ClassID:

197487

G10L2021/02168 - CPC Classification

Classification description:

Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility; Speech enhancement, e.g. noise reduction or echo cancellation; Noise filtering characterised by the method used for estimating noise the estimation exclusively taking place during speech pauses

Recent Application in this class:
#1
20260031090
2026-01-29

System and method for detecting deep fake audio

#2
20250273227
2025-08-28

DEVICE AND METHOD FOR AI-BASED NOISE SUPPRESSION

#3
20240235509
2024-07-11

AUDIO DEVICE WITH MICROPHONE AND MEDIA MIXING

#4
20230317091
2023-10-05

Method and apparatus for determining periods of excessive noise for receiving smart speaker voice commands

#5
20230306981
2023-09-28

Neural-network-based approach for speech denoising

#6
20210241783
2021-08-05

Two-dimensional smoothing of post-filter masks

#7
20210158831
2021-05-27

Method and apparatus for determining periods of excessive noise for receiving smart speaker voice commands

#8
20200302947
2020-09-24

Method and apparatus for determining periods of excessive noise for receiving smart speaker voice commands

#9
20200227073
2020-07-16

Noise cancellation

#10
20190327352
2019-10-24

Estimating averaged noise component in a microphone signal

#11
20190304482
2019-10-03

Infinite impulse response acoustic echo cancellation in the frequency domain

#12
20180336911
2018-11-22

Method of and system for noise suppression

#13
20180293997
2018-10-11

Identification of noise signal for voice denoising device

#14
20180075854
2018-03-15

Method and arrangement for controlling smoothing of stationary background noise

#15
20170330582
2017-11-16

SPATIO-TEMPORAL SPEECH ENHANCEMENT TECHNIQUE BASED ON GENERALIZED EIGENVALUE DECOMPOSITION

#16
20170301364
2017-10-19

Systems, methods, apparatus, and computer-readable media for adaptive formant sharpening in linear prediction coding

#17
20170221501
2017-08-03

Methods and systems for providing consistency in noise reduction during speech and non-speech periods

#18
20170133030
2017-05-11

SPATIO-TEMPORAL SPEECH ENHANCEMENT TECHNIQUE BASED ON GENERALIZED EIGENVALUE DECOMPOSITION

#19
20170092299
2017-03-30

Audio signal processing device, audio signal processing method, and recording medium storing a program

#20
20170092281
2017-03-30

Comfort noise generation apparatus and method

#21
20160379662
2016-12-29

Method, apparatus and server for processing noisy speech

#22
20160155457
2016-06-02

Method and arrangement for controlling smoothing of stationary background noise

#23
20160142815
2016-05-19

Headset with end-firing microphone array and automatic calibration of end-firing array

#24
20160127527
2016-05-05

Controlling operational characteristics of acoustic echo canceller

#25
20160029130
2016-01-28

Method for evaluating a useful signal and audio device

#26
20150088494
2015-03-26

Voice processing apparatus and voice processing method

#27
20140270231
2014-09-18

System and method of mixing accelerometer and microphone signals to improve voice quality in a mobile device

#28
20130041659
2013-02-14

SPATIO-TEMPORAL SPEECH ENHANCEMENT TECHNIQUE BASED ON GENERALIZED EIGENVALUE DECOMPOSITION

#29
20120224715
2012-09-06

Noise adaptive beamforming for microphone arrays

#30
20120219160
2012-08-30

Variable noise masking during periods of substantial silence

#31
20120116760
2012-05-10

Device for improving the intelligibility of speech in a multi-user communication system

#32
20120059648
2012-03-08

Voice activity detector (VAD)—based multiple-microphone acoustic noise suppression

#33
20110307249
2011-12-15

Method and acoustic signal processing system for interference and noise suppression in binaural microphone configurations

#34
20110288860
2011-11-24

SYSTEMS, METHODS, APPARATUS, AND COMPUTER-READABLE MEDIA FOR PROCESSING OF SPEECH SIGNALS USING HEAD-MOUNTED MICROPHONE PAIR

#35
20110286605
2011-11-24

NOISE SUPPRESSOR

#36
20110166856
2011-07-07

Noise profile determination for voice-related feature

#37
20110144988
2011-06-16

EMBEDDED AUDITORY SYSTEM AND METHOD FOR PROCESSING VOICE SIGNAL

#38
20100286981
2010-11-11

Method for estimating a fundamental frequency of a speech signal

#39
20100262424
2010-10-14

Method of eliminating background noise and a device using the same

#40
20100260353
2010-10-14

Noise reducing device and noise determining method

#41
20100198593
2010-08-05

Speech enhancement with noise level estimation adjustment

#42
20100145687
2010-06-10

REMOVING NOISE FROM SPEECH

#43
20100104112
2010-04-29

Variable noise masking during periods of substantial silence

#44
20100088092
2010-04-08

Method and arrangement for controlling smoothing of stationary background noise

#45
20100076756
2010-03-25

Spatio-temporal speech enhancement technique based on generalized eigenvalue decomposition

#46
20080304679
2008-12-11

System for processing an acoustic input signal to provide an output signal with reduced noise

#47
20080219472
2008-09-11

Noise suppressor

#48
20080208584
2008-08-28

Pausing a VoiceXML dialog of a multimodal application

#49
20080170708
2008-07-17

System for suppressing ambient noise in a hands-free device

#50
20080147392
2008-06-19

Push-to-talk system with enhanced noise reduction

#51
20070055507
2007-03-08

Low complexity noise reduction method

#52
20060224382
2006-10-05

Noise reduction and audio-visual speech activity detection

#53
20060106601
2006-05-18

Noise elimination method, apparatus and medium thereof

#54
20060095260
2006-05-04

Method and apparatus for vocal-cord signal recognition

#55
20060020449
2006-01-26

Method and system for generating colored comfort noise in the absence of silence insertion description packets

#56
20050232440
2005-10-20

Stationary spectral power dependent audio enhancement system

#57
20050152559
2005-07-14

Method for supressing surrounding noise in a hands-free device and hands-free device

#58
20050084094
2005-04-21

Telephone terminal with control of voice reproduction quality in the receiver

#59
20050027520
2005-02-03

Noise suppression