ClassID:

220241

H03G3/24 - CPC Classification

Classification description:

Gain control in amplifiers or frequency changers without distortion of the input signal; Automatic control in amplifiers having discharge tubes Control dependent upon ambient noise level or sound level

Recent Application in this class:
#1
20250150759
2025-05-08

Sound Generation Device And Applications

#2
20230223907
2023-07-13

SYSTEM AND METHOD FOR AUTOMATIC ADJUSTMENT OF REFERENCE GAIN

#3
20230199391
2023-06-22

Sound Generation Device And Applications

#4
20230179160
2023-06-08

COMPENSATION FOR AMBIENT SOUND SIGNALS TO FACILITATE ADJUSTMENT OF AN AUDIO VOLUME

#5
20220352860
2022-11-03

Passive sub-audible room path learning with noise modeling

#6
20220276831
2022-09-01

Monitoring loudness level during media replacement event using shorter time constant

#7
20220253275
2022-08-11

Detection of media playback loudness level and corresponding adjustment to audio during media replacement event

#8
20220212020
2022-07-07

Variable sound system for audio devices

#9
20220140798
2022-05-05

Compensation for ambient sound signals to facilitate adjustment of an audio volume

#10
20220004355
2022-01-06

Method, apparatus and computer-readable media utilizing positional information to derive AGC output parameters

#11
20210311697
2021-10-07

Detection of volume adjustments during media replacement events using loudness level profiles

#12
20210289305
2021-09-16

Method and device for controlling recording volume, and storage medium

#13
20210271448
2021-09-02

Monitoring loudness level during media replacement event using shorter time constant

#14
20210250009
2021-08-12

System and method for automatic adjustment of reference gain

#15
20210195335
2021-06-24

Sound generation device and applications

#16
20210159867
2021-05-27

Context based volume adaptation by voice assistant devices

#17
20210085991
2021-03-25

Variable sound system for audio devices

#18
20210026592
2021-01-28

Audio signal control based on noise associated with state information received from an external device

#19
20200296279
2020-09-17

Imaging apparatus

#20
20200253379
2020-08-13

METHOD AND SYSTEM FOR CONTROLLING AN ACTUATOR

#21
20200213732
2020-07-02

Volume adjusting method, device, and terminal device

#22
20200186113
2020-06-11

Volume adjusting method and mobile terminal

#23
20200162049
2020-05-21

Detection of volume adjustments during media replacement events using loudness level profiles

#24
20200162048
2020-05-21

Monitoring loudness level during media replacement event using shorter time constant

#25
20200159489
2020-05-21

Detection of media playback loudness level and corresponding adjustment to audio during media replacement event

#26
20200092646
2020-03-19

Playback system, control device, control method, and program

#27
20200076389
2020-03-05

Electronic device and operation method thereof

#28
20200067474
2020-02-27

Automatic volume control for land mobile radio

#29
20200009395
2020-01-09

Variable sound system for audio devices

#30
20190362735
2019-11-28

Automatic correction of loudness level in audio signals containing speech signals

#31
20190289420
2019-09-19

Gain control in spatial audio systems

#32
20190255342
2019-08-22

Variable sound system for audio devices

#33
20180205354
2018-07-19

Automatic volume control for land mobile radio

#34
20180074782
2018-03-15

Method, apparatus and computer-readable media utilizing positional information to derive AGC output parameters

#35
20170346448
2017-11-30

Variable gain low noise amplifier

#36
20170289486
2017-10-05

Methods and systems for environmental noise compensation

#37
20170274215
2017-09-28

Variable sound system for audio devices

#38
20160149547
2016-05-26

AUTOMATED AUDIO ADJUSTMENT

#39
20160111087
2016-04-21

Automatic volume control based on speech recognition

#40
20160087597
2016-03-24

Automatic volume control for land mobile radio

#41
20160043699
2016-02-11

Audio processing system and audio processing method

#42
20150256140
2015-09-10

Variable sound system for medical devices

#43
20150244337
2015-08-27

Method and apparatus for automatically controlling gain based on sensitivity of microphone in electronic device

#44
20150171813
2015-06-18

Compensation for ambient sound signals to facilitate adjustment of an audio volume

#45
20150092951
2015-04-02

Headphone with active noise cancelling and auto-calibration method thereof

#46
20150063598
2015-03-05

Sound control for network-connected devices

#47
20150010162
2015-01-08

Systems and methods for optimizing an audio communication system

#48
20140185828
2014-07-03

Ambient audio injection

#49
20120071997
2012-03-22

Method and apparatus for providing information about the source of a sound via an audio device

#50
20120027225
2012-02-02

Bell sound outputting apparatus and method thereof

#51
20120014537
2012-01-19

System and method for automatic microphone volume setting

#52
20120008802
2012-01-12

Voice detection for automatic volume controls and voice sensors

#53
20110071822
2011-03-24

Selective audio/sound aspects

#54
20110069845
2011-03-24

Selective audio/sound aspects

#55
20110069843
2011-03-24

Selective audio/sound aspects

#56
20100239110
2010-09-23

Systems and Methods for Optimizing an Audio Communication System

#57
20080130908
2008-06-05

Selective audio/sound aspects

#58
16257422
2020-11-24

Loudspeaker-induced noise mitigation

#59
15685561
2019-01-01

Audio adjustment based on dynamic and static rules

#60
15664433
2018-11-27

Engine sound production systems and methods

#61
15627174
2018-02-13

System and method for selective volume adjustment in a vehicle

#62
14197902
2019-03-05

Application controlled variable audio ear plugs