ClassID:

232235

H04S3/004 - CPC Classification

Classification description:

Systems employing more than two channels, e.g. quadraphonic; Non-adaptive circuits, e.g. manually adjustable or static, for enhancing the sound image or the spatial distribution For headphones

Recent Application in this class:
#1
20260101141
2026-04-09

DIRECTIONAL SOUND RECORDING AND PLAYBACK

#2
20250274711
2025-08-28

COLLIDER SYSTEM FOR THE GENERATION AND REPRODUCTION OF SIGNALS FROM TRISONIC AUDIO WITH ZERO LATENCY

#3
20250193617
2025-06-12

Method and System for Surround Sound Processing in an Audio Device

#4
20250106576
2025-03-27

REVERBERATION GENERATION FOR HEADPHONE VIRTUALIZATION

#5
20250080943
2025-03-06

Generating Binaural Audio in Response to Multi-Channel Audio Using at Least One Feedback Delay Network

#6
20250080933
2025-03-06

Spatial Audio Controller

#7
20240292169
2024-08-29

SYSTEMS AND METHODS FOR HEADSET IDENTIFICATION

#8
20240196133
2024-06-13

Method and System For Headset With Automatic Source Detection And Volume Control

#9
20240171929
2024-05-23

System and method for improved processing of stereo or binaural audio

#10
20240171925
2024-05-23

METHODS AND SYSTEMS FOR ADAPTIVE CONFIGURING OF AUDIO SETTINGS BASED ON PRE-SET MAPPING DATA

#11
20240129687
2024-04-18

Method for processing an audio signal in accordance with a room impulse response, signal processing unit, audio encoder, audio decoder, and binaural renderer

#12
20240107232
2024-03-28

DIRECTIONAL SOUND RECORDING AND PLAYBACK

#13
20240089685
2024-03-14

Personalized three-dimensional audio

#14
20230328469
2023-10-12

Reverberation generation for headphone virtualization

#15
20230283979
2023-09-07

Information processing device, information processing method, and information processing program

#16
20230199427
2023-06-22

Generating binaural audio in response to multi-channel audio using at least one feedback delay network

#17
20230199418
2023-06-22

Sound tracing method and device to improve sound propagation performance

#18
20230156421
2023-05-18

Virtual reality headset audio synchronization system

#19
20230033891
2023-02-02

Method and system for surround sound processing in an audio device

#20
20230028238
2023-01-26

Rendering audio

#21
20220394407
2022-12-08

Spatial audio controller

#22
20220386054
2022-12-01

Spatial audio monauralization via data exchange

#23
20220360933
2022-11-10

Systems and methods for generating video-adapted surround-sound

#24
20220286798
2022-09-08

METHODS AND APPARATUS TO GENERATE BINAURAL SOUNDS FOR HEARING DEVICES

#25
20220240011
2022-07-28

Directional sound recording and playback

#26
20220225055
2022-07-14

Spatial audio augmentation and reproduction

#27
20220182779
2022-06-09

Generating binaural audio in response to multi-channel audio using at least one feedback delay network

#28
20220167105
2022-05-26

Personalized three-dimensional audio

#29
20220159405
2022-05-19

Method for processing an audio signal in accordance with a room impulse response, signal processing unit, audio encoder, audio decoder, and binaural renderer

#30
20220103959
2022-03-31

Reverberation generation for headphone virtualization

#31
20220059105
2022-02-24

Method and apparatus for binaural rendering audio signal using variable order filtering in frequency domain

#32
20220014869
2022-01-13

Method and apparatus for performing binaural rendering of audio signal

#33
20210400418
2021-12-23

Head to headset rotation transform estimation for head pose tracking in spatial audio applications

#34
20210400412
2021-12-23

System and methods for cinematic headphones

#35
20210385607
2021-12-09

Spatial audio augmentation and reproduction

#36
20210385600
2021-12-09

Information processing device, information processing method, and information processing program

#37
20210352425
2021-11-11

Method and apparatus for processing a stereo signal

#38
20210345056
2021-11-04

Audio content format selection

#39
20210320636
2021-10-14

Ambient sound activated device

#40
20210289311
2021-09-16

Method for processing an audio signal in accordance with a room impulse response, signal processing unit, audio encoder, audio decoder, and binaural renderer

#41
20210266669
2021-08-26

Method and system for headset with automatic source detection and volume control

#42
20210105570
2021-04-08

Method and system for surround sound processing in a headset

#43
20210051435
2021-02-18

Generating binaural audio in response to multi-channel audio using at least one feedback delay network

#44
20210006927
2021-01-07

SOUND OUTPUT DEVICE, SOUND GENERATION METHOD, AND PROGRAM

#45
20200389748
2020-12-10

Method for live public address, in a helmet, taking into account the auditory perception characteristics of the listener

#46
20200367003
2020-11-19

Reverberation generation for headphone virtualization

#47
20200335115
2020-10-22

Encoding of a multi-channel audio signal to generate binaural signal and decoding of an encoded binauralsignal

#48
20200322750
2020-10-08

Method for processing an audio signal in accordance with a room impulse response, signal processing unit, audio encoder, audio decoder, and binaural renderer

#49
20200275226
2020-08-27

Method and system for surround sound processing in a headset

#50
20200266789
2020-08-20

Ambient sound activated device

#51
20200252721
2020-08-06

Directional sound recording and playback

#52
20200245094
2020-07-30

Generating binaural audio in response to multi-channel audio using at least one feedback delay network

#53
20200152211
2020-05-14

Method and apparatus for binaural rendering audio signal using variable order filtering in frequency domain

#54
20200068331
2020-02-27

Methods and systems for adaptive configuring audio settings based on pre-set mapping data

#55
20200036354
2020-01-30

Ambient sound activated device

#56
20190394583
2019-12-26

METHOD OF AUDIO REPRODUCTION IN A HEARING DEVICE AND HEARING DEVICE

#57
20190387353
2019-12-19

Method for processing an audio signal in accordance with a room impulse response, signal processing unit, audio encoder, audio decoder, and binaural renderer

#58
20190373368
2019-12-05

Filter generation device and filter generation method

#59
20190342694
2019-11-07

Headtracking for parametric binaural output system and method

#60
20190342685
2019-11-07

Reverberation generation for headphone virtualization

#61
20190313198
2019-10-10

Audio content format selection

#62
20190297421
2019-09-26

Head-mounted display system with a surround sound system

#63
20190239012
2019-08-01

Endpoint mixing product

#64
20190215629
2019-07-11

Method and system for surround sound processing in a headset

#65
20190208346
2019-07-04

METHOD FOR PROCESSING AN AUDIO SIGNAL FOR IMPROVED RESTITUTION

#66
20190139530
2019-05-09

Audio scene apparatus

#67
20190124448
2019-04-25

Method and system for headset with automatic source detection and volume control

#68
20190122676
2019-04-25

Method for generating filter for audio signal and parameterizing device therefor

#69
20190116440
2019-04-18

Rendering for computer-mediated reality systems

#70
20190110148
2019-04-11

Spatial relation coding of higher order ambisonic coefficients

#71
20190110147
2019-04-11

Spatial relation coding using virtual higher order ambisonic coefficients

#72
20190052989
2019-02-14

Reverberation generation for headphone virtualization

#73
20190037334
2019-01-31

Methods and systems for providing virtual surround sound on headphones

#74
20190020963
2019-01-17

Synthesis of signals for immersive audio playback

#75
20180367937
2018-12-20

Sound output device, sound generation method, and program

#76
20180359596
2018-12-13

Headtracking for parametric binaural output system and method

#77
20180343535
2018-11-29

Filter generation device, filter generation method, and sound localization method

#78
20180213341
2018-07-26

Method for processing VR audio and corresponding equipment

#79
20180199145
2018-07-12

Device and method for processing a signal in the frequency domain

#80
20180167733
2018-06-14

Headphones and method for producing headphones

#81
20180151185
2018-05-31

Encoding of multi-channel audio signal to generate encoded binaural signal, and associated decoding of encoded binaural signal

#82
20180035233
2018-02-01

Reverberation generation for headphone virtualization

#83
20180035232
2018-02-01

Appliance for receiving and reading audio signals and live sound system

#84
20170339504
2017-11-23

Impedance matching filters and equalization for headphone surround rendering

#85
20170325041
2017-11-09

Method and system for surround sound processing in a headset

#86
20170238096
2017-08-17

Audio playback device

#87
20170048641
2017-02-16

Device and method for processing a signal in the frequency domain

#88
20170034624
2017-02-02

Pre-processing of a channelized music signal

#89
20170026751
2017-01-26

Acoustic output device

#90
20170006400
2017-01-05

Matrixed audio settings

#91
20160345116
2016-11-24

Generating binaural audio in response to multi-channel audio using at least one feedback delay network

#92
20160317928
2016-11-03

Audio headset system and apparatus

#93
20160284335
2016-09-29

Active noise-cancellation feedback signal transmission

#94
20160277865
2016-09-22

Method and apparatus for binaural rendering audio signal using variable order filtering in frequency domain

#95
20160275956
2016-09-22

Method for generating filter for audio signal and parameterizing device therefor

#96
20160249151
2016-08-25

Method and mobile device for processing an audio signal

#97
20160241986
2016-08-18

Virtual stereo synthesis method and apparatus

#98
20160192074
2016-06-30

Method and system for headset with automatic source detection and volume control

#99
20160142854
2016-05-19

Method for processing an audio signal in accordance with a room impulse response, signal processing unit, audio encoder, audio decoder, and binaural renderer

#100
20160142848
2016-05-19

Determination of head-related transfer function data from user vocalization perception

#101
20160125867
2016-05-05

Audio scene apparatus

#102
20160066116
2016-03-03

Using single bitstream to produce tailored audio device mixes

#103
20150249898
2015-09-03

Bionic hearing headset

#104
20150228286
2015-08-13

Processing audio objects in principal and supplementary encoded audio signals

#105
20150213807
2015-07-30

Audio encoding and decoding

#106
20150098597
2015-04-09

Method and system for surround sound processing in a headset

#107
20150016614
2015-01-15

Pre-processing of a channelized music signal

#108
20140358567
2014-12-04

Spatial audio rendering and encoding

#109
20140355796
2014-12-04

Filtering with binaural room impulse responses

#110
20140355795
2014-12-04

Filtering with binaural room impulse responses with content analysis and weighting

#111
20140355794
2014-12-04

Binaural rendering of spherical harmonic coefficients

#112
20140350944
2014-11-27

Encoding and reproduction of three dimensional audio soundtracks

#113
20140334650
2014-11-13

Methods and devices for reproducing surround audio signals

#114
20140270185
2014-09-18

System and methods for processing stereo audio content

#115
20140219457
2014-08-07

Method for processing an audio signal, audio playback system, and processing unit for processing audio signals

#116
20140185844
2014-07-03

Method for processing an audio signal for improved restitution

#117
20140185811
2014-07-03

System and method for variable decorrelation of audio signals

#118
20140153765
2014-06-05

Listening device and accompanying signal processing method

#119
20140086414
2014-03-27

Efficient audio coding having reduced bit rate for ambient signals and decoding using same

#120
20140073429
2014-03-13

Audio headset system and apparatus

#121
20130287235
2013-10-31

Head-related transfer function convolution method and head-related transfer function convolution device

#122
20130272527
2013-10-17

Audio system and method of operation therefor

#123
20130243200
2013-09-19

Parametric binaural headphone rendering

#124
20130089209
2013-04-11

Audio-signal processing device, audio-signal processing method, program, and recording medium

#125
20130077800
2013-03-28

Tunable multichannel headphone and method for assembling the same

#126
20130064374
2013-03-14

Signal processing apparatus and method for providing 3D sound effect

#127
20130003998
2013-01-03

Modifying Spatial Image of a Plurality of Audio Signals

#128
20120177213
2012-07-12

Feedback microphones encoder modulators, signal generators, mixers, amplifiers, summing nodes

#129
20120063619
2012-03-15

HEADPHONE IMPROVEMENTS

#130
20120020481
2012-01-26

Sound reproduction apparatus and sound reproduction method

#131
20120008789
2012-01-12

3D sound reproducing method and apparatus

#132
20110301729
2011-12-08

Sound system and a method for providing sound

#133
20110264456
2011-10-27

Binaural rendering of a multi-channel audio signal

#134
20110211702
2011-09-01

Signal generation for binaural signals

#135
20110188662
2011-08-04

METHOD OF RENDERING BINAURAL STEREO IN A HEARING AID SYSTEM AND A HEARING AID SYSTEM

#136
20110153043
2011-06-23

Methods, apparatuses and computer program products for facilitating efficient browsing and selection of media content and lowering computational load for processing audio data

#137
20110135098
2011-06-09

Methods and devices for reproducing surround audio signals

#138
20110116651
2011-05-19

Distributed sound enhancement

#139
20110116649
2011-05-19

Distributed sound enhancement

#140
20110116620
2011-05-19

Distributed sound enhancement

#141
20110060436
2011-03-10

BINAURAL AUDIO AND PROCESSING OF AUDIO SIGNALS

#142
20100329466
2010-12-30

Device and method for converting spatial audio signal

#143
20100290636
2010-11-18

Method and apparatus for enhancing the generation of three-dimensional sound in headphone devices

#144
20100246864
2010-09-30

HEADPHONE IMPROVEMENTS

#145
20100232609
2010-09-16

Device, method, program, and system for canceling crosstalk when reproducing sound through plurality of speakers arranged around listener

#146
20100226500
2010-09-09

Audio signal processing

#147
20090292544
2009-11-26

Binaural spatialization of compression-encoded sound data utilizing phase shift and delay applied to each subband

#148
20090214045
2009-08-27

Head-related transfer function convolution method and head-related transfer function convolution device

#149
20090141905
2009-06-04

NAVIGABLE AUDIO-BASED VIRTUAL ENVIRONMENT

#150
20090129601
2009-05-21

Controlling the decoding of binaural audio signals

#151
20090110220
2009-04-30

Method for processing a multi-channel audio signal for a binaural hearing apparatus and a corresponding hearing apparatus

#152
20090103738
2009-04-23

Method for binaural synthesis taking into account a room effect

#153
20090060248
2009-03-05

Earphone structure with a composite sound field

#154
20090060238
2009-03-05

Earphone structure with a composite sound field

#155
20090060219
2009-03-05

Audio signal transmitting apparatus, audio signal receiving apparatus, audio signal transmission system, audio signal transmission method, and program

#156
20090043591
2009-02-12

Audio encoding and decoding to generate binaural virtual spatial signals

#157
20080273708
2008-11-06

Early Reflection Method for Enhanced Externalization

#158
20080205675
2008-08-28

Stereophonic sound output apparatus and early reflection generation method thereof

#159
20080205658
2008-08-28

Audio coding

#160
20080165949
2008-07-10

Multi-mode, multi-channel psychoacoustic processing for emergency communications

#161
20080123879
2008-05-29

Digital wireless stereophonic music transmission device

#162
20080114606
2008-05-15

Time scaling of multi-channel audio signals

#163
20080037795
2008-02-14

Method, medium, and system decoding compressed multi-channel signals into 2-channel binaural signals

#164
20080033729
2008-02-07

Method, medium, and apparatus decoding an input signal including compressed multi-channel signals as a mono or stereo signal into 2-channel binaural signals

#165
20070297616
2007-12-27

Device and method for generating an encoded stereo signal of an audio piece or audio datastream

#166
20070230725
2007-10-04

Audio signal processing

#167
20070223751
2007-09-27

Utilization of filtering effects in stereo headphone devices to enhance spatialization of source around a listener

#168
20070223708
2007-09-27

Generation of spatial downmixes from parametric representations of multi channel signals

#169
20070172086
2007-07-26

Utilization of filtering effects in stereo headphone devices to enhance spatialization of source around a listener

#170
20070160219
2007-07-12

Decoding of binaural audio signals

#171
20070160218
2007-07-12

Decoding of binaural audio signals

#172
20060287745
2006-12-21

Wireless speakers

#173
20060198527
2006-09-07

Method and apparatus to generate stereo sound for two-channel headphones

#174
20060147028
2006-07-06

Multi-mode, multi-channel psychoacoustic processing for emergency communications

#175
20060083393
2006-04-20

Multiple channel wireless communication system

#176
20060050908
2006-03-09

Personalized surround sound headphone system

#177
20060050890
2006-03-09

Method and apparatus for producing a phantom three-dimensional sound space with recorded sound

#178
20060045294
2006-03-02

Personalized headphone virtualization

#179
20060013418
2006-01-19

5.1 channel digital surround earphone

#180
20060009986
2006-01-12

Signal processing apparatus

#181
20050286713
2005-12-29

Distributed sound enhancement

#182
20050276430
2005-12-15

Fast headphone virtualization

#183
20050271218
2005-12-08

Palm type dolby decoding earphone device

#184
20050207606
2005-09-22

[Earphone structure with a composite sound field ]

#185
20050185810
2005-08-25

Audio processing apparatus

#186
20050180579
2005-08-18

Late reverberation-based synthesis of auditory scenes

#187
20050089174
2005-04-28

Stereophonic device for headphones and audio signal processing program

#188
20050053245
2005-03-10

5.1 Channel signal output mixer circuit for earphone

#189
18503816
2024-12-24

Spatial audio controller

#190
18099950
2024-02-27

System and method for reducing noise in binaural or stereo audio

#191
17336583
2023-02-21

System and method for realistic rotation of stereo or binaural audio

#192
16044418
2019-07-23

Ambient sound activated headphone

#193
15808474
2019-02-12

Extra-aural headphone device and method

#194
15448563
2019-02-19

Head-mounted display system with a surround sound system