CN103733254B - 在个人语音设备中的麦克风覆盖检测 - Google Patents

在个人语音设备中的麦克风覆盖检测 Download PDF

Info

Publication number
CN103733254B
CN103733254B CN201280038329.6A CN201280038329A CN103733254B CN 103733254 B CN103733254 B CN 103733254B CN 201280038329 A CN201280038329 A CN 201280038329A CN 103733254 B CN103733254 B CN 103733254B
Authority
CN
China
Prior art keywords
microphone
signal
level
speech
sound
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
CN201280038329.6A
Other languages
English (en)
Other versions
CN103733254A (zh
Inventor
N·卡瓦特拉
杰弗里·奥尔德森
J·D·亨德里克斯
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cirrus Logic Inc
Original Assignee
Cirrus Logic Inc
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 Cirrus Logic Inc filed Critical Cirrus Logic Inc
Publication of CN103733254A publication Critical patent/CN103733254A/zh
Application granted granted Critical
Publication of CN103733254B publication Critical patent/CN103733254B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1781—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions
    • G10K11/17821—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions characterised by the analysis of the input signals only
    • G10K11/17823—Reference signals, e.g. ambient acoustic environment
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1781—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions
    • G10K11/17821—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions characterised by the analysis of the input signals only
    • G10K11/17825—Error signals
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1783—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase handling or detecting of non-standard events or conditions, e.g. changing operating modes under specific operating conditions
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1783—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase handling or detecting of non-standard events or conditions, e.g. changing operating modes under specific operating conditions
    • G10K11/17837—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase handling or detecting of non-standard events or conditions, e.g. changing operating modes under specific operating conditions by retaining part of the ambient acoustic environment, e.g. speech or alarm signals that the user needs to hear
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1785—Methods, e.g. algorithms; Devices
    • G10K11/17853—Methods, e.g. algorithms; Devices of the filter
    • G10K11/17854—Methods, e.g. algorithms; Devices of the filter the filter being an adaptive filter
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1785—Methods, e.g. algorithms; Devices
    • G10K11/17855—Methods, e.g. algorithms; Devices for improving speed or power requirements
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1787—General system configurations
    • G10K11/17879—General system configurations using both a reference signal and an error signal
    • G10K11/17881—General system configurations using both a reference signal and an error signal the reference signal being an acoustic signal, e.g. recorded with a microphone
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1787—General system configurations
    • G10K11/17885—General system configurations additionally using a desired external signal, e.g. pass-through audio such as music or speech
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—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
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208—Noise filtering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/20—Arrangements for preventing acoustic feed-back
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/10—Applications
    • G10K2210/108—Communication systems, e.g. where useful sound is kept and noise is cancelled
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30—Means
    • G10K2210/301—Computational
    • G10K2210/3023—Estimation of noise, e.g. on error signals
    • G10K2210/30231—Sources, e.g. identifying noisy processes or components
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30—Means
    • G10K2210/301—Computational
    • G10K2210/3039—Nonlinear, e.g. clipping, numerical truncation, thresholding or variable input and output gain
    • G10K2210/30391—Resetting of the filter parameters or changing the algorithm according to prevailing conditions
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/50—Miscellaneous
    • G10K2210/503—Diagnostics; Stability; Alarms; Failsafe

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Signal Processing (AREA)
  • Computational Linguistics (AREA)
  • Quality & Reliability (AREA)
  • Human Computer Interaction (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Telephone Function (AREA)
  • Noise Elimination (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

一种个人语音设备，例如无线电话，包括噪音消除电路，其适应性地从参考麦克风信号产生抗噪音信号，并且将该抗噪音信号注入到扬声器或其他传感器输出以导致环境语音声音的消除。误差麦克风也可以提供在扬声器附近以估计从噪音消除电路穿过传感器的电声路径。处理电路使用参考麦克风和/或误差麦克风，可选地连同提供用来捕获近端语音的麦克风，通过比较它们的接收信号内容来确定参考麦克风和/或误差麦克风是否被阻塞并且用来避免产生错误抗噪音。

Description

在个人语音设备中的麦克风覆盖检测
技术领域
本发明总体上涉及一种包括噪音消除的人语音设备例如无线电话，并且更具体地，涉及一种在其中检测使用于噪音消除的其中一个麦克风的阻塞的个人语音设备。
背景技术
无线电话例如移动电话／蜂窝式电话、无绳电话及其他消费性语音装置例如mp3播放器应用广泛。可通过使用麦克风测量周围声事件及随后使用信号处理将抗噪音信号插入至装置的输出中以消除周围声事件，来提供噪音消除从而改进这些装置在清晰度方面的效能。
由于围绕个人语音设备，例如无线电话，的声环境可能发生极大变化，该声环境取决于所存在的噪音源及装置本身的位置故需调适噪音消除以考虑这些环境变化。但是，适应性噪音消除电路可能是复杂的；消耗额外电力且在特定情况下可能产生非所要的结果。
因此，需提供一种在可变声环境中提供噪音消除的个人语音设备，包含无线电话。
发明内容
以一种个人语音设备、一种操作方法及一种集成电路完成提供在可变声环境中提供噪音消除的个人语音设备的上述目的。
个人语音设备包含外壳，传感器安装在外壳上用于重现包含用于对听者播放的源语音及用于对抗周围语音声音在传感器的声输出中的影响的抗噪音信号两者的语音信号。参考麦克风安装在外壳上以提供指示周围语音声音的参考麦克风信号。个人语音装置进一步包含外壳内的适应性噪音消除（ANC）处理电路，用于适应性地从参考麦克风信号产生抗噪音信号以便抗噪音信号导致周围语音声音的显著消除。还可以包含误差麦克风用于校正从处理电路的输出穿过传感器的电声音路径。ANC处理电路监控从参考麦克风和/或误差麦克风接收的环境语音的内容，和/或监控如果个人语音设备是无线电话时提供用来捕获近端语音的麦克风的输出。通过比较从两个不同麦克风接收的语音，ANC处理电路可以确定其中一个噪音消除麦克风是否被覆盖并且采取行动来阻止抗噪音信号被不正确地调适或者产生不期望的输出。
如附图所示，可更具体地从本发明的较佳实施例的下列描述中了解本发明的上述及其他目的、特征及优点。
附图说明
图1为根据本发明的实施例的无线电话10的图解。
图2为根据本发明的实施例的无线电话10内的电路的方框图。
图3为描绘根据本发明的实施例的图2的编译码器（CODEC）集成电路20的ANC电路30内的信号处理电路及功能块的方框图。
图4为图解说明根据本发明的实施例的与在图3的电路中的麦克风覆盖操作相关的功能块的方框图。
图5为根据本发明的实施例的判定麦克风已经被阻塞的方法的流程图。
图6为描绘根据本发明的实施例的集成电路内的信号处理电路及功能块的方框图。
具体实施方式
本发明涵盖噪音消除技术及可在例如无线电话的个人语音设备中实施的电路。个人语音设备包含适应性噪音消除(ANC)电路，该适应性噪音消除(ANC)电路测量周围声环境并产生注入扬声器（或其他传感器）输出中以消除周围声事件的信号。提供参考麦克风以测量周围声环境，并且包含误差麦克风以提供从处理电路的输出穿过扬声器的电声音路径的估计。ANC处理电路监控参考麦克风信号、误差麦克风信号和提供用来捕获近端语音的语音麦克风信号中至少两者的内容，以便确定参考麦克风或误差麦克风其中一个是否被阻塞，例如用手指或其它阻塞物覆盖。
现参考图1，根据本发明的实施例所示的无线电话10展示为邻近人的耳部5。所示的无线电话10为可采用根据本发明的实施例的技术的装置的实例，但是应了解并非需要所示的无线电话10或后续图解中所描绘的电路中所体现的元件或组态的全部以实践申请专利范围中所述的本发明。无线电话10包含传感器，例如扬声器SPKR，其重现无线电话10所接收的远端语音连同其他本端语音事件例如铃声、所储存的语音节目材料、近端语音（即无线电话10的使用者的语音）的注入以提供平衡的会话感知及需通过无线电话10重现的其他语音，例如来自网页的源或无线电话10所接收的其他网络通信及语音指示，例如电池低及其他系统事件通告。提供近端语音麦克风NS以捕捉近端语音，该近端语音从无线电话10传输至其他会话参与者。
无线电话10包含适应性噪音消除(ANC)电路及特征，它们将抗噪音信号注入至扬声器SPKR中以改进远端语音及扬声器SPKR所重现的其他语音的清晰度。参考麦克风R提供用于测量周围声环境且为定位为远离使用者的嘴部的典型位置，使得近端语音在参考麦克风R所产生的信号中最小化。提供第三麦克风（误差麦克风E）以通过当无线电话10紧邻耳部5时提供周围语音与靠近耳部5的扬声器SPKR所重现的语音的组合的测量而进一步改进ANC操作。无线电话10内的例示性电路14包含语音CODEC集成电路20，该语音CODEC集成电路20接收来自参考麦克风R、近端语音麦克风NS及误差麦克风E的信号并与其他集成电路例如含有无线电话收发器的RF集成电路12对接。在本发明的其他实施例中，本文所揭示的电路及技术可结合到单个集成电路，该单个集体电路含有用于实施整个个人语音设备，例如MP3播放器单晶片集成电路的控制电路及其他功能性。
一般而言，本发明的ANC技术测量撞击在参考麦克风R上的环境声事件（与扬声器SPKR和／或近端语音的输出相反），且也通过测量撞击在误差麦克风E上的相同环境声事件，所示的无线电话10的ANC处理电路调适从参考麦克风R的输出产生的抗噪音信号从而具有使误差麦克风E上的环境声音事件的振幅最小化的特性。由于声路径P(z)从参考麦克风R延伸至误差麦克风E，所以ANC电路实质上估计声路径P(z)结合去除电声路径S(z)的影响，该电声路径S(z)代表CODEC集成电路（IC）20的语音输出电路的响应及扬声器SPKR的声／电转移函数，该函数包含特定声环境中扬声器SPKR与误差麦克风E之间的耦合，其受耳部5及其他实物的近接性和结构和当无线电话未牢固地压至耳部5时可能邻近无线电话10的其他实物和人的头部结构的影响。虽然所示的无线电话10包含具有第三近端语音麦克风NS的双麦克风ANC系统，但是本发明的一些方面可实践为不包含单独误差麦克风及参考麦克风的系统，或者无线电话使用近端语音麦克风NS以执行参考麦克风R的功能。此外，在仅设计用于语音播放的个人语音设备中，通常不包含近端语音麦克风NS且在不改变本发明的范畴的情况下可省略下文更详细描述的电路中的近端语音信号路径，而非将针对输入而提供的选项限于涵盖检测方案的麦克风。
现参考图2，无线电话10内的电路以方框图展示。CODEC集成电路20包含：模数转换器（ADC）21A，其用于接收参考麦克风信号及产生参考麦克风信号的数位表示ref；ADC21B，其用于接收误差麦克风信号及产生误差麦克风信号的数位表示err；及ADC21C，其用于接收近端语音麦克风信号及产生误差麦克风信号的数位表示ns。CODEC IC20从放大器A1产生用于驱动扬声器SPKR的输出，该放大器A1放大接收组合器26的输出的数模转换器(DAC)23的输出。组合器26组合来自内部语音源24的语音信号、ANC电路30所产生的抗噪音信号（其已知具有与参考麦克风信号ref中的噪音相同的极性且因此被组合器26减除）、近端语音信号ns的一部分以便无线电话10的使用者听到其自己与下行链路语音ds成适当关联的声音，该下行链路语音ds接收自射频（RF）集成电路22且也被组合器26组合。近端语音信号ns也被提供至RF集成电路22且作为上行链路语音经由天线ANT传输给服务提供者。
现参考图3，根据本发明的实施例展示ANC电路30的细节。适应性滤波器32接收参考麦克风信号ref且在理想情况下将它的转移函数W(z)调适为P(z)/S(z)以产生抗噪音信号。通过W系数控制块31控制适应性滤波器32的系数，该W系数控制块31使用两个信号的相关性判定适应性滤波器32的响应，该适应性滤波器32通常在最小均方意义上使在参考麦克风信号ref的那些分量与误差麦克风信号err之间的误差最小化。通过W系数控制块31比较的信号为如通过滤波器34B所提供的路径S(z)的响应的估计的拷贝而塑形的参考麦克风信号ref和包含误差麦克风信号err的另一信号。通过用路径S(z)的响应的估计的拷贝SECOPY(z)变换参考麦克风信号ref并且使所得信号与误差麦克风信号err之间的差异最小化，适应性滤波器32调适为P(z)/S(z)的所要的响应。除误差麦克风信号err以外，通过W系数控制块31与滤波器34B的输出作比较的信号也包含已通过滤波器响应SE(z)处理的相反数量的下行链路语音信号ds，其中响应SECOPY(z)是一拷贝。通过注入相反数量的下行链路语音信号ds，防止适应性滤波器32调适为误差麦克风信号err中所存在的相对大量下行链路语音，且通过用路径S(z)的响应的估计变换下行链路语音信号ds的反向拷贝，在比较前从误差麦克风信号err去除的下行链路语音应与误差麦克风信号err上重现的下行链路语音信号ds的预期版本匹配，因为S(z)的电路径及声路径为下行链路语音信号ds到达误差麦克风E所采用的路径。
为了实施上述内容，适应性滤波器34A具有由SE系数控制块33控制的系数，该SE系数控制块33在上述经过滤的下行链路语音信号ds去除后比较下行链路语音信号ds和误差麦克风信号err，该下行链路语音信号ds已通过适应性滤波器34A过滤以代表递送至误差麦克风E的预期下行链路语音且通过组合器36从适应性滤波器34A的输出去除。SE系数控制块33使实际下行链路语音信号ds与误差麦克风信号err中所存在的下行链路语音信号ds的分量相关联。适应性滤波器34A由此经调适以从下行链路语音信号ds产生一信号，在从误差麦克风信号err减除时，该信号含有并非归因于下行链路语音信号ds的误差麦克风信号err的内容。如下文更详细地揭示，事件检测和控制逻辑38响应于与本发明的各种实施例一致的各种事件来执行各种动作。
因为适应性滤波器32从参考麦克风信号ref产生抗噪音信号，所以如果参考麦克风R被手指或其他障碍物覆盖时，W系数控制31将没有输入来从参考麦克风信号ref推导它的调适，或者输入将是有跨过参考麦克风R的障碍物的运动制造的声音。参考麦克风R的覆盖也会导致参考麦克风信号由于内部耦合，主要反射扬声器SPKR的输出，其是非常不期望的，因为在那些情况下抗噪音信号将通常试图消除下行链路语音信号ds。在任何上述情况中，没有恰当的参考麦克风信号ref不能正确地调适W，并且会产生不期望的抗噪音信号。如果误差麦克风E由障碍物覆盖，例如听者耳部5的一部分，那么SE系数控制33将不正确地调适，其将导致W系数控制31也不正确地调适。
现在参考图4，根据本发明的实施例的用于检测麦克风阻塞的方法的细节示出为功能块的方框图，该方法可以实施为由执行误差检测和控制块的处理器执行的算法，但是其至少一部分可以替代地在集成电路中执行。每个麦克风信号，参考麦克风信号ref，误差麦克风信号err和近端语音麦克风信号ns分别提供为到相应低通滤波器62A、62B或62C的输入，低通滤波器去除相应麦克风信号具有在截止频率以上的频率的分量，截止频率可以预确定为例如100Hz，或者其可以调适到环境情况。在任何情况下，截止频率一般应该在以该频率多路径相位差和反射可以在麦克风信号中产生幅度差、以及以该频率麦克风的方向性可以播放的频率以下。低通滤波器62A、62B或62C的输出分别提供给相应的信号位准检测器64A、64B或64C，它们提供指示在每个麦克风信号中的低频分量的幅度的信号：指示在参考麦克风信号ref中的低频分量的幅度的位准信号Lref，指示在误差麦克风信号err中的低频分量的幅度的位准信号Lerr，以及指示在近端语音麦克风信号ns中的低频分量的幅度的位准信号Lns。位准信号Lref、Lerr和Lns被提供给位准比较模块66，其取决于特定检测情况产生控制输出信号，给上述的ANC电路发出信号以静音ANC作用，即关闭抗噪音信号，冻结调适W(z)和/或SE(z)，复位W(z)和/或SE(z)的系数。
现在参考图5，用流程图示出根据本发明的实施例的引用检测麦克风阻塞的方法的细节。如果位准信号Lns大于位准信号Lref超过预定阈值（决定70），那么认为参考麦克风R被阻塞并且采用行动来静音ANC系统以及冻结调适W(z)（步骤72）。如果位准信号Lns大于位准信号Lerr超过预定阈值（决定74），那么认为误差麦克风E被阻塞并且采用行动来冻结调适W(z)和/或SE(z)，同时将W(z)和SE(z)两者的系数复位到预定值（步骤76）。直到ANC操作被终止（决定78），例如无线电话关闭，重复步骤70-步骤78。图5的流程图仅为可以实施来确定麦克风是否被阻塞的检测方法的一个示例。例如在没有语言麦克风ns的设备中，可以比较参考麦克风信号ref和误差麦克风信号err的低频分量，或者如果相应低频位准信号Lref超过另一个预定的量，指示另一个麦克风被覆盖时，可以采取行动。并且，在不脱离本发明精神和范围情况下，采取的行动可以不同，例如仅静音ANC，或者在任何覆盖情况下复位所有适应性滤波器并且静音ANC，等等。
现参考图6，展示ANC系统的方框图以图解说明如可能在CODEC集成电路20内实施的根据本发明的实施例的ANC技术。通过△-∑ADC41A产生参考麦克风信号ref，该△-∑ADC41A以64倍超取样操作且其输出通过降低取样器(decimator)42A降低取样至一半以产生32倍超取样信号。△-∑塑形器43A在频带外散布影像的能量，其中并列一对滤波器级44A及44B的结果响应将具有显著响应。滤波器级44B具有固定响应WFIXED(Z)，该固定响应WFIXED(Z)通常经预定以提供针对典型使用者的无线电话10的特定设计的P(z)／S(z)的估计下的起始点。通过适应性滤波器级44A提供P(z)／S(z)的估计的响应的适应性部分WADAPT(Z)，该适应性滤波器级44A为通过泄漏最小均方(LMS)系数控制器54A控制。当未提供误差输入导致泄漏LMS系数控制器54A调适时，泄漏LMS系数控制器54A泄漏，这是因为响应随时间而正规化为平坦或另外预定的响应。提供泄漏控制器以防止在特定环境状况下可能出现的长期不稳定，且一般使系统针对ANC响应的特定敏感性方面更稳健。
如在图3的示例中，在图6所描绘的系统中，通过S(z)的估计的拷贝SECOPY(z)，通过具有响应SECOPY(z)的滤波器51过滤参考麦克风信号，该滤波器51的输出通过取样器52A降低到1/32以产生基频语音信号，该基频语音信号经由无限脉冲响应(IIR)滤波器53A提供至泄漏LMS54A。通过△-∑ADC41C产生误差麦克风信号err，该△-∑ADC41C以64倍超取样操作且其输出通过取样器42B取样一半以产生32倍超取样信号。如图3的系统中，通过组合器46C将已通过适应性滤波器过滤以施加响应S(z)的数量的下行链路语音ds从误差麦克风信号err去除，该组合器46C的输出通过取样器52C取样至1/32倍以产生基频语音信号，该基频语音信号经由无限脉冲响应(IIR)滤波器53B提供至泄漏LMS54A。通过另外并列一组适应性滤波器级55A及55B产生响应S(z)，其中滤波器级55B具有固定响应SEFIXED(z)且其中另一滤波器级55A具有通过泄漏LMS系数控制器54B控制的适应性响应SEADAPT(z)。通过组合器46E组合适应性滤波器级55A与55B的输出。类似于上述滤波器响应W(z)的实施方案，响应SEFIXED(z)通常为已知在各种操作状况下针对电／声路径S(z)提供合适起始点的预定响应。在图6的系统中提供单独控制值以控制具有响应SECOPY(z)的适应性滤波器51，该适应性滤波器51展示为单个适应性滤波器级。但是，适应性滤波器51替代地可用两个并列级实施且用于控制适应性滤波器级55A的相同控制值随后可用于控制在适应性滤波器51的实施方案中的可调适级。至泄漏LMS控制块54B的输入也为基频，该输入为由在组合器46C已去除从通过另一组合器46E组合的适应性滤波器级55A及滤波器级55B的组合输出产生的信号之后通过降低至1/32取样的取样器52B取样的下行链路语音信号ds提供。组合器46C的输出代表去除具有归因于下行链路语音信号ds的分量的误差麦克风信号err，该误差麦克风信号err在通过取样器52B取样后提供至LMS控制块54B。至LMS控制块54B的另一输入为取样器52C所产生的基频信号。
基频及超取样信号的上述配置提供用于简化的控制及适应性控制块例如泄漏LMS控制器54A及54B中所消耗的电力的减小，同时提供经由在超取样速率下实施适应性滤波器级44A至44B、55A至55B及适应性滤波器51而赋予的分接头灵活性。图6的系统的其余部分包含组合器46D，该组合器46D将下行链路语音ds与内部语音ia及已经由∑-△ADC41B产生并通过侧音衰减器56过滤的近端语音的一部分组合以防止回馈状况。组合器46D的输出经由∑-△塑形器43B塑形，该∑-△塑形器43B提供输入到已塑形以偏移影像至频带之外的滤波器级55A及55B，其中滤波器级55A及55B将具有显著响应。
根据本发明的实施例，组合器46D的输出也与已通过控制链处理的适应性滤波器级44A至44B的输出组合，该控制链包含针对每个滤波器级的相应硬静音块45A、45B，包含硬静音块45A、45B的输出的组合器46A，软静音块47及随后软限制器48以产生通过组合器46B用组合器46D的源语音输出减除的抗噪音信号。组合器46B的输出通过内插器49插入两倍且随后通过在64倍超取样速率下操作的∑-△DAC50重现。DAC50的输出被提供至放大器Al，该放大器A1产生递送至扬声器SPKR的信号。
事件检测和控制块38接收事件检测的各种输入，例如取样器52C的输出，其代表ANC系统如何良好地消除如在误差麦克风E处测量的语音噪音，取样器52A的输出，其代表由路径SE(z)塑形的周围声环境、下行链路语音信号ds和近端语音信号ns。事件检测和控制块38还在去除归因于下行链路语音信号ds的误差麦克风信号的分量之后接收误差麦克风信号err，并且还接收参考麦克风信号ref。事件检测和控制块38还包括执行上述麦克风覆盖检测和ANC控制技术的电路和/或处理算法。取决于检测的声事件，或者其他环境因素例如无线电话10相对于耳部5的位置，事件检测和控制块38将连同为了简洁在图6中未示出的其他各种输出产生上述控制输出，但是其他输出除了其他元件之外可以控制是否应用硬静音块45A-45B，静音块47和限制块48的特性，是否冻结或复位泄漏LMS控制块54A和54B，并且在本发明的一些实施例中，选择什么样的固定响应应用适应性滤波器例如适应性滤波器级44B和55B的固定部分。
图6的系统以及图2至图4的例示性电路中的元件每个或一些可直接实施为逻辑电路或通过处理器例如执行程序指令的数字信号处理(DSP)核实施，这些程序指令执行例如适应性滤波及LMS系数计算的操作。虽然DAC及ADC级通常用专用混合信号电路实施，但是本发明的ANC系统的架构通常适用于混合方式，其中举例而言逻辑可用于设计的高度超取样区段，同时选择程序代码或微程序代码驱动的处理元件用于较复杂但是较低速率的操作，例如计算适应性滤波器的分接头和／或响应所检测的事件例如本文所述的事件。
虽然已特别参考本发明的较佳实施例展示及描述本发明，但是本领域的技术人员了解可在不脱离本发明的精神及范围的情况下在其中进行上述及其他形式及细节的变化。

Claims (34)

1.一种个人语音设备，包括：
个人语音设备外壳；
传感器，其为安装在该外壳上用于重现语音信号，该语音信号包含用于对听者播放的源语音及用于对抗周围语音声音在该传感器的声输出中的影响的抗噪音信号的两者；
第一麦克风，其为安装在该外壳上用于当不被阻塞时提供指示所述周围语音声音的第一麦克风信号；
至少一个第二麦克风，其为安装在该外壳上用于当不被阻塞时提供指示所述周围语音声音的至少一个第二麦克风信号；及
处理电路，其实施具有塑形抗噪音信号的响应的适应性滤波器，其中该处理电路实施第一信号位准检测器用于检测低于截止频率的所述第一麦克风信号的第一分量的第一幅度以产生第一麦克风位准信号，和至少一个第二信号位准检测器用于检测低于所述截止频率的所述至少一个第二麦克风信号的第二分量的至少一个第二幅度以产生至少一个第二麦克风位准信号，且其中所述处理电路还比较所述第一麦克风位准信号和所述至少一个第二麦克风位准信号，并且其中该处理电路响应于确定在第一麦克风位准信号和至少一个第二麦克风位准信号之间的差值指示所述第一麦克风至少局部被阻塞，并且采取行动来阻止错误地产生抗噪音信号。
2.如权利要求1所述的个人语音设备，其中所述第一麦克风是提供指示周围语音声音的参考麦克风信号的参考麦克风，并且其中所述处理电路从参考麦克风信号产生抗噪音信号。
3.如权利要求2所述的个人语音设备，其中所述至少一个第二麦克风包括提供指示传感器的声音输出的误差麦克风信号的误差麦克风，其中所述处理电路因为穿过传感器的电声路径发生的改变，而利用所述误差麦克风信号校正所述抗噪音信号，并且其中所述处理电路确定在所述误差麦克风信号与所述参考麦克风信号之间的差值。
4.如权利要求3所述的个人语音设备，其中所述至少一个第二麦克风还包括提供用来捕获个人语音设备的用户的近端语音并且提供指示近端语音的语音信号的语音麦克风，并且其中所述处理电路响应于确定在存在于参考麦克风信号中的环境周围语音声音的第一位准、存在于误差麦克风信号中的周围语音声音的第二位准、以及存在于语音信号中的周围语音声音的第三 位准之间的差值指示参考麦克风或误差麦克风至少局部被阻塞来采取行动。
5.如权利要求1所述的个人语音设备，其中所述第一麦克风为提供指示传感器的声音输出的误差麦克风信号的误差麦克风，其中所述处理电路由于穿过传感器的电声路径而发生的改变，利用所述误差麦克风信号校正所述抗噪音信号。
6.如权利要求1所述的个人语音设备，其中处理电路通过静音抗噪音信号来采取行动。
7.如权利要求1所述的个人语音设备，其中处理电路通过迫使适应性滤波器的响应为已知固定响应来采取行动。
8.如权利要求1所述的个人语音设备，其中处理电路还滤波所述第一麦克风信号和所述至少一个第二麦克风信号以在所述第一信号位准检测器和所述至少一个第二信号位准检测器的输入仅保留在所述截止频率以下的频率，以确定所述第一麦克风至少局部被阻塞。
9.如权利要求8所述的个人语音设备，其中截止频率基本上等于100Hz。
10.如权利要求1所述的个人语音设备，其中个人语音设备是还包括作为下行链路语音信号用于接收源语音的收发器的无线电话。
11.如权利要求1所述的个人语音设备，其中个人语音设备是语音播放设备，其中声音语音是程序语音信号。
12.如权利要求1所述的个人语音设备，其中所述截止频率低于多路径相位差和反射可以在所述第一麦克风信号和第二麦克风信号中产生幅度差的频率。
13.一种用于阻止对具有适应性噪音消除的个人语音设备产生错误抗噪音的方法，所述方法包括：
利用传感器产生声音输出，该声音输出包括用于播放给听者的源语音和用于对抗周围语音声音在传感器的声音输出中的影响的抗噪音信号的两者；
用第一麦克风测量周围语音声音的第一测量；
用至少一个第二麦克风测量周围语音声音的第二测量；
第一检测低于截止频率的所述第一麦克风信号的第一分量的第一幅度来产生第一麦克风位准信号；
第二检测低于所述截止频率的所述至少一个第二麦克风信号的第二分量的至少一个第二幅度来产生至少一个第二麦克风位准信号；
比较所述第一麦克风位准信号和所述至少一个第二麦克风位准信号来确定在第一麦克风位准信号和至少一个第二麦克风位准信号之间的差值；
从所述确定所述差值的结果确定第一麦克风是否被阻塞；以及
响应于确定第一麦克风至少局部被阻塞来采取行动阻止错误地产生抗噪音信号。
14.如权利要求13所述的方法，其中所述第一麦克风是提供指示周围语音声音的参考麦克风信号的参考麦克风，并且其中所述方法还包括从参考麦克风信号产生抗噪音信号。
15.如权利要求14所述的方法，其中所述至少一个第二麦克风包括提供指示传感器的声音输出的误差麦克风信号的误差麦克风，其中所述方法还包括由于穿过传感器的电声路径改变而利用误差麦克风信号校正抗噪音信号，并且其中所述比较比较了误差麦克风信号与参考麦克风信号。
16.如权利要求15所述的方法，其中所述至少一个第二麦克风还包括提供用来捕获个人语音设备的用户的近端语音并且提供指示近端语音的语音信号的语音麦克风，并且其中响应于确定在存在于参考麦克风信号中的周围语音声音的第一位准、存在于误差麦克风信号中的周围语音声音的第二位准、以及存在于语音信号中的周围语音声音的第三位准之间的差值指示所述参考麦克风或所述误差麦克风至少局部被阻塞来采取行动。
17.如权利要求13所述的方法，其中所述第一麦克风为提供指示传感器的声音输出的误差麦克风信号的误差麦克风，其中所述方法还包括由于穿过传感器的电声路径发生的改变而利用误差麦克风信号校正抗噪音信号。
18.如权利要求13所述的方法，其中所述采取的行动静音抗噪音信号。
19.如权利要求13所述的方法，其中所述采取的行动迫使适应性滤波器的响应为已知固定响应。
20.如权利要求13所述的方法，其中所述比较还滤波所述第一麦克风信号和所述至少一个第二麦克风信号以在第一信号位准检测器和至少一个第二信号位准检测器的输入仅保留在所述截止频率以下的频率，以确定所述第一麦克风至少局部被阻塞。
21.如权利要求20所述的方法，其中截止频率基本上等于100Hz。
22.如权利要求13所述的方法，其中个人语音设备是无线电话，其中所述方法还包括接收源语音作为下行链路语音信号。
23.如权利要求13所述的方法，其中个人语音设备是语音播放设备， 其中声音语音是程序语音信号。
24.如权利要求20所述的方法，其中所述截止频率低于多路径相位差和反射可以在所述第一麦克风信号和第二麦克风信号中产生幅度差的频率。
25.一种用于执行个人语音设备至少一部分的集成电路，包括
输出，用于提供信号给传感器，该信号包含用于对听者播放的源语音及用于对抗周围语音声音在该传感器的声音输出中的影响的抗噪音信号的两者；
第一麦克风输入，用于从第一麦克风接收指示所述周围语音声音的第一麦克风信号；
至少一个第二麦克风输入，用于从至少一个第二麦克风接收指示所述周围语音声音的第二麦克风信号；及
处理电路，其实施具有塑形抗噪音信号的响应的适应性滤波器，其中该处理电路实施第一信号位准检测器用于检测低于截止频率的所述第一麦克风信号的第一分量的第一幅度以产生第一麦克风位准信号，和至少一个第二信号位准检测器用于检测低于所述截止频率的所述至少一个第二麦克风信号的第二分量的至少一个第二幅度以产生至少一个第二麦克风位准信号，且其中所述处理电路还比较所述第一麦克风位准信号和所述至少一个第二麦克风位准信号，并且其中该处理电路响应于确定在第一麦克风位准信号和至少一个第二麦克风位准信号之间的差值，指示第一麦克风至少局部被阻塞，并且采取行动来阻止错误地产生抗噪音信号。
26.如权利要求25所述的集成电路，其中所述第一麦克风信号是指示周围语音声音的参考麦克风信号，并且其中处理电路从参考麦克风信号产生抗噪音信号。
27.如权利要求26所述的集成电路，其中所述至少一个第二麦克风信号包括指示传感器的声音输出的误差麦克风信号，其中处理电路由于穿过传感器的电声路径发生的改变，利用误差麦克风信号校正抗噪音信号，并且其中处理电路确定在误差麦克风信号与参考麦克风信号之间的差值。
28.如权利要求27所述的集成电路，其中所述至少一个第二麦克风信号还包括指示近端语音的语音信号，并且其中所述处理电路响应于确定在存在于参考麦克风信号中的周围语音声音的第一位准、存在于误差麦克风信号中的周围语音声音的第二位准、以及存在于语音信号中的周围语音声音的第三位准之间的差值指示所述第一麦克风或所述至少一个第二麦克风至少局 部被阻塞来采取行动。
29.如权利要求25所述的集成电路，其中所述第一麦克风为提供指示传感器的声音输出的误差麦克风信号的误差麦克风，其中所述处理电路由于穿过传感器的电声路径发生的改变而利用误差麦克风信号校正抗噪音信号。
30.如权利要求25所述的集成电路，其中处理电路通过静音抗噪音信号来采取行动。
31.如权利要求25所述的集成电路，其中处理电路通过迫使适应性滤波器的响应为已知固定响应来采取行动。
32.如权利要求25所述的集成电路，其中所述处理电路还滤波所述第一麦克风信号和所述至少一个第二麦克风信号以在所述第一信号位准检测器和所述至少一个第二信号位准检测器的输入仅保留在所述截止频率以下的频率，以确定所述第一麦克风至少局部被阻塞。
33.如权利要求32所述的集成电路，其中截止频率基本上等于100Hz。
34.如权利要求33所述的集成电路，其中所述截止频率低于多路径相位差和反射可以在所述第一麦克风信号和第二麦克风信号中产生幅度差的频率。
CN201280038329.6A 2011-06-03 2012-05-18 在个人语音设备中的麦克风覆盖检测 Active CN103733254B (zh)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US201161493162P 2011-06-03 2011-06-03
US61/493,162 2011-06-03
US13/249,711 2011-09-30
US13/249,711 US8958571B2 (en) 2011-06-03 2011-09-30 MIC covering detection in personal audio devices
PCT/US2012/038510 WO2012166386A2 (en) 2011-06-03 2012-05-18 Mic covering detection in personal audio devices

Publications (2)

Publication Number Publication Date
CN103733254A CN103733254A (zh) 2014-04-16
CN103733254B true CN103733254B (zh) 2018-01-02

Family

ID=46168646

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201280038329.6A Active CN103733254B (zh) 2011-06-03 2012-05-18 在个人语音设备中的麦克风覆盖检测

Country Status (6)

Country Link
US (2) US8958571B2 (zh)
EP (1) EP2715719B1 (zh)
JP (1) JP5955949B2 (zh)
KR (1) KR101918912B1 (zh)
CN (1) CN103733254B (zh)
WO (1) WO2012166386A2 (zh)

Families Citing this family (142)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9247346B2 (en) 2007-12-07 2016-01-26 Northern Illinois Research Foundation Apparatus, system and method for noise cancellation and communication for incubators and related devices
US8908877B2 (en) 2010-12-03 2014-12-09 Cirrus Logic, Inc. Ear-coupling detection and adjustment of adaptive response in noise-canceling in personal audio devices
US9142207B2 (en) 2010-12-03 2015-09-22 Cirrus Logic, Inc. Oversight control of an adaptive noise canceler in a personal audio device
US8958571B2 (en) 2011-06-03 2015-02-17 Cirrus Logic, Inc. MIC covering detection in personal audio devices
US9076431B2 (en) 2011-06-03 2015-07-07 Cirrus Logic, Inc. Filter architecture for an adaptive noise canceler in a personal audio device
US9824677B2 (en) 2011-06-03 2017-11-21 Cirrus Logic, Inc. Bandlimiting anti-noise in personal audio devices having adaptive noise cancellation (ANC)
US9214150B2 (en) 2011-06-03 2015-12-15 Cirrus Logic, Inc. Continuous adaptation of secondary path adaptive response in noise-canceling personal audio devices
US8848936B2 (en) 2011-06-03 2014-09-30 Cirrus Logic, Inc. Speaker damage prevention in adaptive noise-canceling personal audio devices
US8948407B2 (en) 2011-06-03 2015-02-03 Cirrus Logic, Inc. Bandlimiting anti-noise in personal audio devices having adaptive noise cancellation (ANC)
US9318094B2 (en) 2011-06-03 2016-04-19 Cirrus Logic, Inc. Adaptive noise canceling architecture for a personal audio device
US9325821B1 (en) * 2011-09-30 2016-04-26 Cirrus Logic, Inc. Sidetone management in an adaptive noise canceling (ANC) system including secondary path modeling
EP2605239A2 (en) * 2011-12-16 2013-06-19 Sony Ericsson Mobile Communications AB Method and arrangement for noise reduction
JP2013176002A (ja) * 2012-02-27 2013-09-05 Xacti Corp 電子カメラ
US9142205B2 (en) 2012-04-26 2015-09-22 Cirrus Logic, Inc. Leakage-modeling adaptive noise canceling for earspeakers
US9014387B2 (en) 2012-04-26 2015-04-21 Cirrus Logic, Inc. Coordinated control of adaptive noise cancellation (ANC) among earspeaker channels
US9319781B2 (en) 2012-05-10 2016-04-19 Cirrus Logic, Inc. Frequency and direction-dependent ambient sound handling in personal audio devices having adaptive noise cancellation (ANC)
US9082387B2 (en) 2012-05-10 2015-07-14 Cirrus Logic, Inc. Noise burst adaptation of secondary path adaptive response in noise-canceling personal audio devices
US9318090B2 (en) 2012-05-10 2016-04-19 Cirrus Logic, Inc. Downlink tone detection and adaptation of a secondary path response model in an adaptive noise canceling system
US9076427B2 (en) 2012-05-10 2015-07-07 Cirrus Logic, Inc. Error-signal content controlled adaptation of secondary and leakage path models in noise-canceling personal audio devices
US9123321B2 (en) 2012-05-10 2015-09-01 Cirrus Logic, Inc. Sequenced adaptation of anti-noise generator response and secondary path response in an adaptive noise canceling system
US9100756B2 (en) * 2012-06-08 2015-08-04 Apple Inc. Microphone occlusion detector
US9966067B2 (en) 2012-06-08 2018-05-08 Apple Inc. Audio noise estimation and audio noise reduction using multiple microphones
US9560446B1 (en) * 2012-06-27 2017-01-31 Amazon Technologies, Inc. Sound source locator with distributed microphone array
US9779731B1 (en) * 2012-08-20 2017-10-03 Amazon Technologies, Inc. Echo cancellation based on shared reference signals
KR101968920B1 (ko) * 2012-08-23 2019-04-15 삼성전자주식회사 음성신호의 세기를 감지하여 마이크를 선택하는 전자 장치 및 방법
KR102062197B1 (ko) * 2012-09-14 2020-01-03 로베르트 보쉬 게엠베하 음향 포트 폐색을 이용한 장치 검사
US9532139B1 (en) 2012-09-14 2016-12-27 Cirrus Logic, Inc. Dual-microphone frequency amplitude response self-calibration
US9240176B2 (en) * 2013-02-08 2016-01-19 GM Global Technology Operations LLC Active noise control system and method
US9107010B2 (en) 2013-02-08 2015-08-11 Cirrus Logic, Inc. Ambient noise root mean square (RMS) detector
US9369798B1 (en) 2013-03-12 2016-06-14 Cirrus Logic, Inc. Internal dynamic range control in an adaptive noise cancellation (ANC) system
US9106989B2 (en) * 2013-03-13 2015-08-11 Cirrus Logic, Inc. Adaptive-noise canceling (ANC) effectiveness estimation and correction in a personal audio device
US9414150B2 (en) 2013-03-14 2016-08-09 Cirrus Logic, Inc. Low-latency multi-driver adaptive noise canceling (ANC) system for a personal audio device
US9215749B2 (en) 2013-03-14 2015-12-15 Cirrus Logic, Inc. Reducing an acoustic intensity vector with adaptive noise cancellation with two error microphones
US9635480B2 (en) 2013-03-15 2017-04-25 Cirrus Logic, Inc. Speaker impedance monitoring
US9467776B2 (en) 2013-03-15 2016-10-11 Cirrus Logic, Inc. Monitoring of speaker impedance to detect pressure applied between mobile device and ear
US9502020B1 (en) 2013-03-15 2016-11-22 Cirrus Logic, Inc. Robust adaptive noise canceling (ANC) in a personal audio device
US9208771B2 (en) 2013-03-15 2015-12-08 Cirrus Logic, Inc. Ambient noise-based adaptation of secondary path adaptive response in noise-canceling personal audio devices
WO2014149050A1 (en) * 2013-03-21 2014-09-25 Nuance Communications, Inc. System and method for identifying suboptimal microphone performance
US10206032B2 (en) 2013-04-10 2019-02-12 Cirrus Logic, Inc. Systems and methods for multi-mode adaptive noise cancellation for audio headsets
US9066176B2 (en) 2013-04-15 2015-06-23 Cirrus Logic, Inc. Systems and methods for adaptive noise cancellation including dynamic bias of coefficients of an adaptive noise cancellation system
US9462376B2 (en) * 2013-04-16 2016-10-04 Cirrus Logic, Inc. Systems and methods for hybrid adaptive noise cancellation
US9460701B2 (en) 2013-04-17 2016-10-04 Cirrus Logic, Inc. Systems and methods for adaptive noise cancellation by biasing anti-noise level
US9478210B2 (en) 2013-04-17 2016-10-25 Cirrus Logic, Inc. Systems and methods for hybrid adaptive noise cancellation
US9578432B1 (en) 2013-04-24 2017-02-21 Cirrus Logic, Inc. Metric and tool to evaluate secondary path design in adaptive noise cancellation systems
US9264808B2 (en) 2013-06-14 2016-02-16 Cirrus Logic, Inc. Systems and methods for detection and cancellation of narrow-band noise
US9392364B1 (en) 2013-08-15 2016-07-12 Cirrus Logic, Inc. Virtual microphone for adaptive noise cancellation in personal audio devices
US9666176B2 (en) 2013-09-13 2017-05-30 Cirrus Logic, Inc. Systems and methods for adaptive noise cancellation by adaptively shaping internal white noise to train a secondary path
US9620101B1 (en) 2013-10-08 2017-04-11 Cirrus Logic, Inc. Systems and methods for maintaining playback fidelity in an audio system with adaptive noise cancellation
US9704472B2 (en) 2013-12-10 2017-07-11 Cirrus Logic, Inc. Systems and methods for sharing secondary path information between audio channels in an adaptive noise cancellation system
US10382864B2 (en) 2013-12-10 2019-08-13 Cirrus Logic, Inc. Systems and methods for providing adaptive playback equalization in an audio device
US10219071B2 (en) 2013-12-10 2019-02-26 Cirrus Logic, Inc. Systems and methods for bandlimiting anti-noise in personal audio devices having adaptive noise cancellation
KR20150070596A (ko) * 2013-12-17 2015-06-25 삼성전기주식회사 광학식 손떨림 보정 장치의 소음 제거를 위한 장치 및 방법
US10147441B1 (en) 2013-12-19 2018-12-04 Amazon Technologies, Inc. Voice controlled system
US9524735B2 (en) 2014-01-31 2016-12-20 Apple Inc. Threshold adaptation in two-channel noise estimation and voice activity detection
US9293128B2 (en) * 2014-02-22 2016-03-22 Apple Inc. Active noise control with compensation for acoustic leak in personal listening devices
US9369557B2 (en) 2014-03-05 2016-06-14 Cirrus Logic, Inc. Frequency-dependent sidetone calibration
US9479860B2 (en) 2014-03-07 2016-10-25 Cirrus Logic, Inc. Systems and methods for enhancing performance of audio transducer based on detection of transducer status
US9648410B1 (en) 2014-03-12 2017-05-09 Cirrus Logic, Inc. Control of audio output of headphone earbuds based on the environment around the headphone earbuds
US9319784B2 (en) 2014-04-14 2016-04-19 Cirrus Logic, Inc. Frequency-shaped noise-based adaptation of secondary path adaptive response in noise-canceling personal audio devices
US9467779B2 (en) 2014-05-13 2016-10-11 Apple Inc. Microphone partial occlusion detector
US9609416B2 (en) 2014-06-09 2017-03-28 Cirrus Logic, Inc. Headphone responsive to optical signaling
US10181315B2 (en) * 2014-06-13 2019-01-15 Cirrus Logic, Inc. Systems and methods for selectively enabling and disabling adaptation of an adaptive noise cancellation system
JP6454495B2 (ja) * 2014-08-19 2019-01-16 ルネサスエレクトロニクス株式会社 半導体装置及びその故障検出方法
US9478212B1 (en) 2014-09-03 2016-10-25 Cirrus Logic, Inc. Systems and methods for use of adaptive secondary path estimate to control equalization in an audio device
EP2996352B1 (en) * 2014-09-15 2019-04-17 Nxp B.V. Audio system and method using a loudspeaker output signal for wind noise reduction
US9552805B2 (en) 2014-12-19 2017-01-24 Cirrus Logic, Inc. Systems and methods for performance and stability control for feedback adaptive noise cancellation
GB2533781A (en) 2014-12-29 2016-07-06 Nokia Technologies Oy Method and apparatus for controlling an application
WO2016189285A1 (en) * 2015-05-22 2016-12-01 Cirrus Logic International Semiconductor Limited Adaptive receiver
KR20180044324A (ko) 2015-08-20 2018-05-02 시러스 로직 인터내셔널 세미컨덕터 리미티드 피드백 적응적 잡음 소거(anc) 제어기 및 고정 응답 필터에 의해 부분적으로 제공되는 피드백 응답을 갖는 방법
US9578415B1 (en) 2015-08-21 2017-02-21 Cirrus Logic, Inc. Hybrid adaptive noise cancellation system with filtered error microphone signal
US9947316B2 (en) 2016-02-22 2018-04-17 Sonos, Inc. Voice control of a media playback system
US10264030B2 (en) 2016-02-22 2019-04-16 Sonos, Inc. Networked microphone device control
US10095470B2 (en) 2016-02-22 2018-10-09 Sonos, Inc. Audio response playback
US9965247B2 (en) 2016-02-22 2018-05-08 Sonos, Inc. Voice controlled media playback system based on user profile
US10509626B2 (en) 2016-02-22 2019-12-17 Sonos, Inc Handling of loss of pairing between networked devices
US10097919B2 (en) 2016-02-22 2018-10-09 Sonos, Inc. Music service selection
US10013966B2 (en) 2016-03-15 2018-07-03 Cirrus Logic, Inc. Systems and methods for adaptive active noise cancellation for multiple-driver personal audio device
US9978390B2 (en) 2016-06-09 2018-05-22 Sonos, Inc. Dynamic player selection for audio signal processing
JP2018011238A (ja) * 2016-07-15 2018-01-18 パナソニックＩｐマネジメント株式会社 マイクロフォンユニットとこれを使用した騒音低減装置
US10152969B2 (en) 2016-07-15 2018-12-11 Sonos, Inc. Voice detection by multiple devices
US10482899B2 (en) 2016-08-01 2019-11-19 Apple Inc. Coordination of beamformers for noise estimation and noise suppression
US10115400B2 (en) 2016-08-05 2018-10-30 Sonos, Inc. Multiple voice services
US9942678B1 (en) 2016-09-27 2018-04-10 Sonos, Inc. Audio playback settings for voice interaction
US9743204B1 (en) 2016-09-30 2017-08-22 Sonos, Inc. Multi-orientation playback device microphones
US10181323B2 (en) 2016-10-19 2019-01-15 Sonos, Inc. Arbitration-based voice recognition
JP7066705B2 (ja) * 2016-10-24 2022-05-13 アバネラ コーポレイション ヘッドフォンオフイヤー検知
US10475449B2 (en) 2017-08-07 2019-11-12 Sonos, Inc. Wake-word detection suppression
US10048930B1 (en) 2017-09-08 2018-08-14 Sonos, Inc. Dynamic computation of system response volume
US10446165B2 (en) 2017-09-27 2019-10-15 Sonos, Inc. Robust short-time fourier transform acoustic echo cancellation during audio playback
US10621981B2 (en) 2017-09-28 2020-04-14 Sonos, Inc. Tone interference cancellation
US10482868B2 (en) 2017-09-28 2019-11-19 Sonos, Inc. Multi-channel acoustic echo cancellation
US10466962B2 (en) 2017-09-29 2019-11-05 Sonos, Inc. Media playback system with voice assistance
US10880650B2 (en) 2017-12-10 2020-12-29 Sonos, Inc. Network microphone devices with automatic do not disturb actuation capabilities
US10818290B2 (en) 2017-12-11 2020-10-27 Sonos, Inc. Home graph
GB201804129D0 (en) * 2017-12-15 2018-05-02 Cirrus Logic Int Semiconductor Ltd Proximity sensing
US11061799B1 (en) 2017-12-28 2021-07-13 Cerner Innovation, Inc. Log analysis application
US11343614B2 (en) 2018-01-31 2022-05-24 Sonos, Inc. Device designation of playback and network microphone device arrangements
CN111902861A (zh) * 2018-02-01 2020-11-06 思睿逻辑国际半导体有限公司 用于校准和测试主动噪声消除(anc)系统的系统和方法
EP3528241B1 (en) * 2018-02-20 2021-01-20 Panasonic Intellectual Property Management Co., Ltd. Noise reduction device, noise reduction system, and noise reduction control method
US10418021B2 (en) 2018-02-21 2019-09-17 Panasonic Intellectual Property Management Co., Ltd. Noise reduction device, noise reduction system, and noise reduction control method
US11175880B2 (en) 2018-05-10 2021-11-16 Sonos, Inc. Systems and methods for voice-assisted media content selection
US10847178B2 (en) 2018-05-18 2020-11-24 Sonos, Inc. Linear filtering for noise-suppressed speech detection
US10959029B2 (en) * 2018-05-25 2021-03-23 Sonos, Inc. Determining and adapting to changes in microphone performance of playback devices
US10681460B2 (en) 2018-06-28 2020-06-09 Sonos, Inc. Systems and methods for associating playback devices with voice assistant services
CN108650595B (zh) * 2018-07-24 2020-07-17 Oppo（重庆）智能科技有限公司 堵孔处理方法、装置、电子设备及计算机可读存储介质
US11076035B2 (en) 2018-08-28 2021-07-27 Sonos, Inc. Do not disturb feature for audio notifications
US10461710B1 (en) 2018-08-28 2019-10-29 Sonos, Inc. Media playback system with maximum volume setting
US10587430B1 (en) 2018-09-14 2020-03-10 Sonos, Inc. Networked devices, systems, and methods for associating playback devices based on sound codes
US11024331B2 (en) 2018-09-21 2021-06-01 Sonos, Inc. Voice detection optimization using sound metadata
US10811015B2 (en) 2018-09-25 2020-10-20 Sonos, Inc. Voice detection optimization based on selected voice assistant service
US11100923B2 (en) 2018-09-28 2021-08-24 Sonos, Inc. Systems and methods for selective wake word detection using neural network models
US10692518B2 (en) 2018-09-29 2020-06-23 Sonos, Inc. Linear filtering for noise-suppressed speech detection via multiple network microphone devices
US11899519B2 (en) 2018-10-23 2024-02-13 Sonos, Inc. Multiple stage network microphone device with reduced power consumption and processing load
EP3654249A1 (en) 2018-11-15 2020-05-20 Snips Dilated convolutions and gating for efficient keyword spotting
US11183183B2 (en) 2018-12-07 2021-11-23 Sonos, Inc. Systems and methods of operating media playback systems having multiple voice assistant services
US11132989B2 (en) 2018-12-13 2021-09-28 Sonos, Inc. Networked microphone devices, systems, and methods of localized arbitration
US10602268B1 (en) 2018-12-20 2020-03-24 Sonos, Inc. Optimization of network microphone devices using noise classification
KR102569365B1 (ko) * 2018-12-27 2023-08-22 삼성전자주식회사 가전기기 및 이의 음성 인식 방법
US11315556B2 (en) 2019-02-08 2022-04-26 Sonos, Inc. Devices, systems, and methods for distributed voice processing by transmitting sound data associated with a wake word to an appropriate device for identification
US10867604B2 (en) 2019-02-08 2020-12-15 Sonos, Inc. Devices, systems, and methods for distributed voice processing
US11120794B2 (en) 2019-05-03 2021-09-14 Sonos, Inc. Voice assistant persistence across multiple network microphone devices
US11200894B2 (en) 2019-06-12 2021-12-14 Sonos, Inc. Network microphone device with command keyword eventing
US10586540B1 (en) 2019-06-12 2020-03-10 Sonos, Inc. Network microphone device with command keyword conditioning
US11361756B2 (en) 2019-06-12 2022-06-14 Sonos, Inc. Conditional wake word eventing based on environment
US10871943B1 (en) 2019-07-31 2020-12-22 Sonos, Inc. Noise classification for event detection
US11138975B2 (en) 2019-07-31 2021-10-05 Sonos, Inc. Locally distributed keyword detection
US11138969B2 (en) 2019-07-31 2021-10-05 Sonos, Inc. Locally distributed keyword detection
US11189286B2 (en) 2019-10-22 2021-11-30 Sonos, Inc. VAS toggle based on device orientation
US11200900B2 (en) 2019-12-20 2021-12-14 Sonos, Inc. Offline voice control
US11562740B2 (en) 2020-01-07 2023-01-24 Sonos, Inc. Voice verification for media playback
US11556307B2 (en) 2020-01-31 2023-01-17 Sonos, Inc. Local voice data processing
KR20210100368A (ko) 2020-02-06 2021-08-17 삼성전자주식회사 전자장치 및 그 제어방법
US11308958B2 (en) 2020-02-07 2022-04-19 Sonos, Inc. Localized wakeword verification
US11482224B2 (en) 2020-05-20 2022-10-25 Sonos, Inc. Command keywords with input detection windowing
US11308962B2 (en) 2020-05-20 2022-04-19 Sonos, Inc. Input detection windowing
US11727919B2 (en) 2020-05-20 2023-08-15 Sonos, Inc. Memory allocation for keyword spotting engines
US11698771B2 (en) 2020-08-25 2023-07-11 Sonos, Inc. Vocal guidance engines for playback devices
US11551700B2 (en) 2021-01-25 2023-01-10 Sonos, Inc. Systems and methods for power-efficient keyword detection
TWI790718B (zh) * 2021-08-19 2023-01-21 宏碁股份有限公司 會議終端及用於會議的回音消除方法
US11589154B1 (en) * 2021-08-25 2023-02-21 Bose Corporation Wearable audio device zero-crossing based parasitic oscillation detection
CN113891228A (zh) * 2021-09-24 2022-01-04 珠海格力电器股份有限公司 麦克风故障检测方法及装置、控制设备、空调、存储介质
US11847200B2 (en) * 2022-03-29 2023-12-19 Cirrus Logic Inc. Methods and apparatus for system identification

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101911730A (zh) * 2008-01-31 2010-12-08 高通股份有限公司 向用户发信号通知麦克风遮盖

Family Cites Families (390)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4020567A (en) 1973-01-11 1977-05-03 Webster Ronald L Method and stuttering therapy apparatus
JPS5271502A (en) 1975-12-09 1977-06-15 Nippon Steel Corp Coke ovens
US4352962A (en) 1980-06-27 1982-10-05 Reliance Electric Company Tone responsive disabling circuit
US4583615A (en) 1982-02-22 1986-04-22 Maurice Amram Method and apparatus for controlling noise
JPS5952911A (ja) 1982-09-20 1984-03-27 Nec Corp トランスバ−サル・フイルタ
JP2598483B2 (ja) 1988-09-05 1997-04-09 日立プラント建設株式会社 電子消音システム
DE3840433A1 (de) 1988-12-01 1990-06-07 Philips Patentverwaltung Echokompensator
DK45889D0 (da) 1989-02-01 1989-02-01 Medicoteknisk Inst Fremgangsmaade til hoereapparattilpasning
US4926464A (en) 1989-03-03 1990-05-15 Telxon Corporation Telephone communication apparatus and method having automatic selection of receiving mode
US5117461A (en) 1989-08-10 1992-05-26 Mnc, Inc. Electroacoustic device for hearing needs including noise cancellation
US5259033A (en) 1989-08-30 1993-11-02 Gn Danavox As Hearing aid having compensation for acoustic feedback
JPH03162099A (ja) 1989-11-20 1991-07-12 Sony Corp ヘッドホン装置
JPH10294646A (ja) 1990-02-16 1998-11-04 Sony Corp サンプリングレート変換装置
GB9003938D0 (en) 1990-02-21 1990-04-18 Ross Colin F Noise reducing system
US5021753A (en) 1990-08-03 1991-06-04 Motorola, Inc. Splatter controlled amplifier
US5117401A (en) * 1990-08-16 1992-05-26 Hughes Aircraft Company Active adaptive noise canceller without training mode
US5550925A (en) 1991-01-07 1996-08-27 Canon Kabushiki Kaisha Sound processing device
JP3471370B2 (ja) * 1991-07-05 2003-12-02 本田技研工業株式会社 能動振動制御装置
JPH0522391A (ja) 1991-07-10 1993-01-29 Sony Corp 音声マスキング装置
US5809152A (en) 1991-07-11 1998-09-15 Hitachi, Ltd. Apparatus for reducing noise in a closed space having divergence detector
SE9102333D0 (sv) 1991-08-12 1991-08-12 Jiri Klokocka Foerfarande och anordning foer digital filtrering
US5548681A (en) 1991-08-13 1996-08-20 Kabushiki Kaisha Toshiba Speech dialogue system for realizing improved communication between user and system
JP2939017B2 (ja) 1991-08-30 1999-08-25 日産自動車株式会社 能動型騒音制御装置
JP2882170B2 (ja) 1992-03-19 1999-04-12 日産自動車株式会社 能動型騒音制御装置
US5347586A (en) 1992-04-28 1994-09-13 Westinghouse Electric Corporation Adaptive system for controlling noise generated by or emanating from a primary noise source
US5321759A (en) * 1992-04-29 1994-06-14 General Motors Corporation Active noise control system for attenuating engine generated noise
US5359662A (en) * 1992-04-29 1994-10-25 General Motors Corporation Active noise control system
US5251263A (en) 1992-05-22 1993-10-05 Andrea Electronics Corporation Adaptive noise cancellation and speech enhancement system and apparatus therefor
JP3402331B2 (ja) 1992-06-08 2003-05-06 ソニー株式会社 雑音低減装置
JPH066246A (ja) 1992-06-18 1994-01-14 Sony Corp 音声通信端末装置
NO175798C (no) 1992-07-22 1994-12-07 Sinvent As Fremgangsmåte og anordning til aktiv stöydemping i et lokalt område
US5278913A (en) * 1992-07-28 1994-01-11 Nelson Industries, Inc. Active acoustic attenuation system with power limiting
DE69229484T2 (de) 1992-09-21 2000-02-03 Noise Cancellation Tech Datenabtastungsfilter mit niedriger verzoegerung
JP2924496B2 (ja) * 1992-09-30 1999-07-26 松下電器産業株式会社 騒音制御装置
KR0130635B1 (ko) * 1992-10-14 1998-04-09 모리시타 요이찌 연소 장치의 적응 소음 시스템
GB2271909B (en) 1992-10-21 1996-05-22 Lotus Car Adaptive control system
GB9222103D0 (en) 1992-10-21 1992-12-02 Lotus Car Adaptive control system
US5732143A (en) 1992-10-29 1998-03-24 Andrea Electronics Corp. Noise cancellation apparatus
JP2929875B2 (ja) 1992-12-21 1999-08-03 日産自動車株式会社 能動型騒音制御装置
JP3272438B2 (ja) 1993-02-01 2002-04-08 芳男 山崎 信号処理システムおよび処理方法
US5386477A (en) 1993-02-11 1995-01-31 Digisonix, Inc. Active acoustic control system matching model reference
US5465413A (en) * 1993-03-05 1995-11-07 Trimble Navigation Limited Adaptive noise cancellation
JP3340496B2 (ja) 1993-03-09 2002-11-05 富士通株式会社 アクティブ騒音制御システムの伝達特性の推定方法
US5909498A (en) 1993-03-25 1999-06-01 Smith; Jerry R. Transducer device for use with communication apparatus
US5481615A (en) 1993-04-01 1996-01-02 Noise Cancellation Technologies, Inc. Audio reproduction system
US5425105A (en) 1993-04-27 1995-06-13 Hughes Aircraft Company Multiple adaptive filter active noise canceller
JPH0798592A (ja) 1993-06-14 1995-04-11 Mazda Motor Corp 能動的振動制御装置及びその製造方法
US7103188B1 (en) * 1993-06-23 2006-09-05 Owen Jones Variable gain active noise cancelling system with improved residual noise sensing
AU7355594A (en) 1993-06-23 1995-01-17 Noise Cancellation Technologies, Inc. Variable gain active noise cancellation system with improved residual noise sensing
US5469510A (en) 1993-06-28 1995-11-21 Ford Motor Company Arbitration adjustment for acoustic reproduction systems
JPH07104769A (ja) 1993-10-07 1995-04-21 Sharp Corp 能動制御装置
JP3141674B2 (ja) * 1994-02-25 2001-03-05 ソニー株式会社 騒音低減ヘッドホン装置
JPH07248778A (ja) 1994-03-09 1995-09-26 Fujitsu Ltd 適応フィルタの係数更新方法
US5563819A (en) 1994-03-31 1996-10-08 Cirrus Logic, Inc. Fast high precision discrete-time analog finite impulse response filter
JPH07325588A (ja) 1994-06-02 1995-12-12 Matsushita Seiko Co Ltd 消音装置
JPH07334169A (ja) 1994-06-07 1995-12-22 Matsushita Electric Ind Co Ltd システム同定装置
JP3385725B2 (ja) 1994-06-21 2003-03-10 ソニー株式会社 映像を伴うオーディオ再生装置
US5586190A (en) 1994-06-23 1996-12-17 Digisonix, Inc. Active adaptive control system with weight update selective leakage
JPH0823373A (ja) 1994-07-08 1996-01-23 Kokusai Electric Co Ltd 通話器回路
US5796849A (en) 1994-11-08 1998-08-18 Bolt, Beranek And Newman Inc. Active noise and vibration control system accounting for time varying plant, using residual signal to create probe signal
US5815582A (en) 1994-12-02 1998-09-29 Noise Cancellation Technologies, Inc. Active plus selective headset
US5633795A (en) 1995-01-06 1997-05-27 Digisonix, Inc. Adaptive tonal control system with constrained output and adaptation
US5852667A (en) 1995-07-03 1998-12-22 Pan; Jianhua Digital feed-forward active noise control system
JP2843278B2 (ja) 1995-07-24 1999-01-06 松下電器産業株式会社 騒音制御型送受話器
US5699437A (en) 1995-08-29 1997-12-16 United Technologies Corporation Active noise control system using phased-array sensors
US6434246B1 (en) 1995-10-10 2002-08-13 Gn Resound As Apparatus and methods for combining audio compression and feedback cancellation in a hearing aid
GB2307617B (en) 1995-11-24 2000-01-12 Nokia Mobile Phones Ltd Telephones with talker sidetone
DE69631955T2 (de) * 1995-12-15 2005-01-05 Koninklijke Philips Electronics N.V. Verfahren und schaltung zur adaptiven rauschunterdrückung und sendeempfänger
US5706344A (en) 1996-03-29 1998-01-06 Digisonix, Inc. Acoustic echo cancellation in an integrated audio and telecommunication system
US6850617B1 (en) 1999-12-17 2005-02-01 National Semiconductor Corporation Telephone receiver circuit with dynamic sidetone signal generator controlled by voice activity detection
US5832095A (en) * 1996-10-18 1998-11-03 Carrier Corporation Noise canceling system
JPH10190589A (ja) 1996-12-17 1998-07-21 Texas Instr Inc <Ti> 適応ノイズ制御システムおよびオンラインフィードバック経路モデル化およびオンライン２次経路モデル化方法
US5991418A (en) 1996-12-17 1999-11-23 Texas Instruments Incorporated Off-line path modeling circuitry and method for off-line feedback path modeling and off-line secondary path modeling
US6185300B1 (en) 1996-12-31 2001-02-06 Ericsson Inc. Echo canceler for use in communications system
JPH10247088A (ja) 1997-03-06 1998-09-14 Oki Electric Ind Co Ltd 適応型能動騒音制御装置
JP4189042B2 (ja) 1997-03-14 2008-12-03 パナソニック電工株式会社 拡声通話機
US6181801B1 (en) 1997-04-03 2001-01-30 Resound Corporation Wired open ear canal earpiece
US6445799B1 (en) 1997-04-03 2002-09-03 Gn Resound North America Corporation Noise cancellation earpiece
JPH10294989A (ja) 1997-04-18 1998-11-04 Matsushita Electric Ind Co Ltd 騒音制御ヘッドセット
US6078672A (en) 1997-05-06 2000-06-20 Virginia Tech Intellectual Properties, Inc. Adaptive personal active noise system
JP3236242B2 (ja) 1997-05-12 2001-12-10 沖電気工業株式会社 エコーキャンセラ装置
JP3541339B2 (ja) * 1997-06-26 2004-07-07 富士通株式会社 マイクロホンアレイ装置
WO1999005998A1 (en) * 1997-07-29 1999-02-11 Telex Communications, Inc. Active noise cancellation aircraft headset system
TW392416B (en) 1997-08-18 2000-06-01 Noise Cancellation Tech Noise cancellation system for active headsets
GB9717816D0 (en) 1997-08-21 1997-10-29 Sec Dep For Transport The Telephone handset noise supression
FI973455A (fi) 1997-08-22 1999-02-23 Nokia Mobile Phones Ltd Menetelmä ja järjestely melun vaimentamiseksi tilassa muodostamalla vastamelua
US6219427B1 (en) 1997-11-18 2001-04-17 Gn Resound As Feedback cancellation improvements
US6282176B1 (en) 1998-03-20 2001-08-28 Cirrus Logic, Inc. Full-duplex speakerphone circuit including a supplementary echo suppressor
WO1999053476A1 (fr) 1998-04-15 1999-10-21 Fujitsu Limited Dispositif antibruit actif
JP2955855B1 (ja) 1998-04-24 1999-10-04 ティーオーエー株式会社 能動型雑音除去装置
EP0973151B8 (en) 1998-07-16 2009-02-25 Panasonic Corporation Noise control system
JP2000089770A (ja) 1998-07-16 2000-03-31 Matsushita Electric Ind Co Ltd 騒音制御装置
US6304179B1 (en) 1999-02-27 2001-10-16 Congress Financial Corporation Ultrasonic occupant position sensing system
US6434247B1 (en) 1999-07-30 2002-08-13 Gn Resound A/S Feedback cancellation apparatus and methods utilizing adaptive reference filter mechanisms
ATE289152T1 (de) 1999-09-10 2005-02-15 Starkey Lab Inc Audiosignalverarbeitung
US7016504B1 (en) 1999-09-21 2006-03-21 Insonus Medical, Inc. Personal hearing evaluator
GB9922654D0 (en) * 1999-09-27 1999-11-24 Jaber Marwan Noise suppression system
US6526140B1 (en) * 1999-11-03 2003-02-25 Tellabs Operations, Inc. Consolidated voice activity detection and noise estimation
US6650701B1 (en) 2000-01-14 2003-11-18 Vtel Corporation Apparatus and method for controlling an acoustic echo canceler
US6606382B2 (en) 2000-01-27 2003-08-12 Qualcomm Incorporated System and method for implementation of an echo canceller
GB2360165A (en) 2000-03-07 2001-09-12 Central Research Lab Ltd A method of improving the audibility of sound from a loudspeaker located close to an ear
US6766292B1 (en) 2000-03-28 2004-07-20 Tellabs Operations, Inc. Relative noise ratio weighting techniques for adaptive noise cancellation
JP2002010355A (ja) 2000-06-26 2002-01-11 Casio Comput Co Ltd 通信装置、及び携帯電話機
US6542436B1 (en) 2000-06-30 2003-04-01 Nokia Corporation Acoustical proximity detection for mobile terminals and other devices
SG106582A1 (en) 2000-07-05 2004-10-29 Univ Nanyang Active noise control system with on-line secondary path modeling
US7003093B2 (en) 2000-09-08 2006-02-21 Intel Corporation Tone detection for integrated telecommunications processing
US7058463B1 (en) * 2000-12-29 2006-06-06 Nokia Corporation Method and apparatus for implementing a class D driver and speaker system
US6768795B2 (en) 2001-01-11 2004-07-27 Telefonaktiebolaget Lm Ericsson (Publ) Side-tone control within a telecommunication instrument
US6792107B2 (en) 2001-01-26 2004-09-14 Lucent Technologies Inc. Double-talk detector suitable for a telephone-enabled PC
US6940982B1 (en) * 2001-03-28 2005-09-06 Lsi Logic Corporation Adaptive noise cancellation (ANC) for DVD systems
US6996241B2 (en) 2001-06-22 2006-02-07 Trustees Of Dartmouth College Tuned feedforward LMS filter with feedback control
AUPR604201A0 (en) 2001-06-29 2001-07-26 Hearworks Pty Ltd Telephony interface apparatus
CA2354808A1 (en) 2001-08-07 2003-02-07 King Tam Sub-band adaptive signal processing in an oversampled filterbank
CA2354858A1 (en) * 2001-08-08 2003-02-08 Dspfactory Ltd. Subband directional audio signal processing using an oversampled filterbank
WO2003015074A1 (en) 2001-08-08 2003-02-20 Nanyang Technological University,Centre For Signal Processing. Active noise control system with on-line secondary path modeling
GB0129217D0 (en) 2001-12-06 2002-01-23 Tecteon Plc Narrowband detector
AU2003206666A1 (en) 2002-01-12 2003-07-24 Oticon A/S Wind noise insensitive hearing aid
US20100284546A1 (en) * 2005-08-18 2010-11-11 Debrunner Victor Active noise control algorithm that requires no secondary path identification based on the SPR property
JP3898983B2 (ja) 2002-05-31 2007-03-28 株式会社ケンウッド 音響装置
AU2003261203A1 (en) 2002-07-19 2004-02-09 The Penn State Research Foundation A linear independent method for noninvasive online secondary path modeling
US20040017921A1 (en) 2002-07-26 2004-01-29 Mantovani Jose Ricardo Baddini Electrical impedance based audio compensation in audio devices and methods therefor
CA2399159A1 (en) 2002-08-16 2004-02-16 Dspfactory Ltd. Convergence improvement for oversampled subband adaptive filters
US6917688B2 (en) * 2002-09-11 2005-07-12 Nanyang Technological University Adaptive noise cancelling microphone system
AU2002953284A0 (en) 2002-12-12 2003-01-02 Lake Technology Limited Digital multirate filtering
US7895036B2 (en) 2003-02-21 2011-02-22 Qnx Software Systems Co. System for suppressing wind noise
US7885420B2 (en) 2003-02-21 2011-02-08 Qnx Software Systems Co. Wind noise suppression system
ATE455431T1 (de) * 2003-02-27 2010-01-15 Ericsson Telefon Ab L M Hörbarkeitsverbesserung
US7406179B2 (en) 2003-04-01 2008-07-29 Sound Design Technologies, Ltd. System and method for detecting the insertion or removal of a hearing instrument from the ear canal
US7242778B2 (en) 2003-04-08 2007-07-10 Gennum Corporation Hearing instrument with self-diagnostics
US7643641B2 (en) * 2003-05-09 2010-01-05 Nuance Communications, Inc. System for communication enhancement in a noisy environment
GB2401744B (en) 2003-05-14 2006-02-15 Ultra Electronics Ltd An adaptive control unit with feedback compensation
JP3946667B2 (ja) 2003-05-29 2007-07-18 松下電器産業株式会社 能動型騒音低減装置
US7142894B2 (en) 2003-05-30 2006-11-28 Nokia Corporation Mobile phone for voice adaptation in socially sensitive environment
US7034614B2 (en) 2003-11-21 2006-04-25 Northrop Grumman Corporation Modified polar amplifier architecture
US20050117754A1 (en) 2003-12-02 2005-06-02 Atsushi Sakawaki Active noise cancellation helmet, motor vehicle system including the active noise cancellation helmet, and method of canceling noise in helmet
US7466838B1 (en) 2003-12-10 2008-12-16 William T. Moseley Electroacoustic devices with noise-reducing capability
US7110864B2 (en) 2004-03-08 2006-09-19 Siemens Energy & Automation, Inc. Systems, devices, and methods for detecting arcs
EP1577879B1 (en) * 2004-03-17 2008-07-23 Harman Becker Automotive Systems GmbH Active noise tuning system, use of such a noise tuning system and active noise tuning method
US7492889B2 (en) * 2004-04-23 2009-02-17 Acoustic Technologies, Inc. Noise suppression based on bark band wiener filtering and modified doblinger noise estimate
US20060018460A1 (en) * 2004-06-25 2006-01-26 Mccree Alan V Acoustic echo devices and methods
TWI279775B (en) 2004-07-14 2007-04-21 Fortemedia Inc Audio apparatus with active noise cancellation
US20060035593A1 (en) * 2004-08-12 2006-02-16 Motorola, Inc. Noise and interference reduction in digitized signals
DK200401280A (da) * 2004-08-24 2006-02-25 Oticon As Lavfrekvens fase matchning til mikrofoner
EP1880699B1 (en) 2004-08-25 2015-10-07 Sonova AG Method for manufacturing an earplug
KR100558560B1 (ko) 2004-08-27 2006-03-10 삼성전자주식회사 반도체 소자 제조를 위한 노광 장치
CA2481629A1 (en) * 2004-09-15 2006-03-15 Dspfactory Ltd. Method and system for active noise cancellation
US8116489B2 (en) 2004-10-01 2012-02-14 Hearworks Pty Ltd Accoustically transparent occlusion reduction system and method
US7555081B2 (en) 2004-10-29 2009-06-30 Harman International Industries, Incorporated Log-sampled filter system
US7317806B2 (en) 2004-12-22 2008-01-08 Ultimate Ears, Llc Sound tube tuned multi-driver earpiece
JP2006197075A (ja) * 2005-01-12 2006-07-27 Yamaha Corp マイクロフォンおよび拡声装置
EP1684543A1 (de) 2005-01-19 2006-07-26 Success Chip Ltd. Verfahren zum Unterdrücken von elektroakustischer Rückkopplung
JP4186932B2 (ja) 2005-02-07 2008-11-26 ヤマハ株式会社 ハウリング抑制装置および拡声装置
KR100677433B1 (ko) 2005-02-11 2007-02-02 엘지전자 주식회사 이동 통신 단말기의 모노 및 스테레오 음원 출력 장치
US7680456B2 (en) * 2005-02-16 2010-03-16 Texas Instruments Incorporated Methods and apparatus to perform signal removal in a low intermediate frequency receiver
US7330739B2 (en) 2005-03-31 2008-02-12 Nxp B.V. Method and apparatus for providing a sidetone in a wireless communication device
JP4664116B2 (ja) 2005-04-27 2011-04-06 アサヒビール株式会社 能動騒音抑制装置
EP1732352B1 (en) 2005-04-29 2015-10-21 Nuance Communications, Inc. Detection and suppression of wind noise in microphone signals
US20060262938A1 (en) 2005-05-18 2006-11-23 Gauger Daniel M Jr Adapted audio response
EP1727131A2 (en) * 2005-05-26 2006-11-29 Yamaha Hatsudoki Kabushiki Kaisha Noise cancellation helmet, motor vehicle system including the noise cancellation helmet and method of canceling noise in helmet
WO2006128768A1 (en) 2005-06-03 2006-12-07 Thomson Licensing Loudspeaker driver with integrated microphone
WO2006134637A1 (ja) 2005-06-14 2006-12-21 Glory Ltd. 紙葉類繰出装置
JP2007003994A (ja) 2005-06-27 2007-01-11 Clarion Co Ltd 音響システム
WO2007011337A1 (en) 2005-07-14 2007-01-25 Thomson Licensing Headphones with user-selectable filter for active noise cancellation
CN1897054A (zh) 2005-07-14 2007-01-17 松下电器产业株式会社 可根据声音种类发出警报的传输装置及方法
JP4818014B2 (ja) 2005-07-28 2011-11-16 株式会社東芝 信号処理装置
EP1750483B1 (en) 2005-08-02 2010-11-03 GN ReSound A/S A hearing aid with suppression of wind noise
JP4262703B2 (ja) * 2005-08-09 2009-05-13 本田技研工業株式会社 能動型騒音制御装置
US20070047742A1 (en) 2005-08-26 2007-03-01 Step Communications Corporation, A Nevada Corporation Method and system for enhancing regional sensitivity noise discrimination
EP1938274A2 (en) 2005-09-12 2008-07-02 D.V.P. Technologies Ltd. Medical image processing
JP4742226B2 (ja) 2005-09-28 2011-08-10 国立大学法人九州大学 能動消音制御装置及び方法
US8116472B2 (en) 2005-10-21 2012-02-14 Panasonic Corporation Noise control device
JP4950637B2 (ja) 2005-11-30 2012-06-13 株式会社東芝 磁気共鳴イメージング装置
EP1793374A1 (en) 2005-12-02 2007-06-06 Nederlandse Organisatie voor Toegepast-Natuuurwetenschappelijk Onderzoek TNO A filter apparatus for actively reducing noise
US20100226210A1 (en) 2005-12-13 2010-09-09 Kordis Thomas F Vigilante acoustic detection, location and response system
US8345890B2 (en) * 2006-01-05 2013-01-01 Audience, Inc. System and method for utilizing inter-microphone level differences for speech enhancement
US8194880B2 (en) * 2006-01-30 2012-06-05 Audience, Inc. System and method for utilizing omni-directional microphones for speech enhancement
US8744844B2 (en) * 2007-07-06 2014-06-03 Audience, Inc. System and method for adaptive intelligent noise suppression
US7441173B2 (en) 2006-02-16 2008-10-21 Siemens Energy & Automation, Inc. Systems, devices, and methods for arc fault detection
US20070208520A1 (en) 2006-03-01 2007-09-06 Siemens Energy & Automation, Inc. Systems, devices, and methods for arc fault management
US7903825B1 (en) 2006-03-03 2011-03-08 Cirrus Logic, Inc. Personal audio playback device having gain control responsive to environmental sounds
EP1994788B1 (en) 2006-03-10 2014-05-07 MH Acoustics, LLC Noise-reducing directional microphone array
US20110144779A1 (en) 2006-03-24 2011-06-16 Koninklijke Philips Electronics N.V. Data processing for a wearable apparatus
GB2436657B (en) 2006-04-01 2011-10-26 Sonaptic Ltd Ambient noise-reduction control system
GB2446966B (en) 2006-04-12 2010-07-07 Wolfson Microelectronics Plc Digital circuit arrangements for ambient noise-reduction
US8706482B2 (en) * 2006-05-11 2014-04-22 Nth Data Processing L.L.C. Voice coder with multiple-microphone system and strategic microphone placement to deter obstruction for a digital communication device
US7742790B2 (en) 2006-05-23 2010-06-22 Alon Konchitsky Environmental noise reduction and cancellation for a communication device including for a wireless and cellular telephone
JP2007328219A (ja) * 2006-06-09 2007-12-20 Matsushita Electric Ind Co Ltd 能動型騒音制御装置
US20070297620A1 (en) * 2006-06-27 2007-12-27 Choy Daniel S J Methods and Systems for Producing a Zone of Reduced Background Noise
JP4252074B2 (ja) 2006-07-03 2009-04-08 政明 大熊 アクティブ消音装置におけるオンライン同定時の信号処理方法
US7368918B2 (en) 2006-07-27 2008-05-06 Siemens Energy & Automation Devices, systems, and methods for adaptive RF sensing in arc fault detection
US8311243B2 (en) 2006-08-21 2012-11-13 Cirrus Logic, Inc. Energy-efficient consumer device audio power output stage
EP2080408B1 (en) 2006-10-23 2012-08-15 Starkey Laboratories, Inc. Entrainment avoidance with an auto regressive filter
US7925307B2 (en) 2006-10-31 2011-04-12 Palm, Inc. Audio output using multiple speakers
US8126161B2 (en) 2006-11-02 2012-02-28 Hitachi, Ltd. Acoustic echo canceller system
JP5564743B2 (ja) 2006-11-13 2014-08-06 ソニー株式会社 ノイズキャンセル用のフィルタ回路、ノイズ低減信号生成方法、およびノイズキャンセリングシステム
US8270625B2 (en) * 2006-12-06 2012-09-18 Brigham Young University Secondary path modeling for active noise control
US8019050B2 (en) 2007-01-03 2011-09-13 Motorola Solutions, Inc. Method and apparatus for providing feedback of vocal quality to a user
US8085966B2 (en) 2007-01-10 2011-12-27 Allan Amsel Combined headphone set and portable speaker assembly
EP1947642B1 (en) 2007-01-16 2018-06-13 Apple Inc. Active noise control system
US8229106B2 (en) 2007-01-22 2012-07-24 D.S.P. Group, Ltd. Apparatus and methods for enhancement of speech
GB2441835B (en) 2007-02-07 2008-08-20 Sonaptic Ltd Ambient noise reduction system
FR2913521B1 (fr) 2007-03-09 2009-06-12 Sas Rns Engineering Procede de reduction active d'une nuisance sonore.
DE102007013719B4 (de) 2007-03-19 2015-10-29 Sennheiser Electronic Gmbh & Co. Kg Hörer
US7365669B1 (en) 2007-03-28 2008-04-29 Cirrus Logic, Inc. Low-delay signal processing based on highly oversampled digital processing
JP5002302B2 (ja) 2007-03-30 2012-08-15 本田技研工業株式会社 能動型騒音制御装置
JP5189307B2 (ja) 2007-03-30 2013-04-24 本田技研工業株式会社 能動型騒音制御装置
US8014519B2 (en) 2007-04-02 2011-09-06 Microsoft Corporation Cross-correlation based echo canceller controllers
JP4722878B2 (ja) * 2007-04-19 2011-07-13 ソニー株式会社 ノイズ低減装置および音響再生装置
US7742746B2 (en) 2007-04-30 2010-06-22 Qualcomm Incorporated Automatic volume and dynamic range adjustment for mobile audio devices
GB2449083B (en) 2007-05-09 2012-04-04 Wolfson Microelectronics Plc Cellular phone handset with ambient noise reduction
US8320591B1 (en) 2007-07-15 2012-11-27 Lightspeed Aviation, Inc. ANR headphones and headsets
US7817808B2 (en) 2007-07-19 2010-10-19 Alon Konchitsky Dual adaptive structure for speech enhancement
EP2023664B1 (en) 2007-08-10 2013-03-13 Oticon A/S Active noise cancellation in hearing devices
US8855330B2 (en) 2007-08-22 2014-10-07 Dolby Laboratories Licensing Corporation Automated sensor signal matching
KR101409169B1 (ko) * 2007-09-05 2014-06-19 삼성전자주식회사 억제 폭 조절을 통한 사운드 줌 방법 및 장치
WO2009042635A1 (en) 2007-09-24 2009-04-02 Sound Innovations Inc. In-ear digital electronic noise cancelling and communication device
ATE518381T1 (de) * 2007-09-27 2011-08-15 Harman Becker Automotive Sys Automatische bassregelung
JP5114611B2 (ja) 2007-09-28 2013-01-09 株式会社ＤｉＭＡＧＩＣ Ｃｏｒｐｏｒａｔｉｏｎ ノイズ制御システム
US8251903B2 (en) 2007-10-25 2012-08-28 Valencell, Inc. Noninvasive physiological analysis using excitation-sensor modules and related devices and methods
US8325934B2 (en) * 2007-12-07 2012-12-04 Board Of Trustees Of Northern Illinois University Electronic pillow for abating snoring/environmental noises, hands-free communications, and non-invasive monitoring and recording
GB0725108D0 (en) 2007-12-21 2008-01-30 Wolfson Microelectronics Plc Slow rate adaption
GB0725111D0 (en) 2007-12-21 2008-01-30 Wolfson Microelectronics Plc Lower rate emulation
GB0725115D0 (en) 2007-12-21 2008-01-30 Wolfson Microelectronics Plc Split filter
GB0725110D0 (en) 2007-12-21 2008-01-30 Wolfson Microelectronics Plc Gain control based on noise level
JP4530051B2 (ja) 2008-01-17 2010-08-25 船井電機株式会社 音声信号送受信装置
US8249535B2 (en) * 2008-01-25 2012-08-21 Nxp B.V. Radio receivers
US8194882B2 (en) * 2008-02-29 2012-06-05 Audience, Inc. System and method for providing single microphone noise suppression fallback
WO2009110087A1 (ja) 2008-03-07 2009-09-11 ティーオーエー株式会社 信号処理装置
GB2458631B (en) 2008-03-11 2013-03-20 Oxford Digital Ltd Audio processing
US8559661B2 (en) 2008-03-14 2013-10-15 Koninklijke Philips N.V. Sound system and method of operation therefor
US8184816B2 (en) * 2008-03-18 2012-05-22 Qualcomm Incorporated Systems and methods for detecting wind noise using multiple audio sources
JP4572945B2 (ja) 2008-03-28 2010-11-04 ソニー株式会社 ヘッドフォン装置、信号処理装置、信号処理方法
US9142221B2 (en) * 2008-04-07 2015-09-22 Cambridge Silicon Radio Limited Noise reduction
JP4506873B2 (ja) 2008-05-08 2010-07-21 ソニー株式会社 信号処理装置、信号処理方法
US8285344B2 (en) * 2008-05-21 2012-10-09 DP Technlogies, Inc. Method and apparatus for adjusting audio for a user environment
JP5256119B2 (ja) * 2008-05-27 2013-08-07 パナソニック株式会社 補聴器並びに補聴器に用いられる補聴処理方法及び集積回路
KR101470528B1 (ko) * 2008-06-09 2014-12-15 삼성전자주식회사 적응 빔포밍을 위한 사용자 방향의 소리 검출 기반의 적응모드 제어 장치 및 방법
US8498589B2 (en) * 2008-06-12 2013-07-30 Qualcomm Incorporated Polar modulator with path delay compensation
EP2133866B1 (en) 2008-06-13 2016-02-17 Harman Becker Automotive Systems GmbH Adaptive noise control system
WO2009155696A1 (en) 2008-06-23 2009-12-30 Kapik Inc. System and method for processing a signal with a filter employing fir and iir elements
GB2461315B (en) * 2008-06-27 2011-09-14 Wolfson Microelectronics Plc Noise cancellation system
CN102077274B (zh) 2008-06-30 2013-08-21 杜比实验室特许公司 多麦克风语音活动检测器
JP4697267B2 (ja) 2008-07-01 2011-06-08 ソニー株式会社 ハウリング検出装置およびハウリング検出方法
JP2010023534A (ja) 2008-07-15 2010-02-04 Panasonic Corp 騒音低減装置
EP2311271B1 (en) 2008-07-29 2014-09-03 Dolby Laboratories Licensing Corporation Method for adaptive control and equalization of electroacoustic channels
US8290537B2 (en) 2008-09-15 2012-10-16 Apple Inc. Sidetone adjustment based on headset or earphone type
US9253560B2 (en) 2008-09-16 2016-02-02 Personics Holdings, Llc Sound library and method
US20100082339A1 (en) 2008-09-30 2010-04-01 Alon Konchitsky Wind Noise Reduction
US8355512B2 (en) 2008-10-20 2013-01-15 Bose Corporation Active noise reduction adaptive filter leakage adjusting
US8306240B2 (en) 2008-10-20 2012-11-06 Bose Corporation Active noise reduction adaptive filter adaptation rate adjusting
US20100124335A1 (en) 2008-11-19 2010-05-20 All Media Guide, Llc Scoring a match of two audio tracks sets using track time probability distribution
US8135140B2 (en) 2008-11-20 2012-03-13 Harman International Industries, Incorporated System for active noise control with audio signal compensation
US9020158B2 (en) 2008-11-20 2015-04-28 Harman International Industries, Incorporated Quiet zone control system
US9202455B2 (en) * 2008-11-24 2015-12-01 Qualcomm Incorporated Systems, methods, apparatus, and computer program products for enhanced active noise cancellation
EP2380163B1 (en) 2008-12-18 2019-02-20 Koninklijke Philips N.V. Active audio noise cancelling
EP2202998B1 (en) 2008-12-29 2014-02-26 Nxp B.V. A device for and a method of processing audio data
US8600085B2 (en) 2009-01-20 2013-12-03 Apple Inc. Audio player with monophonic mode control
EP2216774B1 (en) 2009-01-30 2015-09-16 Harman Becker Automotive Systems GmbH Adaptive noise control system and method
US8548176B2 (en) * 2009-02-03 2013-10-01 Nokia Corporation Apparatus including microphone arrangements
DE102009014463A1 (de) 2009-03-23 2010-09-30 Siemens Medical Instruments Pte. Ltd. Vorrichtung und Verfahren zum Messen der Distanz zum Trommelfell
WO2010117714A1 (en) 2009-03-30 2010-10-14 Bose Corporation Personal acoustic device position determination
EP2237270B1 (en) * 2009-03-30 2012-07-04 Nuance Communications, Inc. A method for determining a noise reference signal for noise compensation and/or noise reduction
US8155330B2 (en) * 2009-03-31 2012-04-10 Apple Inc. Dynamic audio parameter adjustment using touch sensing
US8442251B2 (en) * 2009-04-02 2013-05-14 Oticon A/S Adaptive feedback cancellation based on inserted and/or intrinsic characteristics and matched retrieval
EP2237573B1 (en) 2009-04-02 2021-03-10 Oticon A/S Adaptive feedback cancellation method and apparatus therefor
US8189799B2 (en) 2009-04-09 2012-05-29 Harman International Industries, Incorporated System for active noise control based on audio system output
US9202456B2 (en) 2009-04-23 2015-12-01 Qualcomm Incorporated Systems, methods, apparatus, and computer-readable media for automatic control of active noise cancellation
EP2247119A1 (de) * 2009-04-27 2010-11-03 Siemens Medical Instruments Pte. Ltd. Vorrichtung zum akustischen Analysieren einer Hörvorrichtung und Analyseverfahren
US8184822B2 (en) 2009-04-28 2012-05-22 Bose Corporation ANR signal processing topology
US8532310B2 (en) 2010-03-30 2013-09-10 Bose Corporation Frequency-dependent ANR reference sound compression
US8155334B2 (en) 2009-04-28 2012-04-10 Bose Corporation Feedforward-based ANR talk-through
US8345888B2 (en) 2009-04-28 2013-01-01 Bose Corporation Digital high frequency phase compensation
US8165313B2 (en) 2009-04-28 2012-04-24 Bose Corporation ANR settings triple-buffering
US8315405B2 (en) 2009-04-28 2012-11-20 Bose Corporation Coordinated ANR reference sound compression
CN102422346B (zh) 2009-05-11 2014-09-10 皇家飞利浦电子股份有限公司 音频噪声消除
CN101552939B (zh) 2009-05-13 2012-09-05 吉林大学 车内声品质自适应主动控制系统和方法
US20100296666A1 (en) 2009-05-25 2010-11-25 National Chin-Yi University Of Technology Apparatus and method for noise cancellation in voice communication
JP5389530B2 (ja) 2009-06-01 2014-01-15 日本車輌製造株式会社 対象波低減装置
EP2259250A1 (en) 2009-06-03 2010-12-08 Nxp B.V. Hybrid active noise reduction device for reducing environmental noise, method for determining an operational parameter of a hybrid active noise reduction device, and program element
JP4612728B2 (ja) 2009-06-09 2011-01-12 株式会社東芝 音声出力装置、及び音声処理システム
JP4734441B2 (ja) 2009-06-12 2011-07-27 株式会社東芝 電気音響変換装置
US8218779B2 (en) 2009-06-17 2012-07-10 Sony Ericsson Mobile Communications Ab Portable communication device and a method of processing signals therein
US8737636B2 (en) * 2009-07-10 2014-05-27 Qualcomm Incorporated Systems, methods, apparatus, and computer-readable media for adaptive active noise cancellation
ATE550754T1 (de) 2009-07-30 2012-04-15 Nxp Bv Verfahren und vorrichtung zur aktiven geräuschsminderung unter anwendung von wahrnehmungsmaskierung
JP5321372B2 (ja) 2009-09-09 2013-10-23 沖電気工業株式会社 エコーキャンセラ
US8842848B2 (en) 2009-09-18 2014-09-23 Aliphcom Multi-modal audio system with automatic usage mode detection and configuration capability
US20110091047A1 (en) * 2009-10-20 2011-04-21 Alon Konchitsky Active Noise Control in Mobile Devices
US20110099010A1 (en) * 2009-10-22 2011-04-28 Broadcom Corporation Multi-channel noise suppression system
CN102056050B (zh) * 2009-10-28 2015-12-16 飞兆半导体公司 有源噪声消除
US10115386B2 (en) 2009-11-18 2018-10-30 Qualcomm Incorporated Delay techniques in active noise cancellation circuits or other circuits that perform filtering of decimated coefficients
US8401200B2 (en) * 2009-11-19 2013-03-19 Apple Inc. Electronic device and headset with speaker seal evaluation capabilities
US8526628B1 (en) 2009-12-14 2013-09-03 Audience, Inc. Low latency active noise cancellation system
CN102111697B (zh) * 2009-12-28 2015-03-25 歌尔声学股份有限公司 一种麦克风阵列降噪控制方法及装置
US8385559B2 (en) 2009-12-30 2013-02-26 Robert Bosch Gmbh Adaptive digital noise canceller
JP5318231B2 (ja) 2010-02-15 2013-10-16 パイオニア株式会社 能動型振動騒音制御装置
EP2362381B1 (en) * 2010-02-25 2019-12-18 Harman Becker Automotive Systems GmbH Active noise reduction system
JP2011191383A (ja) * 2010-03-12 2011-09-29 Panasonic Corp 騒音低減装置
WO2011125216A1 (ja) * 2010-04-09 2011-10-13 パイオニア株式会社 能動型振動騒音制御装置
WO2011129725A1 (en) * 2010-04-12 2011-10-20 Telefonaktiebolaget L M Ericsson (Publ) Method and arrangement for noise cancellation in a speech encoder
US20110288860A1 (en) 2010-05-20 2011-11-24 Qualcomm Incorporated Systems, methods, apparatus, and computer-readable media for processing of speech signals using head-mounted microphone pair
JP5593851B2 (ja) * 2010-06-01 2014-09-24 ソニー株式会社 音声信号処理装置、音声信号処理方法、プログラム
US9053697B2 (en) 2010-06-01 2015-06-09 Qualcomm Incorporated Systems, methods, devices, apparatus, and computer program products for audio equalization
US8515089B2 (en) * 2010-06-04 2013-08-20 Apple Inc. Active noise cancellation decisions in a portable audio device
US9099077B2 (en) 2010-06-04 2015-08-04 Apple Inc. Active noise cancellation decisions using a degraded reference
EP2395500B1 (en) 2010-06-11 2014-04-02 Nxp B.V. Audio device
EP2395501B1 (en) 2010-06-14 2015-08-12 Harman Becker Automotive Systems GmbH Adaptive noise control
CN102947685B (zh) * 2010-06-17 2014-09-17 杜比实验室特许公司 用于减少环境噪声对收听者的影响的方法和装置
US20110317848A1 (en) * 2010-06-23 2011-12-29 Motorola, Inc. Microphone Interference Detection Method and Apparatus
JP2012023637A (ja) 2010-07-15 2012-02-02 Audio Technica Corp ノイズキャンセルヘッドホン
JP2011055494A (ja) 2010-08-30 2011-03-17 Oki Electric Industry Co Ltd エコーキャンセラ
US8775172B2 (en) 2010-10-02 2014-07-08 Noise Free Wireless, Inc. Machine for enabling and disabling noise reduction (MEDNR) based on a threshold
GB2484722B (en) 2010-10-21 2014-11-12 Wolfson Microelectronics Plc Noise cancellation system
KR20130115286A (ko) 2010-11-05 2013-10-21 세미컨덕터 아이디어스 투 더 마켓트(아이톰) 비.브이. 스테레오 신호에 포함된 잡음을 줄이는 방법, 이 방법을 사용하는 스테레오 신호 처리 디바이스 및 fm 수신기
US8924204B2 (en) * 2010-11-12 2014-12-30 Broadcom Corporation Method and apparatus for wind noise detection and suppression using multiple microphones
JP2012114683A (ja) * 2010-11-25 2012-06-14 Kyocera Corp 携帯電話機および携帯電話機におけるエコー低減方法
EP2461323A1 (en) * 2010-12-01 2012-06-06 Dialog Semiconductor GmbH Reduced delay digital active noise cancellation
US8908877B2 (en) 2010-12-03 2014-12-09 Cirrus Logic, Inc. Ear-coupling detection and adjustment of adaptive response in noise-canceling in personal audio devices
US9142207B2 (en) 2010-12-03 2015-09-22 Cirrus Logic, Inc. Oversight control of an adaptive noise canceler in a personal audio device
US20120155666A1 (en) * 2010-12-16 2012-06-21 Nair Vijayakumaran V Adaptive noise cancellation
US8718291B2 (en) 2011-01-05 2014-05-06 Cambridge Silicon Radio Limited ANC for BT headphones
KR20120080409A (ko) 2011-01-07 2012-07-17 삼성전자주식회사 잡음 구간 판별에 의한 잡음 추정 장치 및 방법
US8539012B2 (en) 2011-01-13 2013-09-17 Audyssey Laboratories Multi-rate implementation without high-pass filter
WO2012107561A1 (en) 2011-02-10 2012-08-16 Dolby International Ab Spatial adaptation in multi-microphone sound capture
US9037458B2 (en) * 2011-02-23 2015-05-19 Qualcomm Incorporated Systems, methods, apparatus, and computer-readable media for spatially selective audio augmentation
DE102011013343B4 (de) 2011-03-08 2012-12-13 Austriamicrosystems Ag Regelsystem für aktive Rauschunterdrückung sowie Verfahren zur aktiven Rauschunterdrückung
US8693700B2 (en) 2011-03-31 2014-04-08 Bose Corporation Adaptive feed-forward noise reduction
US9055367B2 (en) * 2011-04-08 2015-06-09 Qualcomm Incorporated Integrated psychoacoustic bass enhancement (PBE) for improved audio
US20120263317A1 (en) 2011-04-13 2012-10-18 Qualcomm Incorporated Systems, methods, apparatus, and computer readable media for equalization
US9565490B2 (en) 2011-05-02 2017-02-07 Apple Inc. Dual mode headphones and methods for constructing the same
EP2528358A1 (en) * 2011-05-23 2012-11-28 Oticon A/S A method of identifying a wireless communication channel in a sound system
US20120300960A1 (en) * 2011-05-27 2012-11-29 Graeme Gordon Mackay Digital signal routing circuit
US9214150B2 (en) 2011-06-03 2015-12-15 Cirrus Logic, Inc. Continuous adaptation of secondary path adaptive response in noise-canceling personal audio devices
US8848936B2 (en) 2011-06-03 2014-09-30 Cirrus Logic, Inc. Speaker damage prevention in adaptive noise-canceling personal audio devices
US9824677B2 (en) 2011-06-03 2017-11-21 Cirrus Logic, Inc. Bandlimiting anti-noise in personal audio devices having adaptive noise cancellation (ANC)
US9076431B2 (en) 2011-06-03 2015-07-07 Cirrus Logic, Inc. Filter architecture for an adaptive noise canceler in a personal audio device
US9318094B2 (en) 2011-06-03 2016-04-19 Cirrus Logic, Inc. Adaptive noise canceling architecture for a personal audio device
US8958571B2 (en) 2011-06-03 2015-02-17 Cirrus Logic, Inc. MIC covering detection in personal audio devices
US8948407B2 (en) * 2011-06-03 2015-02-03 Cirrus Logic, Inc. Bandlimiting anti-noise in personal audio devices having adaptive noise cancellation (ANC)
US8909524B2 (en) 2011-06-07 2014-12-09 Analog Devices, Inc. Adaptive active noise canceling for handset
GB2492983B (en) 2011-07-18 2013-09-18 Incus Lab Ltd Digital noise-cancellation
EP2551845B1 (en) 2011-07-26 2020-04-01 Harman Becker Automotive Systems GmbH Noise reducing sound reproduction
USD666169S1 (en) 2011-10-11 2012-08-28 Valencell, Inc. Monitoring earbud
US20130156238A1 (en) 2011-11-28 2013-06-20 Sony Mobile Communications Ab Adaptive crosstalk rejection
EP2803137B1 (en) 2012-01-10 2016-11-23 Cirrus Logic International Semiconductor Limited Multi-rate filter system
US9020065B2 (en) 2012-01-16 2015-04-28 Telefonaktiebolaget L M Ericsson (Publ) Radio frequency digital filter group delay mismatch reduction
KR101844076B1 (ko) 2012-02-24 2018-03-30 삼성전자주식회사 영상 통화 서비스 제공 방법 및 장치
US8831239B2 (en) 2012-04-02 2014-09-09 Bose Corporation Instability detection and avoidance in a feedback system
US9354295B2 (en) * 2012-04-13 2016-05-31 Qualcomm Incorporated Systems, methods, and apparatus for estimating direction of arrival
US9014387B2 (en) 2012-04-26 2015-04-21 Cirrus Logic, Inc. Coordinated control of adaptive noise cancellation (ANC) among earspeaker channels
US9142205B2 (en) 2012-04-26 2015-09-22 Cirrus Logic, Inc. Leakage-modeling adaptive noise canceling for earspeakers
US9123321B2 (en) 2012-05-10 2015-09-01 Cirrus Logic, Inc. Sequenced adaptation of anti-noise generator response and secondary path response in an adaptive noise canceling system
US9318090B2 (en) 2012-05-10 2016-04-19 Cirrus Logic, Inc. Downlink tone detection and adaptation of a secondary path response model in an adaptive noise canceling system
US9082387B2 (en) 2012-05-10 2015-07-14 Cirrus Logic, Inc. Noise burst adaptation of secondary path adaptive response in noise-canceling personal audio devices
US9076427B2 (en) 2012-05-10 2015-07-07 Cirrus Logic, Inc. Error-signal content controlled adaptation of secondary and leakage path models in noise-canceling personal audio devices
US9319781B2 (en) 2012-05-10 2016-04-19 Cirrus Logic, Inc. Frequency and direction-dependent ambient sound handling in personal audio devices having adaptive noise cancellation (ANC)
US9538285B2 (en) * 2012-06-22 2017-01-03 Verisilicon Holdings Co., Ltd. Real-time microphone array with robust beamformer and postfilter for speech enhancement and method of operation thereof
US9648409B2 (en) 2012-07-12 2017-05-09 Apple Inc. Earphones with ear presence sensors
AU2013299093B2 (en) 2012-08-02 2017-05-18 Kinghei LIU Headphones with interactive display
US9516407B2 (en) * 2012-08-13 2016-12-06 Apple Inc. Active noise control with compensation for error sensing at the eardrum
US9113243B2 (en) * 2012-08-16 2015-08-18 Cisco Technology, Inc. Method and system for obtaining an audio signal
US9058801B2 (en) 2012-09-09 2015-06-16 Apple Inc. Robust process for managing filter coefficients in adaptive noise canceling systems
US9129586B2 (en) 2012-09-10 2015-09-08 Apple Inc. Prevention of ANC instability in the presence of low frequency noise
US9330652B2 (en) 2012-09-24 2016-05-03 Apple Inc. Active noise cancellation using multiple reference microphone signals
US9020160B2 (en) 2012-11-02 2015-04-28 Bose Corporation Reducing occlusion effect in ANR headphones
US9344792B2 (en) 2012-11-29 2016-05-17 Apple Inc. Ear presence detection in noise cancelling earphones
US9208769B2 (en) 2012-12-18 2015-12-08 Apple Inc. Hybrid adaptive headphone
US9351085B2 (en) 2012-12-20 2016-05-24 Cochlear Limited Frequency based feedback control
US9106989B2 (en) 2013-03-13 2015-08-11 Cirrus Logic, Inc. Adaptive-noise canceling (ANC) effectiveness estimation and correction in a personal audio device
US9414150B2 (en) 2013-03-14 2016-08-09 Cirrus Logic, Inc. Low-latency multi-driver adaptive noise canceling (ANC) system for a personal audio device
US9208771B2 (en) 2013-03-15 2015-12-08 Cirrus Logic, Inc. Ambient noise-based adaptation of secondary path adaptive response in noise-canceling personal audio devices
US20140294182A1 (en) 2013-03-28 2014-10-02 Cirrus Logic, Inc. Systems and methods for locating an error microphone to minimize or reduce obstruction of an acoustic transducer wave path
US10206032B2 (en) 2013-04-10 2019-02-12 Cirrus Logic, Inc. Systems and methods for multi-mode adaptive noise cancellation for audio headsets
US9066176B2 (en) 2013-04-15 2015-06-23 Cirrus Logic, Inc. Systems and methods for adaptive noise cancellation including dynamic bias of coefficients of an adaptive noise cancellation system
US9462376B2 (en) 2013-04-16 2016-10-04 Cirrus Logic, Inc. Systems and methods for hybrid adaptive noise cancellation
US9460701B2 (en) 2013-04-17 2016-10-04 Cirrus Logic, Inc. Systems and methods for adaptive noise cancellation by biasing anti-noise level
US9402124B2 (en) 2013-04-18 2016-07-26 Xiaomi Inc. Method for controlling terminal device and the smart terminal device thereof
US9515629B2 (en) 2013-05-16 2016-12-06 Apple Inc. Adaptive audio equalization for personal listening devices
US8907829B1 (en) * 2013-05-17 2014-12-09 Cirrus Logic, Inc. Systems and methods for sampling in an input network of a delta-sigma modulator
US9264808B2 (en) 2013-06-14 2016-02-16 Cirrus Logic, Inc. Systems and methods for detection and cancellation of narrow-band noise
US9666176B2 (en) 2013-09-13 2017-05-30 Cirrus Logic, Inc. Systems and methods for adaptive noise cancellation by adaptively shaping internal white noise to train a secondary path
US10382864B2 (en) 2013-12-10 2019-08-13 Cirrus Logic, Inc. Systems and methods for providing adaptive playback equalization in an audio device
US10219071B2 (en) 2013-12-10 2019-02-26 Cirrus Logic, Inc. Systems and methods for bandlimiting anti-noise in personal audio devices having adaptive noise cancellation
US9704472B2 (en) 2013-12-10 2017-07-11 Cirrus Logic, Inc. Systems and methods for sharing secondary path information between audio channels in an adaptive noise cancellation system
US9741333B2 (en) 2014-01-06 2017-08-22 Avnera Corporation Noise cancellation system
US9479860B2 (en) 2014-03-07 2016-10-25 Cirrus Logic, Inc. Systems and methods for enhancing performance of audio transducer based on detection of transducer status
US10181315B2 (en) 2014-06-13 2019-01-15 Cirrus Logic, Inc. Systems and methods for selectively enabling and disabling adaptation of an adaptive noise cancellation system
US9478212B1 (en) 2014-09-03 2016-10-25 Cirrus Logic, Inc. Systems and methods for use of adaptive secondary path estimate to control equalization in an audio device
TWI672689B (zh) 2014-09-30 2019-09-21 美商艾孚諾亞公司 具有低潛時的聲波處理器
US9552805B2 (en) 2014-12-19 2017-01-24 Cirrus Logic, Inc. Systems and methods for performance and stability control for feedback adaptive noise cancellation
US20160365084A1 (en) 2015-06-09 2016-12-15 Cirrus Logic International Semiconductor Ltd. Hybrid finite impulse response filter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101911730A (zh) * 2008-01-31 2010-12-08 高通股份有限公司 向用户发信号通知麦克风遮盖

Also Published As

Publication number Publication date
EP2715719A2 (en) 2014-04-09
US20120310640A1 (en) 2012-12-06
JP2014519624A (ja) 2014-08-14
JP5955949B2 (ja) 2016-07-20
US20150104032A1 (en) 2015-04-16
KR101918912B1 (ko) 2018-11-15
WO2012166386A3 (en) 2013-05-16
US8958571B2 (en) 2015-02-17
EP2715719B1 (en) 2015-07-08
WO2012166386A2 (en) 2012-12-06
US10468048B2 (en) 2019-11-05
KR20140035443A (ko) 2014-03-21
CN103733254A (zh) 2014-04-16

Similar Documents

Publication Publication Date Title
CN103733254B (zh) 在个人语音设备中的麦克风覆盖检测
CN103765505B (zh) 在适应性噪音消除个人音频设备中的扬声器损坏阻止
CN103597540B (zh) 个人音频设备中耳朵耦合检测以及噪声消除中的自适应响应的调节
CN103718238B (zh) 在噪音消除个人语音设备中的次级路径适应性响应的连续调适
CN104272378B (zh) 在噪音消除个人音频设备中的次级路径适应性响应的噪音突发脉冲调适
CN103270552B (zh) 在个人语音装置中的适应性噪音消除器的监督控制
US9773490B2 (en) Source audio acoustic leakage detection and management in an adaptive noise canceling system
CN103597541B (zh) 在具有适应性噪音消除（anc）的个人语音设备中的带限抗噪音
CN104272381B (zh) 在适应性噪音消除系统中的次级路径响应模型的下行链路音调检测和调适

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant