CN104272378A - 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 - Google Patents

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 Download PDF

Info

Publication number
CN104272378A
CN104272378A CN201380024322.3A CN201380024322A CN104272378A CN 104272378 A CN104272378 A CN 104272378A CN 201380024322 A CN201380024322 A CN 201380024322A CN 104272378 A CN104272378 A CN 104272378A
Authority
CN
China
Prior art keywords
signal
adaptive filter
noise
treatment circuit
pulse
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.)
Granted
Application number
CN201380024322.3A
Other languages
English (en)
Other versions
CN104272378B9 (zh
CN104272378B (zh
Inventor
J·D·亨德里克斯
杰弗里·奥尔德森
安东尼奥·约翰·米勒
Y·陆
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 CN104272378A publication Critical patent/CN104272378A/zh
Application granted granted Critical
Publication of CN104272378B publication Critical patent/CN104272378B/zh
Publication of CN104272378B9 publication Critical patent/CN104272378B9/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
    • 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
    • G10K11/17827—Desired external signals, e.g. pass-through audio such as music or speech
    • 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
    • G10K11/002—Devices for damping, suppressing, obstructing or conducting sound in acoustic devices
    • 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
    • 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
    • G10K11/17813—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 acoustic paths, e.g. estimating, calibrating or testing of transfer functions or cross-terms
    • G10K11/17817—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 acoustic paths, e.g. estimating, calibrating or testing of transfer functions or cross-terms between the output signals and the error signals, i.e. secondary path
    • 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
    • G10K11/17857—Geometric disposition, e.g. placement of microphones
    • 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
    • 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
    • G10K2210/3049—Random noise used, e.g. in model identification

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Telephone Function (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Noise Elimination (AREA)

Abstract

一种个人音频设备例如无线电话，从误差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变换器输出以导致周围音频声音的消除。误差麦克风也可以提供在扬声器附近以提供指示噪音消除的效果的误差信号。次级路径估计适应性滤波器使用来估计从噪音消除电路穿过变换器的电声音路径以便可以从误差信号去除源音频。噪音突发脉冲被间歇地注入并且控制次级路径估计适应性滤波器的调适，以便可以与源音频的存在和幅度无关地维持次级路径估计。

Description

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
技术领域
本发明总体上涉及包括适应性噪音消除(ANC)的个人音频设备例如无线电话，并且更具体地，涉及在使用注入噪音突发脉冲来提供次级路径估计的调适的个人音频设备中的ANC的控制。
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设备例如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设备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设备在清晰度方面的性能。
噪音消除操作可以通过在变换器处测量设备的变换器输出得到改进从而利用误差麦克风确定噪音消除的效果。变换器的测量输出理想地是源音频，例如在电话中的下行链路音频，和/或在专用音频播放器或电话中的回播音频，因为噪音消除信号在变换器的位置理想地被周围噪音消除。为了从误差麦克风信号去除源音频，从变换器穿过误差麦克风的次级路径可以被估计并且被用来过滤源音频到正确相位和幅度以从误差麦克风信号减去。然而，当源音频不存在时，次级路径估计通常不能被更新。并且，在电话通话开始时，当足够幅度的源音频可以或不可以变得立即可获得时，次级路径会具有与源音频可获得用来训练次级路径适应性滤波器的上一次次级路径具有的响应不同的响应。
因此，期望提供一种个人音频设备包含无线电话，其利用次级路径估计提供噪音消除来测量变换器的输出并且可以独立于足够幅度的源音频是否存在来调适次级路径估计。
发明内容
在一种个人音频设备、一种操作方法及一种集成电路中完成提供个人音频设备的上述目的，个人音频设备提供包括不管是否已经存在源音频都可以被调适的次级路径估计的噪音消除。
个人音频设备包含外壳，其中变换器安装在外壳上用于重现包含用于提供给听者的源音频及用于抵抗周围音频声音在变换器的声输出中的影响的抗噪音信号两者的音频信号。误差麦克风安装在外壳上以提供指示变换器输出和周围音频声音的误差麦克风信号。个人音频设备还包含在外壳内的适应性噪音消除(ANC)处理电路，用于从误差麦克风信号适应性地产生抗噪音信号以便抗噪音信号导致周围音频声音的基本消除。处理电路控制次级路径适应性滤波器的调适，用于补偿从处理电路的输出穿过变换器的电声音路径。ANC处理电路注入噪音突发脉冲(burst)并且允许次级路径适应性滤波器在噪音突发脉冲期间调适，以便正确地建模次级路径。
如附图所示，从本发明的较佳实施例的下列更具体描述中，本发明的上述及其他目的、特征及优点将变得清晰。
附图说明
图1为示例性无线电话10的视图。
图2为在无线电话10内的电路的方框图。
图3A为描述可以包括在图2的CODEC集成电路20的ANC电路30内的信号处理电路和功能模块的一个示例的方框图。
图3B为描述可以包括在图2的CODEC集成电路20的ANC电路30内的信号处理电路和功能模块的另一个示例的方框图。
图4－6为图解根据各个实施例的图2的CODEC集成电路20的ANC电路30的操作的信号波形图。
图7为描述在图2的CODEC集成电路20内的信号处理电路和功能模块的方框图。
具体实施方式
本发明涵盖可在个人音频设备例如无线电话中实施的噪音消除技术及电路。个人语音设备包含适应性噪音消除(ANC)电路，其测量周围声环境并产生注入扬声器(或其他变换器)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测量周围语音和在变换器处的变换器输出，从而给出噪音消除效果的指示。使用估计适应性滤波器的次级路径来从误差麦克风信号中去除回播音频以便产生误差信号。然而，取决于由个人音频设备重现的音频信号，例如在电话通话期间的下行链路音频或来自媒体文件/连接的回播音频，的存在(和位准)，次级路径适应性滤波器可能不能够连续调适来估计次级路径。并且，在电话通话的开始，不仅下行链路音频可能不存在，而且任何之前的次级路径模型由于无线电话相对于用户耳朵的不同位置而可能是不精确的。因此，本发明使用注入噪音突发脉冲来提供足够的能量用于次级路径估计适应性滤波器以尽量不被用户察觉的方式连续调适。
图1表示邻近人耳朵5的无线电话10。所示无线电话10为可采用根据本发明的实施例的技术的设备的一实例，但是应了解并非需要所示无线电话10或后续图解中所描绘的电路中所体现的元件或配置的全部。无线电话10包含变换器例如扬声器SPKR，其重现无线电话10所接收的远端语音，连同其他本端音频事件例如铃声、所储存的音频程序材料、近端语音、来自网页的源或由无线电话10所接收的其他网络通信、以及音频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以捕捉从无线电话10传输至其他会话参与者的近端语音。
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。提供参考麦克风R用于测量周围声环境且其定位远离使用者的嘴部通常所在的位置，以便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，以当无线电话10紧邻耳朵5时通过提供与靠近耳朵5的扬声器SPKR所重现的音频合成的周围音频的测量来进一步改进ANC操作。在无线电话10内的示例性电路14包含语音CODEC集成电路20，其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，该单个集成电路含有用于实施整个个人音频设备，例如片上MP3播放器集成电路的控制电路及其他功能。
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对)，并且还测量撞击在误差麦克风E上的相同环境声事件。所示无线电话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以具有使存在于误差麦克风E上的环境声事件的振幅最小化的特性。因为声路径P(z)从参考麦克风R延伸至误差麦克风E，所以ANC电路本质结合去除电声路径S(z)的影响来估计声路径P(z)。电声路径S(z)代表CODEC集成电路(IC)20的音频输出的响应及包含特定声环境中在扬声器SPKR与误差麦克风E之间的耦合的扬声器SPKR的声/电转换函数。当无线电话未牢固地压至耳朵5时，S(z)受耳朵5和其他实物的近接性和结构、以及可能邻近无线电话10的人头部结构的影响。虽然所示无线电话10包含具有第三近端语音麦克风NS的双麦克风ANC系统，但是不包含单独误差麦克风及参考麦克风的其他系统可以执行上述的技术。替代地，语音麦克风NS可以使用来执行在上述系统中的参考麦克风R的功能。最后，在仅设计用于音频回播的个人音频设备中，将通常不包括近端语音麦克风NS，并且在下文更详细描述的电路中的近端语音信号路径可省略。
现参考图2，在无线电话10内的电路展示在方框图中。CODEC集成电路20包括：模数转换器(ADC)21A，其用于接收参考麦克风信号并且产生参考麦克风信号的数字表示ref；ADC21B，其用于接收误差麦克风信号并且产生误差麦克风信号的数字表示err；以及ADC21C，其用于接收近端语音麦克风信号并且产生近端语音麦克风信号的数字表示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放大接收合成器26的输出的数模转换器(DAC)23的输出。合成器26合成来自内部音频源24的音频信号ia、由ANC电路30所产生的抗噪音信号anti-noise(其根据约定具有与参考麦克风信号ref中的噪音相同的极性且因此被合成器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接收自射频(RF)集成电路22的下行链路语音ds成适当关联的语音。根据本发明的实施例，下行链路语音ds提供给ANC电路30，ANC电路30取代源音频(ds+ia)地或与源音频(ds+ia)合成地间歇地注入噪音突发脉冲。下行链路语音ds、内部音频ia和噪音(或者如果使用为替代信号时的源音频/噪音)提供给合成器26，以便信号(ds+ia+噪音)总是存在以利用在ANC电路30中的次级路径适应性滤波器估计音频路径S(z)。近端语音信号ns还提供至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。
图3A表示可以使用来实施图2的ANC电路30的ANC电路30A的细节的一个示例。适应性滤波器32接收参考麦克风信号ref并且在理想情况下将它的转换函数W(z)调适为P(z)/S(z)以产生抗噪音信号anti-noise，其被提供到将抗噪音信号与由变换器重现的音频合成的输出合成器，例如由图2的合成器26示例。适应性滤波器32的系数由W系数控制模块31控制，该W系数控制模块31使用两个信号的相关性确定适应性滤波器32的响应，该适应性滤波器32通常在最小均方意义上使存在于误差麦克风信号err中的参考麦克风信号ref的那些分量之间的误差最小化。由W系数控制模块31处理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塑形的参考麦克风信号ref以及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，响应SECOPY(z)，的估计的拷贝转换参考麦克风信号ref，并且在去除由于源音频的回播的误差麦克风信号err的分量之后，将误差麦克风信号err最小化，适应性滤波器32调适到P(z)/S(z)的期望响应。除了误差麦克风信号err，与滤波器34B的输出一起由W系数控制模块31处理的另一信号包含相反数量的源音频，该源音频包含的下行链路音频信号ds和内部音频ia已通过滤波器响应SE(z)处理，其中响应SECOPY(z)是一拷贝。通过注入相反数量的源音频，防止适应性滤波器32调适为误差麦克风信号err中所存在的相对较大量的源音频，并且通过用路径S(z)的响应的估计变换下行链路音频信号ds和内部音频ia的反向拷贝，在处理前从误差麦克风信号err去除的源音频应该与在误差麦克风信号err重现的下行链路音频信号ds和内部音频ia的预期版本匹配，因为S(z)的电路径及声路径为下行链路音频信号ds和内部音频ia到达误差麦克风E所采用的路径。滤波器34B本身不是滤波器，但是其具有被调谐来匹配适应性滤波器34A的响应的可调节响应，以便滤波器34B的响应追踪适应性滤波器34A的调适。
为了实施上述内容，适应性滤波器34A具有由SE系数控制模块33控制的系数，该SE系数控制块33在由合成器36去除上述经过滤的下行链路音频信号ds和内部音频ia之后，处理源音频(ds+ia)和误差麦克风信号err，上述经过滤的下行链路音频信号ds和内部音频ia已通过适应性滤波器34A过滤以代表递送至误差麦克风E的预期源音频。适应性滤波器34A因此被调适来从下行链路音频信号ds和内部音频ia产生误差信号e，该误差信号e在被从误差麦克风信号err中减去时，包含误差麦克风信号err不归因于源音频(ds+ia)的含量。然而，如果下行链路音频信号ds和内部音频ia都不存在，例如在电话呼叫的开始，或者具有非常小的幅度，那么SE系数控制模块33将不具有足够的输入以估计声路径S(z)。因此，在ANC电路30中，源音频检测器35检测是否有足够的源音频(ds+ia)存在，并且如果有足够的源音频(ds+ia)存在，那么更新次级路径估计。源音频检测器35可以由语音存在信号，如果该信号可以从下行链路音频信号ds的数字源获得，或者从媒体回放控制电路提供的回放有效信号替代。选择器38被提供用来根据来自控制电路39的控制信号burst在到次级路径适应性滤波器34A和SE系数控制模块33的输入处在源音频(ds+ia)与噪音产生器37的输出之间进行选择，控制信号burst在被确认时选择噪音产生器37的输出。控制信号burst的确认允许ANC电路30利用噪音产生器37的输出估计声路径S(z)。在控制电路39临时选择噪音产生器的输出时，噪音突发脉冲因此被注入到次级路径适应性滤波器34A。替代地，选择器38可以用将噪音突发脉冲添加到源音频(ds+ia)的合成器替代。
控制电路39接收来自源音频检测器35的输入，其包括指示什么时候远程铃声信号存在于下行链路音频信号ds中的Ring指示器和指示什么时候整个源音频(ds+ia)的位准大于阈值的Level指示。控制电路39还从W系数控制31接收稳定性指示stable，其通常在Δ(Σ|Wk(z))|/Δt大于阈值时被解除确认，但替代地，稳定性指示stable可以是基于比确定适应性滤波器32的响应的所有W(z)系数更小的。稳定性指示stable在一些实施例中由控制电路39使用来触发噪音突发脉冲的注入以及由SE系数控制模块33和W系数控制模块31产生的系数的后续更新。控制电路39可以执行用于确定什么时候注入噪音突发脉冲的各种算法。并且，控制电路39产生控制信号haltW来控制W系数控制31的调适并且产生控制信号haltSE来控制SE系数控制33的调适。用于注入噪音突发脉冲的示例性算法以及响应W(z)和次级路径估计SE(z)的调适的排序在下面参考图4至图6更详细地讨论。
图3B表示可以使用来实施图2的ANC电路30的替代ANC电路30B的细节的另一个示例。ANC电路30B与图3A的ANC电路30A相似，所以下面仅讨论在ANC电路30B与ANC电路30A之间的差别。在图示中，存在于图3A的ANC电路30A中的所有部件都是可选存在的，但是如果去除可选部件和信号(表示在虚框和虚线中)结果是一反馈噪音消除系统，其中通过使用滤波器32A利用预定响应FB(z)滤波误差信号e来提供抗噪音信号。合成器36A对于如上所述的纯反馈实施例是不需要的，但另一个替代例是提供在ANC电路30A中所示的所有部件和信号，并且将由滤波器32A产生的抗噪音信号与由适应性滤波器32产生的抗噪音信号合成，其将由于滤波器32A的存在调适到与在图3A的ANC电路30A的实施例中不同的响应。
在如图4所示的示例中，当在时刻t0、t3和t4处在下行链路音频d中检测到远程铃音时，通过确定控制信号haltSE，次级路径适应性滤波器调适暂停。由在时刻t1处的信号Noise代表的噪音突发脉冲被触发，时刻t1就在第一次铃音结束并且解除确认控制信号haltSE之后，允许图3A的SE系数控制33，或者相似的图3B的SE系数控制33的更新，更新次级路径估计SE(z)。然后，在噪音突发脉冲完成之后，再次确认控制信号haltSE并且解除确认控制信号haltW持续在预定时间周期内以允许响应W(z)调适到周围声环境。当在时刻t5和t7处在下行链路音频d中检测到语音时，也解除确认控制信号haltSE，如同反映在控制信号Level&/Ring的状态中，该控制信号Level&/Ring代表逻辑和位准指示Level，以及铃声指示Ring的反相，其指示下行链路语音以足以正确地调适次级路径估计的幅度存在。在时刻t6和t8处也解除确认控制信号haltW，以便一旦次级路径估计已经更新，响应W(z)再次被允许调适。
在如作为图4的示例的替代的图5所示的示例中，对于与在图4的示例中相同的下行链路音频d波形，次级路径适应性滤波器调适不为第一次远程铃音暂停，但在时刻t3和t4处在下行链路音频d中检测到后续远程铃音时，通过确定控制信号haltSE，次级路径适应性滤波器调适暂停。在第一次铃音期间由信号Noise代表的噪音突发脉冲在时刻t0处被触发，时刻t0刚好是在检测到第一次铃音之后。在噪音突发脉冲终止(可以响应于检测铃音的结束而被执行)之后，或者在预定时间周期已经消逝免于开始噪音突发脉冲之后，确认控制信号haltSE。然后，如在图4的示例中，在噪音突发脉冲完成之后，再次确认控制信号haltSE并且解除确认控制信号haltW持续在预定时间周期内以允许响应W(z)调适到周围声环境。当在时刻t5和t7处在下行链路音频d中检测语音时也解除确认控制信号haltSE，如在图4的示例中。
图6图示可以与图4和图5的示例结合使用的技术。在时刻t9、t11和t13处，在下行链路音频d中检测到语音，并且解除确认控制信号haltSE来更新次级路径估计SE(z)。为了更新响应W(z)，在确认控制信号haltSE之后间隔地解除确认控制信号haltW。在预定时间周期TD已经消逝之后，在其期间在下行链路信号d中不存在用于调适次级路径估计的下行链路语音，并且不存在如在图5中图示的方法中执行的掩盖噪音突发脉冲的铃音，在时刻t15处注入噪音突发脉冲并且解除确认控制信号haltSE以迫使更新次级路径估计，在无线电话10正在参与的电话会话期间。在时刻t16处，再次确认控制信号haltSE并且简短地解除确认控制信号haltW以更新响应W(z)。
现在参考图7，示出ANC系统的方框图，其用于实施如图3A或图3B描述的ANC技术，并且具有如可以实施在图2的CODEC集成电路20中的处理电路40。处理电路40包括联接到存储器44的处理器核42，在存储器44中存储包括计算机程序产品的程序指令，其实施上面所述ANC技术的一些或全部，以及其他信号处理。可选地，专用数字信号处理(DSP)逻辑46可以被提供用来实施由处理电路40提供的ANC信号处理的一部分，或替代地全部。处理电路40还包括ADC 21A－21C，分别用于接收来自参考麦克风R、误差麦克风E和近端语音麦克风NS的输入。DAC23和放大器A1也由处理电路40提供用于提供变换器输出信号，包括如上所述的抗噪音。
虽然已特别参考本发明的优选实施例展示及描述本发明，但是本领域的技术人员理解可在不脱离本发明的精神及范围的情况下在其中作出上述及其他形式及细节的改变。

Claims (54)

1.一种个人音频设备，包括：
个人音频设备壳体；
安装在该壳体上的变换器，用于再现包括回播给听者的源音频和抵抗周围音频声音在变换器的声输出中的影响的抗噪音信号两者的音频信号；
靠近变换器安装在所述壳体上的误差麦克风，用于提供指示所述变换器的声输出和在所述变换器处的周围音频声音的误差麦克风信号；
噪音源，用于提供噪音信号；以及
处理电路，其与误差信号一致地产生抗噪音信号以减少由听者听到的所述周围音频声音的存在，其中所述处理电路实施为具有塑形源音频的次级路径响应的次级路径适应性滤波器和从误差麦克风信号去除源音频以提供误差信号的合成器，并且其中所述处理电路从噪音源注入噪音间歇突发脉冲到所述次级路径适应性滤波器和由所述变换器再现的音频信号，并且允许所述次级路径适应性滤波器在噪音间歇突发脉冲期间调适。
2.根据权利要求1所述的个人音频设备，其中所述处理电路利用预定响应滤波所述误差信号以产生所述抗噪音信号。
3.根据权利要求2所述的个人音频设备，还包括安装在所述壳体上的参考麦克风，用于提供指示所述周围音频声音的参考麦克风信号，其中所述处理电路与所述误差信号和所述参考麦克风信号一致地从已滤波误差信号和参考信号产生所述抗噪音信号以减少由听者听到的所述周围音频声音的存在。
4.根据权利要求1所述的个人音频设备，还包括安装在壳所述体上的参考麦克风，用于提供指示所述周围音频声音的参考麦克风信号，其中所述处理电路与所述误差信号和所述参考麦克风信号一致地从所述参考信号产生所述抗噪音信号以减少由听者听到的所述周围音频声音的存在。
5.根据权利要求4所述的个人音频设备，其中所述处理电路实施为另一个适应性滤波器，其具有从所述参考麦克风信号产生所述抗噪音信号以减少由听者听到的所述周围音频声音的存在的响应，其中所述处理电路与所述误差信号和所述参考麦克风信号一致地塑形另一个适应性滤波器的响应。
6.根据权利要求5所述的个人音频设备，其中所述处理电路还控制另一个适应性滤波器和所述次级路径适应性滤波器的调适，以便当注入噪音间歇突发脉冲时，阻止另一个适应性滤波器调适并且导致次级路径适应性滤波器调适，并且一旦噪音间歇突发脉冲已经终止，允许另一个适应性滤波器调适。
7.根据权利要求6所述的个人音频设备，其中所述处理电路还控制另一个适应性滤波器和次级路径适应性滤波器的调适，以便一旦噪音间歇突发脉冲已经终止，阻止所述次级路径适应性滤波器调适。
8.根据权利要求6所述的个人音频设备，其中所述处理电路确定所述另一个适应性滤波器的一个或多个系数具有超过被允许阈值的变化率，并且其中所述处理电路从所述噪音源注入一个或多个噪音间歇突发脉冲到所述次级路径适应性滤波器和由所述变换器再现的所述音频信号中，并且允许所述次级路径适应性滤波器响应于检测到另一个适应性滤波器的一个或多个系数具有超过被允许阈值的变化率进行调适。
9.根据权利要求6所述的个人音频设备，其中当所述处理电路注入噪音间歇突发脉冲时，所述处理电路改变所述另一个适应性滤波器的调适率。
10.根据权利要求6所述的个人音频设备，其中当所述处理电路注入噪音间歇突发脉冲时，所述处理电路减少另一个适应性滤波器的调适率。
11.根据权利要求6所述的个人音频设备，其中所述处理电路仅间歇地允许另一个适应性滤波器调试持续在个人音频设备处检测到近端语音之后的预定周期。
12.根据权利要求6所述的个人音频设备，其中所述处理电路响应于确定自从已经允许次级路径适应性滤波器调适以后的预定时间周期已经消逝，而注入所述一个和多个噪音间歇突发脉冲。
13.根据权利要求12所述的个人音频设备，其中所述处理电路检测源音频是否具有足够的幅度来允许次级路径适应性滤波器调适，并且其中所述确定预定时间周期已经消逝指示源音频已经没有足够的幅度来允许次级路径适应性滤波器调适持续在至少所述预定时间周期内。
14.根据权利要求1所述的个人音频设备，其中所述处理电路检测在源音频中的远程铃声信号，并且其中所述处理电路响应于检测到远程铃声已经完成，注入一个和多个噪音间歇突发脉冲。
15.根据权利要求14所述的个人音频设备，其中所述处理电路仅在铃声序列的第一远程铃声信号之后注入所述一个和多个噪音间歇突发脉冲，并且在铃声序列的后续远程铃声信号之后不注入任意一个噪音间歇突发脉冲。
16.根据权利要求1所述的个人音频设备，其中所述处理电路检测在源音频中的远程铃声信号，并且其中所述处理电路响应于检测远程铃声信号并且在远程铃声信号期间注入一个和多个噪音间歇突发脉冲。
17.根据权利要求16所述的个人音频设备，其中所述处理电路仅响应于检测铃声序列的第一铃声信号，注入所述一个和多个噪音间歇突发脉冲，并且在铃声序列的后续远程铃声信号期间或之后不注入任意一个噪音间歇突发脉冲。
18.根据权利要求1所述的个人音频设备，其中所述处理电路在个人音频设备正在参与的电话会话期间注入一个和多个噪音间歇突发脉冲。
19.一种用个人音频设备抵抗周围音频声音的影响的方法，该方法包括：
与误差信号一致地适应性地产生抗噪音信号以减少由听者听到的周围音频声音的存在；
将抗噪音信号与源音频合成；
提供合成的结果给变换器；
利用误差麦克风测量变换器的输出和周围音频声音；
实施为具有塑形源音频的次级路径响应的次级路径适应性滤波器和从误差麦克风信号去除源音频以提供误差信号的合成器；
从噪音源注入噪音间歇突发脉冲到次级路径适应性滤波器和由变换器再现的音频信号；以及
允许次级路径适应性滤波器在噪音间歇突发脉冲期间调适。
20.根据权利要求19所述的方法，其中所述滤波利用预定响应滤波误差信号以产生抗噪音信号。
21.根据权利要求20所述的方法，还包括：
提供指示周围音频声音的参考麦克风信号；以及
与误差信号和参考麦克风信号一致地从已滤波误差信号和参考信号产生抗噪音信号以减少由听者听到的周围音频声音的存在。
22.根据权利要求19所述的方法，还包括
提供指示周围音频声音的参考麦克风信号；以及
与误差信号和参考麦克风信号一致地从参考信号产生抗噪音信号以减少由听者听到的周围音频声音的存在。
23.根据权利要求22所述的方法，其中所述产生抗噪音信号由另一个适应性滤波器执行，该另一个适应性滤波器具有从参考麦克风信号产生抗噪音信号的响应，并且其中所述方法还包括与误差信号和参考麦克风信号一致地塑形另一个适应性滤波器的响应。
24.根据权利要求23所述的方法，还包括控制另一个适应性滤波器和次级路径适应性滤波器的调适，以便当注入噪音间歇突发脉冲时，阻止另一个适应性滤波器调适并且导致次级路径适应性滤波器调适，并且一旦噪音间歇突发脉冲已经终止，允许另一个适应性滤波器调适。
25.根据权利要求24所述的方法，其中所述控制控制另一个适应性滤波器和次级路径适应性滤波器的调适，以便当注入噪音间歇突发脉冲时，阻止另一个适应性滤波器调适并且导致次级路径适应性滤波器调适，并且一旦噪音间歇突发脉冲已经终止，允许另一个适应性滤波器调适并且阻止次级路径适应性滤波器调适。
26.根据权利要求24所述的方法，还包括：
确定另一个适应性滤波器的一个或多个系数具有超过被允许阈值的变化率；
从噪音源注入一个或多个噪音间歇突发脉冲到次级路径适应性滤波器和由变换器再现的音频信号中；
检测另一个适应性滤波器的一个或多个系数具有超过被允许阈值的变化率；以及
响应于所述检测另一个适应性滤波器的一个或多个系数具有超过被允许阈值的变化率，允许次级路径适应性滤波器调适。
27.根据权利要求24所述的方法，还包括在注入期间改变另一个适应性滤波器的调适率。
28.根据权利要求24所述的方法，还包括在注入期间减少另一个适应性滤波器的调适率。
29.根据权利要求24所述的方法，其中所述允许只间歇地允许另一个适应性滤波器的调试持续在个人音频设备处检测到近端语音之后的预定周期。
30.根据权利要求24所述的方法，其中所述注入响应于确定自从已经允许次级路径适应性滤波器调适以后的预定时间周期已经消逝，而注入一个和多个噪音间歇突发脉冲。
31.根据权利要求30所述的方法，还包括检测源音频是否具有足够的幅度来允许次级路径适应性滤波器调适，并且其中所述预定时间周期已经消逝的确定指示源音频已经没有足够的幅度来允许次级路径适应性滤波器调适持续在至少所述预定时间周期内。
32.根据权利要求19所述的方法，还包括检测在源音频中的远程铃声信号，并且其中所述注入响应于检测到远程铃声已经完成注入一个和多个噪音间歇突发脉冲。
33.根据权利要求32所述的方法，其中所述注入仅在铃声序列的第一远程铃声信号之后注入一个和多个噪音间歇突发脉冲，并且在铃声序列的后续远程铃声信号之后不注入任意一个噪音间歇突发脉冲。
34.根据权利要求19所述的方法，还包括检测在源音频中的远程铃声信号，并且其中所述注入响应于检测远程铃声信号并且在远程铃声信号期间注入一个和多个噪音间歇突发脉冲。
35.根据权利要求34所述的方法，其中所述注入仅响应于检测铃声序列的第一铃声信号注入一个和多个噪音间歇突发脉冲，并且在铃声序列的后续远程铃声信号期间或之后不注入任意一个噪音间歇突发脉冲。
36.根据权利要求19所述的方法，其中所述注入在个人音频设备正在参与的电话会话期间注入一个和多个噪音间歇突发脉冲。
37.一种用于实施个人音频设备的至少一部分的集成电路，包括：
输出，用于给输出变换器提供包括回播给听者的源音频和抵抗周围音频声音在变换器的声输出中的影响的抗噪音信号两者的输出信号；
误差麦克风输入，用于接收指示变换器的声输出和在变换器处的周围音频声音的误差麦克风信号；
噪音源，用于提供噪音信号；以及
处理电路，其与误差信号一致地适应性产生抗噪音信号以减少由听者听到的周围音频声音的存在，其中处理电路实施为具有塑形源音频的次级路径响应的次级路径适应性滤波器和从误差麦克风信号去除源音频以提供误差信号的合成器，并且其中处理电路从噪音源注入噪音间歇突发脉冲到次级路径适应性滤波器和由变换器再现的音频信号，并且允许次级路径适应性滤波器在噪音间歇突发脉冲期间调适。
38.根据权利要求37所述的集成电路，其中所述处理电路利用预定响应滤波误差信号以产生抗噪音信号。
39.根据权利要求38所述的集成电路，还包括安装在壳体上的参考麦克风，用于提供指示周围音频声音的参考麦克风信号，其中所述处理电路与误差信号和参考麦克风信号一致地从已滤波误差信号和参考信号产生抗噪音信号以减少由听者听到的周围音频声音的存在。
40.根据权利要求37所述的集成电路，还包括安装在壳体上的参考麦克风，用于提供指示周围音频声音的参考麦克风信号，其中所述处理电路与误差信号和参考麦克风信号一致地从参考信号产生抗噪音信号以减少由听者听到的周围音频声音的存在。
41.根据权利要求40所述的集成电路，其中所述处理电路实施为另一个适应性滤波器，其具有从参考麦克风信号产生抗噪音信号以减少由听者听到的周围音频声音的存在的响应，其中所述处理电路与误差信号和参考麦克风信号一致地塑形另一个适应性滤波器的响应。
42.根据权利要求41所述的集成电路，其中所述处理电路还控制另一个适应性滤波器和次级路径适应性滤波器的调适，以便当注入噪音间歇突发脉冲时，阻止另一个适应性滤波器调适并且导致次级路径适应性滤波器调适，并且一旦噪音间歇突发脉冲已经终止，允许另一个适应性滤波器调适。
43.根据权利要求42所述的集成电路，其中所述处理电路还控制另一个适应性滤波器和次级路径适应性滤波器的调适，以便一旦噪音间歇突发脉冲已经终止，阻止次级路径适应性滤波器调适。
44.根据权利要求42所述的集成电路，其中所述处理电路确定另一个适应性滤波器的一个或多个系数具有超过被允许阈值的变化率，并且其中所述处理电路从噪音源注入一个或多个噪音间歇突发脉冲到次级路径适应性滤波器和由变换器再现的音频信号中并且允许次级路径适应性滤波器响应于检测到另一个适应性滤波器的一个或多个系数具有超过被允许阈值的变化率进行调适。
45.根据权利要求42所述的集成电路，其中当所述处理电路注入噪音间歇突发脉冲时，所述处理电路改变另一个适应性滤波器的调适率。
46.根据权利要求42所述的集成电路，其中当所述处理电路注入噪音间歇突发脉冲时，所述处理电路减少另一个适应性滤波器的调适率。
47.根据权利要求42所述的集成电路，其中所述处理电路仅间歇地允许另一个适应性滤波器调试持续在个人音频设备处检测到近端语音之后的预定周期。
48.根据权利要求42所述的集成电路，其中所述处理电路响应于确定自从已经允许次级路径适应性滤波器调适以后的预定时间周期已经消逝，而注入所述一个和多个噪音间歇突发脉冲。
49.根据权利要求48所述的集成电路，其中所述处理电路检测源音频是否具有足够的幅度来允许次级路径适应性滤波器调适，并且其中所述确定预定时间周期已经消逝指示源音频已经没有足够的幅度来允许次级路径适应性滤波器调适持续在至少所述预定时间周期内。
50.根据权利要求37所述的集成电路，其中所述处理电路检测在源音频中的远程铃声信号，并且其中所述处理电路响应于检测到远程铃声已经完成注入一个和多个噪音间歇突发脉冲。
51.根据权利要求50所述的集成电路，其中所述处理电路仅在铃声序列的第一远程铃声信号之后注入所述一个和多个噪音间歇突发脉冲，并且在铃声序列的后续远程铃声信号之后不注入任意一个噪音间歇突发脉冲。
52.根据权利要求37所述的集成电路，其中所述处理电路检测在源音频中的远程铃声信号，并且其中所述处理电路响应于检测远程铃声信号并且在远程铃声信号期间注入一个和多个噪音间歇突发脉冲。
53.根据权利要求52所述的集成电路，其中所述处理电路仅响应于检测铃声序列的第一铃声信号，注入所述一个和多个噪音间歇突发脉冲，并且在铃声序列的后续远程铃声信号期间或之后不注入任意一个噪音间歇突发脉冲。
54.根据权利要求37所述的集成电路，其中所述处理电路在个人音频设备正在参与的电话会话期间注入一个和多个噪音间歇突发脉冲。
CN201380024322.3A 2012-05-10 2013-04-15 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 Active CN104272378B9 (zh)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US201261645138P 2012-05-10 2012-05-10
US61/645,138 2012-05-10
US13/722,119 US9082387B2 (en) 2012-05-10 2012-12-20 Noise burst adaptation of secondary path adaptive response in noise-canceling personal audio devices
US13/722,119 2012-12-20
PCT/US2013/036531 WO2013169436A2 (en) 2012-05-10 2013-04-15 Noise burst adaptation of secondary path adaptive response in noise-canceling personal audio devices

Publications (3)

Publication Number Publication Date
CN104272378A true CN104272378A (zh) 2015-01-07
CN104272378B CN104272378B (zh) 2017-07-25
CN104272378B9 CN104272378B9 (zh) 2017-12-01

Family

ID=49548629

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201380024322.3A Active CN104272378B9 (zh) 2012-05-10 2013-04-15 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

Country Status (7)

Country Link
US (1) US9082387B2 (zh)
EP (1) EP2847759B1 (zh)
JP (1) JP6196292B2 (zh)
KR (1) KR102032112B1 (zh)
CN (1) CN104272378B9 (zh)
IN (1) IN2014KN02634A (zh)
WO (1) WO2013169436A2 (zh)

Families Citing this family (56)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
KR101909432B1 (ko) 2010-12-03 2018-10-18 씨러스 로직 인코포레이티드 개인용 오디오 디바이스에서 적응형 잡음 제거기의 실수 제어
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)
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
US9214150B2 (en) 2011-06-03 2015-12-15 Cirrus Logic, Inc. Continuous adaptation of secondary path adaptive response in noise-canceling personal audio devices
US9325821B1 (en) 2011-09-30 2016-04-26 Cirrus Logic, Inc. Sidetone management in an adaptive noise canceling (ANC) system including secondary path modeling
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
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
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
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
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)
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
US9215749B2 (en) 2013-03-14 2015-12-15 Cirrus Logic, Inc. Reducing an acoustic intensity vector with adaptive noise cancellation with two error microphones
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
US9635480B2 (en) 2013-03-15 2017-04-25 Cirrus Logic, Inc. Speaker impedance monitoring
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
US9502020B1 (en) 2013-03-15 2016-11-22 Cirrus Logic, Inc. Robust adaptive noise canceling (ANC) in a personal audio device
US9467776B2 (en) 2013-03-15 2016-10-11 Cirrus Logic, Inc. Monitoring of speaker impedance to detect pressure applied between mobile device and ear
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
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
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
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
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
US9552805B2 (en) * 2014-12-19 2017-01-24 Cirrus Logic, Inc. Systems and methods for performance and stability control for feedback adaptive noise cancellation
KR101695150B1 (ko) 2015-08-18 2017-01-11 김상원 벽난로용 로스톨
JP6964581B2 (ja) 2015-08-20 2021-11-10 シーラス ロジック インターナショナル セミコンダクター リミテッド 固定応答フィルタによって部分的に提供されるフィードバック応答を有するフィードバック適応雑音消去（ａｎｃ）コントローラおよび方法
US9578415B1 (en) 2015-08-21 2017-02-21 Cirrus Logic, Inc. Hybrid adaptive noise cancellation system with filtered error microphone signal
US9923550B2 (en) 2015-09-16 2018-03-20 Bose Corporation Estimating secondary path phase in active noise control
US9773491B2 (en) 2015-09-16 2017-09-26 Bose Corporation Estimating secondary path magnitude in active noise control
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
US10475471B2 (en) * 2016-10-11 2019-11-12 Cirrus Logic, Inc. Detection of acoustic impulse events in voice applications using a neural network
US10242696B2 (en) * 2016-10-11 2019-03-26 Cirrus Logic, Inc. Detection of acoustic impulse events in voice applications

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020003887A1 (en) * 2000-07-05 2002-01-10 Nanyang Technological University Active noise control system with on-line secondary path modeling
CN101000769A (zh) * 2006-01-13 2007-07-18 三星电子株式会社 便携式记录器中消除噪声的装置和方法
US20100014685A1 (en) * 2008-06-13 2010-01-21 Michael Wurm Adaptive noise control system
US20100195844A1 (en) * 2009-01-30 2010-08-05 Markus Christoph Adaptive noise control system
CN101903941A (zh) * 2007-12-21 2010-12-01 沃福森微电子股份有限公司 具有低速率仿真的噪声消除系统
US20110007907A1 (en) * 2009-07-10 2011-01-13 Qualcomm Incorporated Systems, methods, apparatus, and computer-readable media for adaptive active noise cancellation

Family Cites Families (191)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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
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
US5278913A (en) 1992-07-28 1994-01-11 Nelson Industries, Inc. Active acoustic attenuation system with power limiting
KR0130635B1 (ko) 1992-10-14 1998-04-09 모리시타 요이찌 연소 장치의 적응 소음 시스템
GB9222103D0 (en) 1992-10-21 1992-12-02 Lotus Car Adaptive control system
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
US5465413A (en) 1993-03-05 1995-11-07 Trimble Navigation Limited Adaptive noise cancellation
US5425105A (en) 1993-04-27 1995-06-13 Hughes Aircraft Company Multiple adaptive filter active noise canceller
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
JPH07334169A (ja) * 1994-06-07 1995-12-22 Matsushita Electric Ind Co Ltd システム同定装置
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
US5815582A (en) 1994-12-02 1998-09-29 Noise Cancellation Technologies, Inc. Active plus selective headset
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
CN1135753C (zh) 1995-12-15 2004-01-21 皇家菲利浦电子有限公司 自适应噪声抵消装置、减噪系统及收发机
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
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
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
US6278786B1 (en) 1997-07-29 2001-08-21 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
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
EP0973151B8 (en) 1998-07-16 2009-02-25 Panasonic Corporation Noise control system
US6434247B1 (en) 1999-07-30 2002-08-13 Gn Resound A/S Feedback cancellation apparatus and methods utilizing adaptive reference filter mechanisms
US6522746B1 (en) 1999-11-03 2003-02-18 Tellabs Operations, Inc. Synchronization of voice boundaries and their use by echo cancellers in a voice processing system
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
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
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
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
CA2354858A1 (en) 2001-08-08 2003-02-08 Dspfactory Ltd. Subband directional audio signal processing using an oversampled filterbank
DE60336888D1 (de) 2002-01-12 2011-06-09 Oticon As Gegenüber windgeräuschen unempfindliches hörgerät
US8942387B2 (en) 2002-02-05 2015-01-27 Mh Acoustics Llc Noise-reducing directional microphone array
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
WO2004009007A1 (en) 2002-07-19 2004-01-29 The Penn State Research Foundation A linear independent method for noninvasive online secondary path modeling
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
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
EP1599992B1 (en) 2003-02-27 2010-01-13 Telefonaktiebolaget L M Ericsson (Publ) Audibility enhancement
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
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
DE602004015242D1 (de) 2004-03-17 2008-09-04 Harman Becker Automotive Sys Geräuschabstimmungsvorrichtung, Verwendung derselben und Geräuschabstimmungsverfahren
US7492889B2 (en) 2004-04-23 2009-02-17 Acoustic Technologies, Inc. Noise suppression based on bark band wiener filtering and modified doblinger noise estimate
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
EP1629808A1 (en) 2004-08-25 2006-03-01 Phonak Ag Earplug and method for manufacturing the same
CA2481629A1 (en) 2004-09-15 2006-03-15 Dspfactory Ltd. Method and system for active noise cancellation
JP2006197075A (ja) 2005-01-12 2006-07-27 Yamaha Corp マイクロフォンおよび拡声装置
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
EP1732352B1 (en) 2005-04-29 2015-10-21 Nuance Communications, Inc. Detection and suppression of wind noise in microphone signals
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
US7744082B2 (en) 2005-06-14 2010-06-29 Glory Ltd. Paper-sheet feeding device with kicker roller
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
US8019103B2 (en) 2005-08-02 2011-09-13 Gn Resound A/S 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
US8472682B2 (en) 2005-09-12 2013-06-25 Dvp 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
JPWO2007046435A1 (ja) 2005-10-21 2009-04-23 パナソニック株式会社 騒音制御装置
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
GB2479674B (en) 2006-04-01 2011-11-30 Wolfson Microelectronics Plc 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
US20070297620A1 (en) 2006-06-27 2007-12-27 Choy Daniel S J Methods and Systems for Producing a Zone of Reduced Background Noise
US8126161B2 (en) 2006-11-02 2012-02-28 Hitachi, Ltd. Acoustic echo canceller system
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
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
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
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
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
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
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
KR101409169B1 (ko) 2007-09-05 2014-06-19 삼성전자주식회사 억제 폭 조절을 통한 사운드 줌 방법 및 장치
EP2206358B1 (en) 2007-09-24 2014-07-30 Sound Innovations, LLC In-ear digital electronic noise cancelling and communication device
ATE518381T1 (de) 2007-09-27 2011-08-15 Harman Becker Automotive Sys Automatische bassregelung
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
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
GB0725108D0 (en) 2007-12-21 2008-01-30 Wolfson Microelectronics Plc Slow rate adaption
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
ATE520199T1 (de) 2008-01-25 2011-08-15 Nxp Bv Verbesserungen an oder im zusammenhang mit funkempfängern
US8374362B2 (en) 2008-01-31 2013-02-12 Qualcomm Incorporated Signaling microphone covering to the user
US8194882B2 (en) 2008-02-29 2012-06-05 Audience, Inc. System and method for providing single microphone noise suppression fallback
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
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
US8170494B2 (en) 2008-06-12 2012-05-01 Qualcomm Atheros, Inc. Synthesizer and modulator for a wireless transceiver
GB2461315B (en) 2008-06-27 2011-09-14 Wolfson Microelectronics Plc Noise cancellation system
WO2010002676A2 (en) 2008-06-30 2010-01-07 Dolby Laboratories Licensing Corporation Multi-microphone voice activity detector
JP2010023534A (ja) 2008-07-15 2010-02-04 Panasonic Corp 騒音低減装置
CN102113346B (zh) 2008-07-29 2013-10-30 杜比实验室特许公司 用于电声通道的自适应控制和均衡的方法
US8290537B2 (en) 2008-09-15 2012-10-16 Apple Inc. Sidetone adjustment based on headset or earphone type
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
US9020158B2 (en) 2008-11-20 2015-04-28 Harman International Industries, Incorporated Quiet zone control system
US8135140B2 (en) 2008-11-20 2012-03-13 Harman International Industries, Incorporated System for active noise control with audio signal compensation
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
US8548176B2 (en) 2009-02-03 2013-10-01 Nokia Corporation Apparatus including microphone arrangements
WO2010117714A1 (en) 2009-03-30 2010-10-14 Bose Corporation Personal acoustic device position determination
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
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
US8345888B2 (en) 2009-04-28 2013-01-01 Bose Corporation Digital high frequency phase compensation
US8315405B2 (en) 2009-04-28 2012-11-20 Bose Corporation Coordinated ANR reference sound compression
US8184822B2 (en) 2009-04-28 2012-05-22 Bose Corporation ANR signal processing topology
US20100296666A1 (en) 2009-05-25 2010-11-25 National Chin-Yi University Of Technology Apparatus and method for noise cancellation in voice communication
US8218779B2 (en) 2009-06-17 2012-07-10 Sony Ericsson Mobile Communications Ab Portable communication device and a method of processing signals therein
KR101816667B1 (ko) 2009-10-28 2018-01-09 페어차일드 세미컨덕터 코포레이션 액티브 노이즈 제거 시스템 및 방법
US8401200B2 (en) 2009-11-19 2013-03-19 Apple Inc. Electronic device and headset with speaker seal evaluation capabilities
US8385559B2 (en) 2009-12-30 2013-02-26 Robert Bosch Gmbh Adaptive digital noise canceller
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
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
US9099077B2 (en) 2010-06-04 2015-08-04 Apple Inc. Active noise cancellation decisions using a degraded reference
US8515089B2 (en) 2010-06-04 2013-08-20 Apple Inc. Active noise cancellation decisions in a portable audio device
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
WO2011159858A1 (en) 2010-06-17 2011-12-22 Dolby Laboratories Licensing Corporation Method and apparatus for reducing the effect of environmental noise on listeners
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
GB2484722B (en) 2010-10-21 2014-11-12 Wolfson Microelectronics Plc Noise cancellation system
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
KR101909432B1 (ko) 2010-12-03 2018-10-18 씨러스 로직 인코포레이티드 개인용 오디오 디바이스에서 적응형 잡음 제거기의 실수 제어
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
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
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
US9076431B2 (en) 2011-06-03 2015-07-07 Cirrus Logic, Inc. Filter architecture for an adaptive noise canceler in a personal audio device
US8948407B2 (en) 2011-06-03 2015-02-03 Cirrus Logic, Inc. Bandlimiting anti-noise in personal audio devices having adaptive noise cancellation (ANC)
US8958571B2 (en) 2011-06-03 2015-02-17 Cirrus Logic, Inc. MIC covering detection in personal audio devices
US8848936B2 (en) 2011-06-03 2014-09-30 Cirrus Logic, Inc. Speaker damage prevention in adaptive noise-canceling personal audio devices
US9318094B2 (en) 2011-06-03 2016-04-19 Cirrus Logic, Inc. Adaptive noise canceling architecture for 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)
US10107887B2 (en) 2012-04-13 2018-10-23 Qualcomm Incorporated Systems and methods for displaying a user interface
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
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
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
US9330652B2 (en) 2012-09-24 2016-05-03 Apple Inc. Active noise cancellation using multiple reference microphone signals
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

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020003887A1 (en) * 2000-07-05 2002-01-10 Nanyang Technological University Active noise control system with on-line secondary path modeling
CN101000769A (zh) * 2006-01-13 2007-07-18 三星电子株式会社 便携式记录器中消除噪声的装置和方法
CN101903941A (zh) * 2007-12-21 2010-12-01 沃福森微电子股份有限公司 具有低速率仿真的噪声消除系统
US20100014685A1 (en) * 2008-06-13 2010-01-21 Michael Wurm Adaptive noise control system
US20100195844A1 (en) * 2009-01-30 2010-08-05 Markus Christoph Adaptive noise control system
US20110007907A1 (en) * 2009-07-10 2011-01-13 Qualcomm Incorporated Systems, methods, apparatus, and computer-readable media for adaptive active noise cancellation

Also Published As

Publication number Publication date
US9082387B2 (en) 2015-07-14
CN104272378B9 (zh) 2017-12-01
IN2014KN02634A (zh) 2015-05-08
JP6196292B2 (ja) 2017-09-13
WO2013169436A2 (en) 2013-11-14
EP2847759B1 (en) 2019-02-27
JP2015520869A (ja) 2015-07-23
EP2847759A2 (en) 2015-03-18
CN104272378B (zh) 2017-07-25
WO2013169436A3 (en) 2014-05-22
KR102032112B1 (ko) 2019-10-15
WO2013169436A9 (en) 2014-07-03
US20130301842A1 (en) 2013-11-14
KR20150008472A (ko) 2015-01-22

Similar Documents

Publication Publication Date Title
CN104272378A (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
CN104272379A (zh) 在适应性噪音消除系统中的抗噪音产生器响应和次级路径响应的顺序调适
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
JP6208792B2 (ja) パーソナルオーディオデバイスのノイズキャンセリングにおける耳結合検出および適合的応答の調節
CN105378827B (zh) 包括次级路径估算监视的适应性噪音消除的系统和方法
EP2847758B1 (en) Downlink tone detection and adaption of a secondary path response model in an adaptive noise canceling system
CN105308678B (zh) 混合适应性噪音消除的系统和方法
US9208771B2 (en) Ambient noise-based adaptation of secondary path adaptive response in noise-canceling personal audio devices
KR20150143800A (ko) 잡음 방지 레벨의 바이어싱에 의한 적응적 잡음 소거를 위한 방법들 및 시스템들
CN104303228A (zh) 在噪音消除个人音频设备中误差信号含量控制的次级和泄漏路径模型的调适
KR20160020508A (ko) 협대역 잡음의 검출 및 소거를 위한 방법들 및 시스템들
CN104272380A (zh) 在具有适应性噪音消除(anc)的个人音频设备中的频率和方向相关周围声音处理
US9325821B1 (en) Sidetone management in an adaptive noise canceling (ANC) system including secondary path modeling

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
CI03 Correction of invention patent
CI03 Correction of invention patent

Correction item: Claims

Correct: Zheng Que

False: Cuo Wu

Number: 30-01

Page: Quan Wen

Volume: 33