CN103718238B - 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 - Google Patents

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 Download PDF

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CN103718238B
CN103718238B CN201280038454.7A CN201280038454A CN103718238B CN 103718238 B CN103718238 B CN 103718238B CN 201280038454 A CN201280038454 A CN 201280038454A CN 103718238 B CN103718238 B CN 103718238B
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N·卡瓦特拉
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Cirrus Logic Inc
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Abstract

一种个人语音设备，例如无线电话，包括噪音消除电路（30），其适应性地从参考麦克风信号（ref）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（err）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。次级路径估计适应性滤波器（SE,SECOPY）使用来估计从噪音消除电路穿过传感器的电声音路径以便可以从误差信号去除源语音（ds）。噪音（37）或者连续并且低于源语音听不见地、或者响应于检测到源语音幅度较低，被注入，以便可以与源语音的存在和幅度无关地维持次级路径估计适应性滤波器的调适。

Description

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
技术领域
本发明总体上涉及一种包括适应性噪音消除（ANC）的人语音设备例如无线电话，并且更具体地，涉及在当源语音不存在或幅度较低时使用注入噪音来提供次级路径估计的连续调适的个人语音设备中的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。
噪音消除操作可以通过在传感器处测量设备的传感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。传感器的测量输出理想地是源语音，例如在电话中的下行链路语音，和/或在专用语音播放器或电话中的播放音频，因为噪音消除信号在传感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语音，从传感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语音到正确相位和幅度以从误差麦克风信号减去。然而，当源语音不存在时，次级路径估计通常不能被更新。
因此，需提供一种利用次级路径估计提供噪音消除来测量传感器的输出并且可以独立于足够幅度的源语音是否存在来连续地调适次级路径估计的个人语音设备，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一种个人语音设备的上述目的，该一种个人语音设备提供包括不管是否存在足够幅度的源语音都可以被连续调适的次级路径估计的噪音消除。
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音频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音频声音的参考麦克风信号。个人语音设备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音频声音的显著消除。包含误差麦克风用于控制抗噪音信号的调适以消除周围音频声音以及用于校正从处理电路的输出穿过传感器的电声音路径。ANC处理电路连续地或至少当源语音（例如在电话中的下行链路语音和/或在媒体播放器或电话中的播放音频）处于次级路径估计适应性滤波器不能正确地连续调适的这样低的位准时，注入在足够低于非常不明显的源语音位准的位准的噪音。
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为描绘根据本发明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测量周围语音和在传感器处的传感器输出，从而给出噪音消除效果的指示。次级路径估计适应性滤波器被用来从误差麦克风信号中去除播放音频以便产生误差信号。然而，取决于由个人语音设备重现的语音信号，例如在电话通话期间的下行链路语音或来自媒体文件/连接的播放音频，的存在（和位准），次级路径适应性滤波器可以不能够连续调适来估计次级路径。因此，本发明使用注入噪音来提供足够的能量用于次级路径估计适应性滤波器连续调适，同时保持对听者不明显的位准。
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，该单个集成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。
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。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（包含特定声环境中扬声器SPKR与误差麦克风E之间的耦合），S(z)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。
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。CODECIC20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ia、ANC电路30所产生的抗噪音信号anti-noise（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。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在下行链路语音ds和内部语音ia两者都不存在或者幅度较低时将噪音添加到包括下行链路语音ds和内部语音ia的组合声音语音信号或者用注入噪音信号取代源语音（ds+ia）。下行链路语音ds、内部语音ia和噪音（或者源语音/噪音，如果使用为替代信号）提供给组合器26，以便信号（ds+ia+噪音）总是存在以利于在ANC电路30中的次级路径适应性滤波器估计语音路径P(z)。近端语音信号ns也提供至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anti-noise，其被提供到将抗噪音信号与由传感器重现的语音组合的输出组合器，例如有图2的组合器26示例。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。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)的估计的拷贝变换参考麦克风信号ref，并且在去除由于源语音回放的误差麦克风信号err的分量后，将误差麦克风信号err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，与滤波器34B的输出一起由W系数控制块31处理的另一信号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和内部语音ia，其中响应SECOPY(z)是一拷贝。通过注入相反数量的源语音，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的源语音，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和内部语音ia的反向拷贝，在处理前从误差麦克风信号err去除的源语音应与误差麦克风信号err重现的下行链路语音信号ds和内部语音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语音信号ds和内部语音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，而是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系数控制块33控制的系数，该SE系数控制块33在由组合器36去除上述经过滤的下行链路语音信号ds和内部语音ia之后，处理源语音（ds+ia）和误差麦克风信号err，上述经过滤的下行链路语音信号ds和内部语音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的预期源语音。适应性滤波器34A因此被调适来从下行链路语音信号ds和内部语音ia产生信号，该适应性滤波器34A当从误差麦克风信号err中被减去时，包含误差麦克风信号err不由于源语音（ds+ia）的含量。然而，如果下行链路语音信号ds和内部语音ia都不存在，或者具有非常小的幅度，那么SE系数控制块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，源语音检测器35检测是否有足够的源语音（ds+ia）存在，并且如果有足够的源语音（ds+ia）存在，那么更新次级路径估计。源语音检测器35可以由语音存在信号（如果该信号可以从下行链路语音信号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。如果源语音（ds+ia）不存在或者幅度较低，选择器38选择噪音产生器37的输出，该噪音产生器37提供输出ds+ia/噪音给图2的组合器26，并且提供输入给次级路径适应性滤波器34A和SE系数控制块33，允许ANC电路30维持估计声路径S(z)。替代地，选择器38可以用将噪音信号添加到源语音（ds+ia）的组合器替代。
当源语音（ds+ia）不存在时，图1的扬声器SPKR实际上将重现从噪音产生器37注入的噪音，从而设备的使用者会不期望地听到注入噪音。因此，ANC电路30包括将次级路径适应性滤波器34A的输出与误差麦克风信号err比较的信号位准比较器39。次级路径适应性滤波器34A的输出提供使用者实际上听到的下行链路语音信号ds或注入噪音的良好估计，因为由次级路径适应性滤波器34A估计的声路径S(z)是从扬声器SPKR到误差麦克风E的路径。误差麦克风信号err然后被用来确定比较阈值，因为误差麦克风信号err是使用者听到的总能量的测量值。作为替代，可以使用预定或其他动态阈值，例如从参考麦克风信号ref或近端语音信号ns确定的阈值。例如将次级路径适应性滤波器34A的输出的位准维持在比误差麦克风信号err的相应标准化位准低20dB的标准可以使用来调节利用增益控制A2对噪音产生器37的输出的增益，或者被用来进一步调理由选择器38对噪音产生器37的输出的选择，以便当次级路径适应性滤波器34A的输出幅度相当于误差麦克风信号err变得太大时停止噪音注入。次级路径适应性滤波器34A的输出幅度和误差麦克风信号err可以由例如最小均方、平方器、绝对值峰值检测器或取样器的方法来确定。下面控制方程可以用来调节应用到注入噪音的增益：
gain(i)=gain(i-1)+(mag(err)/atten–mag(seout))其中i是步进间隔，atten是误差信号的幅度与噪音的期望比例（期望衰减，例如20dB），ampl(err)是误差信号的幅度，以及mag(seout)是次级路径适应性滤波器34A的输出幅度。
现参考图4，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的所待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。
在图4所描绘的系统中，通过路径S(z)的响应的估计的拷贝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的输出通过降低取样器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。滤波器51本身并非适应性滤波器，但是具有经调谐以匹配滤波器55A与55B的组合响应的可调整响应，使得滤波器51的响应追踪SE(z)的调适。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取样至一半以产生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)的源语言（ds+ia）的数量从误差麦克风信号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。通过另外并列一组滤波器级55A及55B产生响应S(z)，其中一个滤波器级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。滤波器51为适应性滤波器55A/55B的拷贝，但本身并非适应性滤波器，即滤波器51不单独响应于其自身的输出而调适且滤波器51可用单级或双级实施。在图4的系统中提供单独控制值以控制滤波器51的响应，该滤波器51展示为单个适应性滤波器级。但是，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滤波器51的实施方案中的可调整滤波器部分。
如在图3的ANC电路30中，滤波器级55A及滤波器级55B的输入具有当由选择器38选择时利用增益控制A2控制的增益从声音语音（ds+ia）或噪音产生器37的输出选择的分量，其输出提供给组合器46D的输入，该组合器46D添加已经由∑-△ADC41B产生并通过侧音衰减器56过滤的近端麦克风信号ns的一部分以防止回馈状况。组合器46D的输出为经由∑-△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。信号位准比较器39将组合器46C的输出（其是由滤波器级55A及55B形成的次级路径适应性滤波器的输出）与误差麦克风信号err比较，并且配合比较的结果控制经由增益控制A2施加噪音产生器37的输出的增益。语音检测器35控制选择器是否选择源语音（ds+ia）或如在图3的ANC电路30中的增益控制A2的输出。至泄漏LMS控制块54B的输入也为基频，该输入为由通过取样至1/32的取样器52B取样由选择器38提供的所选源语音/噪音提供，并且另一输入提供取样组合器46C的输出来提供，该组合器46C的输出已从误差麦克风信号err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。如上所述，选择器38可以替代地可以由将噪音信号与源语音（ds+ia）组合的组合器替代。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52C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52B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及滤波器51而赋予的分接头灵活性。
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，软静音器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。
图4的系统以及图2和图3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 (24)

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音频声音在该传感器的声输出中的影响的抗噪音信号的两者；
第一合成器，用于合成包括源语音的源语音信号和所述抗噪音信号，以提供输出信号由所述传感器重现；
参考麦克风，其为安装在该外壳上用于提供指示所述周围音频声音的参考麦克风信号；
误差麦克风，其为安装在传感器附近的壳体中用于提供指示传感器的输出和在传感器处的周围音频声音的误差麦克风信号；
可控噪音源，用于提供噪音信号；
源语音检测器，其具有耦合到所述源语音信号的输入，用于确定足够幅度的源语音是否存在于所述源语音信号中；以及
处理电路，其从所述参考麦克风产生与误差信号及参考麦克风信号一致的抗噪音信号以减少由听者听到的周围音频声音的存在，其中处理电路执行具有将源语音塑形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塑形后的源语音以提供误差信号的第二合成器，并且其中所述处理电路响应于源语音检测器确定不存在足够幅度的源语音，选择性地将来自噪音产生器的噪音注入到次级路径适应性滤波器，并且进一步将噪音注入所述第一合成器替代或结合所述源语音信号，以导致当源语音不存在或者已经降低幅度时次级路径适应性滤波器继续调适，并且其中所述处理电路还与所述次级路径适应性滤波器的输出一致地控制可控噪音源。
2.如权利要求1所述的个人语音设备，其中所述处理电路测量次级路径适应性滤波器的输出幅度，并且如果所述次级路径适应性滤波器的输出幅度超过阈值幅度时，改变可控噪音源。
3.如权利要求2所述的个人语音设备，其中如果次级路径适应性滤波器的输出幅度超过阈值幅度时，处理电路调整施加到噪音信号的增益。
4.如权利要求2所述的个人语音设备，其中如果次级路径适应性滤波器的输出幅度超过阈值幅度时，处理电路禁止噪音信号的注入。
5.如权利要求2所述的个人语音设备，其中处理电路还从误差信号的幅度确定阈值幅度，其中阈值幅度根据误差信号的幅度动态地调整。
6.如权利要求5所述的个人语音设备，其中阈值幅度为比误差信号的幅度低20dB的位准。
7.如权利要求1所述的个人语音设备，其中处理电路检测源语音的幅度为小于阈值幅度，并且如果源语音的幅度为小于阈值幅度时仅改变可控噪音源。
8.如权利要求1所述的个人语音设备，其中处理电路执行具有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的响应的适应性滤波器，其中处理电路塑形与误差信号及参考麦克风信号一致的适应性滤波器的响应。
9.一种消除在个人语音设备的传感器附近的周围音频声音的方法，所述方法包括：
用参考麦克风测量周围音频声音以产生参考麦克风信号的第一测量；
用误差麦克风测量传感器的输出和在传感器处的周围音频声音的第二测量；
从第一测量和第二测量的结果适应性产生抗噪音信号用于对抗在传感器的语音输出处的周围音频声音的效果；
将抗噪音信号与源语音信号组合来产生提供给传感器的语音信号；
利用次级路径响应塑形源语音的拷贝；
从误差麦克风信号去除塑形源语音的拷贝的结果以产生指示组合抗噪声和输送到听者的周围音频声音的误差信号；
产生噪音信号；
使用具有耦合到所述源语音信号的输入的源语音检测器来确定源语音信号中是否存在足够幅度的源语音；
响应于足够幅度的源语音不存在，以及
响应于确定不存在足够幅度的源语音，选择性地将噪音信号注入到所述次级路径适应性滤波器，且其中所述组合进一步将所述噪音替代或结合所述源语音以导致当源语音不存在或者已经降低幅度时所述次级路径适应性滤波器继续调适；以及
与所述次级路径适应性滤波器的输出一致地控制可控噪音源。
10.如权利要求9所述的方法，还包括测量次级路径适应性滤波器的输出幅度，并且如果次级路径适应性滤波器的输出幅度超过阈值幅度时，控制可控噪音源调整可控噪音源。
11.如权利要求10所述的方法，其中如果次级路径适应性滤波器的输出幅度超过阈值幅度时，控制可控噪音源调整施加到噪音信号的增益。
12.如权利要求10所述的方法，其中如果次级路径适应性滤波器的输出幅度超过阈值幅度时，控制可控噪音源禁止噪音信号的注入。
13.如权利要求10所述的方法，还包括从误差信号的幅度确定阈值幅度，其中阈值幅度根据误差信号的幅度动态地调整。
14.如权利要求13所述的方法，其中阈值幅度为比误差信号的幅度低20dB的位准。
15.如权利要求9所述的方法，还包括检测源语音的幅度为小于阈值幅度，并且其中如果源语音的幅度为小于阈值幅度时，控制可控噪音源仅改变可控噪音源。
16.如权利要求9所述的方法，其中适应性产生调适适应性滤波器的响应，该适应性滤波器过滤参考麦克风的输出以产生抗噪音信号来减少由听者听到的周围音频声音的存在，其中适应性产生塑形与误差信号及参考麦克风信号一致的适应性滤波器的响应。
17.一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回放的源语音及用于对抗周围音频声音在该传感器的声输出中的影响的抗噪音信号的两者；
第一合成器，用于合成包括源语音的源语音信号和所述抗噪音信号，以提供输出信号由所述传感器重现；
参考麦克风输入，用于接收指示所述周围音频声音的参考麦克风信号；
误差麦克风输入，用于接收指示传感器的语音输出的和在传感器处的周围音频声音的误差麦克风信号；
可控噪音源，用于提供噪音信号；
源语音检测器，其具有耦合到所述源语音信号的输入，用于确定足够幅度的源语音是否存在于所述源语音信号中；以及
处理电路，其从所述参考麦克风产生与误差信号及参考麦克风信号一致的抗噪音信号以减少由听者听到的周围音频声音的存在，其中处理电路执行具有将源语音塑形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塑形后的源语音以提供误差信号的第二合成器，并且其中所述处理电路响应于源语音检测器确定不存在足够幅度的源语音，选择性地将来自噪音产生器的噪音注入到次级路径适应性滤波器，并且进一步将噪音注入所述第一合成器替代或结合所述源语音信号，以导致当源语音不存在或者已经降低幅度时次级路径适应性滤波器继续调适，并且其中所述处理电路还与次级路径适应性滤波器的输出一致地控制可控噪音源。
18.如权利要求17所述的集成电路，其中处理电路测量次级路径适应性滤波器的输出幅度并且如果次级路径适应性滤波器的输出幅度超过阈值幅度时改变可控噪音源。
19.如权利要求18所述的集成电路，其中如果次级路径适应性滤波器的输出幅度超过阈值幅度时，处理电路调整施加到噪音信号的增益。
20.如权利要求18所述的集成电路，其中如果次级路径适应性滤波器的输出幅度超过阈值幅度时，处理电路禁止噪音信号的注入。
21.如权利要求18所述的集成电路，其中处理电路还从误差信号的幅度确定阈值幅度，其中阈值幅度根据误差信号的幅度动态地调整。
22.如权利要求21所述的集成电路，其中阈值幅度为比误差信号的幅度低20dB的位准。
23.如权利要求17所述的集成电路，其中处理电路检测源语音的幅度为小于阈值幅度，并且如果源语音的幅度为小于阈值幅度时仅改变可控噪音源。
24.如权利要求17所述的集成电路，其中处理电路执行具有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的响应的适应性滤波器，其中处理电路塑形与误差信号及参考麦克风信号一致的适应性滤波器的响应。
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Families Citing this family (57)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012075343A2 (en) 2010-12-03 2012-06-07 Cirrus Logic, Inc. Oversight control of an adaptive noise canceler in a personal audio device
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
US9824677B2 (en) 2011-06-03 2017-11-21 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
US8958571B2 (en) 2011-06-03 2015-02-17 Cirrus Logic, Inc. MIC covering detection in personal audio devices
US9318094B2 (en) 2011-06-03 2016-04-19 Cirrus Logic, Inc. Adaptive noise canceling architecture for 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)
US9076431B2 (en) 2011-06-03 2015-07-07 Cirrus Logic, Inc. Filter architecture for an adaptive noise canceler in 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
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
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
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
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)
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
US9532139B1 (en) 2012-09-14 2016-12-27 Cirrus Logic, Inc. Dual-microphone frequency amplitude response self-calibration
US9330652B2 (en) * 2012-09-24 2016-05-03 Apple Inc. Active noise cancellation using multiple reference microphone signals
US9050212B2 (en) * 2012-11-02 2015-06-09 Bose Corporation Binaural telepresence
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
US9324311B1 (en) 2013-03-15 2016-04-26 Cirrus Logic, Inc. Robust adaptive noise canceling (ANC) in 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
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
US9478210B2 (en) 2013-04-17 2016-10-25 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
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
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
US10382864B2 (en) 2013-12-10 2019-08-13 Cirrus Logic, Inc. Systems and methods for providing adaptive playback equalization in an audio device
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
WO2017029550A1 (en) 2015-08-20 2017-02-23 Cirrus Logic International Semiconductor Ltd Feedback adaptive noise cancellation (anc) controller and method having a feedback response partially provided by a fixed-response filter
US9578415B1 (en) * 2015-08-21 2017-02-21 Cirrus Logic, Inc. Hybrid adaptive noise cancellation system with filtered error microphone signal
KR101699339B1 (ko) * 2015-09-14 2017-01-24 전자부품연구원 오디오 신호 출력 장치 및 이의 능동 소음 제어 방법
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
US10276145B2 (en) * 2017-04-24 2019-04-30 Cirrus Logic, Inc. Frequency-domain adaptive noise cancellation system
CN109313912B (zh) * 2017-04-24 2023-11-07 马克西姆综合产品公司 用于通过基于信号电平来禁用滤波器元件以减少音频系统的功耗的系统和方法
DE102020113135A1 (de) * 2020-05-14 2021-11-18 Infineon Technologies Ag Vorrichtungen und verfahren für sicherheitsmechanismen
IL298211A (en) * 2020-05-18 2023-01-01 Waves Audio Ltd Control of an electrostatic acoustic device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101354885A (zh) * 2007-01-16 2009-01-28 哈曼贝克自动系统股份有限公司 主动噪声控制系统
CN101763858A (zh) * 2009-10-19 2010-06-30 瑞声声学科技(深圳)有限公司 双麦克风信号处理方法

Family Cites Families (207)

* 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
US5359662A (en) 1992-04-29 1994-10-25 General Motors Corporation Active noise control system
US5321759A (en) 1992-04-29 1994-06-14 General Motors Corporation Active noise control system for attenuating engine generated noise
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
AU7355594A (en) 1993-06-23 1995-01-17 Noise Cancellation Technologies, Inc. Variable gain active noise cancellation system with improved residual noise sensing
US7103188B1 (en) 1993-06-23 2006-09-05 Owen Jones Variable gain active noise cancelling system with improved residual noise sensing
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
KR19980702171A (ko) 1995-12-15 1998-07-15 요트. 게. 아. 롤페즈 적응잡음 제거장치, 잡음감소 시스템과 트랜시버
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
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
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
DE69939796D1 (de) 1998-07-16 2008-12-11 Matsushita Electric Ind Co Ltd Lärmkontrolleanordnung
US6434247B1 (en) 1999-07-30 2002-08-13 Gn Resound A/S Feedback cancellation apparatus and methods utilizing adaptive reference filter mechanisms
WO2001019130A2 (en) 1999-09-10 2001-03-15 Starkey Laboratories, Inc. Audio signal processing
AU1359601A (en) 1999-11-03 2001-05-14 Tellabs Operations, Inc. Integrated voice processing system for packet networks
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
SG106582A1 (en) * 2000-07-05 2004-10-29 Univ Nanyang Active noise control system with on-line secondary path modeling
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
WO2003059010A1 (en) 2002-01-12 2003-07-17 Oticon A/S Wind noise insensitive hearing aid
WO2007106399A2 (en) 2006-03-10 2007-09-20 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
AU2003261203A1 (en) 2002-07-19 2004-02-09 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
US7885420B2 (en) 2003-02-21 2011-02-08 Qnx Software Systems Co. Wind noise suppression system
US7895036B2 (en) 2003-02-21 2011-02-22 Qnx Software Systems Co. System for suppressing wind noise
JP4699988B2 (ja) 2003-02-27 2011-06-15 テレフオンアクチーボラゲット エル エム エリクソン（パブル） 可聴性の改善
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
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
ATE402468T1 (de) 2004-03-17 2008-08-15 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
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
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
CA2611937C (en) 2005-06-14 2014-07-15 Glory Ltd. Singulation enhanced paper-sheet feeder 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
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
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
US7903825B1 (en) 2006-03-03 2011-03-08 Cirrus Logic, Inc. Personal audio playback device having gain control responsive to environmental sounds
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
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
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
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
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
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
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
EP2051543B1 (en) 2007-09-27 2011-07-27 Harman Becker Automotive Systems GmbH Automatic bass management
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
GB0725111D0 (en) 2007-12-21 2008-01-30 Wolfson Microelectronics Plc Lower rate emulation
GB0725108D0 (en) 2007-12-21 2008-01-30 Wolfson Microelectronics Plc Slow rate adaption
GB0725110D0 (en) 2007-12-21 2008-01-30 Wolfson Microelectronics Plc Gain control based on noise level
GB0725115D0 (en) 2007-12-21 2008-01-30 Wolfson Microelectronics Plc Split filter
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
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
EP2133866B1 (en) 2008-06-13 2016-02-17 Harman Becker Automotive Systems GmbH Adaptive noise control system
GB2461315B (en) 2008-06-27 2011-09-14 Wolfson Microelectronics Plc Noise cancellation system
EP2297727B1 (en) 2008-06-30 2016-05-11 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
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
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
JP5709760B2 (ja) 2008-12-18 2015-04-30 コーニンクレッカ フィリップス エヌ ヴェ オーディオノイズキャンセリング
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
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
EP2237573B1 (en) 2009-04-02 2021-03-10 Oticon A/S Adaptive feedback cancellation method and apparatus therefor
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
US8184822B2 (en) 2009-04-28 2012-05-22 Bose Corporation ANR signal processing topology
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
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
US8737636B2 (en) * 2009-07-10 2014-05-27 Qualcomm Incorporated Systems, methods, apparatus, and computer-readable media for adaptive active noise cancellation
US8750531B2 (en) 2009-10-28 2014-06-10 Fairchild Semiconductor Corporation Active noise cancellation
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
US9053697B2 (en) 2010-06-01 2015-06-09 Qualcomm Incorporated Systems, methods, devices, apparatus, and computer program products for audio equalization
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
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
JP5629372B2 (ja) 2010-06-17 2014-11-19 ドルビー ラボラトリーズ ライセンシング コーポレイション 聴取者に対する環境雑音の効果を低減させる方法および装置
US20110317848A1 (en) 2010-06-23 2011-12-29 Motorola, Inc. Microphone Interference Detection Method and Apparatus
GB2484722B (en) 2010-10-21 2014-11-12 Wolfson Microelectronics Plc Noise cancellation system
JP2014502442A (ja) 2010-11-05 2014-01-30 セミコンダクター アイディアズ トゥー ザ マーケット（アイ ティー オー エム）ビー ヴィ ステレオ信号に含まれているノイズを減少させる方法、その方法を用いるステレオ信号処理デバイス及びｆｍ受信器
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
WO2012075343A2 (en) 2010-12-03 2012-06-07 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
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
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)
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
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)
US10107887B2 (en) 2012-04-13 2018-10-23 Qualcomm Incorporated Systems and methods for displaying a user interface
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
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
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)
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
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
US9058801B2 (en) 2012-09-09 2015-06-16 Apple Inc. Robust process for managing filter coefficients in adaptive noise canceling systems
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
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101354885A (zh) * 2007-01-16 2009-01-28 哈曼贝克自动系统股份有限公司 主动噪声控制系统
CN101763858A (zh) * 2009-10-19 2010-06-30 瑞声声学科技(深圳)有限公司 双麦克风信号处理方法

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