ClassID:

220274

H03G5/025 - CPC Classification

Classification description:

Tone control or bandwidth control in amplifiers; Manually-operated control Equalizers; Volume or gain control in limited frequency bands

Recent Application in this class:
#1
20260120703
2026-04-30

SETTING TUNING/PRESETS FOR AUDIO BEING PLAYED FROM PLURAL SOURCES

#2
20260074667
2026-03-12

Techniques for Enabling Interoperability between Media Playback Systems

#3
20250392851
2025-12-25

Display System Having An Audio Output Device

#4
20250077173
2025-03-06

SMART AUDIO SETTINGS

#5
20240411653
2024-12-12

Adjusting a Playback Device

#6
20240323628
2024-09-26

SOUND PROCESSING APPARATUS AND SOUND PROCESSING SYSTEM

#7
20240171146
2024-05-23

Techniques for Enabling Interoperability between Media Playback Systems

#8
20240072751
2024-02-29

ACOUSTIC PROCESSING DEVICE AND ACOUSTIC PROCESSING METHOD

#9
20240031716
2024-01-25

Display System Having An Audio Output Device

#10
20230412136
2023-12-21

GAIN EQUALIZER AND METHOD FOR CONTROLLING TUNABLE GAIN OF GAIN EQUALIZER

#11
20230393806
2023-12-07

Smart audio settings

#12
20230247379
2023-08-03

Sound processing apparatus and sound processing system

#13
20230247358
2023-08-03

SIGNAL PROCESSING METHOD, APPARATUS AND ELECTRONIC DEVICE

#14
20230130787
2023-04-27

Adjusting a playback device

#15
20230043753
2023-02-09

Smart audio settings

#16
20220400341
2022-12-15

Method for equalizing input signal to generate equalizer output signal and associated parametric equalizer

#17
20220328025
2022-10-13

Deep encoder for performing audio processing

#18
20220303704
2022-09-22

Sound processing apparatus and sound processing system

#19
20220303393
2022-09-22

Resolving bad audio during conference call

#20
20220247363
2022-08-04

Amplifier assembly and method of amplification particularly for portable device

#21
20220131511
2022-04-28

Techniques for enabling interoperability between media playback systems

#22
20220116704
2022-04-14

Genetic-algorithm-based equalization using IIR filters

#23
20220095066
2022-03-24

Sound processing apparatus and sound processing system

#24
20210337310
2021-10-28

System and method for digital signal processing

#25
20210185446
2021-06-17

SYSTEM AND METHOD FOR CUSTOMIZING SOUND AND EQUALIZATION FOR AUDIO DEVICES

#26
20210109831
2021-04-15

Adjusting a playback device

#27
20210076132
2021-03-11

Method and system for optimizing the low-frequency sound rendition of an audio signal

#28
20210076120
2021-03-11

Display system having an audio output device

#29
20200304139
2020-09-24

Analog-to-digital converter with dynamic range enhancer

#30
20200296512
2020-09-17

SPEAKER DRIVING DEVICE AND NON-TRANSITORY COMPUTER-READABLE STORAGE MEDIUM

#31
20200287563
2020-09-10

Sigma-delta analog to digital converter

#32
20200233638
2020-07-23

Method for setting parameters for individual adaptation of an audio signal

#33
20200133621
2020-04-30

Capacitive environmental sensing for a unique portable speaker listening experience

#34
20200007983
2020-01-02

System and method for digital signal processing

#35
20190387316
2019-12-19

Separated audio analysis and processing

#36
20190387299
2019-12-19

Display system having an audio output device

#37
20190332512
2019-10-31

Adjusting a playback device

#38
20190306622
2019-10-03

Method for sound effect compensation, non-transitory computer-readable storage medium, and terminal device

#39
20190285673
2019-09-19

Spectral-dynamics of an audio signal

#40
20190253796
2019-08-15

Audio feedback reduction utilizing adaptive filters and nonlinear processing

#41
20190222932
2019-07-18

Method and apparatus for setting filter frequency response

#42
20190065138
2019-02-28

Electronic device with embedded microchip

#43
20190058946
2019-02-21

Speaker driving device

#44
20190051273
2019-02-14

Modular musical instrument amplification system with selectable input gain stage response behavior

#45
20190037311
2019-01-31

Audio preferences for media content players

#46
20190004767
2019-01-03

Method of calibrating audio output device with playback of adjusted audio

#47
20180342232
2018-11-29

ELECTRONIC SIGNAL PROCESSOR

#48
20180287580
2018-10-04

Amplification adjustment in communication devices

#49
20180262174
2018-09-13

Sound signal detection device

#50
20180255396
2018-09-06

System and method for digital signal processing

#51
20180242072
2018-08-23

Headphones with multiple equalization presets for different genres of music

#52
20180234280
2018-08-16

Extremely precise frequency estimation apparatus and method for single receiver

#53
20180234068
2018-08-16

Audio processing apparatus and method for previewing parameter

#54
20180181365
2018-06-28

Control for vehicle sound output

#55
20180139537
2018-05-17

Separated audio analysis and processing

#56
20180097495
2018-04-05

Personalized adjustment of an audio device

#57
20180054331
2018-02-22

Frequency characteristic adjusting circuit, optical transmitter, and optical transceiver

#58
20180035225
2018-02-01

Measurement system and measurement method

#59
20170366151
2017-12-21

Signal processor using multiple frequency bands

#60
20170353252
2017-12-07

Single knob pre-amplifier gain-trim and fader

#61
20170353251
2017-12-07

Broadcast receiver with two units for switching over between different transmission technologies

#62
20170353170
2017-12-07

Intelligent method and apparatus for spectral expansion of an input signal

#63
20170344450
2017-11-30

Adjusting a playback device

#64
20170264982
2017-09-14

Portable guitar amplifier

#65
20170126194
2017-05-04

Spectral correction of audio signals

#66
20170126193
2017-05-04

Electronic device capable of adjusting an equalizer according to physiological condition of hearing and adjustment method thereof

#67
20170078823
2017-03-16

Audio program playback calibration based on content creation environment

#68
20170078794
2017-03-16

System and method for digital signal processing

#69
20170077888
2017-03-16

Loudness matching

#70
20170026016
2017-01-26

Equalization contouring by a control curve

#71
20170026015
2017-01-26

Loudness matching

#72
20160335043
2016-11-17

Methods and apparatus for improving understandability of audio corresponding to dictation

#73
20160277855
2016-09-22

System and method for improved audio perception

#74
20160276994
2016-09-22

ACOUSTIC ADJUSTMENT DEVICE AND ACOUSTIC ADJUSTMENT METHOD

#75
20160259619
2016-09-08

Sound reproduction device including auditory scenario simulation

#76
20160203811
2016-07-14

System and method for transitioning between audio system modes

#77
20160126915
2016-05-05

Filter coefficient group computation device and filter coefficient group computation method

#78
20160111073
2016-04-21

Electronic signal processor

#79
20160065159
2016-03-03

Sound-effect setting method and electronic device

#80
20160036402
2016-02-04

System and method for digital signal processing in deep diving environment

#81
20160020744
2016-01-21

Personalized adjustment of an audio device

#82
20150263871
2015-09-17

Signal processing apparatus and method

#83
20150195631
2015-07-09

Feedback enclosure and feedback system for a transducer of an electronic device

#84
20150169280
2015-06-18

Sound effect adjusting apparatus, method, and program

#85
20150110289
2015-04-23

System and method for digital signal processing

#86
20150106711
2015-04-16

Method and apparatus for providing a visual user interface for audio equalization

#87
20150081072
2015-03-19

Adjusting a playback device

#88
20140290468
2014-10-02

Electronic signal processor

#89
20140253249
2014-09-11

Circuit for providing a flat gain response over a selected frequency range and method of use

#90
20140216448
2014-08-07

Respirator mask speech enhancement apparatus and method

#91
20140205111
2014-07-24

Sound processing apparatus, method, and program

#92
20140153745
2014-06-05

Equalizer

#93
20140079243
2014-03-20

Sound reproduction device including auditory scenario simulation

#94
20140003627
2014-01-02

Operator adjustable full-bandwidth audio spectral shifting control with a simple listener interface

#95
20130308793
2013-11-21

Device for adding harmonics to sound signal

#96
20130272541
2013-10-17

Mobile communication device capable of setting tone color and method of setting tone color

#97
20130208935
2013-08-15

Network for bone conduction transducers

#98
20130201398
2013-08-08

MIXER AND MULTICHANNEL AUDIO INTERFACE FOR A TABLET COMPUTER

#99
20130188804
2013-07-25

Earbuds and earphones for personal sound system

#100
20130177170
2013-07-11

Intelligent method and apparatus for spectral expansion of an input signal

#101
20130034249
2013-02-07

SOLID STATE AUDIO POWER AMPLIFIER

#102
20120308042
2012-12-06

Subwoofer Volume Level Control

#103
20120192702
2012-08-02

Electronic signal processor

#104
20120109348
2012-05-03

CROSS FADER UNIT, MIXER AND PROGRAM

#105
20120096125
2012-04-19

Method and apparatus for adjusting a speaker system

#106
20120063616
2012-03-15

Dynamic compensation of audio signals for improved perceived spectral imbalances

#107
20120027227
2012-02-02

Personalized adjustment of an audio device

#108
20110158428
2011-06-30

SOUND DISTORTION SUPPRESSION CONTROL METHOD AND ACOUSTIC CONTROL APPARATUS USING THE METHOD

#109
20110043279
2011-02-24

Electronic volume circuit

#110
20110019828
2011-01-27

Apparatus and method for sound enhancer

#111
20100172513
2010-07-08

Electronic signal processor

#112
20100128902
2010-05-27

Combination equalizer and calibrator circuit assembly for audio system

#113
20100067716
2010-03-18

Signal processing device, signal processing method, and sound emitting system

#114
20100020988
2010-01-28

Individual audio receiver programmer

#115
20090074207
2009-03-19

Mobile communication device capable of setting tone color and method of setting tone color

#116
20090060019
2009-03-05

Equalizer system and filtering method

#117
20090051664
2009-02-26

METHOD OF SETTING AUDIO SIGNAL AND AUDIO APPARATUS TO USE THE SAME

#118
20080310654
2008-12-18

Circuit for processing sound signals

#119
20080298604
2008-12-04

In-room acoustic magnitude response smoothing via summation of correction signals

#120
20080292113
2008-11-27

Method and apparatus for audio path filter tuning

#121
20080285766
2008-11-20

Electronic signal processor

#122
20080285765
2008-11-20

Electronic signal processor

#123
20080284521
2008-11-20

Electronic signal processor

#124
20080181434
2008-07-31

HEADPHONE PROVIDING TONE ADJUSTING FUNCTION

#125
20080130928
2008-06-05

Hearing apparatus with unsymmetrical tone balance unit and corresponding control method

#126
20080118085
2008-05-22

Sound signal equalizer for adjusting gain at different frequency bands

#127
20080069385
2008-03-20

Amplifier and Method of Amplification

#128
20080013753
2008-01-17

ENVIRONMENTALLY CONTROLLED FREQUENCY RESPONSE MODIFICATION FOR LONG RANGE HAILING SYSTEM

#129
20080007332
2008-01-10

Multiband dynamic range control graphical interface

#130
20070253577
2007-11-01

Equalizer bank with interference reduction

#131
20070217619
2007-09-20

ADJUSTABLE SPEAKER SYSTEMS AND METHODS

#132
20060291670
2006-12-28

Speaker equalization tool

#133
20060280051
2006-12-14

Handheld audio player with equalizer

#134
20060204021
2006-09-14

Controller of graphic equalizer

#135
20060114979
2006-06-01

Fully parametric equalizer

#136
20060062395
2006-03-23

Acoustic correction apparatus

#137
20050254564
2005-11-17

Graphic equalizers

#138
20050213779
2005-09-29

Methods and apparatus for audio signal equalization

#139
20050078838
2005-04-14

Hearing adjustment appliance for electronic audio equipment

#140
20050069153
2005-03-31

Adjustable speaker systems and methods

#141
20050060049
2005-03-17

Low distortion audio equalizer

#142
17475550
2023-12-19

Multi-channel volume level equalization based on user preferences

#143
17319084
2022-07-12

Method for dynamically adjusting weighting values to equalize input signal to generate equalizer output signal and associated parametric equalizer

#144
15942148
2018-10-30

Audio feedback reduction utilizing adaptive filters and nonlinear processing

#145
15414418
2017-08-29

Instrument interconnect system

#146
15371463
2018-01-23

External amplifier interface

#147
14197902
2019-03-05

Application controlled variable audio ear plugs

#148
12463898
2016-04-19

Bass enhancement