ClassID:

232144

H04R2217/03 - CPC Classification

Classification description:

Details of magnetostrictive, piezo-electric, or electrostrictive transducers covered by or but not provided for in any of their subgroups Parametric transducers where sound is generated or captured by the acoustic demodulation of amplitude modulated ultrasonic waves

Recent Application in this class:
#1
20260046550
2026-02-12

Sound Producing Apparatus and Wearable Sound Device

#2
20250247642
2025-07-31

System And Method For Generating An Audio Signal

#3
20250203311
2025-06-19

METHOD AND APPARATUS FOR AN ULTRASONIC EMITTER SYSTEM FLOOR AUDIO UNIT

#4
20250175746
2025-05-29

Air-Pulse Generating Device

#5
20250106565
2025-03-27

Air-pulse generating device with tooth edge patterned slit

#6
20240365071
2024-10-31

ULTRASONIC TRANSDUCER AND PARAMETRIC SPEAKER INCLUDING THE SAME

#7
20240365034
2024-10-31

SPEAKER

#8
20240305932
2024-09-12

ACOUSTIC FEATURE COMPUTING APPARATUS, ACOUSTIC FEATURE COMPUTING METHOD, AND PROGRAM

#9
20240224952
2024-07-11

SELF-CALIBRATING ULTRASONIC REMOVAL OF ECTOPARASITES FROM FISH

#10
20240130334
2024-04-25

Self-calibrating ultrasonic removal of ectoparasites from fish

#11
20240129661
2024-04-18

System and method for generating an audio signal

#12
20240096183
2024-03-21

Algorithm Improvements in a Haptic System

#13
20240089678
2024-03-14

HEARING APPARATUS

#14
20230353943
2023-11-02

Techniques for generating audio signals

#15
20230353933
2023-11-02

SYSTEM AND METHOD FOR GENERATING AN AUDIO SIGNAL

#16
20230308810
2023-09-28

Air-pulse generating device

#17
20230300555
2023-09-21

Method and apparatus for an ultrasonic emitter system floor audio unit

#18
20230300540
2023-09-21

Air-pulse generating device with common mode and differential mode movement

#19
20230292058
2023-09-14

Air-pulse generating device producing asymmetric air pulses

#20
20230274752
2023-08-31

Hearing enhancement methods and systems

#21
20230209277
2023-06-29

Acoustic transducer, acoustic apparatus, and ultrasonic oscillator

#22
20230140015
2023-05-04

DIRECTED SOUND TRANSMISSION SYSTEMS AND METHODS

#23
20230097117
2023-03-30

Audio spot forming device

#24
20230039087
2023-02-09

Self-calibrating ultrasonic removal of ectoparasites from fish

#25
20220415338
2022-12-29

Hearing enhancement methods and systems

#26
20220272440
2022-08-25

System and method for generating an audio signal

#27
20220256291
2022-08-11

Techniques for generating audio signals

#28
20220210578
2022-06-30

AUDIO REPRODUCTION APPARATUS AND AUDIO DEVICE

#29
20220198892
2022-06-23

Algorithm improvements in a haptic system

#30
20220192160
2022-06-23

Self-calibrating ultrasonic removal of ectoparasites from fish

#31
20220182757
2022-06-09

Directed sound transmission systems and methods

#32
20220180072
2022-06-09

Directed sound transmission systems and methods

#33
20220150644
2022-05-12

Amplifiers for parametric loudspeakers

#34
20220139412
2022-05-05

Method and apparatus for directional sound

#35
20220130369
2022-04-28

QUIET FLIGHT DECK COMMUNICATION USING ULTRASONIC PHASED ARRAY

#36
20220116699
2022-04-14

Ultrasonic speaker

#37
20220038839
2022-02-03

Method and apparatus for an ultrasonic emitter system floor audio unit

#38
20220007108
2022-01-06

METHOD FOR IMPROVING SOUND QUALITY OF SUPER-DIRECTIONAL ULTRASONIC SPEAKER DEVICE, AND ULTRASONIC SPEAKER DEVICE HAVING SAME

#39
20210352414
2021-11-11

Ultrasonic transducer

#40
20210306754
2021-09-30

Techniques for generating audio signals

#41
20210287692
2021-09-16

Hearing enhancement methods and systems

#42
20210264894
2021-08-26

Method for generating parametric sound and means for carying out said method

#43
20210241749
2021-08-05

Ultrasonic transducers

#44
20210183215
2021-06-17

Perceptions in a haptic system

#45
20210142817
2021-05-13

Method and apparatus for directional sound

#46
20210084430
2021-03-18

Method and apparatus for an ultrasonic emitter system floor audio unit

#47
20210067865
2021-03-04

System and method for generating an audio signal

#48
20200396546
2020-12-17

Electroacoustic transducer for the parametric generation of ultrasound

#49
20200389746
2020-12-10

Sound reproducing apparatus capable of self diagnostic and self-diagnostic method for a sound reproducing apparatus

#50
20200314557
2020-10-01

Display apparatus and computing apparatus including the same

#51
20200314534
2020-10-01

Sound reproducing apparatus, sound reproducing method, and computer readable storage medium

#52
20200302760
2020-09-24

Algorithm improvements in a haptic system

#53
20200251125
2020-08-06

Causing a voice enabled device to defend against inaudible signal attacks

#54
20200213712
2020-07-02

Sounding device, manufacturing method thereof and display device

#55
20200196084
2020-06-18

LOCALIZED OUTPUTTING OF INFORMATION

#56
20200171540
2020-06-04

Ultrasonic generator, method of manufacturing the same, display panel and screen sound producing system

#57
20200169817
2020-05-28

Ultrasonic transducer

#58
20200154197
2020-05-14

ACOUSTIC PROCESSOR AND ACOUSTIC OUTPUT DEVICE

#59
20200105288
2020-04-02

Method and apparatus for directional sound applicable to vehicles

#60
20200059736
2020-02-20

Amplifiers for parametric loudspeakers

#61
20200052938
2020-02-13

Acoustic secure transmission (AST)

#62
20200045421
2020-02-06

Electronic gaming machine and method with a stereo ultrasound speaker configuration providing binaurally encoded stereo audio

#63
20200029151
2020-01-23

Vertically configured parametric transducer headphones

#64
20200015004
2020-01-09

Ultrasonic wave output apparatus

#65
20190313190
2019-10-10

Sound producing device

#66
20190297448
2019-09-26

Method and apparatus for an ultrasonic emitter system floor audio unit

#67
20190297416
2019-09-26

Ultrasonic wave-based voice signal transmission system and method

#68
20190268689
2019-08-29

Method for operating a piezoelectric speaker

#69
20190261085
2019-08-22

Digital microphones

#70
20190206202
2019-07-04

Perceptions in a haptic system

#71
20190197841
2019-06-27

Algorithm improvements in a haptic system

#72
20190124439
2019-04-25

Speaker device and control method for a speaker device

#73
20190122691
2019-04-25

Causing microphones to detect inaudible sounds and defense against inaudible attacks

#74
20190110133
2019-04-11

Ultrasonic transducer

#75
20190100311
2019-04-04

Multifunction firefighting infrasound, hailstone, plant pollination drone apparatus and method

#76
20190098409
2019-03-28

Directional sound playing system and method

#77
20190081711
2019-03-14

Parametric array system

#78
20190051060
2019-02-14

Functional safety critical audio system for autonomous and industrial applications

#79
20190034155
2019-01-31

Information processing apparatus, information processing method, and program

#80
20180376245
2018-12-27

APPARATUS, SYSTEM AND METHOD FOR UNDERWATER VOICE COMMUNICATION BY A DIVER

#81
20180376243
2018-12-27

Lighting centric indoor location based service with speech-based user interface

#82
20180317038
2018-11-01

Method and apparatus for an ultrasonic emitter system floor audio unit

#83
20180301138
2018-10-18

Ultrasonic transducers

#84
20180295462
2018-10-11

Shoulder-mounted robotic speakers

#85
20180270586
2018-09-20

Amplifiers for parametric loudspeakers

#86
20180206055
2018-07-19

Techniques for generating multiple auditory scenes via highly directional loudspeakers

#87
20180199124
2018-07-12

Transparent touchscreen parametric emitter

#88
20180160203
2018-06-07

Digital loudspeaker

#89
20180139557
2018-05-17

SYSTEM AND METHOD FOR GENERATING SPATIAL SOUND USING ULTRASOUND

#90
20180124498
2018-05-03

Techniques for generating audio signals

#91
20180018988
2018-01-18

Method and apparatus for ultrasonic directional sound applicable to vehicles

#92
20180012589
2018-01-11

System and method for personalized sound isolation in vehicle audio zones

#93
20170289722
2017-10-05

System and method for generating spatial sound using ultrasound

#94
20170289701
2017-10-05

Ultrasonic transducer

#95
20170289684
2017-10-05

Amplifier circuit for a parametric transducer and a related audio device

#96
20170251303
2017-08-31

Digital microphones

#97
20170251302
2017-08-31

Digital microphones

#98
20170245090
2017-08-24

Method and apparatus for an ultrasonic emitter system floor audio unit

#99
20170188157
2017-06-29

Microphone with specific audible area using ultrasound wave

#100
20170144190
2017-05-25

Low-noise ultrasonic wave focusing apparatus

#101
20170064457
2017-03-02

Generation of audio and ultrasonic signals and measuring ultrasonic response in dual-mode MEMS speaker

#102
20170041718
2017-02-09

Unidirectional loudspeaker enclosure

#103
20160381464
2016-12-29

Two port speaker acoustic modulator

#104
20160379018
2016-12-29

Ultrasonic identification devices and methods of making and using same

#105
20160373864
2016-12-22

Transparent parametric transducer and related methods

#106
20160360321
2016-12-08

MEMS-based structure for pico speaker

#107
20160360320
2016-12-08

MEMS-based audio speaker system with modulation element

#108
20160345104
2016-11-24

MEMS-based audio speaker system using single sideband modulation

#109
20160336022
2016-11-17

Privacy-preserving energy-efficient speakers for personal sound

#110
20160286319
2016-09-29

Pico-speaker acoustic modulator

#111
20160277843
2016-09-22

Transducer system

#112
20160269833
2016-09-15

Parametric in-ear impedance matching device

#113
20160269831
2016-09-15

Parametric in-ear impedance matching device

#114
20160255441
2016-09-01

Transparent parametric emitter

#115
20160255440
2016-09-01

Cosmetic Powder Compositions for Delivering Actives

#116
20160249150
2016-08-25

Algorithm improvements in a haptic system

#117
20160246374
2016-08-25

Perceptions in a haptic system

#118
20160241966
2016-08-18

Amplifiers for parametric loudspeakers

#119
20160241720
2016-08-18

Systems and methods for positioning a user of a hands-free intercommunication

#120
20160227329
2016-08-04

Modulation systems and methods for parametric loudspeaker systems

#121
20160219373
2016-07-28

Piezoelectric Speaker Driver

#122
20160214140
2016-07-28

Transducer driver attenuating input current frequency at maximum mechanical output

#123
20160174012
2016-06-16

SYSTEM AND METHOD FOR PROCESSING AN INPUT SIGNAL TO PRODUCE 3D AUDIO EFFECTS

#124
20160134965
2016-05-12

Apparatus, system and method for underwater voice communication by a diver

#125
20160126916
2016-05-05

Adaptive equalization for an ultrasonic audio system

#126
20160088418
2016-03-24

Signal control apparatus

#127
20160049052
2016-02-18

Systems and methods for positioning a user of a hands-free intercommunication system

#128
20160021466
2016-01-21

Ultrasonic transducer

#129
20160021454
2016-01-21

Speaker module, display device having a speaker module, audio adjustment system and control method thereof, and synchronization method for playing multi-language sound

#130
20160014529
2016-01-14

Transparent parametric emitter

#131
20160008852
2016-01-14

Electroacoustic conversion film, electroacoustic converter, flexible display, and projector screen

#132
20150382124
2015-12-31

Directional audio notification

#133
20150304789
2015-10-22

Method and system for generation of sound fields

#134
20150304780
2015-10-22

Electroacoustic transducer, manufacturing method therefor, and electronic device utilizing same

#135
20150304470
2015-10-22

Systems and methods for automatically connecting a user of a hands-free intercommunication system

#136
20150264488
2015-09-17

Electroacoustic transducer, manufacturing method thereof, and electronic device utilizing same

#137
20150258930
2015-09-17

DRIVING SUPPORT APPARATUS AND DRIVING SUPPORT SYSTEM

#138
20150256927
2015-09-10

Self-bias emitter circuit

#139
20150256909
2015-09-10

Parametric transducer with adaptive carrier amplitude

#140
20150248897
2015-09-03

Driving support device

#141
20150245144
2015-08-27

Loudspeaker with piezoelectric elements

#142
20150208166
2015-07-23

Enhanced spatial impression for home audio

#143
20150181361
2015-06-25

Method and apparatus for an ultrasonic emitter system floor audio unit

#144
20150172824
2015-06-18

Wearable communication device

#145
20150139439
2015-05-21

Dynamic location determination for a directionally controllable parametric emitter

#146
20150117657
2015-04-30

Audio speaker with spatially selective sound cancelling

#147
20150110333
2015-04-23

Parametric transducer including visual indicia and related methods

#148
20150109534
2015-04-23

Transparent parametric transducer and related methods

#149
20150104046
2015-04-16

Parametric transducer with graphene conductive surface

#150
20150104026
2015-04-16

Parametric emitter system with noise cancelation

#151
20150098594
2015-04-09

Speaker

#152
20150092974
2015-04-02

Microphone having closed cell foam body

#153
20150092958
2015-04-02

Devices and methods for audible indicators emanating from selected locations

#154
20150092956
2015-04-02

Devices and methods for audible indicators emanating from selected locations

#155
20150071468
2015-03-12

Electrostatic electroacoustic transducer and fabricating methods for the same

#156
20150055811
2015-02-26

Techniques for generating audio signals

#157
20150003624
2015-01-01

Muting device

#158
20140376745
2014-12-25

Hybrid audio delivery system and method therefor

#159
20140376335
2014-12-25

Oscillation device

#160
20140369514
2014-12-18

Portable electronic device directed audio targeted multiple user system and method

#161
20140355765
2014-12-04

Multi-dimensional parametric audio system and method

#162
20140314255
2014-10-23

Acoustic generator

#163
20140270305
2014-09-18

Portable electronic device directed audio system and method

#164
20140269208
2014-09-18

Portable electronic device directed audio targeted user system and method

#165
20140267638
2014-09-18

Display apparatus for visual and audio multiplexed display

#166
20140254840
2014-09-11

Hearing enhancement systems and methods

#167
20140254811
2014-09-11

Sound reproduction device

#168
20140241552
2014-08-28

Sound reproduction device

#169
20140233784
2014-08-21

Parametric transducer and related methods

#170
20140192616
2014-07-10

Electronic device

#171
20140169594
2014-06-19

MEMS component for generating pressure pulses

#172
20140161282
2014-06-12

Substantially planate parametric emitter and associated methods

#173
20140161278
2014-06-12

Sound reproduction device

#174
20140104988
2014-04-17

Parametric transducers and related methods

#175
20140072155
2014-03-13

Personal audio system and method

#176
20140056107
2014-02-27

Parametric system for generating a sound halo, and methods of use thereof

#177
20140044283
2014-02-13

Amplification system, carrier tracking systems and related methods for use in parametric sound systems

#178
20140025007
2014-01-23

Multimaterial thermally drawn piezoelectric fibers

#179
20140023206
2014-01-23

Acoustic apparatus

#180
20140022026
2014-01-23

Oscillator

#181
20140015617
2014-01-16

Oscillator and electronic device

#182
20130315034
2013-11-28

Electronic device

#183
20130314610
2013-11-28

Electronic device

#184
20130307633
2013-11-21

Oscillation device and electronic apparatus

#185
20130294637
2013-11-07

Audio output device

#186
20130267275
2013-10-10

Electronic apparatus with detachable speakers, a body unit and a control unit

#187
20130266151
2013-10-10

Electroacoustic transducer

#188
20130216082
2013-08-22

Electronic device

#189
20130182883
2013-07-18

Sound reproduction device

#190
20130177164
2013-07-11

ULTRASONIC SOUND REPRODUCTION ON EARDRUM

#191
20130121500
2013-05-16

Driving of parametric loudspeakers

#192
20130089218
2013-04-11

Audio equipment and oscillation unit

#193
20130077810
2013-03-28

Apparatus having an acoustic display

#194
20130077803
2013-03-28

Sound reproducing device

#195
20130077443
2013-03-28

Oscillation device and electronic apparatus

#196
20130066636
2013-03-14

Apparatus and method for a wireless extension collar device for altering operational mode of mobile and fixed end-user wireless devices by voice commands

#197
20130064042
2013-03-14

Distance estimation using sound signals

#198
20130064041
2013-03-14

Oscillator and electronic device

#199
20130044904
2013-02-21

Techniques for generating audio signals

#200
20130043769
2013-02-21

Oscillator

#201
20130034246
2013-02-07

Diffracted sound reduction device, diffracted sound reduction method, and filter coefficient determination method

#202
20120328135
2012-12-27

Speaker system and method of operation therefor

#203
20120314872
2012-12-13

SYSTEM AND METHOD FOR PROCESSING AN INPUT SIGNAL TO PRODUCE 3D AUDIO EFFECTS

#204
20120308056
2012-12-06

THREE-DIMENSIONAL SOUND APPARATUS

#205
20120281858
2012-11-08

METHOD AND APPARATUS FOR TRANSMISSION OF SOUND WAVES WITH HIGH LOCALIZATION of SOUND PRODUCTION

#206
20120243708
2012-09-27

Modulation of audio signals in a parametric speaker

#207
20120194328
2012-08-02

VEHICLE APPROACH WARNING APPARATUS

#208
20120180788
2012-07-19

Apparatus, system and method for underwater voice communication by a diver

#209
20120148053
2012-06-14

Directional sound system

#210
20120076306
2012-03-29

Surround sound system and method therefor

#211
20120051556
2012-03-01

Parametric audio system

#212
20120014525
2012-01-19

Method and apparatus for simultaneously controlling near sound field and far sound field

#213
20110182449
2011-07-28

Enclosure-less loudspeaker system

#214
20110182440
2011-07-28

Woofer-less and enclosure-less loudspeaker system

#215
20110170712
2011-07-14

Sound reproducing apparatus for sound reproduction using an ultrasonic transducer via mode-coupled vibration

#216
20110103614
2011-05-05

Hybrid audio delivery system and method therefor

#217
20110033068
2011-02-10

Human body sound transmission apparatus and method for minimizing signal loss

#218
20110026729
2011-02-03

Vehicle existence informing device and method for informing existence of a vehicle

#219
20100238352
2010-09-23

System and method for displaying multiple images/videos on a single display

#220
20100156243
2010-06-24

Ultrasound transducer featuring a pitch independent interposer and method of making the same

#221
20100092005
2010-04-15

Multidirectional multisound information system

#222
20100080409
2010-04-01

Dual-mode loudspeaker

#223
20090298430
2009-12-03

Directional communication systems

#224
20090257606
2009-10-15

Ultrasonic speaker and projector

#225
20090116660
2009-05-07

In-Band Parametric Sound Generation System

#226
20080285777
2008-11-20

Parametric audio system

#227
20080279410
2008-11-13

Hearing enhancement systems

#228
20080212033
2008-09-04

Project equipped with ultrasonic speaker, and method for displaying sound reproduction range in projector

#229
20080191582
2008-08-14

Generating device for generating a useful stream of a medium, in particular for generating sound

#230
20080159571
2008-07-03

Miniature Surround-Sound Loudspeaker

#231
20080093952
2008-04-24

Hypersonic transducer

#232
20080063214
2008-03-13

Modulator processing for a parametric speaker system

#233
20080055548
2008-03-06

Projector and method of controlling ultrasonic speaker in projector

#234
20070296818
2007-12-27

Audio/visual Apparatus With Ultrasound

#235
20070287516
2007-12-13

Directional wireless communication systems

#236
20070286433
2007-12-13

Method for controlling output from ultrasonic speaker and ultrasonic speaker system

#237
20070274546
2007-11-29

Music contents reproducing apparatus

#238
20070274541
2007-11-29

Superdirectional acoustic system and projector

#239
20070242843
2007-10-18

Ultrasonic transducer and ultrasonic speaker using the same

#240
20070236858
2007-10-11

Enhanced method for signal shaping in multi-channel audio reconstruction

#241
20070211574
2007-09-13

Parametric Loudspeaker System And Method For Enabling Isolated Listening To Audio Material

#242
20070189548
2007-08-16

Method of adjusting linear parameters of a parametric ultrasonic signal to reduce non-linearities in decoupled audio output waves and system including same

#243
20070183618
2007-08-09

Moving object equipped with ultra-directional speaker

#244
20070183605
2007-08-09

Method of controlling output of ultrasonic speaker, ultrasonic speaker system, and display device

#245
20070178943
2007-08-02

Circuit board for mobile communication terminal having ultrasonic wave speaker system

#246
20070172076
2007-07-26

Moving object equipped with ultra-directional speaker

#247
20070169555
2007-07-26

DISPLAY UNIT WITH SOUND GENERATION SYSTEM

#248
20070165866
2007-07-19

METHOD AND APPARATUS TO FACILITATE CONVEYING AUDIO CONTENT

#249
20070154036
2007-07-05

Electrostatic ultrasonic transducer drive control method, electrostatic ultrasonic transducer, ultrasonic speaker using the same, audio signal reproduction method, ultra-directional acoustic system, and display device

#250
20070124620
2007-05-31

Capacitive load driving circuit, electrostatic transducer, method of setting circuit constant, ultrasonic speaker, display device, and directional acoustic system

#251
20070121970
2007-05-31

Electrostatic transducer, ultrasonic speaker, driving circuit of capacitive load, method of setting circuit constant, display device, and directional sound system

#252
20070121968
2007-05-31

Ultra directional speaker system and signal processing method thereof

#253
20070071261
2007-03-29

Electrostatic ultrasonic transducer, ultrasonic speaker and display device

#254
20060291667
2006-12-28

Method and device for driving a directional speaker

#255
20060280315
2006-12-14

System and method for delivering audio-visual content along a customer waiting line

#256
20060233404
2006-10-19

Horn array emitter

#257
20060204022
2006-09-14

Sound beam loudspeaker system

#258
20060147065
2006-07-06

Sound reproducing screen for an ultrasonic converting and reproducing method

#259
20060109989
2006-05-25

Sound projector

#260
20060093154
2006-05-04

Ultrasonic based parametric multivalve loudspeaker system

#261
20060082259
2006-04-20

Method and device for ensuring trandsducer bond line thickness

#262
20060072770
2006-04-06

Electrostatic ultrasonic transducer and ultrasonic speaker

#263
20060033882
2006-02-16

Projector

#264
20050286346
2005-12-29

High intensity directional electroacoustic sound generating system for communications targeting

#265
20050281420
2005-12-22

Ultrasonic speaker and projector

#266
20050281413
2005-12-22

Parametric audio system for operation in a saturated air medium

#267
20050248233
2005-11-10

Parametric audio system

#268
20050226438
2005-10-13

Parametric ring emitter

#269
20050220311
2005-10-06

Method and apparatus to generate an audio beam with high quality

#270
20050207590
2005-09-22

Method of reproducing audio sound with ultrasonic loudspeakers

#271
20050207589
2005-09-22

Hypersonic transducer

#272
20050207588
2005-09-22

Focused hypersonic communication

#273
20050207568
2005-09-22

Low echo communicating apparatus and communicating method thereof

#274
20050195985
2005-09-08

Focused parametric array

#275
20050185800
2005-08-25

Parametric sound system with lower sideband

#276
20050149338
2005-07-07

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