ClassID:

220303

H03G9/025 - CPC Classification

Classification description:

Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers frequency-dependent volume compression or expansion, e.g. multiple-band systems

Recent Application in this class:
#1
20250265031
2025-08-21

SYSTEMS AND METHODS OF DISTRIBUTING AUDIO TO ONE OR MORE PLAYBACK DEVICES

#2
20250244946
2025-07-31

DYNAMIC RANGE CONTROL FOR A WIDE VARIETY OF PLAYBACK ENVIRONMENTS

#3
20250047254
2025-02-06

AUDIO PROCESSING DEVICE, SYSTEM, USE AND METHOD IN WHICH ONE OF A PLURALITY OF CODING SCHEMES FOR DISTRIBUTING PULSES TO AN ELECTRODE ARRAY IS SELECTED BASED ON CHARACTERISTICS OF INCOMING SOUND

#4
20240179464
2024-05-30

Audio signal limiter

#5
20240168706
2024-05-23

Dynamic range control for a wide variety of playback environments

#6
20240062770
2024-02-22

ENHANCED DE-ESSER FOR IN-CAR COMMUNICATIONS SYSTEMS

#7
20240028293
2024-01-25

Systems and methods of distributing audio to one or more playback devices

#8
20230353113
2023-11-02

Systems and methods of volume limiting

#9
20230276185
2023-08-31

SPEAKER DISTORTION COMPENSATION DEVICE AND SPEAKER UNIT

#10
20230231526
2023-07-20

MULTICHANNEL AUDIO ENHANCEMENT, DECODING, AND RENDERING IN RESPONSE TO FEEDBACK

#11
20230198488
2023-06-22

Method and unit for performing dynamic range control

#12
20230176810
2023-06-08

Systems and methods of distributing audio to one or more playback devices

#13
20230170866
2023-06-01

Multi-band limiter system and method for avoiding clipping distortion of active speaker

#14
20230113561
2023-04-13

Loudness equalization system

#15
20230075445
2023-03-09

Dynamic range control for a wide variety of playback environments

#16
20230044872
2023-02-09

Multiband limiter modes and noise compensation methods

#17
20230044546
2023-02-09

Multiband limiter modes and noise compensation methods

#18
20230037824
2023-02-09

Methods for reducing error in environmental noise compensation systems

#19
20230026347
2023-01-26

Methods for reducing error in environmental noise compensation systems

#20
20220406326
2022-12-22

Content and environmentally aware environmental noise compensation

#21
20220376668
2022-11-24

Audio system with compressor sidechain frequency-biasing filter for switched-mode power supply overboost energy utilization

#22
20220376667
2022-11-24

Method for dynamically adjusting adjustable gain value to equalize input signal to generate equalizer output signal and associated leveling equalizer

#23
20220345101
2022-10-27

Method of operating an ear level audio system and an ear level audio system

#24
20220236943
2022-07-28

Systems and methods of distributing audio to one or more playback devices

#25
20220225028
2022-07-14

Audio signal limiter

#26
20220212020
2022-07-07

Variable sound system for audio devices

#27
20220149800
2022-05-12

Audio processing device, system, use and method in which one of a plurality of coding schemes for distributing pulses to an electrode array is selected based on characteristics of incoming sound

#28
20210337310
2021-10-28

System and method for digital signal processing

#29
20210318848
2021-10-14

Dynamic range control for a wide variety of playback environments

#30
20210273623
2021-09-02

Audio enhancement in response to compression feedback

#31
20210265966
2021-08-26

Multichannel audio enhancement, decoding, and rendering in response to feedback

#32
20210257983
2021-08-19

System and method for digital signal processing

#33
20210234524
2021-07-29

Systems and methods for identifying and remediating sound masking

#34
20210211802
2021-07-08

Loudspeaker excursion protection

#35
20210194449
2021-06-24

Method to process an audio signal with a dynamic compressive system

#36
20210152937
2021-05-20

System and method for digital signal processing

#37
20210142811
2021-05-13

Multi-band noise gate

#38
20210111686
2021-04-15

Method for generating audio loudness metadata and device therefor

#39
20210092521
2021-03-25

Limiter for bass enhancement

#40
20210085991
2021-03-25

Variable sound system for audio devices

#41
20210076132
2021-03-11

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

#42
20210067122
2021-03-04

Systems and methods of volume limiting

#43
20210021247
2021-01-21

Methods and apparatus for adjusting a level of an audio signal

#44
20200403592
2020-12-24

Systems and methods for identifying and remediating sound masking

#45
20200357422
2020-11-12

DECODING OF ENCODED AUDIO BITSTREAM WITH METADATA CONTAINER LOCATED IN RESERVED DATA SPACE

#46
20200293272
2020-09-17

Dynamic range control for a wide variety of playback environments

#47
20200258538
2020-08-13

Method and electronic device for formant attenuation/amplification

#48
20200244242
2020-07-30

System and method for digital signal processing

#49
20200204136
2020-06-25

Audio processing device, system, use and method in which one of a plurality of coding schemes for distributing pulses to an electrode array is selected based on characteristics of incoming sound

#50
20200186115
2020-06-11

Noise estimation using coherence

#51
20200176011
2020-06-04

Distortion sensing, prevention, and distortion-aware bass enhancement

#52
20200174743
2020-06-04

Systems and methods of distributing audio to one or more playback devices

#53
20200118581
2020-04-16

Distortion sensing, prevention, and distortion-aware bass enhancement

#54
20200099355
2020-03-26

Signal processing device, method and speaker

#55
20200067473
2020-02-27

Methods and apparatus for adjusting a level of an audio signal

#56
20200066286
2020-02-27

Algorithm-based audio optimization method, intelligent terminal and storage device

#57
20200009395
2020-01-09

Variable sound system for audio devices

#58
20200007983
2020-01-02

System and method for digital signal processing

#59
20190392850
2019-12-26

Systems and methods for processing an audio signal for replay on an audio device

#60
20190373359
2019-12-05

Hearing device with acoustic shock control and method for acoustic shock control in a hearing device

#61
20190362735
2019-11-28

Automatic correction of loudness level in audio signals containing speech signals

#62
20190341898
2019-11-07

Systems and methods for identifying and remediating sound masking

#63
20190317724
2019-10-17

Systems and methods of distributing audio to one or more playback devices

#64
20190310822
2019-10-10

Dynamic range control for a wide variety of playback environments

#65
20190306624
2019-10-03

Processing of an audio input signal

#66
20190305743
2019-10-03

Systems and methods of volume limiting

#67
20190305742
2019-10-03

System for configuration and status reporting of audio processing in TV sets

#68
20190267959
2019-08-29

Loudness-based audio-signal compensation

#69
20190255342
2019-08-22

Variable sound system for audio devices

#70
20190229693
2019-07-25

System and method for digital signal processing

#71
20190207578
2019-07-04

Signal channel expanding system based on PAD

#72
20190200141
2019-06-27

Adaptive level estimator, a hearing device, a method and a binaural hearing system

#73
20190199309
2019-06-27

Techniques for distortion reducing multi-band compressor with timbre preservation

#74
20190181823
2019-06-13

Audio processing device, system, and method in which frequency bands of an input audio signal are bundled and allocated to channels for processing

#75
20190158052
2019-05-23

Systems and methods for identifying and remediating sound masking

#76
20190156855
2019-05-23

Enhanced de-esser for in-car communication systems

#77
20190131951
2019-05-02

Sound processing method

#78
20190131950
2019-05-02

Noise estimation using coherence

#79
20190115896
2019-04-18

Methods and apparatus for adjusting a level of an audio signal

#80
20190115895
2019-04-18

Methods and apparatus for adjusting a level of an audio signal

#81
20190115894
2019-04-18

Methods and apparatus for adjusting a level of an audio signal

#82
20190115893
2019-04-18

Methods and apparatus for adjusting a level of an audio signal

#83
20190115892
2019-04-18

Methods and apparatus for adjusting a level of an audio signal

#84
20190115891
2019-04-18

Methods and apparatus for adjusting a level of an audio signal

#85
20190115890
2019-04-18

Methods and apparatus for adjusting a level of an audio signal

#86
20190115889
2019-04-18

Methods and apparatus for adjusting a level of an audio signal

#87
20190115888
2019-04-18

Methods and apparatus for adjusting a level of an audio signal

#88
20190115887
2019-04-18

Methods and apparatus for adjusting a level of an audio signal

#89
20190096416
2019-03-28

Multi-band noise gate

#90
20190065138
2019-02-28

Electronic device with embedded microchip

#91
20190052240
2019-02-14

Method for amplifying audio signal based on its amplitude and electronic device supporting the same

#92
20190037313
2019-01-31

Limiter for bass enhancement

#93
20190036502
2019-01-31

Electronic device and method for adjusting gain of digital audio signal based on hearing recognition characteristics

#94
20190020950
2019-01-17

System and method for digital signal processing

#95
20190018645
2019-01-17

Systems and methods for automatically generating enhanced audio output

#96
20180358945
2018-12-13

Dynamic limiting when driving high capacitive loads

#97
20180278224
2018-09-27

Audio device, speaker device, and audio signal processing method

#98
20180262176
2018-09-13

Audio compressor with parallel equalizer circuit

#99
20180255396
2018-09-06

System and method for digital signal processing

#100
20180248531
2018-08-30

Loudness-based audio-signal compensation

#101
20180242083
2018-08-23

Bass enhancement

#102
20180225084
2018-08-09

Systems and methods of distributing audio to one or more playback devices

#103
20180220242
2018-08-02

Adaptive level estimator, a hearing device, a method and a binaural hearing system

#104
20180211644
2018-07-26

Sound signal processing method and sound signal processing apparatus

#105
20180192229
2018-07-05

Configurable multi-band compressor architecture with advanced surround processing

#106
20180152781
2018-05-31

Audio amplification devices with integrated light elements for enhanced user safety

#107
20180152166
2018-05-31

Techniques for distortion reducing multi-band compressor with timbre preservation

#108
20180151188
2018-05-31

AUDIO ENCODER AND DECODER WITH PROGRAM LOUDNESS AND BOUNDARY METADATA

#109
20180114536
2018-04-26

Distortion sensing, prevention, and distortion-aware bass enhancement

#110
20180108367
2018-04-19

Decoding of encoded audio bitstream with metadata container located in reserved data space

#111
20180102133
2018-04-12

SYSTEM AND METHOD FOR NARROW BANDWIDTH DIGITAL SIGNAL PROCESSING

#112
20180041836
2018-02-08

Signal processing device, signal processing method, and speaker device

#113
20170366904
2017-12-21

Apparatus and method for controlling the dynamic compressor and method for determining amplification values for a dynamic compressor

#114
20170366151
2017-12-21

Signal processor using multiple frequency bands

#115
20170353795
2017-12-07

Loudspeaker nonlinear compensation method and apparatus

#116
20170346460
2017-11-30

Adjusting dynamic range of an audio signal based on one or more dynamic equalization and/or dynamic range control parameters

#117
20170324390
2017-11-09

PORTABLE PROGRAMMABLE DEVICE, SYSTEM, METHOD AND COMPUTER PROGRAM PRODUCT

#118
20170302241
2017-10-19

Management of broadcast audio loudness

#119
20170274215
2017-09-28

Variable sound system for audio devices

#120
20170272859
2017-09-21

Loudspeaker system comprising equalization dependent on volume control

#121
20170223451
2017-08-03

Approach for partially preserving music in the presence of intelligible speech

#122
20170221496
2017-08-03

Decoding of encoded audio bitstream with metadata container located in reserved data space

#123
20170206912
2017-07-20

Audio encoder and decoder with program loudness and boundary metadata

#124
20170201221
2017-07-13

Calculating and adjusting the perceived loudness and/or the perceived spectral balance of an audio signal

#125
20170149401
2017-05-25

EQUALISER, AUDIO SYSTEM WITH SUCH AN EQUALISER AND METHOD OF EQUALISING A SOUND MIX

#126
20170133992
2017-05-11

Loudness-based audio-signal compensation

#127
20170117865
2017-04-27

Multi-band limiter, sound recording apparatus, and program storage medium

#128
20170097805
2017-04-06

Audio-signal processing device, and audio-signal processing method

#129
20170078794
2017-03-16

System and method for digital signal processing

#130
20170026771
2017-01-26

Audio signal processing

#131
20160373878
2016-12-22

Audio filters based on configuration

#132
20160335043
2016-11-17

Methods and apparatus for improving understandability of audio corresponding to dictation

#133
20160322949
2016-11-03

Frequency-domain dynamic range control of signals

#134
20160316303
2016-10-27

Method for frequency-dependent noise suppression of an input signal

#135
20160248393
2016-08-25

Calculating and adjusting the perceived loudness and/or the perceived spectral balance of an audio signal

#136
20160246564
2016-08-25

Techniques for setting volume level within a tree of cascaded volume controls with variating operating delays

#137
20160241215
2016-08-18

Techniques for distortion reducing multi-band compressor with timbre preservation

#138
20160240208
2016-08-18

System and method for narrow bandwidth digital signal processing

#139
20160212560
2016-07-21

System and method for stereo widening

#140
20160212533
2016-07-21

System and method for bass enhancement

#141
20160199643
2016-07-14

Cochlear implant and an operating method thereof

#142
20160192070
2016-06-30

Loudspeaker protection against excessive excursion

#143
20160191007
2016-06-30

Adaptive loudness levelling method for digital audio signals in frequency domain

#144
20160189707
2016-06-30

Speech processing using identified phoneme clases and ambient noise

#145
20160183000
2016-06-23

Bass enhancement system

#146
20160180863
2016-06-23

Intelligent volume control interface

#147
20160173983
2016-06-16

Method of controlling diaphragm excursion of electrodynamic loudspeakers

#148
20160164480
2016-06-09

METHOD, APPARATUS, AND SYSTEM FOR ANALYSIS, EVALUATION, MEASUREMENT AND CONTROL OF AUDIO DYNAMICS PROCESSING

#149
20160072467
2016-03-10

Frequency band compression with dynamic thresholds

#150
20160066114
2016-03-03

Loudness meter and loudness metering method

#151
20160065161
2016-03-03

Frequency domain multiband dynamics compressor with spectral balance compensation

#152
20160014512
2016-01-14

Playback device calibration user interfaces

#153
20160005420
2016-01-07

Voice emphasis device

#154
20150372653
2015-12-24

Level adjusting circuit, digital sound processor, audio AMP integrated circuit, electronic apparatus and method of automatically adjusting level of audio signal

#155
20150358730
2015-12-10

Approach for partially preserving music in the presence of intelligible speech

#156
20150325243
2015-11-12

Audio encoder and decoder with program loudness and boundary metadata

#157
20150312671
2015-10-29

Passive acoustical filters with filled expansion chamber

#158
20150280678
2015-10-01

Method and apparatus for identifying audio accessory through two pin connection in a two way radio

#159
20150270819
2015-09-24

Techniques for distortion reducing multi-band compressor with timbre preservation

#160
20150264482
2015-09-17

Multiband audio compression system and method

#161
20150256140
2015-09-10

Variable sound system for medical devices

#162
20150229286
2015-08-13

Processing audio signal to produce enhanced audio signal

#163
20150222990
2015-08-06

Loudspeaker system comprising equalization dependent on volume control

#164
20150222119
2015-08-06

System and method for reduction of signal distortion

#165
20150207479
2015-07-23

Dynamic range control with large look-ahead

#166
20150206524
2015-07-23

Passive acoustical filters incorporating inserts that reduce the speed of sound

#167
20150188602
2015-07-02

Dynamic range compressor

#168
20150188588
2015-07-02

Sub-band splitter unit and envelope curves detector provided with a sub-band splitter unit

#169
20150172833
2015-06-18

Separate inner and outer hair cell loss compensation

#170
20150155842
2015-06-04

Method, apparatus, and system for analysis, evaluation, measurement and control of audio dynamics processing

#171
20150125016
2015-05-07

Hearing aid with probabilistic hearing loss compensation

#172
20150110289
2015-04-23

System and method for digital signal processing

#173
20150106083
2015-04-16

Audio signal loudness determination and modification in the frequency domain

#174
20150092973
2015-04-02

System and method for bass enhancement

#175
20150063600
2015-03-05

Audio signal processing apparatus, method, and program

#176
20150063596
2015-03-05

System and method for processing signals to enhance audibility in an MRI environment

#177
20150030181
2015-01-29

Frequency characteristic modification device

#178
20150010168
2015-01-08

Sound producing system and audio amplifying method thereof

#179
20140369521
2014-12-18

System and method for narrow bandwidth digital signal processing

#180
20140341393
2014-11-20

Electronic device and method for reproducing audio signals

#181
20140334642
2014-11-13

Method and apparatus for outputting audio signal, method for controlling volume

#182
20140321669
2014-10-30

Systems, methods, and apparatus to filter audio

#183
20140321668
2014-10-30

Signal processing device

#184
20140301556
2014-10-09

Directional based audio response to an external environment emergency signal

#185
20140219476
2014-08-07

System and method of filtering an audio signal prior to conversion to an MU-LAW format

#186
20140211946
2014-07-31

Loudness modification of multichannel audio signals

#187
20140205106
2014-07-24

Instrument amplification systems incorporating reflection cancelling boundary microphones and multiband compression

#188
20140185829
2014-07-03

In-line signal processor

#189
20140158866
2014-06-12

Amplifier with gain adjustment resistor, feedback resistors and transistors and optical receiver including amplifier

#190
20140140537
2014-05-22

Audio loudness control system

#191
20140140535
2014-05-22

Dynamic speaker management for multichannel audio systems

#192
20140135078
2014-05-15

Dynamic speaker management with echo cancellation

#193
20140133659
2014-05-15

Management of broadcast audio loudness

#194
20140064509
2014-03-06

Computer program product for adaptive audio signal shaping for improved playback in a noisy environment

#195
20140064508
2014-03-06

System for adaptive audio signal shaping for improved playback in a noisy environment

#196
20140064507
2014-03-06

Method for adaptive audio signal shaping for improved playback in a noisy environment

#197
20140044271
2014-02-13

Progressive, targeted, and variable conference feedback tone

#198
20140044270
2014-02-13

Progressive, targeted, and variable conference feedback tone

#199
20140037108
2014-02-06

Automatic loudness control

#200
20140016791
2014-01-16

Loudness control with noise detection and loudness drop detection

#201
20130336502
2013-12-19

Audio reproduction method and apparatus with auto volume control function

#202
20130336494
2013-12-19

AGC circuit for an echo cancelling circuit

#203
20130322651
2013-12-05

Systems, methods, and apparatus for generating an audio signal based on color values of an image

#204
20130279708
2013-10-24

Calculating and adjusting the perceived loudness and/or the perceived spectral balance of an audio signal

#205
20130279707
2013-10-24

Sound reproducing device, reproduced sound adjustment method, acoustic characteristic adjustment device, acoustic characteristic adjustment method, and computer program

#206
20130202131
2013-08-08

Signal processing apparatus, signal processing method, program, signal processing system, and communication terminal

#207
20130195279
2013-08-01

Peak detection when adapting a signal gain based on signal loudness

#208
20130163784
2013-06-27

Bass enhancement system

#209
20130163783
2013-06-27

Systems, methods, and apparatus to filter audio

#210
20130163782
2013-06-27

Sound processing apparatus and sound processing method

#211
20130151261
2013-06-13

Analog signal transfer system, variable compressor, and variable expander

#212
20130136282
2013-05-30

System and Method for Spectral Personalization of Sound

#213
20130136266
2013-05-30

System for dynamic spectral correction of audio signals to compensate for ambient noise

#214
20130102362
2013-04-25

Mobile electronic device and sound control system

#215
20130046546
2013-02-21

Apparatus and method for modifying an input audio signal

#216
20130022207
2013-01-24

Method and system for temperature protection of a speaker

#217
20130013096
2013-01-10

Techniques for distortion reducing multi-band compressor with timbre preservation

#218
20130003989
2013-01-03

Perception enhancement for low-frequency sound components

#219
20120328127
2012-12-27

Volume amplitude limiting device

#220
20120328117
2012-12-27

Control of a loudspeaker output

#221
20120278087
2012-11-01

MULTIBAND COMPRESSOR AND METHOD OF ADJUSTING THE SAME

#222
20120275625
2012-11-01

SIGNAL PROCESSING DEVICE, METHOD THEREOF, PROGRAM, AND DATA RECORDING MEDIUM

#223
20120250893
2012-10-04

Hybrid permanent/reversible dynamic range control system

#224
20120250892
2012-10-04

Signal processor and signal processing method

#225
20120243706
2012-09-27

Method and arrangement for processing of audio signals

#226
20120209616
2012-08-16

Multiband compressor

#227
20120209602
2012-08-16

Method and device for providing a plurality of audio files with consistent loudness levels but different audio characteristics

#228
20120207319
2012-08-16

SOUND SIGNAL OUTPUT APPARATUS AND SOUND SIGNAL OUTPUT METHOD

#229
20120206195
2012-08-16

Automatic gain control circuit and method for automatic gain control

#230
20120191462
2012-07-26

Audio signal processing device with enhancement of low-pitch register of audio signal

#231
20120189131
2012-07-26

LOW-PITCHED SOUND ENHANCEMENT PROCESSING APPARATUS, SPEAKER SYSTEM AND SOUND EFFECTS APPARATUS AND PROCESSES

#232
20120180620
2012-07-19

Tone control apparatus

#233
20120177205
2012-07-12

Hearing aid

#234
20120170769
2012-07-05

Adjusting the loudness of an audio signal with perceived spectral balance preservation

#235
20120163629
2012-06-28

Calculating and adjusting the perceived loudness and/or the perceived spectral balance of an audio signal

#236
20120128178
2012-05-24

Sound reproducing apparatus, sound reproducing method, and recording medium

#237
20120106743
2012-05-03

Loudness modification of multichannel audio signals

#238
20120082330
2012-04-05

METHOD FOR SIGNAL PROCESSING IN A HEARING AID AND HEARING AID

#239
20120063616
2012-03-15

Dynamic compensation of audio signals for improved perceived spectral imbalances

#240
20120051559
2012-03-01

Audio equalizer and methods for use therewith

#241
20120051558
2012-03-01

METHOD AND APPARATUS FOR REPRODUCING AUDIO SIGNAL BY ADAPTIVELY CONTROLLING FILTER COEFFICIENT

#242
20120039490
2012-02-16

Controlling the loudness of an audio signal in response to spectral localization

#243
20120008798
2012-01-12

Method and apparatus for stereo enhancement of an audio system

#244
20120002823
2012-01-05

Acoustic correction apparatus, audio output apparatus, and acoustic correction method

#245
20110320210
2011-12-29

Multiband dynamics compressor with spectral balance compensation

#246
20110320209
2011-12-29

Frequency domain multiband dynamics compressor with automatically adjusting frequency band boundary locations

#247
20110317841
2011-12-29

METHOD AND DEVICE FOR OPTIMIZING AUDIO QUALITY

#248
20110311067
2011-12-22

Digital sound leveling device and method to reduce the risk of noise induced hearing loss

#249
20110311062
2011-12-22

Loudness modification of multichannel audio signals

#250
20110268301
2011-11-03

Hearing aid and a method of detecting and attenuating transients

#251
20110268293
2011-11-03

System and method for processing signals to enhance audibility in an MRI Environment

#252
20110257982
2011-10-20

Audio signal loudness determination and modification in the frequency domain

#253
20110255712
2011-10-20

Audio signal adjustment device and audio signal adjustment method having long and short term gain adjustment

#254
20110249827
2011-10-13

Systems and methods for improving the intelligibility of speech in a noisy environment

#255
20110235824
2011-09-29

System and method for excursion limiting

#256
20110222710
2011-09-15

METHOD AND APPARATUS FOR AUTOMATICALLY REDUCING A VOLUME LEVEL OF AN AUDIO SIGNAL PROVIDED TO A USER

#257
20110200209
2011-08-18

Level adjusting circuit

#258
20110158432
2011-06-30

Audio volume control circuit and method thereof

#259
20110153045
2011-06-23

Audio remastering system

#260
20110137647
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