustic device

#66
20210136483
2021-05-06

Structure of micro-electro-mechanical-system microphone and method for fabricating the same

#67
20210127200
2021-04-29

Acoustic output device

#68
20210127197
2021-04-29

Acoustic output apparatus

#69
20210112329
2021-04-15

Open earphone

#70
20210058702
2021-02-25

One-dimensional array microphone with improved directivity

#71
20200132742
2020-04-30

Audio spectrum analyzer and method of arranging resonators included therein

#72
20200058315
2020-02-20

Cardioid microphone adaptive filter

#73
20190191245
2019-06-20

APPARATUS AND METHOD TO BIAS MEMS MOTORS

#74
20190174244
2019-06-06

Directional acoustic sensor and electronic device including the same

#75
20190028799
2019-01-24

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

#76
20180376239
2018-12-27

Sound collecting apparatus

#77
20180184356
2018-06-28

Wireless microphone system

#78
20180130485
2018-05-10

Auto voice trigger method and audio analyzer employing the same

#79
20180038901
2018-02-08

Audio spectrum analyzer and method of arranging resonators included therein

#80
20170325020
2017-11-09

System and method for generating a self-steering beamformer

#81
20170223455
2017-08-03

Apparatus and method to bias MEMS motors

#82
20170220036
2017-08-03

Drone flight control

#83
20170118553
2017-04-27

Vibration compensated vibro acoustical assembly

#84
20170006385
2017-01-05

Audio sensing device and method of acquiring frequency information

#85
20160100246
2016-04-07

Unidirectional condenser microphone unit

#86
20160050506
2016-02-18

Audio sensing device and method of acquiring frequency information

#87
20160037266
2016-02-04

Capacitance type sensor, acoustic sensor, and microphone

#88
20160019026
2016-01-21

Distinguishing speech from multiple users in a computer interaction

#89
20150146885
2015-05-28

Systems and methods for providing a wideband frequency response

#90
20150078591
2015-03-19

Acoustic transducer and microphone

#91
20140205121
2014-07-24

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

#92
20140191233
2014-07-10

Microphone component

#93
20130101151
2013-04-25

Noise mitigating microphone system and method

#94
20120263330
2012-10-18

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

#95
20120207324
2012-08-16

Multiple microphone system

#96
20120207315
2012-08-16

Audio processing apparatus with noise reduction and method of controlling the audio processing apparatus

#97
20120123773
2012-05-17

System and method for multi-channel noise suppression

#98
20120123772
2012-05-17

System and method for multi-channel noise suppression based on closed-form solutions and estimation of time-varying complex statistics

#99
20120123771
2012-05-17

Method and apparatus for wind noise detection and suppression using multiple microphones

#100
20120121100
2012-05-17

Method and apparatus for wind noise detection and suppression using multiple microphones

#101
20120053711
2012-03-01

Porting audio using a connector in a small form factor electronic device

#102
20120033832
2012-02-09

Microphone and accelerometer

#103
20110235821
2011-09-29

Variable directional microphone

#104
20100054495
2010-03-04

Noise mitigating microphone system and method

#105
20090232338
2009-09-17

Electroacoustic transducer having multi-channel diaphragm and hearing aid using the same

#106
20090140612
2009-06-04

Vibration-Wave Detector

#107
20080049953
2008-02-28

Multiple microphone system

#108
20070269059
2007-11-22

Microphone

#109
20070076908
2007-04-05

MULTIPLE CHANNEL AUDIO ENCODER USING DIFFERENCE SIGNAL

#110
20070047744
2007-03-01

Noise mitigating microphone system and method

#111
20070025565
2007-02-01

Stereo speaker system having acoustic filter for improving low frequency characteristic

#112
20050254661
2005-11-17

Wireless device for capturing multiple channel audio