ClassID:

231915

H04R1/2815 - 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 bass reflex type

Sub-classes:
Recent Application in this class:
#1
20240048896
2024-02-08

DISPLAY APPARATUS

#2
20210127189
2021-04-29

Display apparatus

#3
20210092511
2021-03-25

Speaker

#4
20200396535
2020-12-17

Auto-configurable bass loudspeaker

#5
20200021906
2020-01-16

Loudspeaker

#6
20190320256
2019-10-17

Sound output device

#7
20190313181
2019-10-10

Speaker device and speaker cabinet

#8
20190297413
2019-09-26

Bass reflex port and bass reflex type speaker

#9
20190110115
2019-04-11

Electronic instrument and illumination system

#10
20180324520
2018-11-08

Speaker device

#11
20180295449
2018-10-11

Loudspeaker magnet and earphone assembly

#12
20180234751
2018-08-16

Multiple MEMS motor apparatus with common vent

#13
20180167722
2018-06-14

Loudspeaker system with directivity

#14
20180124484
2018-05-03

ENHANCING AUDIO PERFORMANCE OF A CONSUMER ELECTRONIC DEVICE BY PRODUCING COMPENSATION PARAMETERS BASED ON THE ACOUSTIC SIGNATURE OF THE DEVICE

#15
20180035201
2018-02-01

Speaker assemblies for passive generation of vibrations and related headphone devices and methods

#16
20170111720
2017-04-20

Multi-microphone porting and venting structure for a communication device

#17
20170041705
2017-02-09

Speaker and electronic device having the speaker

#18
20160294106
2016-10-06

Connector assembly

#19
20160261938
2016-09-08

Enhancing audio performance of a consumer electronic device by producing compensation parameters based on the acoustic signature of the device

#20
20160192064
2016-06-30

Speaker assemblies for passive generation of vibrations and related headphone devices and methods

#21
20150110320
2015-04-23

Earphone assembly

#22
20150086057
2015-03-26

Bass reflex loudspeaker system with phase correction element

#23
20140348369
2014-11-27

Decoupled drive unit for a loudspeaker enclosure

#24
20140262598
2014-09-18

Bass reflex port and tubular body

#25
20140262597
2014-09-18

Tubular body, bass reflex port, and acoustic apparatus

#26
20130343579
2013-12-26

Portable loudspeaker

#27
20130260823
2013-10-03

Compact Portable Electronic Device Having Augmented Back Volume for Speaker

#28
20050201583
2005-09-15

Low frequency surface array

#29
19200926
2025-07-29

Loudspeaker system having an acoustic meta material enclosure

#30
15058813
2017-03-07

Headphone