CN106205595A - 一种用于个人音频设备的自适应噪声消除框架结构 - Google Patents

一种用于个人音频设备的自适应噪声消除框架结构 Download PDF

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CN106205595A
CN106205595A CN201610542543.5A CN201610542543A CN106205595A CN 106205595 A CN106205595 A CN 106205595A CN 201610542543 A CN201610542543 A CN 201610542543A CN 106205595 A CN106205595 A CN 106205595A
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J·D·亨德里克斯
G·D·卡马斯
N·卡瓦特拉
阿里·阿卜杜拉扎德米拉尼
杰弗里·奥尔德森
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Cirrus Logic Inc
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    • G10K11/1787—General system configurations
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Abstract

一种个人音频设备例如无线电话，包括自适应噪声消除(ANC)电路，其适用于自适应地从参考麦克风信号以及误差麦克风信号中产生抗噪信号，并且输入所述抗噪信号到扬声器换能器的输出以导致消除周围音频声音环境音频声音的消除，其中参考麦克风信号测量周围音频，并且误差麦克风测量换能器及其位置附近的环境音频声音的合成。处理电路使用所述参考麦克风以及误差麦克风以生成抗噪信号，其可以被由操作在ANC系数更新率的倍数上的自适应滤波器生成。下行音频可以通过插值与高数据率抗噪信号合成。在控制路径的高通滤波器减少ANC电路内的DC偏移，并且当下行音频没有被检测到时，ANC系数的适用可以被停止。

Description

一种用于个人音频设备的自适应噪声消除框架结构
本申请是分案申请，其母案申请为中国国家申请号201280027523.4，“一种用于个人音频设备的自适应噪声消除框架结构”，申请日2012年4月30日。
技术领域
本发明主要涉及包含自适应噪声消除(ANC)的个人音频设备例如无线电话，并且更具体地，涉及集成到个人音频设备中的ANC系统的体系结构特征。
背景技术
无线电话例如移动/便携电话、无绳电话，以及其他消费语音设备例如mp3播放器，被广泛使用。这些设备的清晰度相关的性能可以通过提供噪声消除而改进，改噪声消除使用麦克风测量周围环境事件并且然后使用信号处理以插入抗噪信号到设备的输出以消除环境声音事件。
由于个人音频设备例如无线电话周围的声音环境，取决于存在的噪声源以及设备本身的位置，可以剧烈变化，需要调适噪声消除以考虑这些环境变化。然而，自适应噪声消除电路可能变得复杂，消耗额外的能量，并且在特定环境下产生不必要的结果。
因此，需要提供一种包括无线电话的个人音频设备，其提供高效，能耗低，并且/或者复杂度低的噪声消除。
发明内容
通过在一种个人音频设备，操作方法以及集成电路中的实施，实现了提供了具有低能耗和/或低复杂度的噪声消除的个人音频设备。
所述个人音频设备包括壳体，其具有安装在壳体上的换能器，用于重现音频信号，该音频信号包括重放给听者的源音频以及用于补偿换能器声输出中的环境音频声音影响的抗噪信号；其可以包括集成电路以提供自适应噪声消除(ANC)功能。所述方法是操作上述个人音频设备以及集成电路的方法。参考麦克风被安装在壳体上，用于提供指示环境声音的参考麦克风信号。误差麦克风被包含用于控制抗噪信号的调适以消除环境音频声音并且用于修正从处理电路的输出到换能器的环境的电声路径。该个人音频设备进一步包括在壳体内的ANC处理电路，其用于一个或多个自适应滤波器适应地从参考麦克风信号以及参考麦克风中自适应地产生抗噪信号，从而该抗噪信号导致环境音频声音的大量消除。
ANC电路使用自适应滤波器，其生成能够工作在ANC系数更新率的倍数上的抗噪声信号。Σ-Δ调制器可以被包括在更高的采样率的信号路径(s)中以减小自适应滤波器(s)和其他处理模块的宽度。可以在控制路径中包含高通滤波器，以减少在ANC电路中的DC偏移，当下行音频不存在时，可以停止ANC的调适。当下行音频存在时，其可以合成高数据率的插值成的抗噪信号并且ANC的调适被恢复。
如附图中所描述的，从下述的对于本发明的优选实施例的具体描述，本发明前述以及其他的目标、特征以及优点将是十分清楚的。
附图说明
图1是依据本发明的实施例的无线电话10的示意图。
图2是依据本发明的实施例的无线电话10内的电路的框图。
图3是依据本发明的实施例的框图，描述了图2的编解码器集成电路20的ANC电路30内的信号处理电路以及功能模块。
图4是依据本发明的实施例的框图，描述了集成电路内信号处理电路以及功能模块。
图5是依据本发明的另一个实施例的框图，描述了集成电路内信号处理电路以及功能模块。
具体实施方式
本发明包括能够用于例如无线电话的个人音频设备中的噪声消除技术以及集成电路。该个人音频设备包括自适应噪声消除(ANC)电路，其测量周围声音环境并且产生一个信号，该信号被输入到扬声器(或者其它换能器)的输出以消除周围环境事件。提供了一个参考麦克风以测量周围声音环境并且包括一个误差麦克风用于控制抗噪信号的调适以消除环境音频声音并且用于修正从处理电路到换能器的电声路径。产生抗噪信号的自适应滤波器的系数控制可能在远低于自适应滤波器的样本频率的基带频率下工作，降低功率消耗和ANC处理电路的复杂性。高通滤波器可以被包括在提供输入给系数控制的反馈路径中，以在ANC控制回路降低直流(DC)偏移，并且当下行音频缺失时，ANC的自适应可能会停止，从而自适应滤波器的调适在可能导致不稳定的条件下不继续进行。当检测到下行音频，其可以通过在基带上提供以及与更高数据率音频插值而合成，自适应滤波器系数的调适被恢复。
现在参照图1，根据本发明示出的一个实施例无线中电话10靠近人耳5。所示出的无线电话10是依据本发明实施例能够使用的设备的一个示例，但是需要知道的是，不是无线电话10中所有的元件或者构造，或者后续说明中的电路，都是实施权利要求书所述的发明所需要的。无线电话10包括换能器例如扬声器SPKR，其用于重现无线电话所接收的远处语音以及其它本地的声音事件例如铃声、存储声音程序材料、近端语音输入(例如手机用户的语音)以提供平衡的会话感，以及其它需要声音无线电话10重现的声音，例如来自无线电话10接收的网页或者其它网络交互源的声音，以及语音提示例如低电量以及其它系统提示。近端麦克风NS被提供以捕捉近端语音，其被从无线电话10传输到其他会话参与者。
无线电话10包括自适应噪声消除(ANC)电路以及部件，其用于输入抗噪信号到扬声器SPKR以提高扬声器SPKR重现的远处语音以及其它语音的清晰度。参考麦克风R被提供用于测量周围声音环境，并且被放置在远离用户嘴巴的典型位置，从而近端语音在参考麦克风R产生的信号中被最小化。当无线电话10靠近于耳朵5时，提供第3麦克风，误差麦克风E，其通过提供将周围声音环境与临近耳朵5的麦克风SPKR合成的测量，用于进一步改进ANC操作。在无线电话10内的示范电路14包括声音编解码器集成电路20，其接收来自参考麦克风R，近语音麦克风NS以及误差麦克风E的信号并且与其它集成电路(例如包含无线电话收发器的RF合成电路12)交互。在本发明的其它实施例中，这里公开的电路和技术可以并入到单一的包含控制电路以及其它的功能的集成电路以用于实施个人语音设备的整体功能，例如MP3单芯片播放器(player-on-a-chip)的集成电路。
通常，本发明的ANC技术测量影响参考麦克风R的环境声音事件(不同于扬声器SPKR的输出和/或近端语音)，并且也通过测量影响误差麦克风E的同样的环境声音事件，所述无线电话10的ANC处理电路调适由参考麦克风R输出产生的抗噪信号以形成一个特性，该特性最小化了呈现在误差麦克风E的周围环境信号的幅度。由于声音路径P(z)从参考麦克风R延伸到误差麦克风E，ANC电路实质上评估了与电声路径S(z)的消除效应合并的声音路径P(Z)，电声路径S(z)表示编解码器IC20的音频输出电路的响应以及包括在特定的声音环境中扬声器SPKR与误差麦克风之间的耦合的扬声器SPKR的声/电转换性能，其在无线电话机10没有牢固地压到耳朵5时，被耳朵的周围和结构以及可能靠近无线电话10的其他物理对象以及人的头部结构影响。虽然所示的无线电话机10包括具有第三近语音麦克风NS的双麦克风ANC系统，据本发明的其它实施例，本发明的某些方面可以在不包括独立的误差和参考麦克风的系统中实施，或者本发明其它实施例中无线电话机使用近语音麦克风NS执行参考麦克风R的功能。同样，在只用于音频重放的个人音频设备中，通常不包括近语音麦克风，并且在电路中的近语音信号路径在下面的详述中可以忽略，而没有改变本发明的范围，而不是仅限于提供用于麦克风输入检测方案的选择。
现在参看图2，在无线电话10内的电路如框图所示。编解码器集成电路20包括模数字转换器(ADC)21A，用于接收参考麦克风信号和生成参考麦克风信号的数字表示ref，模数字转换器21B用于接收误差麦克风信号并且生成误差麦克风信号的数字表示err，以及模数字转换器21C用于接收近语音麦克风信号并且生成误差麦克风信号的数字表示ns。编解码器集成电路20生成用于从放大器A1驱动扬声器SPKR的输出，该放大器A1放大数模转换器(DAC)23的输出，该数模转换器(DAC)23接收合成器26的输出。合成器26合成音频信号，从内部音频源24、ANC电路30产生的抗噪信号(其通常具有与参考麦克风消耗ref中的噪声同样的极性，并且因此被合成器扣除)、近端语音信号ns的部分(以便无线电话10的用户听到适当对应于下行语音ds的自己的声音，该下行语音ds被从射频(RF)集成电路22接收并且同样被合成器26合成)。近语音信号ns也被提供给RF集成电路22，并作为上行语音通过天线ANT被发送到服务提供商。
现在参看图3，根据本发明的一个实施例示出ANC电路30的详情。自适应滤波器32接收参考麦克风信号ref并且在理想环境下，将其转换方程W(z)调适为P(z)/S(z)以产生抗噪信号，该抗噪信号被提供给输出合成器，该输出合成器将抗噪信号与换能器重现的音频合成，例如图2中示例的合成器26。自适应滤波器32的系数由W系数控制模块31控制，该W系数控制模块使用两个信号的关联来确定自适应滤波器32的响应，其通常在最小均方根意义上最小化出现在麦克风信号err中的参考麦克风信号ref的信号分量之间的误差。W系数控制模块31所比较的信号是由滤波器34B提供的响应路径S(z)的估计的副本所整形的参考麦克风信号ref，以及另外一个包含误差麦克风信号err的信号。通过使用响应路径S(z)的估计副本－响应SECOPY(z)，转化参考麦克风信号ref，并且最小化合成信号和所述误差麦克风信号err之间的差分，自适应滤波器32调适为期望的P(z)/S(z)响应。下面详述的具有响应Cx(z)的滤波器37A，其处理滤波器34B的输出并且提供第一输出给W系数控制模块。W系数控制模块31的第二输入被另外一个具有的响应Ce(z)的滤波器37B处理。响应Ce(z)具有匹配于滤波器37A的响应Cx(z)的相位响应。滤波器37A和37B都具有高通响应，防止W(z)的系数受DC偏移以及极低频变化的影响。除了误差麦克风信号err以外，被W系数控制模块31与滤波器34B的输出相比的信号，包括已被滤波响应SE(z)处理的下行音频信号ds的反向量，其中响应SECOPY(z)是一个副本。通过输入下行音频信号ds的反向量，防止自适应滤波器32调适为误差麦克风信号err中存在的相对大量的下行音频，并且通过用响应路径S(z)的估计转换下行音频信号ds的反向副本，在比较前被从误差麦克风信号err中消除的下行音频应当匹配下行音频信号ds重现在误差麦克风信号err上的期望版本，因为S(z)的电学和声学路径是从下行音频信号ds开始到达误差麦克风E的路径。滤波器34B本身不是自适应滤波器，但其具有可调节的响应，该响应被调谐到匹配自适应滤波器34A的响应，从而使滤波器34B的响应跟踪自适应滤波器34A的调整。
为了实现上述，自适应滤波器34A具有由SE系数控制模块33控制的系数，其在消除上述被滤波的下行音频信号ds后，比较下行音频信号ds以及误差麦克风信号err，该被滤波的下行音频信号ds已经被自适应滤波器34A滤波以表示预期的被传送到误差麦克风E的下行音频，并且被合成器36A从自适应滤波器34A的输出中消除。SE系数控制模块33将实际下行语音信号ds与存在于误差麦克风信号err内的下行音频信号ds的分量关联。自适应滤波器34A从而调适为从下行音频信号ds成生一个信号，当该信号从误差麦克风信号err扣除时，该信号包含不是由下行音频信号产生的误差麦克风信号err的内容。下行音频检测模块39确定下行音频信号ds中何时包含信息，例如下行音频信号ds的水平大于阈值幅度。如果不存在下行音频信号DS，下行音频检测模块39使控制信号冻结有效，使得SE系数控制模块33和W系数控制模块31停止调适。
现在参照图4，显示了依据本发明的实施例的ANC技术的ANC系统的框图，其能够包含在图3描述的实施例中并且能够实施于图2的编解码器集成电路中。参考麦克风信号ref被Δ-ΣADC41A生成，该Δ-ΣADC41A操作64次过采样并且其输出由抽取器(decimator)42A的2因子抽取以产生32倍过采样信号。Δ-Σ整形器43A用于量化参考麦克风信号ref，其减少了后续处理级的宽度，例如滤波级44A和44B。由于滤波级44A和44B运行在过采样率上，Δ-Σ整形器43A能够将量化的噪声信号整形到量化噪声不产生干扰的频段，例如扬声器SPKR的频率响应波段之外，或者在其中电路系统的其他部分将不会通过量化噪声。滤波级44B具有固定的响应WFIXED(z)，其通常被预先确定以在P(z)/S(z)的估计上提供起始点，用于特定用户的无线电话10的特定设计。P(z)/S(z)的估计响应的自适应部WADAPT(z)被自适应滤波级44A提供，该自适应滤波级44A被泄露(leaky)最小均方算法(LMS)系数控制器54A所控制。该泄露(leaky)最小均方算法(LMS)系数控制器54A是泄露的，由于当没有误差输入被提供以使泄露最小均方算法(LMS)系数控制器54A调适时，响应归一化到平整或者其它预定的响应。提供泄露控制器防止可能出现在一定的环境条件下的长期不稳定，并且通常使系统更能应对ANC响应的特定敏感度。
在图4所描绘的系统中，所述参考麦克风信号被具有响应SECOPY(z)的滤波器51滤波，响应SECOPY(z)是对响应路径S(z)的估计，其输出被抽取器(decimator)52A的32因子抽取以生成基带语音信号，该信号被通过无限脉冲响应(IIR)滤波器53A提供给泄露LMS54A。滤波器51本身不是自适应滤波器，但其具有可调节的响应，该响应被调谐到匹配滤波级55A和55B的合成响应，从而使滤波器51的响应跟踪响应SE(z)的调适。误差麦克风err由Δ-ΣADC41C产生，Δ-ΣADC41C操作于64倍过采样上并且其输出由抽取器42B的2因子抽取以产生32倍过采样信号。如图3的系统中，已被自适应滤波器使用响应SE(z)滤波的许多下行音频ds被合成器46C从误差麦克风信号err中消除，其输出由抽取器(decimator)53C通过32因子抽取以生成基带语音信号，该信号被通过IIR滤波器53B提供到泄露LMS54A。IIR滤波器53A和53B分别包括高通响应，防止DC偏移以及极低频变化影响自适应滤波器44A的系数的调适。
响应SE(z)被另一平行滤波级组55A和55B产生，其中一个滤波级55B具有固定响应SEFIXED(z)，并且另外一个滤波级55A具有由泄露LMS系数控制器54B控制的自适应响应SEADAPT(z)。滤波器级55A和55B的输出由合成器46E合成。类似上述响应滤波器W(z)的实施，响应SEFIXED(z)通常是已知的预定响应以提供在各种工作条件下用于电/声路径S(Z)的适当起点。滤波器51是自适应滤波器55A/55B的副本，但其本身并不是自适应滤波器，即，滤波51不单独调适响应其本身的输出，并且滤波器51可以使用单级或双级实现。在图4的系统中提供了单独的控制值以控制滤波器51的响应，其中作为单级自适应滤波器级显示。然而，滤波器51可选地使用两个平行极实现，并且用于控制自适应滤波级55A的相同控制值也可以用于控制滤波器51方案中的可调滤波部。泄露LMS控制模块54B的输入同样是在基带，通过抽取合成器46H产生的下行语音信号ds和内部语音ia的合成而提供，该抽取由抽取器52B通过32因子抽取，并且另外一个输入由抽取合成器46C的输出提供，该输出已经消除由合成器46E合成的自适应滤波级55A和滤波级55B的输出而产生的信号。合成器46C的输出表示具有由于消除了下行音频信号ds的分量的误差麦克风信号err，其在被抽取器52C抽取后被提供到LMS控制模块54B。LMS控制模块54B的另一个输入是抽取器52B产生的基带信号。抽取器52B的输出上的下行音频信号ds(和内部音频信号ia)的大小被下行音频检测模块39检测，其在检测到下行音频信号ds和内部音频信号ia不存在时，冻结LMS控制模块54A54B的调适。
基带和过采样信号的上述设置，提供了简化控制并且减少自适应控制模块的消耗功率，如泄露LMS控制器54A和54B，同时提供在过采样率上实施自适应滤波器级44A-44B，55A-55B以及过滤器51产生的分接头灵活性。图4的系统的其余部分包括合成器46H，其将下行音频ds与内部音频ia合成，其输出被提供给合成器46D的输入，该合成器46D增加由Σ-ΔADC41B产生并且由侧音衰减器(attenuator)56滤波的近端麦克风信号ns以提供平衡的会话感。46D合成器的输出由Σ-Δ整形器43B整形，该Σ-Δ整形器43B提供输入到滤波级55A和55B，使用与上述Σ-Δ整形器43A同样的方式，使得滤波级55A和55B的宽度通过量化合成器46D的输出而缩小。Σ-Δ整形器43B的量化噪声被抽取器52C的内部低通响应移除。
依据本发明的实施例，合成器46D的输出同样与已被控制链处理过的自适应滤波器级44A-44B的输出合成，该控制链包括用于每个滤波级的相应硬静音模块(hard muteblock)45A、45B，合成硬静音模块45A、45B输出的合成器46A，软静音(soft mute)47以及还有软限制器(soft limiter)48以产生被合成器46B消除的抗噪信号，该合成器46B具有合成器46D的输出源音频。合成器46B的输出由插值器49的2因子插值，并且然后被操作在64倍过采样率的Σ-ΔDAC50重现。DAC50的输出被提供给放大器A1，其产生传送到扬声器SPKR的信号。
现在参看图5，示出根据另一个实施例的ANC技术的ANC系统的框图，可以被包括在本发明的图3所示的实施例中，如可以被实施在图2中编解码器集成电路20。图5中的ANC系统类似于图4，因此在下面将仅描述它们之间的区别。其不是提供高通滤波响应在泄漏LMS54A的输入上，而是通过在参考和误差麦克风信号路径提供各自的高通滤波器60A和60B，将DC分量直接从参考麦克风信号ref以及误差麦克风信号err中移除。然后额外的高通滤波器60C被包含滤波器51后的SE拷贝信号路径。图5中所示的体系结构的优点在于，高通滤波器60A从抗噪信号路径中移除分量和低频分量，否则其将在提供给扬声器SPKR的抗噪信号中通过滤波器级44A，44B，浪费能量，产生热量并且消耗动态范围。然而，由于参考麦克风信号ref需要包含一些能够被ANC系统消除的在低频段，即SPKR扬声器具有显着的响应的频率范围，的低频信息，滤波器60A被设计以通过这样的频率，而当用于泄漏LMS54A的优化调适时，更高的高通截止频率，例如，200赫兹，被使用。过滤器60B和60C的相位响应被匹配以保持用于泄漏LMS54A的稳定操作条件。
图4和图5系统中的每个或者部分单元，以及在图2和图3的示例电路中，可以直接使用逻辑电路，或由处理器例如数字信号处理(DSP)核心执行的程序指令实现，该程序指令执行例如自适应滤波和LMS系数计算的操作。虽然DAC和ADC极通常由专用混合信号电路实现，本发明的ANC系统的体系结构其本身将可以使用混合方式提供，其中逻辑电路可以例如在该设计的高度过采样部分使用，同时程序代码或微码驱动(microcode-driven)的处理单元被选择用于更复杂但较低速率的操作：如计算自适应滤波器的分接头和/或响应检测到的事件，例如本文所述的那些事件。
虽然参考其优选实施例的描述具体示出了本发明，但是应当明白本领域的技术人员在其中可以作出上述的和其它的形式和细节的变化而不脱离本发明的精神和范围。

Claims (6)

1.一种个人音频设备，包括：
个人音频设备壳体；
安装在壳体上的换能器，用于重现音频信号，包括重放给听者的源音频以及用于补偿换能器声输出中的环境音频声音影响的抗噪信号；
安装在壳体上的参考麦克风，用于提供指示环境音频声音的参考麦克风信号；
第一模数转换器，用于将参考麦克风信号以第一采样率转换到第一参考麦克风信号数字表示；
第一Σ-Δ量化器，其以所述第一采样率量化第一数字表示来以所述第一采样率生成降低了分辨率的第二参考麦克风信号数字表示；以及，
实施自适应滤波器的处理电路，该自适应滤波器具有从降低了分辨率的第二参考麦克风信号数字表示生成抗噪信号以减小听者听到的环境音频声音的存在的响应；其中，处理电路实施系数控制模块，其通过调适自适应滤波器的响应，将自适应滤波器的响应整形以一致于参考麦克风信号。
2.权利要求1所述的个人音频设备，其中：所述音频源是数字源音频表示，并且其中所述个人音频设备还包括：
第二Σ-Δ量化器，其量化数字源音频表示以生成降低分辨率的数字源音频表示；以及
安装在所述壳体上靠近所述换能器的位置的误差麦克风，用于提供指示所述换能器的声音输出以及所述换能器上环境音频声音的误差麦克风信号，其中处理电路实现了次级路径自适应滤波器以及合成器，该次级路径自适应滤波器具有将降低分辨率的数字源音频表示滤波的次级路径响应，该合成器从所述误差麦克风信号中消除滤波的所述源音频表示以提供误差信号到系数控制模块，该误差信号表示合成抗噪以及传输到听者的环境音频声音。
3.一种消除个人音频设备换能器附近的环境音频声音的方法，该方法包括：
使用参考麦克风测量环境音频声音的第一测量；
使用模数转换器将所述参考麦克风信号转换来以第一采样率产生第一参考麦克风数字表示；
使用Σ-Δ整形器将所述第一参考麦克风信号数字表示以所述第一采样率量化来以所述第一采样率生成降低分辨率的第二参考麦克风数字表示；以及
通过调适将降低分辨率的所述第二参考麦克风数字表示滤波的自适应滤波器的响应，自适应地从降低分辨率的所述第二参考麦克风信号数字表示生成抗噪信号以对抗在所述换能器的声输出的环境音频声音效应。
4.根据权利要求3所述的方法，还包括：
量化数字源音频表示以生成降低分辨率的数字源音频表示；以及
使用误差麦克风测量指示换能器的声输出以及换能器上环境音频声音的第二测量，其中所述自适应地生成包括：使用次级路径自适应滤波器将降低分辨率的数字源音频表示滤波，该次级路径自适应滤波器具有将所述降低分辨率的数字源音频表示整形的次级路径响应，以及从误差麦克风信号中消除次级路径自适应滤波器的输出结果以提供误差信号，该误差信号表示合成抗噪以及传输到听者的环境音频声音。
5.一种集成电路，用于执行个人音频设备的至少一部分，其包括：
输出，用于提供信号到换能器，包括重放给听者的源音频以及用于对抗换能器声输出中的环境音频声音影响的抗噪信号；
参考麦克风输入，用于接收指示环境音频声音的参考麦克风信号；
第一模数转换器，用于将参考麦克风信号以第一采样率转换到第一参考麦克风的数字表示；
第一Σ-Δ量化器，其以所述第一采样率量化第一数字表示来以所述第一采样率生成降低分辨率的第二参考麦克风信号数字表示；以及，
实现自适应滤波器的处理电路，该自适应滤波器具有从降低分辨率的第二参考麦克风信号数字表示生成抗噪信号以减小听者听到的环境音频声音的存在的响应；其中，所述处理电路实现系数控制模块，其通过调适自适应滤波器的响应，将自适应滤波器的响应整形以一致于参考麦克风信号。
6.权利要求5所述的集成电路，其中：音频源是数字源音频表示，并且其中所述集成电路还包括：
第二Σ-Δ量化器，其量化数字源音频表示以生成降低分辨率的数字源音频表示；以及
误差麦克风输入，用于接收指示所述换能器的声输出以及所述换能器上环境音频声音的误差麦克风信号，其中所述处理电路包括次级路径自适应滤波器以及合成器，该次级路径自适应滤波器具有将降低分辨率的数字源音频表示滤波以产生滤波后的源音频的次级路径响应，该合成器从误差麦克风信号中消除滤波的源音频表示以提供误差信号到系数控制模块，该误差信号表示合成抗噪以及传输到听者的环境音频声音。
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230412727A1 (en) * 2022-06-20 2023-12-21 Motorola Mobility Llc Adjusting Transmit Audio at Near-end Device Based on Background Noise at Far-end Device

Families Citing this family (85)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8634569B2 (en) 2010-01-08 2014-01-21 Conexant Systems, Inc. Systems and methods for echo cancellation and echo suppression
US9142207B2 (en) 2010-12-03 2015-09-22 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)
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
US9076431B2 (en) 2011-06-03 2015-07-07 Cirrus Logic, Inc. Filter architecture for an adaptive noise canceler in a personal audio device
US8958571B2 (en) 2011-06-03 2015-02-17 Cirrus Logic, Inc. MIC covering detection in personal audio devices
US9214150B2 (en) 2011-06-03 2015-12-15 Cirrus Logic, Inc. Continuous adaptation of secondary path adaptive response in 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
US9325821B1 (en) * 2011-09-30 2016-04-26 Cirrus Logic, Inc. Sidetone management in an adaptive noise canceling (ANC) system including secondary path modeling
US9065895B2 (en) * 2012-02-22 2015-06-23 Broadcom Corporation Non-linear echo cancellation
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
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
US9129586B2 (en) * 2012-09-10 2015-09-08 Apple Inc. Prevention of ANC instability in the presence of low frequency noise
US9532139B1 (en) 2012-09-14 2016-12-27 Cirrus Logic, Inc. Dual-microphone frequency amplitude response self-calibration
US10194239B2 (en) * 2012-11-06 2019-01-29 Nokia Technologies Oy Multi-resolution audio signals
US9107010B2 (en) 2013-02-08 2015-08-11 Cirrus Logic, Inc. Ambient noise root mean square (RMS) detector
US9240176B2 (en) * 2013-02-08 2016-01-19 GM Global Technology Operations LLC Active noise control system and method
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
US9324311B1 (en) 2013-03-15 2016-04-26 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
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
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
CN105225661B (zh) * 2014-05-29 2019-06-28 美的集团股份有限公司 语音控制方法和系统
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
EP3186976B1 (en) * 2014-08-29 2020-06-10 Harman International Industries, Incorporated Auto-calibrating noise canceling headphone
US9478212B1 (en) 2014-09-03 2016-10-25 Cirrus Logic, Inc. Systems and methods for use of adaptive secondary path estimate to control equalization in an audio device
EP2996352B1 (en) * 2014-09-15 2019-04-17 Nxp B.V. Audio system and method using a loudspeaker output signal for wind noise reduction
TWI672689B (zh) * 2014-09-30 2019-09-21 美商艾孚諾亞公司 具有低潛時的聲波處理器
US9894438B2 (en) * 2014-09-30 2018-02-13 Avnera Corporation Acoustic processor having low latency
US9552805B2 (en) 2014-12-19 2017-01-24 Cirrus Logic, Inc. Systems and methods for performance and stability control for feedback adaptive noise cancellation
GB2541976A (en) * 2015-07-21 2017-03-08 Cirrus Logic Int Semiconductor Ltd Hybrid finite impulse response filter
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
GB2542648B (en) * 2015-09-22 2019-04-24 Cirrus Logic Int Semiconductor Ltd Systems and methods for distributed adaptive noise cancellation
CN108781318B (zh) * 2015-11-06 2020-07-17 思睿逻辑国际半导体有限公司 自适应噪声消除系统中的反馈啸声管理
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
US10176793B2 (en) * 2017-02-14 2019-01-08 Mediatek Inc. Method, active noise control circuit, and portable electronic device for adaptively performing active noise control operation upon target zone
US10283103B2 (en) 2017-03-09 2019-05-07 Avnera Corporation Real-time acoustic processor
US10096313B1 (en) * 2017-09-20 2018-10-09 Bose Corporation Parallel active noise reduction (ANR) and hear-through signal flow paths in acoustic devices
US10348326B2 (en) * 2017-10-23 2019-07-09 Infineon Technologies Ag Digital silicon microphone with interpolation
CN111566934B (zh) * 2017-10-31 2024-04-09 谷歌有限责任公司 低延迟抽取滤波器和内插器滤波器
GB201804129D0 (en) * 2017-12-15 2018-05-02 Cirrus Logic Int Semiconductor Ltd Proximity sensing
CN112262533B (zh) * 2018-03-29 2022-07-19 瑞士优北罗股份有限公司 主动干扰消除设备、信号隔离控制设备和主动消除干扰的方法
US11264014B1 (en) 2018-09-23 2022-03-01 Plantronics, Inc. Audio device and method of audio processing with improved talker discrimination
US11694708B2 (en) 2018-09-23 2023-07-04 Plantronics, Inc. Audio device and method of audio processing with improved talker discrimination
CN109524021B (zh) * 2018-11-29 2022-01-11 上海交通大学 基于主动攻击信号消除策略的超声波防御方法及系统
CN113196382A (zh) * 2018-12-19 2021-07-30 谷歌有限责任公司 稳健的自适应噪声消除系统和方法
US11019423B2 (en) * 2019-04-12 2021-05-25 Gear Radio Electronics Corp. Active noise cancellation (ANC) headphone and ANC method thereof
US11107453B2 (en) * 2019-05-09 2021-08-31 Dialog Semiconductor B.V. Anti-noise signal generator
KR102202722B1 (ko) * 2019-12-13 2021-01-13 (주)큐델릭스 헤드셋 장치에서 출력 신호를 적응적으로 교정하는 방법 및 헤드셋 장치
US11074903B1 (en) * 2020-03-30 2021-07-27 Amazon Technologies, Inc. Audio device with adaptive equalization
WO2023028018A1 (en) 2021-08-26 2023-03-02 Dolby Laboratories Licensing Corporation Detecting environmental noise in user-generated content
WO2023167511A1 (ko) * 2022-03-02 2023-09-07 삼성전자 주식회사 소리를 출력하기 위한 전자 장치 및 방법
US12057099B1 (en) * 2022-03-15 2024-08-06 Renesas Design Netherlands B.V. Active noise cancellation system
US11948546B2 (en) 2022-07-06 2024-04-02 Cirrus Logic, Inc. Feed-forward adaptive noise-canceling with dynamic filter selection based on classifying acoustic environment
CN116405823B (zh) * 2023-06-01 2023-08-29 深圳市匠心原创科技有限公司 一种骨传导耳机音频智能去噪增强方法
CN117198303B (zh) * 2023-08-28 2024-09-10 瑶芯微电子科技(上海)有限公司 一种音频编解码器及音频编解码系统

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101385387A (zh) * 2006-04-12 2009-03-11 沃福森微电子股份有限公司 用于降低环境噪声的数字电路装置
US20100274564A1 (en) * 2009-04-28 2010-10-28 Pericles Nicholas Bakalos Coordinated anr reference sound compression
US20110007907A1 (en) * 2009-07-10 2011-01-13 Qualcomm Incorporated Systems, methods, apparatus, and computer-readable media for adaptive active noise cancellation
CN102056050A (zh) * 2009-10-28 2011-05-11 飞兆半导体公司 有源噪声消除

Family Cites Families (367)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4020567A (en) 1973-01-11 1977-05-03 Webster Ronald L Method and stuttering therapy apparatus
JPS5952911A (ja) 1982-09-20 1984-03-27 Nec Corp トランスバ−サル・フイルタ
JP2598483B2 (ja) 1988-09-05 1997-04-09 日立プラント建設株式会社 電子消音システム
DE3840433A1 (de) 1988-12-01 1990-06-07 Philips Patentverwaltung Echokompensator
DK45889D0 (da) 1989-02-01 1989-02-01 Medicoteknisk Inst Fremgangsmaade til hoereapparattilpasning
US4926464A (en) 1989-03-03 1990-05-15 Telxon Corporation Telephone communication apparatus and method having automatic selection of receiving mode
US5117461A (en) 1989-08-10 1992-05-26 Mnc, Inc. Electroacoustic device for hearing needs including noise cancellation
JPH10294646A (ja) 1990-02-16 1998-11-04 Sony Corp サンプリングレート変換装置
GB9003938D0 (en) 1990-02-21 1990-04-18 Ross Colin F Noise reducing system
US5021753A (en) 1990-08-03 1991-06-04 Motorola, Inc. Splatter controlled amplifier
US5117401A (en) 1990-08-16 1992-05-26 Hughes Aircraft Company Active adaptive noise canceller without training mode
US5550925A (en) 1991-01-07 1996-08-27 Canon Kabushiki Kaisha Sound processing device
JP3471370B2 (ja) 1991-07-05 2003-12-02 本田技研工業株式会社 能動振動制御装置
US5809152A (en) 1991-07-11 1998-09-15 Hitachi, Ltd. Apparatus for reducing noise in a closed space having divergence detector
SE9102333D0 (sv) 1991-08-12 1991-08-12 Jiri Klokocka Foerfarande och anordning foer digital filtrering
US5548681A (en) 1991-08-13 1996-08-20 Kabushiki Kaisha Toshiba Speech dialogue system for realizing improved communication between user and system
JP2939017B2 (ja) 1991-08-30 1999-08-25 日産自動車株式会社 能動型騒音制御装置
JP2882170B2 (ja) 1992-03-19 1999-04-12 日産自動車株式会社 能動型騒音制御装置
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
JPH066246A (ja) 1992-06-18 1994-01-14 Sony Corp 音声通信端末装置
NO175798C (no) 1992-07-22 1994-12-07 Sinvent As Fremgangsmåte og anordning til aktiv stöydemping i et lokalt område
US5278913A (en) 1992-07-28 1994-01-11 Nelson Industries, Inc. Active acoustic attenuation system with power limiting
CA2145077C (en) 1992-09-21 1998-09-01 Graham P. Eatwell Sampled-data filter with low delay
JP2924496B2 (ja) 1992-09-30 1999-07-26 松下電器産業株式会社 騒音制御装置
KR0130635B1 (ko) 1992-10-14 1998-04-09 모리시타 요이찌 연소 장치의 적응 소음 시스템
GB2271909B (en) 1992-10-21 1996-05-22 Lotus Car Adaptive control system
GB9222103D0 (en) 1992-10-21 1992-12-02 Lotus Car Adaptive control system
JP2929875B2 (ja) 1992-12-21 1999-08-03 日産自動車株式会社 能動型騒音制御装置
JP3272438B2 (ja) * 1993-02-01 2002-04-08 芳男 山崎 信号処理システムおよび処理方法
US5386477A (en) 1993-02-11 1995-01-31 Digisonix, Inc. Active acoustic control system matching model reference
US5465413A (en) 1993-03-05 1995-11-07 Trimble Navigation Limited Adaptive noise cancellation
US5909498A (en) 1993-03-25 1999-06-01 Smith; Jerry R. Transducer device for use with communication apparatus
US5481615A (en) 1993-04-01 1996-01-02 Noise Cancellation Technologies, Inc. Audio reproduction system
US5425105A (en) 1993-04-27 1995-06-13 Hughes Aircraft Company Multiple adaptive filter active noise canceller
JPH0798592A (ja) 1993-06-14 1995-04-11 Mazda Motor Corp 能動的振動制御装置及びその製造方法
DE69424419T2 (de) 1993-06-23 2001-01-04 Noise Cancellation Technologies, Inc. Aktive lärmunterdrückungsanordnung mit variabler verstärkung und verbesserter restlärmmessung
US7103188B1 (en) 1993-06-23 2006-09-05 Owen Jones Variable gain active noise cancelling system with improved residual noise sensing
JPH07104769A (ja) 1993-10-07 1995-04-21 Sharp Corp 能動制御装置
JP3141674B2 (ja) 1994-02-25 2001-03-05 ソニー株式会社 騒音低減ヘッドホン装置
JPH07248778A (ja) 1994-03-09 1995-09-26 Fujitsu Ltd 適応フィルタの係数更新方法
US5563819A (en) 1994-03-31 1996-10-08 Cirrus Logic, Inc. Fast high precision discrete-time analog finite impulse response filter
JPH07325588A (ja) 1994-06-02 1995-12-12 Matsushita Seiko Co Ltd 消音装置
JPH07334169A (ja) 1994-06-07 1995-12-22 Matsushita Electric Ind Co Ltd システム同定装置
JP3385725B2 (ja) 1994-06-21 2003-03-10 ソニー株式会社 映像を伴うオーディオ再生装置
US5586190A (en) 1994-06-23 1996-12-17 Digisonix, Inc. Active adaptive control system with weight update selective leakage
JPH0823373A (ja) 1994-07-08 1996-01-23 Kokusai Electric Co Ltd 通話器回路
US5796849A (en) 1994-11-08 1998-08-18 Bolt, Beranek And Newman Inc. Active noise and vibration control system accounting for time varying plant, using residual signal to create probe signal
US5815582A (en) 1994-12-02 1998-09-29 Noise Cancellation Technologies, Inc. Active plus selective headset
US5633795A (en) 1995-01-06 1997-05-27 Digisonix, Inc. Adaptive tonal control system with constrained output and adaptation
US5852667A (en) 1995-07-03 1998-12-22 Pan; Jianhua Digital feed-forward active noise control system
JP2843278B2 (ja) * 1995-07-24 1999-01-06 松下電器産業株式会社 騒音制御型送受話器
US5699437A (en) 1995-08-29 1997-12-16 United Technologies Corporation Active noise control system using phased-array sensors
US6434246B1 (en) 1995-10-10 2002-08-13 Gn Resound As Apparatus and methods for combining audio compression and feedback cancellation in a hearing aid
GB2307617B (en) 1995-11-24 2000-01-12 Nokia Mobile Phones Ltd Telephones with talker sidetone
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
US5940519A (en) 1996-12-17 1999-08-17 Texas Instruments Incorporated Active noise control system and method for on-line feedback path modeling and on-line secondary path modeling
US6185300B1 (en) 1996-12-31 2001-02-06 Ericsson Inc. Echo canceler for use in communications system
JPH10247088A (ja) 1997-03-06 1998-09-14 Oki Electric Ind Co Ltd 適応型能動騒音制御装置
JP4189042B2 (ja) 1997-03-14 2008-12-03 パナソニック電工株式会社 拡声通話機
US6445799B1 (en) 1997-04-03 2002-09-03 Gn Resound North America Corporation Noise cancellation earpiece
US6181801B1 (en) 1997-04-03 2001-01-30 Resound Corporation Wired open ear canal earpiece
US6078672A (en) 1997-05-06 2000-06-20 Virginia Tech Intellectual Properties, Inc. Adaptive personal active noise system
JP3541339B2 (ja) 1997-06-26 2004-07-07 富士通株式会社 マイクロホンアレイ装置
WO1999005998A1 (en) 1997-07-29 1999-02-11 Telex Communications, Inc. Active noise cancellation aircraft headset system
TW392416B (en) 1997-08-18 2000-06-01 Noise Cancellation Tech Noise cancellation system for active headsets
GB9717816D0 (en) 1997-08-21 1997-10-29 Sec Dep For Transport The Telephone handset noise supression
FI973455A (fi) 1997-08-22 1999-02-23 Nokia Mobile Phones Ltd Menetelmä ja järjestely melun vaimentamiseksi tilassa muodostamalla vastamelua
US6219427B1 (en) 1997-11-18 2001-04-17 Gn Resound As Feedback cancellation improvements
US6282176B1 (en) 1998-03-20 2001-08-28 Cirrus Logic, Inc. Full-duplex speakerphone circuit including a supplementary echo suppressor
WO1999053476A1 (fr) 1998-04-15 1999-10-21 Fujitsu Limited Dispositif antibruit actif
JP2955855B1 (ja) 1998-04-24 1999-10-04 ティーオーエー株式会社 能動型雑音除去装置
EP0973151B8 (en) 1998-07-16 2009-02-25 Panasonic Corporation Noise control system
JP2000089770A (ja) * 1998-07-16 2000-03-31 Matsushita Electric Ind Co Ltd 騒音制御装置
AU6168099A (en) * 1998-09-30 2000-04-17 House Ear Institute Band-limited adaptive feedback canceller for hearing aids
US6304179B1 (en) 1999-02-27 2001-10-16 Congress Financial Corporation Ultrasonic occupant position sensing system
US6434247B1 (en) 1999-07-30 2002-08-13 Gn Resound A/S Feedback cancellation apparatus and methods utilizing adaptive reference filter mechanisms
WO2001019130A2 (en) 1999-09-10 2001-03-15 Starkey Laboratories, Inc. Audio signal processing
US7016504B1 (en) 1999-09-21 2006-03-21 Insonus Medical, Inc. Personal hearing evaluator
GB9922654D0 (en) 1999-09-27 1999-11-24 Jaber Marwan Noise suppression system
US6526139B1 (en) 1999-11-03 2003-02-25 Tellabs Operations, Inc. Consolidated noise injection in a voice processing system
US6650701B1 (en) 2000-01-14 2003-11-18 Vtel Corporation Apparatus and method for controlling an acoustic echo canceler
US6606382B2 (en) 2000-01-27 2003-08-12 Qualcomm Incorporated System and method for implementation of an echo canceller
GB2360165A (en) 2000-03-07 2001-09-12 Central Research Lab Ltd A method of improving the audibility of sound from a loudspeaker located close to an ear
US6766292B1 (en) 2000-03-28 2004-07-20 Tellabs Operations, Inc. Relative noise ratio weighting techniques for adaptive noise cancellation
JP2002010355A (ja) 2000-06-26 2002-01-11 Casio Comput Co Ltd 通信装置、及び携帯電話機
US6542436B1 (en) 2000-06-30 2003-04-01 Nokia Corporation Acoustical proximity detection for mobile terminals and other devices
SG106582A1 (en) 2000-07-05 2004-10-29 Univ Nanyang Active noise control system with on-line secondary path modeling
US7058463B1 (en) * 2000-12-29 2006-06-06 Nokia Corporation Method and apparatus for implementing a class D driver and speaker system
US6768795B2 (en) 2001-01-11 2004-07-27 Telefonaktiebolaget Lm Ericsson (Publ) Side-tone control within a telecommunication instrument
US6792107B2 (en) 2001-01-26 2004-09-14 Lucent Technologies Inc. Double-talk detector suitable for a telephone-enabled PC
US6940982B1 (en) 2001-03-28 2005-09-06 Lsi Logic Corporation Adaptive noise cancellation (ANC) for DVD systems
US6996241B2 (en) 2001-06-22 2006-02-07 Trustees Of Dartmouth College Tuned feedforward LMS filter with feedback control
AUPR604201A0 (en) 2001-06-29 2001-07-26 Hearworks Pty Ltd Telephony interface apparatus
CA2354808A1 (en) 2001-08-07 2003-02-07 King Tam Sub-band adaptive signal processing in an oversampled filterbank
CA2354858A1 (en) 2001-08-08 2003-02-08 Dspfactory Ltd. Subband directional audio signal processing using an oversampled filterbank
WO2003015074A1 (en) 2001-08-08 2003-02-20 Nanyang Technological University,Centre For Signal Processing. Active noise control system with on-line secondary path modeling
GB0129217D0 (en) 2001-12-06 2002-01-23 Tecteon Plc Narrowband detector
ATE507685T1 (de) 2002-01-12 2011-05-15 Oticon As Gegenüber windgeräuschen unempfindliches hörgerät
US20100284546A1 (en) 2005-08-18 2010-11-11 Debrunner Victor Active noise control algorithm that requires no secondary path identification based on the SPR property
JP3898983B2 (ja) 2002-05-31 2007-03-28 株式会社ケンウッド 音響装置
WO2004009007A1 (en) 2002-07-19 2004-01-29 The Penn State Research Foundation A linear independent method for noninvasive online secondary path modeling
US20040017921A1 (en) 2002-07-26 2004-01-29 Mantovani Jose Ricardo Baddini Electrical impedance based audio compensation in audio devices and methods therefor
CA2399159A1 (en) 2002-08-16 2004-02-16 Dspfactory Ltd. Convergence improvement for oversampled subband adaptive filters
US6917688B2 (en) 2002-09-11 2005-07-12 Nanyang Technological University Adaptive noise cancelling microphone system
AU2002953284A0 (en) 2002-12-12 2003-01-02 Lake Technology Limited Digital multirate filtering
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
DE602004025089D1 (de) 2003-02-27 2010-03-04 Ericsson Telefon Ab L M Hörbarkeitsverbesserung
US7406179B2 (en) 2003-04-01 2008-07-29 Sound Design Technologies, Ltd. System and method for detecting the insertion or removal of a hearing instrument from the ear canal
US7242778B2 (en) 2003-04-08 2007-07-10 Gennum Corporation Hearing instrument with self-diagnostics
US7643641B2 (en) 2003-05-09 2010-01-05 Nuance Communications, Inc. System for communication enhancement in a noisy environment
GB2401744B (en) 2003-05-14 2006-02-15 Ultra Electronics Ltd An adaptive control unit with feedback compensation
JP3946667B2 (ja) 2003-05-29 2007-07-18 松下電器産業株式会社 能動型騒音低減装置
US7142894B2 (en) 2003-05-30 2006-11-28 Nokia Corporation Mobile phone for voice adaptation in socially sensitive environment
US7034614B2 (en) 2003-11-21 2006-04-25 Northrop Grumman Corporation Modified polar amplifier architecture
US20050117754A1 (en) 2003-12-02 2005-06-02 Atsushi Sakawaki Active noise cancellation helmet, motor vehicle system including the active noise cancellation helmet, and method of canceling noise in helmet
US7466838B1 (en) 2003-12-10 2008-12-16 William T. Moseley Electroacoustic devices with noise-reducing capability
US7110864B2 (en) 2004-03-08 2006-09-19 Siemens Energy & Automation, Inc. Systems, devices, and methods for detecting arcs
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
US20060018460A1 (en) 2004-06-25 2006-01-26 Mccree Alan V Acoustic echo devices and methods
TWI279775B (en) 2004-07-14 2007-04-21 Fortemedia Inc Audio apparatus with active noise cancellation
US20060035593A1 (en) 2004-08-12 2006-02-16 Motorola, Inc. Noise and interference reduction in digitized signals
DK200401280A (da) 2004-08-24 2006-02-25 Oticon As Lavfrekvens fase matchning til mikrofoner
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
US7555081B2 (en) 2004-10-29 2009-06-30 Harman International Industries, Incorporated Log-sampled filter system
JP2006197075A (ja) 2005-01-12 2006-07-27 Yamaha Corp マイクロフォンおよび拡声装置
EP1684543A1 (de) 2005-01-19 2006-07-26 Success Chip Ltd. Verfahren zum Unterdrücken von elektroakustischer Rückkopplung
JP4186932B2 (ja) 2005-02-07 2008-11-26 ヤマハ株式会社 ハウリング抑制装置および拡声装置
KR100677433B1 (ko) 2005-02-11 2007-02-02 엘지전자 주식회사 이동 통신 단말기의 모노 및 스테레오 음원 출력 장치
US7680456B2 (en) 2005-02-16 2010-03-16 Texas Instruments Incorporated Methods and apparatus to perform signal removal in a low intermediate frequency receiver
US7330739B2 (en) 2005-03-31 2008-02-12 Nxp B.V. Method and apparatus for providing a sidetone in a wireless communication device
JP4664116B2 (ja) 2005-04-27 2011-04-06 アサヒビール株式会社 能動騒音抑制装置
EP1732352B1 (en) 2005-04-29 2015-10-21 Nuance Communications, Inc. Detection and suppression of wind noise in microphone signals
US20060262938A1 (en) 2005-05-18 2006-11-23 Gauger Daniel M Jr Adapted audio response
EP1727131A2 (en) 2005-05-26 2006-11-29 Yamaha Hatsudoki Kabushiki Kaisha Noise cancellation helmet, motor vehicle system including the noise cancellation helmet and method of canceling noise in helmet
WO2006128768A1 (en) 2005-06-03 2006-12-07 Thomson Licensing Loudspeaker driver with integrated microphone
CN101198533B (zh) 2005-06-14 2010-08-25 光荣株式会社 纸张类输送装置
WO2007011337A1 (en) 2005-07-14 2007-01-25 Thomson Licensing Headphones with user-selectable filter for active noise cancellation
CN1897054A (zh) 2005-07-14 2007-01-17 松下电器产业株式会社 可根据声音种类发出警报的传输装置及方法
JP4818014B2 (ja) * 2005-07-28 2011-11-16 株式会社東芝 信号処理装置
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
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
WO2007046435A1 (ja) 2005-10-21 2007-04-26 Matsushita Electric Industrial Co., Ltd. 騒音制御装置
EP1793374A1 (en) 2005-12-02 2007-06-06 Nederlandse Organisatie voor Toegepast-Natuuurwetenschappelijk Onderzoek TNO A filter apparatus for actively reducing noise
US20100226210A1 (en) 2005-12-13 2010-09-09 Kordis Thomas F Vigilante acoustic detection, location and response system
US8345890B2 (en) 2006-01-05 2013-01-01 Audience, Inc. System and method for utilizing inter-microphone level differences for speech enhancement
US8744844B2 (en) 2007-07-06 2014-06-03 Audience, Inc. System and method for adaptive intelligent noise suppression
US8194880B2 (en) 2006-01-30 2012-06-05 Audience, Inc. System and method for utilizing omni-directional microphones for speech enhancement
US7441173B2 (en) 2006-02-16 2008-10-21 Siemens Energy & Automation, Inc. Systems, devices, and methods for arc fault detection
US20070208520A1 (en) 2006-03-01 2007-09-06 Siemens Energy & Automation, Inc. Systems, devices, and methods for arc fault management
US7903825B1 (en) 2006-03-03 2011-03-08 Cirrus Logic, Inc. Personal audio playback device having gain control responsive to environmental sounds
EP1994788B1 (en) 2006-03-10 2014-05-07 MH Acoustics, LLC Noise-reducing directional microphone array
CN101410900A (zh) 2006-03-24 2009-04-15 皇家飞利浦电子股份有限公司 用于可佩戴装置的数据处理
GB2436657B (en) 2006-04-01 2011-10-26 Sonaptic Ltd Ambient noise-reduction control system
US8706482B2 (en) 2006-05-11 2014-04-22 Nth Data Processing L.L.C. Voice coder with multiple-microphone system and strategic microphone placement to deter obstruction for a digital communication device
US7742790B2 (en) 2006-05-23 2010-06-22 Alon Konchitsky Environmental noise reduction and cancellation for a communication device including for a wireless and cellular telephone
JP2007328219A (ja) 2006-06-09 2007-12-20 Matsushita Electric Ind Co Ltd 能動型騒音制御装置
US20070297620A1 (en) 2006-06-27 2007-12-27 Choy Daniel S J Methods and Systems for Producing a Zone of Reduced Background Noise
JP4252074B2 (ja) 2006-07-03 2009-04-08 政明 大熊 アクティブ消音装置におけるオンライン同定時の信号処理方法
US7368918B2 (en) 2006-07-27 2008-05-06 Siemens Energy & Automation Devices, systems, and methods for adaptive RF sensing in arc fault detection
US8311243B2 (en) 2006-08-21 2012-11-13 Cirrus Logic, Inc. Energy-efficient consumer device audio power output stage
US7925307B2 (en) 2006-10-31 2011-04-12 Palm, Inc. Audio output using multiple speakers
US8126161B2 (en) 2006-11-02 2012-02-28 Hitachi, Ltd. Acoustic echo canceller system
JP5564743B2 (ja) 2006-11-13 2014-08-06 ソニー株式会社 ノイズキャンセル用のフィルタ回路、ノイズ低減信号生成方法、およびノイズキャンセリングシステム
US8270625B2 (en) 2006-12-06 2012-09-18 Brigham Young University Secondary path modeling for active noise control
US8019050B2 (en) 2007-01-03 2011-09-13 Motorola Solutions, Inc. Method and apparatus for providing feedback of vocal quality to a user
US8085966B2 (en) 2007-01-10 2011-12-27 Allan Amsel Combined headphone set and portable speaker assembly
EP1947642B1 (en) 2007-01-16 2018-06-13 Apple Inc. Active noise control system
US8229106B2 (en) 2007-01-22 2012-07-24 D.S.P. Group, Ltd. Apparatus and methods for enhancement of speech
GB2441835B (en) 2007-02-07 2008-08-20 Sonaptic Ltd Ambient noise reduction system
FR2913521B1 (fr) 2007-03-09 2009-06-12 Sas Rns Engineering Procede de reduction active d'une nuisance sonore.
DE102007013719B4 (de) 2007-03-19 2015-10-29 Sennheiser Electronic Gmbh & Co. Kg Hörer
US7365669B1 (en) * 2007-03-28 2008-04-29 Cirrus Logic, Inc. Low-delay signal processing based on highly oversampled digital processing
JP5002302B2 (ja) 2007-03-30 2012-08-15 本田技研工業株式会社 能動型騒音制御装置
JP5189307B2 (ja) 2007-03-30 2013-04-24 本田技研工業株式会社 能動型騒音制御装置
US8014519B2 (en) 2007-04-02 2011-09-06 Microsoft Corporation Cross-correlation based echo canceller controllers
JP4722878B2 (ja) 2007-04-19 2011-07-13 ソニー株式会社 ノイズ低減装置および音響再生装置
US7742746B2 (en) 2007-04-30 2010-06-22 Qualcomm Incorporated Automatic volume and dynamic range adjustment for mobile audio devices
US7817808B2 (en) 2007-07-19 2010-10-19 Alon Konchitsky Dual adaptive structure for speech enhancement
DK2023664T3 (da) 2007-08-10 2013-06-03 Oticon As Aktiv støjudligning i høreapparater
US8855330B2 (en) 2007-08-22 2014-10-07 Dolby Laboratories Licensing Corporation Automated sensor signal matching
KR101409169B1 (ko) 2007-09-05 2014-06-19 삼성전자주식회사 억제 폭 조절을 통한 사운드 줌 방법 및 장치
US8385560B2 (en) 2007-09-24 2013-02-26 Jason Solbeck In-ear digital electronic noise cancelling and communication device
ATE518381T1 (de) 2007-09-27 2011-08-15 Harman Becker Automotive Sys Automatische bassregelung
WO2009041012A1 (ja) 2007-09-28 2009-04-02 Dimagic Co., Ltd. ノイズ制御システム
US8251903B2 (en) 2007-10-25 2012-08-28 Valencell, Inc. Noninvasive physiological analysis using excitation-sensor modules and related devices and methods
US8325934B2 (en) 2007-12-07 2012-12-04 Board Of Trustees Of Northern Illinois University Electronic pillow for abating snoring/environmental noises, hands-free communications, and non-invasive monitoring and recording
GB0725111D0 (en) 2007-12-21 2008-01-30 Wolfson Microelectronics Plc Lower rate emulation
GB0725115D0 (en) 2007-12-21 2008-01-30 Wolfson Microelectronics Plc Split filter
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
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
WO2009110087A1 (ja) 2008-03-07 2009-09-11 ティーオーエー株式会社 信号処理装置
GB2458631B (en) 2008-03-11 2013-03-20 Oxford Digital Ltd Audio processing
JP5357193B2 (ja) 2008-03-14 2013-12-04 コーニンクレッカ フィリップス エヌ ヴェ サウンドシステム及びその動作方法
US8184816B2 (en) 2008-03-18 2012-05-22 Qualcomm Incorporated Systems and methods for detecting wind noise using multiple audio sources
JP4572945B2 (ja) 2008-03-28 2010-11-04 ソニー株式会社 ヘッドフォン装置、信号処理装置、信号処理方法
US9142221B2 (en) 2008-04-07 2015-09-22 Cambridge Silicon Radio Limited Noise reduction
JP4506873B2 (ja) 2008-05-08 2010-07-21 ソニー株式会社 信号処理装置、信号処理方法
US8285344B2 (en) 2008-05-21 2012-10-09 DP Technlogies, Inc. Method and apparatus for adjusting audio for a user environment
JP5256119B2 (ja) 2008-05-27 2013-08-07 パナソニック株式会社 補聴器並びに補聴器に用いられる補聴処理方法及び集積回路
KR101470528B1 (ko) 2008-06-09 2014-12-15 삼성전자주식회사 적응 빔포밍을 위한 사용자 방향의 소리 검출 기반의 적응모드 제어 장치 및 방법
US8498589B2 (en) 2008-06-12 2013-07-30 Qualcomm Incorporated Polar modulator with path delay compensation
EP2133866B1 (en) 2008-06-13 2016-02-17 Harman Becker Automotive Systems GmbH Adaptive noise control system
WO2009155696A1 (en) 2008-06-23 2009-12-30 Kapik Inc. System and method for processing a signal with a filter employing fir and iir elements
GB2461315B (en) 2008-06-27 2011-09-14 Wolfson Microelectronics Plc Noise cancellation system
CN103137139B (zh) 2008-06-30 2014-12-10 杜比实验室特许公司 多麦克风语音活动检测器
JP4697267B2 (ja) 2008-07-01 2011-06-08 ソニー株式会社 ハウリング検出装置およびハウリング検出方法
JP2010023534A (ja) * 2008-07-15 2010-02-04 Panasonic Corp 騒音低減装置
US8693699B2 (en) 2008-07-29 2014-04-08 Dolby Laboratories Licensing Corporation Method for adaptive control and equalization of electroacoustic channels
US8290537B2 (en) 2008-09-15 2012-10-16 Apple Inc. Sidetone adjustment based on headset or earphone type
US9253560B2 (en) 2008-09-16 2016-02-02 Personics Holdings, Llc Sound library and method
US20100082339A1 (en) 2008-09-30 2010-04-01 Alon Konchitsky Wind Noise Reduction
US8355512B2 (en) 2008-10-20 2013-01-15 Bose Corporation Active noise reduction adaptive filter leakage adjusting
US8306240B2 (en) 2008-10-20 2012-11-06 Bose Corporation Active noise reduction adaptive filter adaptation rate adjusting
US20100124335A1 (en) 2008-11-19 2010-05-20 All Media Guide, Llc Scoring a match of two audio tracks sets using track time probability distribution
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
US8948410B2 (en) 2008-12-18 2015-02-03 Koninklijke Philips N.V. Active audio noise cancelling
EP2202998B1 (en) 2008-12-29 2014-02-26 Nxp B.V. A device for and a method of processing audio data
US8600085B2 (en) 2009-01-20 2013-12-03 Apple Inc. Audio player with monophonic mode control
EP2216774B1 (en) 2009-01-30 2015-09-16 Harman Becker Automotive Systems GmbH Adaptive noise control system and method
US8548176B2 (en) 2009-02-03 2013-10-01 Nokia Corporation Apparatus including microphone arrangements
DE102009014463A1 (de) 2009-03-23 2010-09-30 Siemens Medical Instruments Pte. Ltd. Vorrichtung und Verfahren zum Messen der Distanz zum Trommelfell
EP2237270B1 (en) 2009-03-30 2012-07-04 Nuance Communications, Inc. A method for determining a noise reference signal for noise compensation and/or noise reduction
EP2415276B1 (en) 2009-03-30 2015-08-12 Bose Corporation Personal acoustic device position determination
US8155330B2 (en) 2009-03-31 2012-04-10 Apple Inc. Dynamic audio parameter adjustment using touch sensing
WO2010112073A1 (en) 2009-04-02 2010-10-07 Oticon A/S Adaptive feedback cancellation based on inserted and/or intrinsic characteristics and matched retrieval
EP2621198A3 (en) 2009-04-02 2015-03-25 Oticon A/s Adaptive feedback cancellation based on inserted and/or intrinsic signal characteristics and matched retrieval
US8189799B2 (en) 2009-04-09 2012-05-29 Harman International Industries, Incorporated System for active noise control based on audio system output
US9202456B2 (en) 2009-04-23 2015-12-01 Qualcomm Incorporated Systems, methods, apparatus, and computer-readable media for automatic control of active noise cancellation
EP2247119A1 (de) 2009-04-27 2010-11-03 Siemens Medical Instruments Pte. Ltd. Vorrichtung zum akustischen Analysieren einer Hörvorrichtung und Analyseverfahren
US8184822B2 (en) 2009-04-28 2012-05-22 Bose Corporation ANR signal processing topology
US8165313B2 (en) 2009-04-28 2012-04-24 Bose Corporation ANR settings triple-buffering
US8345888B2 (en) 2009-04-28 2013-01-01 Bose Corporation Digital high frequency phase compensation
US8155334B2 (en) 2009-04-28 2012-04-10 Bose Corporation Feedforward-based ANR talk-through
US8532310B2 (en) 2010-03-30 2013-09-10 Bose Corporation Frequency-dependent ANR reference sound compression
WO2010131154A1 (en) 2009-05-11 2010-11-18 Koninklijke Philips Electronics N.V. Audio noise cancelling
CN101552939B (zh) 2009-05-13 2012-09-05 吉林大学 车内声品质自适应主动控制系统和方法
US20100296666A1 (en) 2009-05-25 2010-11-25 National Chin-Yi University Of Technology Apparatus and method for noise cancellation in voice communication
JP5546795B2 (ja) * 2009-05-27 2014-07-09 日本車輌製造株式会社 対象波低減装置
JP5389530B2 (ja) * 2009-06-01 2014-01-15 日本車輌製造株式会社 対象波低減装置
EP2259250A1 (en) 2009-06-03 2010-12-08 Nxp B.V. Hybrid active noise reduction device for reducing environmental noise, method for determining an operational parameter of a hybrid active noise reduction device, and program element
JP4612728B2 (ja) 2009-06-09 2011-01-12 株式会社東芝 音声出力装置、及び音声処理システム
JP4734441B2 (ja) 2009-06-12 2011-07-27 株式会社東芝 電気音響変換装置
US8218779B2 (en) 2009-06-17 2012-07-10 Sony Ericsson Mobile Communications Ab Portable communication device and a method of processing signals therein
ATE550754T1 (de) 2009-07-30 2012-04-15 Nxp Bv Verfahren und vorrichtung zur aktiven geräuschsminderung unter anwendung von wahrnehmungsmaskierung
JP5321372B2 (ja) * 2009-09-09 2013-10-23 沖電気工業株式会社 エコーキャンセラ
US8842848B2 (en) 2009-09-18 2014-09-23 Aliphcom Multi-modal audio system with automatic usage mode detection and configuration capability
US20110091047A1 (en) 2009-10-20 2011-04-21 Alon Konchitsky Active Noise Control in Mobile Devices
US20110099010A1 (en) 2009-10-22 2011-04-28 Broadcom Corporation Multi-channel noise suppression system
US10115386B2 (en) 2009-11-18 2018-10-30 Qualcomm Incorporated Delay techniques in active noise cancellation circuits or other circuits that perform filtering of decimated coefficients
US8401200B2 (en) 2009-11-19 2013-03-19 Apple Inc. Electronic device and headset with speaker seal evaluation capabilities
US8526628B1 (en) 2009-12-14 2013-09-03 Audience, Inc. Low latency active noise cancellation system
CN102111697B (zh) 2009-12-28 2015-03-25 歌尔声学股份有限公司 一种麦克风阵列降噪控制方法及装置
US8385559B2 (en) 2009-12-30 2013-02-26 Robert Bosch Gmbh Adaptive digital noise canceller
US9123325B2 (en) 2010-02-15 2015-09-01 Pioneer Corporation Active vibration noise control device
EP2362381B1 (en) 2010-02-25 2019-12-18 Harman Becker Automotive Systems GmbH Active noise reduction system
JP2011191383A (ja) 2010-03-12 2011-09-29 Panasonic Corp 騒音低減装置
WO2011125216A1 (ja) 2010-04-09 2011-10-13 パイオニア株式会社 能動型振動騒音制御装置
CN102859591B (zh) 2010-04-12 2015-02-18 瑞典爱立信有限公司 用于语音编码器中的噪声消除的方法和装置
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
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
US9135907B2 (en) 2010-06-17 2015-09-15 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
JP2011055494A (ja) 2010-08-30 2011-03-17 Oki Electric Industry Co Ltd エコーキャンセラ
US8775172B2 (en) 2010-10-02 2014-07-08 Noise Free Wireless, Inc. Machine for enabling and disabling noise reduction (MEDNR) based on a threshold
GB2484722B (en) 2010-10-21 2014-11-12 Wolfson Microelectronics Plc Noise cancellation system
EP2636153A1 (en) 2010-11-05 2013-09-11 Semiconductor Ideas To The Market (ITOM) Method for reducing noise included in a stereo signal, stereo signal processing device and fm receiver using the method
US8924204B2 (en) 2010-11-12 2014-12-30 Broadcom Corporation Method and apparatus for wind noise detection and suppression using multiple microphones
JP2012114683A (ja) 2010-11-25 2012-06-14 Kyocera Corp 携帯電話機および携帯電話機におけるエコー低減方法
EP2461323A1 (en) 2010-12-01 2012-06-06 Dialog Semiconductor GmbH Reduced delay digital active noise cancellation
US9142207B2 (en) 2010-12-03 2015-09-22 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
US20120155666A1 (en) 2010-12-16 2012-06-21 Nair Vijayakumaran V Adaptive noise cancellation
US8718291B2 (en) * 2011-01-05 2014-05-06 Cambridge Silicon Radio Limited ANC for BT headphones
KR20120080409A (ko) 2011-01-07 2012-07-17 삼성전자주식회사 잡음 구간 판별에 의한 잡음 추정 장치 및 방법
US8539012B2 (en) 2011-01-13 2013-09-17 Audyssey Laboratories Multi-rate implementation without high-pass filter
WO2012107561A1 (en) 2011-02-10 2012-08-16 Dolby International Ab Spatial adaptation in multi-microphone sound capture
US9037458B2 (en) 2011-02-23 2015-05-19 Qualcomm Incorporated Systems, methods, apparatus, and computer-readable media for spatially selective audio augmentation
DE102011013343B4 (de) 2011-03-08 2012-12-13 Austriamicrosystems Ag Regelsystem für aktive Rauschunterdrückung sowie Verfahren zur aktiven Rauschunterdrückung
US8693700B2 (en) 2011-03-31 2014-04-08 Bose Corporation Adaptive feed-forward noise reduction
US9055367B2 (en) 2011-04-08 2015-06-09 Qualcomm Incorporated Integrated psychoacoustic bass enhancement (PBE) for improved audio
US20120263317A1 (en) 2011-04-13 2012-10-18 Qualcomm Incorporated Systems, methods, apparatus, and computer readable media for equalization
US9565490B2 (en) 2011-05-02 2017-02-07 Apple Inc. Dual mode headphones and methods for constructing the same
EP2528358A1 (en) 2011-05-23 2012-11-28 Oticon A/S A method of identifying a wireless communication channel in a sound system
US20120300960A1 (en) 2011-05-27 2012-11-29 Graeme Gordon Mackay Digital signal routing circuit
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
US9214150B2 (en) 2011-06-03 2015-12-15 Cirrus Logic, Inc. Continuous adaptation of secondary path adaptive response in noise-canceling personal audio devices
US8958571B2 (en) 2011-06-03 2015-02-17 Cirrus Logic, Inc. MIC covering detection 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
US9318094B2 (en) 2011-06-03 2016-04-19 Cirrus Logic, Inc. Adaptive noise canceling architecture for a personal audio device
US8909524B2 (en) 2011-06-07 2014-12-09 Analog Devices, Inc. Adaptive active noise canceling for handset
GB2492983B (en) 2011-07-18 2013-09-18 Incus Lab Ltd Digital noise-cancellation
EP2551845B1 (en) 2011-07-26 2020-04-01 Harman Becker Automotive Systems GmbH Noise reducing sound reproduction
USD666169S1 (en) 2011-10-11 2012-08-28 Valencell, Inc. Monitoring earbud
US20130156238A1 (en) 2011-11-28 2013-06-20 Sony Mobile Communications Ab Adaptive crosstalk rejection
EP2803137B1 (en) 2012-01-10 2016-11-23 Cirrus Logic International Semiconductor Limited Multi-rate filter system
US9020065B2 (en) 2012-01-16 2015-04-28 Telefonaktiebolaget L M Ericsson (Publ) Radio frequency digital filter group delay mismatch reduction
KR101844076B1 (ko) 2012-02-24 2018-03-30 삼성전자주식회사 영상 통화 서비스 제공 방법 및 장치
US8831239B2 (en) 2012-04-02 2014-09-09 Bose Corporation Instability detection and avoidance in a feedback system
US9857451B2 (en) 2012-04-13 2018-01-02 Qualcomm Incorporated Systems and methods for mapping a source location
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
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)
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
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
US9648409B2 (en) 2012-07-12 2017-05-09 Apple Inc. Earphones with ear presence sensors
US9445172B2 (en) 2012-08-02 2016-09-13 Ronald Pong Headphones with interactive display
US9516407B2 (en) 2012-08-13 2016-12-06 Apple Inc. Active noise control with compensation for error sensing at the eardrum
US9113243B2 (en) 2012-08-16 2015-08-18 Cisco Technology, Inc. Method and system for obtaining an audio signal
US9058801B2 (en) 2012-09-09 2015-06-16 Apple Inc. Robust process for managing filter coefficients in adaptive noise canceling systems
US9129586B2 (en) 2012-09-10 2015-09-08 Apple Inc. Prevention of ANC instability in the presence of low frequency noise
US9330652B2 (en) 2012-09-24 2016-05-03 Apple Inc. Active noise cancellation using multiple reference microphone signals
US9020160B2 (en) 2012-11-02 2015-04-28 Bose Corporation Reducing occlusion effect in ANR headphones
US9344792B2 (en) 2012-11-29 2016-05-17 Apple Inc. Ear presence detection in noise cancelling earphones
US9208769B2 (en) 2012-12-18 2015-12-08 Apple Inc. Hybrid adaptive headphone
US9351085B2 (en) 2012-12-20 2016-05-24 Cochlear Limited Frequency based feedback control
US9106989B2 (en) 2013-03-13 2015-08-11 Cirrus Logic, Inc. Adaptive-noise canceling (ANC) effectiveness estimation and correction in a personal audio device
US9414150B2 (en) 2013-03-14 2016-08-09 Cirrus Logic, Inc. Low-latency multi-driver adaptive noise canceling (ANC) system for a personal audio device
US9208771B2 (en) 2013-03-15 2015-12-08 Cirrus Logic, Inc. Ambient noise-based adaptation of secondary path adaptive response in noise-canceling personal audio devices
US20140294182A1 (en) 2013-03-28 2014-10-02 Cirrus Logic, Inc. Systems and methods for locating an error microphone to minimize or reduce obstruction of an acoustic transducer wave path
US10206032B2 (en) 2013-04-10 2019-02-12 Cirrus Logic, Inc. Systems and methods for multi-mode adaptive noise cancellation for audio headsets
US9066176B2 (en) 2013-04-15 2015-06-23 Cirrus Logic, Inc. Systems and methods for adaptive noise cancellation including dynamic bias of coefficients of an adaptive noise cancellation system
US9462376B2 (en) 2013-04-16 2016-10-04 Cirrus Logic, Inc. Systems and methods for hybrid adaptive noise cancellation
US9460701B2 (en) 2013-04-17 2016-10-04 Cirrus Logic, Inc. Systems and methods for adaptive noise cancellation by biasing anti-noise level
US9402124B2 (en) 2013-04-18 2016-07-26 Xiaomi Inc. Method for controlling terminal device and the smart terminal device thereof
US9515629B2 (en) 2013-05-16 2016-12-06 Apple Inc. Adaptive audio equalization for personal listening devices
US8907829B1 (en) 2013-05-17 2014-12-09 Cirrus Logic, Inc. Systems and methods for sampling in an input network of a delta-sigma modulator
US9264808B2 (en) 2013-06-14 2016-02-16 Cirrus Logic, Inc. Systems and methods for detection and cancellation of narrow-band noise
US9666176B2 (en) 2013-09-13 2017-05-30 Cirrus Logic, Inc. Systems and methods for adaptive noise cancellation by adaptively shaping internal white noise to train a secondary path
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
US9741333B2 (en) 2014-01-06 2017-08-22 Avnera Corporation Noise cancellation system
US9479860B2 (en) 2014-03-07 2016-10-25 Cirrus Logic, Inc. Systems and methods for enhancing performance of audio transducer based on detection of transducer status
US10181315B2 (en) 2014-06-13 2019-01-15 Cirrus Logic, Inc. Systems and methods for selectively enabling and disabling adaptation of an adaptive noise cancellation system
US9478212B1 (en) 2014-09-03 2016-10-25 Cirrus Logic, Inc. Systems and methods for use of adaptive secondary path estimate to control equalization in an audio device
TWI672689B (zh) 2014-09-30 2019-09-21 美商艾孚諾亞公司 具有低潛時的聲波處理器
US9552805B2 (en) 2014-12-19 2017-01-24 Cirrus Logic, Inc. Systems and methods for performance and stability control for feedback adaptive noise cancellation
US20160365084A1 (en) 2015-06-09 2016-12-15 Cirrus Logic International Semiconductor Ltd. Hybrid finite impulse response filter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101385387A (zh) * 2006-04-12 2009-03-11 沃福森微电子股份有限公司 用于降低环境噪声的数字电路装置
US20100274564A1 (en) * 2009-04-28 2010-10-28 Pericles Nicholas Bakalos Coordinated anr reference sound compression
US20110007907A1 (en) * 2009-07-10 2011-01-13 Qualcomm Incorporated Systems, methods, apparatus, and computer-readable media for adaptive active noise cancellation
CN102056050A (zh) * 2009-10-28 2011-05-11 飞兆半导体公司 有源噪声消除

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230412727A1 (en) * 2022-06-20 2023-12-21 Motorola Mobility Llc Adjusting Transmit Audio at Near-end Device Based on Background Noise at Far-end Device

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