ClassID:

227811

H04M9/085 - CPC Classification

Classification description:

Arrangements for interconnection not involving centralised switching; Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic using digital techniques

Recent Application in this class:
#1
20250126423
2025-04-17

Sound Localization for an Electronic Call

#2
20250124941
2025-04-17

SYSTEM AND METHOD FOR AUDIO LIMITING IN CALL DOWNLINK ALGORITHM

#3
20250016501
2025-01-09

EXTERNAL NOISE-BASED MICROPHONE AND SENSOR CONTROL METHOD AND ELECTRONIC DEVICE

#4
20240048927
2024-02-08

Sound localization for an electronic call

#5
20240040044
2024-02-01

Detecting and flagging acoustic problems in video conferencing

#6
20230224658
2023-07-13

Head mounted display for an electronic call

#7
20230133061
2023-05-04

Audio device and method for detecting device status of audio device in audio/video conference

#8
20230051413
2023-02-16

VOICE CALL CONTROL METHOD AND APPARATUS, COMPUTER-READABLE MEDIUM, AND ELECTRONIC DEVICE

#9
20220224747
2022-07-14

Signal processing method and signal processing apparatus

#10
20210409548
2021-12-30

SYNTHETIC NONLINEAR ACOUSTIC ECHO CANCELLATION SYSTEMS AND METHODS

#11
20210321005
2021-10-14

METHOD AND TERMINAL FOR ECHO CANCELLATION

#12
20210281686
2021-09-09

Detecting and flagging acoustic problems in video conferencing

#13
20210227342
2021-07-22

Electronic glasses that provide binaural sound

#14
20210160376
2021-05-27

Detecting and flagging acoustic problems in video conferencing

#15
20200336602
2020-10-22

Detection of acoustic echo cancellation

#16
20200260203
2020-08-13

Head mounted display processes sound with HRTFs based on eye distance of a user wearing the HMD

#17
20200245087
2020-07-30

Adjusting ambient sound playing through speakers in headphones

#18
20200005806
2020-01-02

CALL QUALITY IMPROVEMENT SYSTEM, APPARATUS AND METHOD

#19
20190320071
2019-10-17

Intercommunication system with adaptive transmit delay

#20
20190306645
2019-10-03

Smartphone moves location of binaural sound

#21
20190306644
2019-10-03

Controlling a location of binaural sound with a command

#22
20190261119
2019-08-22

Wearable electronic device executes voice command to intelligent personal assistant and moves binaural sound

#23
20190261118
2019-08-22

Headphones execute voice command to intelligent personal assistant and move binaural sound

#24
20190261117
2019-08-22

Headphones execute voice command to move binaural sound

#25
20190261116
2019-08-22

Methods of an intelligent personal assistant moving binaural sound

#26
20190261115
2019-08-22

Headphones that provide binaural sound

#27
20190261114
2019-08-22

Head mounted display that moves binaural sound in response to a voice command

#28
20190261113
2019-08-22

Wearable electronic device selects HRTFs based on eye distance and provides binaural sound

#29
20190261112
2019-08-22

Electronic glasses that provide binaural sound

#30
20190215628
2019-07-11

Headphones that provide binaural sound and receive head gestures

#31
20190149912
2019-05-16

Noise eliminating device, echo cancelling device, and abnormal sound detecting device

#32
20190096421
2019-03-28

FREQUENCY DOMAIN NOISE ATTENUATION UTILIZING TWO TRANSDUCERS

#33
20180115650
2018-04-26

Device for assisting two-way conversation and method for assisting two-way conversation

#34
20180098176
2018-04-05

Telephone call in binaural sound localizing in empty space

#35
20180091925
2018-03-29

Smartphone provides voice as binaural sound during a telephone call

#36
20180084366
2018-03-22

Headphones that externally localize a voice as binaural sound during a telephone cell

#37
20180035238
2018-02-01

Headphones that measure ITD and sound impulse responses to determine user-specific HRTFs for a listener

#38
20180005642
2018-01-04

Audio quality improvement in multimedia systems

#39
20170289330
2017-10-05

Wearable device, wearable device system and method for controlling wearable device

#40
20170155756
2017-06-01

Electronic device and method for controlling voice signal

#41
20170149948
2017-05-25

Wearable device, wearable device system and method for controlling wearable device

#42
20170064087
2017-03-02

Nearend speech detector

#43
20160309042
2016-10-20

Echo cancellation

#44
20160301807
2016-10-13

Audio capture and transmission device having sound attenuation

#45
20160227008
2016-08-04

System and method for adjusting hands-free phone

#46
20160134759
2016-05-12

Pure delay estimation

#47
20160094718
2016-03-31

Detection of acoustic echo cancellation

#48
20160080577
2016-03-17

Moving a sound localization point of a computer program during a voice exchange

#49
20160006880
2016-01-07

Variable step size echo cancellation with accounting for instantaneous interference

#50
20160006879
2016-01-07

Audio capture and render device having a visual display and user interface for use for audio conferencing

#51
20160006480
2016-01-07

Detection of double talk in telecommunications networks

#52
20150327035
2015-11-12

FAR-END CONTEXT DEPENDENT PRE-PROCESSING

#53
20150195648
2015-07-09

Post-filter for handling resonance-induced echo components

#54
20150127332
2015-05-07

SYSTEM AND METHOD OF IMPROVING SIGNAL-TO-NOISE RATIO

#55
20140148224
2014-05-29

Far field noise suppression for telephony devices

#56
20140098950
2014-04-10

Detection and suppression of returned audio at near-end

#57
20130230184
2013-09-05

Echo suppression comprising modeling of late reverberation components

#58
20130217349
2013-08-22

Post filter for spectral domain echo cancellers to handle non-linear echo components

#59
20130191873
2013-07-25

System and method for processing audio signals received by a communication device

#60
20130058464
2013-03-07

Detection of double talk in telecommunications networks

#61
20120224684
2012-09-06

SOFT ATTENUATION OF HIGH-POWER SIGNALS

#62
20120163612
2012-06-28

Communication system

#63
20120069989
2012-03-22

Personal speakerphone device

#64
20110176687
2011-07-21

Apparatus and associated methodology for suppressing an acoustic echo

#65
20110069830
2011-03-24

Detection and suppression of returned audio at near-end

#66
20100272274
2010-10-28

Methods and systems for robust approximations of impulse responses in multichannel audio-communication systems

#67
20100146572
2010-06-10

System and method for processing audio signals received by a communication device

#68
20100054496
2010-03-04

System for elimination of acoustic feedback

#69
20100046768
2010-02-25

System for elimination of acoustic feedback

#70
20090279685
2009-11-12

Detection of double talk in telecommunications networks

#71
20090185674
2009-07-23

Communication system

#72
20090185515
2009-07-23

Communication system

#73
20090067637
2009-03-12

Echo control retrofit

#74
20090022074
2009-01-22

Echo canceller with interference-level controlled step size

#75
20080306736
2008-12-11

Method and system for a subband acoustic echo canceller with integrated voice activity detection

#76
20070237341
2007-10-11

Frequency domain noise attenuation utilizing two transducers

#77
20070165834
2007-07-19

System and method for adjusting hands-free phone

#78
20070093714
2007-04-26

Adaptive coupling equalization in beamforming-based communication systems

#79
17746751
2025-12-23

Method and system for controlling echo cancellation

#80
16365476
2021-11-09

Announcement in a communications session

#81
16354565
2020-01-07

Method and system for acoustic feedback cancellation using a known full band sequence

#82
15922660
2018-12-11

Audio framework extension for acoustic feedback suppression

#83
15901690
2019-05-07

Adaptive proximity thresholds for dynamic howling suppression