PT3438979T - Estimativa de ruído de fundo em sinais de áudio - Google Patents

Estimativa de ruído de fundo em sinais de áudio

Info

Publication number
PT3438979T
PT3438979T PT181959248T PT18195924T PT3438979T PT 3438979 T PT3438979 T PT 3438979T PT 181959248 T PT181959248 T PT 181959248T PT 18195924 T PT18195924 T PT 18195924T PT 3438979 T PT3438979 T PT 3438979T
Authority
PT
Portugal
Prior art keywords
estimation
audio signals
background noise
noise
background
Prior art date
Application number
PT181959248T
Other languages
English (en)
Original Assignee
Ericsson Telefon Ab L M
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of PT3438979T publication Critical patent/PT3438979T/pt

Links

Classifications

    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/03Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
    • G10L25/21Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being power information
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00Processing 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
    • G10L21/02Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208Noise filtering
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/04Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
    • G10L19/16Vocoder architecture
    • G10L19/18Vocoders using multiple modes
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/04Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
    • G10L19/16Vocoder architecture
    • G10L19/18Vocoders using multiple modes
    • G10L19/24Variable rate codecs, e.g. for generating different qualities using a scalable representation such as hierarchical encoding or layered encoding
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00Processing 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
    • G10L21/02Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208Noise filtering
    • G10L21/0216Noise filtering characterised by the method used for estimating noise
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/03Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
    • G10L25/06Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being correlation coefficients
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/78Detection of presence or absence of voice signals
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/78Detection of presence or absence of voice signals
    • G10L25/81Detection of presence or absence of voice signals for discriminating voice from music
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/78Detection of presence or absence of voice signals
    • G10L25/84Detection of presence or absence of voice signals for discriminating voice from noise
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers
    • H04M1/60Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/62Constructional arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/22Processing or transfer of terminal data, e.g. status or physical capabilities
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/78Detection of presence or absence of voice signals
    • G10L2025/783Detection of presence or absence of voice signals based on threshold decision
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/78Detection of presence or absence of voice signals
    • G10L2025/783Detection of presence or absence of voice signals based on threshold decision
    • G10L2025/786Adaptive threshold
PT181959248T 2013-12-19 2014-12-01 Estimativa de ruído de fundo em sinais de áudio PT3438979T (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US201361918258P 2013-12-19 2013-12-19

Publications (1)

Publication Number Publication Date
PT3438979T true PT3438979T (pt) 2020-07-28

Family

ID=53403240

Family Applications (1)

Application Number Title Priority Date Filing Date
PT181959248T PT3438979T (pt) 2013-12-19 2014-12-01 Estimativa de ruído de fundo em sinais de áudio

Country Status (11)

Country Link
US (5) US9626986B2 (pt)
EP (3) EP3084763B1 (pt)
CN (3) CN110265058B (pt)
BR (1) BR112016014104B1 (pt)
DK (1) DK3719801T3 (pt)
ES (3) ES2941782T3 (pt)
HU (1) HUE041826T2 (pt)
PL (1) PL3084763T3 (pt)
PT (1) PT3438979T (pt)
RU (3) RU2720357C2 (pt)
WO (1) WO2015094083A1 (pt)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10375131B2 (en) * 2017-05-19 2019-08-06 Cisco Technology, Inc. Selectively transforming audio streams based on audio energy estimate
CN111261143B (zh) * 2018-12-03 2024-03-22 嘉楠明芯(北京)科技有限公司 一种语音唤醒方法、装置及计算机可读存储介质
KR20210031265A (ko) * 2019-09-11 2021-03-19 삼성전자주식회사 전자 장치 및 그 동작방법
CN111554314A (zh) * 2020-05-15 2020-08-18 腾讯科技(深圳)有限公司 噪声检测方法、装置、终端及存储介质
CN112908352B (zh) * 2021-03-01 2024-04-16 百果园技术(新加坡)有限公司 一种音频去噪方法、装置、电子设备及存储介质
CN114495907A (zh) * 2022-01-27 2022-05-13 多益网络有限公司 自适应的语音活动检测方法、装置、设备以及存储介质
CN115347978B (zh) * 2022-08-03 2023-09-01 新诺北斗航科信息技术(厦门)股份有限公司 一种识别ais帧头数据的方法、装置及存储介质

Family Cites Families (81)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4025721A (en) * 1976-05-04 1977-05-24 Biocommunications Research Corporation Method of and means for adaptively filtering near-stationary noise from speech
JPS58140798A (ja) * 1982-02-15 1983-08-20 株式会社日立製作所 音声ピツチ抽出方法
DE3236000A1 (de) * 1982-09-29 1984-03-29 Blaupunkt-Werke Gmbh, 3200 Hildesheim Verfahren zum klassifizieren von audiosignalen
US4628529A (en) * 1985-07-01 1986-12-09 Motorola, Inc. Noise suppression system
US4811404A (en) * 1987-10-01 1989-03-07 Motorola, Inc. Noise suppression system
FR2687496B1 (fr) * 1992-02-18 1994-04-01 Alcatel Radiotelephone Procede de reduction de bruit acoustique dans un signal de parole.
US5485522A (en) * 1993-09-29 1996-01-16 Ericsson Ge Mobile Communications, Inc. System for adaptively reducing noise in speech signals
US5657422A (en) * 1994-01-28 1997-08-12 Lucent Technologies Inc. Voice activity detection driven noise remediator
US5742734A (en) 1994-08-10 1998-04-21 Qualcomm Incorporated Encoding rate selection in a variable rate vocoder
US5768473A (en) * 1995-01-30 1998-06-16 Noise Cancellation Technologies, Inc. Adaptive speech filter
US5763473A (en) 1996-12-06 1998-06-09 American Home Procucts Corporation Use of 2-substituted benzimidazole as smooth muscle cell proliferation inhibitors
US6570991B1 (en) * 1996-12-18 2003-05-27 Interval Research Corporation Multi-feature speech/music discrimination system
US5845522A (en) * 1997-03-10 1998-12-08 Shen; Mu-Lin Fastening arrangement for a cylindrical lock
FI113903B (fi) * 1997-05-07 2004-06-30 Nokia Corp Puheen koodaus
US6035048A (en) * 1997-06-18 2000-03-07 Lucent Technologies Inc. Method and apparatus for reducing noise in speech and audio signals
US6122384A (en) * 1997-09-02 2000-09-19 Qualcomm Inc. Noise suppression system and method
US6104992A (en) * 1998-08-24 2000-08-15 Conexant Systems, Inc. Adaptive gain reduction to produce fixed codebook target signal
US6108610A (en) * 1998-10-13 2000-08-22 Noise Cancellation Technologies, Inc. Method and system for updating noise estimates during pauses in an information signal
US6424938B1 (en) * 1998-11-23 2002-07-23 Telefonaktiebolaget L M Ericsson Complex signal activity detection for improved speech/noise classification of an audio signal
US6456964B2 (en) * 1998-12-21 2002-09-24 Qualcomm, Incorporated Encoding of periodic speech using prototype waveforms
FI118359B (fi) * 1999-01-18 2007-10-15 Nokia Corp Menetelmä puheentunnistuksessa ja puheentunnistuslaite ja langaton viestin
US6618701B2 (en) * 1999-04-19 2003-09-09 Motorola, Inc. Method and system for noise suppression using external voice activity detection
US6381568B1 (en) * 1999-05-05 2002-04-30 The United States Of America As Represented By The National Security Agency Method of transmitting speech using discontinuous transmission and comfort noise
US6519559B1 (en) * 1999-07-29 2003-02-11 Intel Corporation Apparatus and method for the enhancement of signals
US6157670A (en) * 1999-08-10 2000-12-05 Telogy Networks, Inc. Background energy estimation
FI116643B (fi) * 1999-11-15 2006-01-13 Nokia Corp Kohinan vaimennus
US7263074B2 (en) * 1999-12-09 2007-08-28 Broadcom Corporation Voice activity detection based on far-end and near-end statistics
DE10017646A1 (de) * 2000-04-08 2001-10-11 Alcatel Sa Geräuschunterdrückung im Zeitbereich
US6901362B1 (en) * 2000-04-19 2005-05-31 Microsoft Corporation Audio segmentation and classification
US6584438B1 (en) * 2000-04-24 2003-06-24 Qualcomm Incorporated Frame erasure compensation method in a variable rate speech coder
US7010480B2 (en) * 2000-09-15 2006-03-07 Mindspeed Technologies, Inc. Controlling a weighting filter based on the spectral content of a speech signal
US7236929B2 (en) * 2001-05-09 2007-06-26 Plantronics, Inc. Echo suppression and speech detection techniques for telephony applications
US6963834B2 (en) * 2001-05-29 2005-11-08 International Business Machines Corporation Method of speech recognition using empirically determined word candidates
US7031916B2 (en) * 2001-06-01 2006-04-18 Texas Instruments Incorporated Method for converging a G.729 Annex B compliant voice activity detection circuit
US7386217B2 (en) * 2001-12-14 2008-06-10 Hewlett-Packard Development Company, L.P. Indexing video by detecting speech and music in audio
BR0312973A (pt) * 2002-07-26 2005-08-09 Motorola Inc Método para estimativa dinâmica rápida do ruìdo de fundo
KR100477699B1 (ko) * 2003-01-15 2005-03-18 삼성전자주식회사 양자화 잡음 분포 조절 방법 및 장치
JP4460256B2 (ja) 2003-10-02 2010-05-12 日本電信電話株式会社 雑音低減処理方法、この方法を実施する装置、プログラム、記録媒体
DE60320414T2 (de) * 2003-11-12 2009-05-20 Sony Deutschland Gmbh Vorrichtung und Verfahren zur automatischen Extraktion von wichtigen Ereignissen in Audiosignalen
JP4490090B2 (ja) * 2003-12-25 2010-06-23 株式会社エヌ・ティ・ティ・ドコモ 有音無音判定装置および有音無音判定方法
US20050159942A1 (en) * 2004-01-15 2005-07-21 Manoj Singhal Classification of speech and music using linear predictive coding coefficients
US7492889B2 (en) * 2004-04-23 2009-02-17 Acoustic Technologies, Inc. Noise suppression based on bark band wiener filtering and modified doblinger noise estimate
US7558729B1 (en) * 2004-07-16 2009-07-07 Mindspeed Technologies, Inc. Music detection for enhancing echo cancellation and speech coding
US7454010B1 (en) * 2004-11-03 2008-11-18 Acoustic Technologies, Inc. Noise reduction and comfort noise gain control using bark band weiner filter and linear attenuation
JP4551817B2 (ja) * 2005-05-20 2010-09-29 Okiセミコンダクタ株式会社 ノイズレベル推定方法及びその装置
US20070078645A1 (en) * 2005-09-30 2007-04-05 Nokia Corporation Filterbank-based processing of speech signals
US8126706B2 (en) * 2005-12-09 2012-02-28 Acoustic Technologies, Inc. Music detector for echo cancellation and noise reduction
JP4321518B2 (ja) * 2005-12-27 2009-08-26 三菱電機株式会社 楽曲区間検出方法、及びその装置、並びにデータ記録方法、及びその装置
US8532984B2 (en) * 2006-07-31 2013-09-10 Qualcomm Incorporated Systems, methods, and apparatus for wideband encoding and decoding of active frames
US20080033583A1 (en) * 2006-08-03 2008-02-07 Broadcom Corporation Robust Speech/Music Classification for Audio Signals
US8326620B2 (en) * 2008-04-30 2012-12-04 Qnx Software Systems Limited Robust downlink speech and noise detector
US8335685B2 (en) * 2006-12-22 2012-12-18 Qnx Software Systems Limited Ambient noise compensation system robust to high excitation noise
US7521622B1 (en) * 2007-02-16 2009-04-21 Hewlett-Packard Development Company, L.P. Noise-resistant detection of harmonic segments of audio signals
US8990073B2 (en) * 2007-06-22 2015-03-24 Voiceage Corporation Method and device for sound activity detection and sound signal classification
US20090012786A1 (en) * 2007-07-06 2009-01-08 Texas Instruments Incorporated Adaptive Noise Cancellation
US8489396B2 (en) * 2007-07-25 2013-07-16 Qnx Software Systems Limited Noise reduction with integrated tonal noise reduction
US20090043577A1 (en) * 2007-08-10 2009-02-12 Ditech Networks, Inc. Signal presence detection using bi-directional communication data
JP5336522B2 (ja) 2008-03-10 2013-11-06 フラウンホッファー−ゲゼルシャフト ツァ フェルダールング デァ アンゲヴァンテン フォアシュンク エー.ファオ 瞬間的事象を有する音声信号の操作装置および操作方法
JP4631939B2 (ja) * 2008-06-27 2011-02-16 ソニー株式会社 ノイズ低減音声再生装置およびノイズ低減音声再生方法
US9253568B2 (en) * 2008-07-25 2016-02-02 Broadcom Corporation Single-microphone wind noise suppression
US8798289B1 (en) * 2008-08-05 2014-08-05 Audience, Inc. Adaptive power saving for an audio device
EP2151822B8 (en) * 2008-08-05 2018-10-24 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for processing an audio signal for speech enhancement using a feature extraction
ATE515020T1 (de) * 2009-03-20 2011-07-15 Harman Becker Automotive Sys Verfahren und vorrichtung zur dämpfung von rauschen in einem eingangssignal
ATE512438T1 (de) * 2009-03-23 2011-06-15 Harman Becker Automotive Sys Hintergrundgeräuschschätzung
US8244523B1 (en) * 2009-04-08 2012-08-14 Rockwell Collins, Inc. Systems and methods for noise reduction
KR101616054B1 (ko) * 2009-04-17 2016-04-28 삼성전자주식회사 음성 검출 장치 및 방법
US8340964B2 (en) * 2009-07-02 2012-12-25 Alon Konchitsky Speech and music discriminator for multi-media application
DE102009034238A1 (de) 2009-07-22 2011-02-17 Daimler Ag Statorsegment und Stator eines Hybrid- oder Elektrofahrzeuges
DE102009034235A1 (de) 2009-07-22 2011-02-17 Daimler Ag Stator eines Hybrid- oder Elektrofahrzeuges, Statorträger
US9215538B2 (en) * 2009-08-04 2015-12-15 Nokia Technologies Oy Method and apparatus for audio signal classification
KR20110036175A (ko) * 2009-10-01 2011-04-07 삼성전자주식회사 멀티밴드를 이용한 잡음 제거 장치 및 방법
US9401160B2 (en) * 2009-10-19 2016-07-26 Telefonaktiebolaget Lm Ericsson (Publ) Methods and voice activity detectors for speech encoders
PT2491559E (pt) * 2009-10-19 2015-05-07 Ericsson Telefon Ab L M Método e estimador de fundo para a detecção de actividade de voz
EP2502229B1 (en) * 2009-11-19 2017-08-09 Telefonaktiebolaget LM Ericsson (publ) Methods and arrangements for loudness and sharpness compensation in audio codecs
US8606571B1 (en) * 2010-04-19 2013-12-10 Audience, Inc. Spatial selectivity noise reduction tradeoff for multi-microphone systems
KR20120080409A (ko) * 2011-01-07 2012-07-17 삼성전자주식회사 잡음 구간 판별에 의한 잡음 추정 장치 및 방법
US8990074B2 (en) * 2011-05-24 2015-03-24 Qualcomm Incorporated Noise-robust speech coding mode classification
EP2629295B1 (en) * 2012-02-16 2017-12-20 2236008 Ontario Inc. System and method for noise estimation with music detection
CN102820035A (zh) * 2012-08-23 2012-12-12 无锡思达物电子技术有限公司 一种对长时变噪声的自适应判决方法
GB2521881B (en) * 2014-04-02 2016-02-10 Imagination Tech Ltd Auto-tuning of non-linear processor threshold
CN112927725A (zh) * 2014-07-29 2021-06-08 瑞典爱立信有限公司 用于估计背景噪声的方法和背景噪声估计器

Also Published As

Publication number Publication date
BR112016014104B1 (pt) 2020-12-29
RU2720357C2 (ru) 2020-04-29
DK3719801T3 (da) 2023-02-27
US9818434B2 (en) 2017-11-14
US20200152217A1 (en) 2020-05-14
EP3084763B1 (en) 2018-10-24
EP3438979A1 (en) 2019-02-06
EP3438979B1 (en) 2020-06-24
US20190259407A1 (en) 2019-08-22
CN110265058B (zh) 2023-01-17
EP3719801A1 (en) 2020-10-07
EP3719801B1 (en) 2023-02-01
US10573332B2 (en) 2020-02-25
ES2819032T3 (es) 2021-04-14
CN110265058A (zh) 2019-09-20
RU2020114434A (ru) 2021-10-25
US11164590B2 (en) 2021-11-02
RU2618940C1 (ru) 2017-05-11
EP3084763A4 (en) 2016-12-14
RU2017112844A (ru) 2019-01-25
CN110265059A (zh) 2019-09-20
CN110265059B (zh) 2023-03-31
PL3084763T3 (pl) 2019-03-29
US10311890B2 (en) 2019-06-04
ES2697423T3 (es) 2019-01-23
US9626986B2 (en) 2017-04-18
CN105830154B (zh) 2019-06-28
US20160314799A1 (en) 2016-10-27
ES2941782T3 (es) 2023-05-25
WO2015094083A1 (en) 2015-06-25
CN105830154A (zh) 2016-08-03
RU2020114434A3 (pt) 2021-12-02
EP3084763A1 (en) 2016-10-26
US20170186447A1 (en) 2017-06-29
US20180033455A1 (en) 2018-02-01
RU2017112844A3 (pt) 2020-03-25
HUE041826T2 (hu) 2019-05-28

Similar Documents

Publication Publication Date Title
ZA201903140B (en) Estimation of background noise in audio signals
EP2962214A4 (en) PRECAUTIONARY AUDIO CONTENT
EP2987338A4 (en) HELMET FOR REDUCING NOISE
GB201310861D0 (en) Audio signal analysis
HK1218674A1 (zh) 使用估計的空間參數的音頻信號增強
EP2994713A4 (en) MUFFLER
HUE041826T2 (hu) Háttérzaj becslés audio jelekben
PL3057500T3 (pl) Dekompozycja sygnałów niestacjonarnych na składniki funkcjonalne
EP2974370A4 (en) REDUCTION OF AUDIO DISTORTION IN AN AUDIO SYSTEM
GB2519379B (en) Noise reduction in multi-microphone systems
GB201308247D0 (en) Noise reduction
GB201310597D0 (en) Audio Processing
EP2962299A4 (en) AUDIO SIGNAL ANALYSIS
IL240654A0 (en) Noise reduction in an optoacoustic system
HK1216263A1 (zh) 低複雜度音調自適應音頻信號量化
GB201400237D0 (en) Digital encapsulation of audio signals
IL244785B (en) A structure that removes correlation for parametric reconstruction of an acoustic signal
GB2519672B (en) Low profile loudspeaker transducer
GB201305943D0 (en) Receivevers and methods for receiving signals
HK1200628A1 (en) Sound field reproduction
SG11201509619WA (en) Acoustic device capable of producing active noise reduction
GB2501150B (en) An audio amplifier
HK1207226A1 (en) Dynamic enhancement of media experience
GB201310612D0 (en) Processing signals