CN108432264A - 基于密封质量的阻塞减少和主动降噪 - Google Patents

基于密封质量的阻塞减少和主动降噪 Download PDF

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CN108432264A
CN108432264A CN201680076099.0A CN201680076099A CN108432264A CN 108432264 A CN108432264 A CN 108432264A CN 201680076099 A CN201680076099 A CN 201680076099A CN 108432264 A CN108432264 A CN 108432264A
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acoustic signal
airtight quality
predetermined threshold
user
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S·加多尼克斯
J·伍德拉夫
T·韦尔马
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Knowles Electronics LLC
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Abstract

提供了用于基于插入用户耳道中的耳内(ITE)模块的密封质量来进行主动降噪和阻塞减少的系统和方法。示例方法包括：接收一个或更多个声学信号。声学信号中的每一个表示具有语音分量和不想要的噪声中的至少一个的至少一个捕获的声音。语音分量可以包括用户自己的语音。至少部分地基于声学信号来确定耳道的密封质量。如果密封质量超过预定阈值，则对声学信号执行阻塞减少，以改善语音分量。如果密封质量低于预定阈值，则对声学信号执行主动降噪，以减少不想要的噪声。

Description

基于密封质量的阻塞减少和主动降噪
相关申请的交叉引用
本申请要求保护2015年12月30日提交的美国专利申请No.14/985057的权益和优先权，其全部内容通过引用并入于此。
技术领域
本申请总体上涉及音频处理，并且更具体地说，涉及用于基于密封质量来进行阻塞减少和主动降噪的系统和方法。
背景技术
基于耳塞的音频装置的主动降噪(ANR)系统可以被用于降低背景噪音。ANR系统可以形成补偿信号，该补偿信号适于消除耳塞内部收听位置处的背景噪声。该补偿信号被提供给音频换能器(例如，扬声器)，其产生“抗噪”声波。该抗噪声波旨在经由相消干扰来衰减或消除收听位置处的背景噪声，以使仅剩余希望音频。因此，收听位置处的抗噪声波和背景噪声的组合导致两者的抵消，因此减少噪声。
当耳机的耳塞密封人(用户)的耳道时会发生阻塞效应。这个人可能会听到来自他们自己的语音的、因阻塞耳道的耳塞弹回的骨传导声音而造成的不舒适的声音。如果该密封非常好，这种阻塞效应就更明显。阻塞效应可以将耳道中的低频(通常低于500Hz)声压提高20dB或更多。
发明内容
提供该发明内容，以按简化形式介绍构思的选择，所述构思在下面详细描述中进一步描述。本发明内容不是旨在标识所要求保护的主题的关键特征或必要特征，也不是旨在被用作在确定所要求保护的主题的范围时的帮助。
提供了用于基于密封质量的确定来进行阻塞减少和ANR的方法和系统。该方法可以提供针对不同密封质量的耳机的更均匀性能。示例方法包括：接收声学信号。声学信号中的每一个可以表示具有语音分量和不想要的噪声中的至少一个的至少一个捕获的声音，所述语音分量包括用户的语音。所述示例方法还包括：至少部分地基于所述声学信号，确定所述用户耳道的、由耳机的耳内模块所提供的密封质量。所述示例方法根据密封质量在多个操作模式之间切换。例如，如果所述密封质量高于预定阈值，则所述方法可以继续进行，对所述声学信号执行阻塞减少，以改善所述语音分量。如果所述密封质量低于所述预定阈值，则所述方法可以继续进行，对所述声学信号执行主动降噪(ANR)，以减少所述不想要的噪声。
根据本公开另一示例实施方式，用于基于密封质量进行阻塞减少和ANR的方法的步骤被存储在包括指令的非暂时性机器可读介质上，该指令在由一个或更多个处理器实现时执行所述的步骤。
根据结合附图采取的下列描述，本公开的其它示例实施方式和方面将变清楚。
附图说明
实施方式在附图的图中通过示例而非限制的方式进行了例示，其中，相同标号表示相似部件，并且其中：
图1是根据示例性实施方式的系统和使用该系统的环境的框图。
图2是根据示例实施方式的适于实现本技术的耳机的框图。
图3是例示根据示例实施方式的用于基于密封质量的确定来执行阻塞减少和主动降噪的系统的框图。
图4是例示根据示例实施方式的用于基于密封质量的确定执行阻塞减少或者执行主动降噪的方法的步骤的流程图。
图5例示了可以被用于实现所公开技术的实施方式的计算机系统的示例。
具体实施方式
本技术提供了用于基于密封质量的确定来进行阻塞减少和ANR的方法和系统，其可以克服或者基本上消除与耳道中的不舒适声音相关联的问题。本技术的实施方式可以在被配置成接收和/或提供音频的任何基于耳塞的音频装置(如但不限于，蜂窝电话、MP3播放器、电话手机、助听器、以及耳机)上实践。虽然本技术的一些实施方式参照蜂窝电话的操作来进行描述，但本技术可以在任何音频装置上实践。
根据一示例实施方式，用于基于确定的密封质量来进行阻塞减少和ANR的方法包括以下步骤：接收声学信号。该方法可以提供针对不同密封质量的耳机的更均匀性能。对于该示例方法来说，每个声学信号都表示至少一个捕获的声音。所述捕获的声音可以包括语音分量和不想要的噪声中的至少一个。所述语音分量可以包括用户的语音。
该方法还包括以下步骤：至少部分地基于所述声学信号，至少确定耳道的密封质量。如果所述密封质量高于预定阈值，则该示例方法可以继续进行，对所述声学信号执行阻塞减少，以便改善所述语音分量。另选的是，如果所述密封质量低于所述预定阈值，则所述方法继续进行，对所述声学信号执行ANR，以减少所述不想要的噪声。
下面，参照图1，示出了适于执行阻塞减少和ANR的示例系统100及其环境的框图。该实施系统100至少包括：内部麦克风106、外部麦克风108、数字信号处理器(DSP)112，以及无线或有线接口114。内部麦克风106位于用户的耳道104内并且相对于外部声学环境102被遮蔽。外部麦克风108位于用户耳道104的外部并且暴露于外部声学环境102。在一些实施方式中，该示例系统100包括加速度计120。该加速度计120位于用户耳道104内部。
在各种实施方式中，麦克风106和108是模拟的或者数字的。在任一情况下，来自麦克风的输出以合适的采样频率被转换成同步脉冲编码调制(PCM)格式，并连接到DSP 112的输入端口。信号xin和xex分别是指表示由内部麦克风106和外部麦克风108捕获的声音的信号。
根据一些实施方式，DSP 112执行恰当信号处理任务以改善麦克风信号xin和xex的质量。DSP 112的输出(被称为发出信号(sout))通过无线电或有线接口114发送至希望目的地，例如，发送至网络或主机装置116(参见标识为sout上行链路的信号)。
在某些实施方式中，通过网络或主机装置116从合适的源(例如，经由无线无线电或有线接口114)接收信号。这被称为接收侧输入(receive-in)信号(rin)(在网络或主机装置116处标识为rin下行链路)。该接收侧输入信号可以经由无线电或有线接口114联接至DSP112以供进行处理。所得信号(被称为接收侧输出(receive-out)信号(rout))，通过数模转换器(DAC)110转换成模拟信号，然后连接到扬声器118，以便向用户呈现。在一些实施方式中，扬声器118与内部麦克风106位于同一耳道104中。在其它实施方式中，扬声器118位于与耳道104相对的耳道中。在图1的示例中，发现扬声器118与内部麦克风106位于同一耳道104中；因此，可能需要声学回声消除器(AEC)来防止所接收信号反馈至另一端。可选地，如果不需要对所接收信号加以进一步处理，那么接收侧输入信号(rin)可以联接至扬声器118而不通过DSP 112。在一些实施方式中，接收侧输入信号rin包括用于呈现给用户的音频内容(例如，音乐)。
图2示出了适于实现本公开的方法的示例耳机200。该耳机200包括用于用户的每只耳朵的示例耳内(ITE)模块202以及耳后(BTE)模块204和206。ITE模块202被配置成插入到用户的耳道中。BTE模块204和206被配置成放置在用户的耳朵后面(或者以其它方式置于附近)。在一些实施方式中，耳机200通过无线无线电链路与主机装置通信。无线无线电链路可以符合蓝牙低能耗(BLE)、其它蓝牙、802.11，或其它合适无线标准，并且可以针对隐私进行各种加密。示例耳机200是一非限制例，可以使用正好具有耳内“耳塞”的其它变型例来实践本技术。
在各种实施方式中，ITE模块202包括都相对于耳道面向内的内部麦克风106和扬声器118(如图1所示)。ITE模块202可以在耳道104与外部声学环境102之间提供声学隔离。在一些实施方式中，ITE模块202包括至少一个加速度计120(也在图1中示出)。
在一些实施方式中，每个BTE模块204和206都包括至少一个外部麦克风108(也在图1中示出)。BTE模块204可以包括DSP 112(如图1所示)、控制按钮、以及针对主机装置的蓝牙无线电链路。在某些实施方式中，BTE模块206包括具有充电电路的合适电池。
在2015年9月14日提交的题名为“Microphone Signal Fusion”的美国专利申请No.14/853947中更详细地讨论图1和2中的系统和耳机，其公开出于所有目的通过引用而并入于此。
在某些实施方式中，ITE模块202的密封足够好以隔离来自外部声学环境102的声波。然而，当讲话或唱歌时，用户可以听到由ITE模块202反射回到对应耳道中的用户自己的语音。用户语音的声音失真，因为，在行进穿过用户的头骨时，与通过空气传导的语音相比，语音的高频基本上被衰减并且因此具有更窄的有效带宽。结果，用户可以主要听到语音的低频部分。
图3是示出根据一示例实施方式中的、用于基于确定的密封质量来执行阻塞减少和ANR的系统300的框图。该示例系统300包括：密封质量确定模块310、主动降噪(ANR)模块320，以及阻塞减少模块330。系统300的这些模块可以被实现为存储在存储器中并由至少一个处理器(例如，DSP 112)执行的指令。在某些实施方式中，执行模块310-330的功能的至少一些指令被存储在存储器中并且由网络或主机装置116的至少一个处理器来执行。
在一些实施方式中，阻塞减少模块330可操作以至少接收内部麦克风信号Xin并且执行主动阻塞减少。该主动阻塞减少可以被用于消除失真语音的一些分量以恢复耳道104内的自然语音。该失真语音被耳道内部的内部麦克风捕获。该主动阻塞减少基于内部麦克风信号xin来生成第一信号。当通过扬声器118播放时，第一信号消除了失真语音的一些低频(例如，发现因头骨而造成的失真)，并且通过这样做改善了行进通过头骨而失真的语音质量。
在其它实施方式中，ANR模块320被用于降低由外部麦克风108从外部声学环境102捕获的外部不想要的噪声(也称为背景噪声)。ANR模块320接收由外部麦克风108捕获的信号Xex。ANR模块320基于信号Xex生成第二信号。当通过扬声器118播放时，第二信号消除耳道104内的外部不想要的噪声。
在各种实施方式中，可以经由使用有限带宽噪声消除来执行阻塞减少，这是因为，在行进通过人组织时，与通过空气传导的语音相比，用户语音的高频基本上被衰减并且因此具有更窄的有效带宽。因此，用于阻塞减少的噪声消除的带宽例如可以被限制在100Hz到1KHz之间。
在各种实施方式中，用于阻塞减少的第一操作模式(例如，利用阻塞减少模块330)与用于ANR的第二操作模式(例如，利用ANR模块320)之间的切换基于耳道的密封质量的确定。在各种实施方式中，密封质量确定模块310可操作以通过比较由外部麦克风108捕获的信号Xex和由内部麦克风106捕获的信号Xin来确定密封质量。根据各种实施方式，如果信号Xin包括与信号Xex的噪声分量相似的噪声分量，则这表明在耳机内部听到外部噪音，反映出密封质量差。耳朵的密封质量可以通过多种合适的方法来确定，包括比较内部和外部麦克风(mic)，但不限于该方法。适于确定密封质量的示例系统在______提交的题名为“AudioMonitoring and Adaptation Using Headset Microphones Inside of User”的美国专利申请No.XX/XXXXXX中被更详细地讨论，其公开出于所有目的通过引用而并入于此。
在各种实施方式中，当响应于确定耳道的密封不良而执行ANR时，来自位于ITE模块202内部的加速度计120的加速计数据可以被用于在用户的语音与外部麦克风信号Xex中的背景噪声之间进行辨别。例如，该加速度计可以被用于检测表示用户正在讲话的信号(例如，用户头部的运动)。在各种实施方式中，如果确定用户正在讲话，则ANR模块320以降低或消除背景噪声的方式降低噪声，而不会以会使其失真的方式抑制用户语音的语音分量。即，在各种实施方式中，所接收的声学信号中的背景噪声以也不会导致表示用户语音的声学信号部分失真的方式来加以抑制。适于在噪声消除和语音质量之间执行这种平衡的一示例音频处理系统在2010年7月8日提交的题名为“Method for Jointly Optimizing NoiseReduction and Voice Quality in a Mono or Multi-Microphone System”的美国专利申请No.12/832901(现为美国专利No.8473287)中进行了更详细讨论，其公开出于所有目的通过引用而并入于此。
尽管在图3中针对ANR和阻塞减少示出了单独的模块，但ANR模块320可以被配置成执行ANR和用于阻塞减少的噪声消除。
在某些实施方式中，ITE模块202可以包括机械通风孔。该机械通风孔可以包括电活性聚合物。机械通风孔可以被配置成闭合以实现更好的密封。响应于确定耳朵的密封良好(例如，密封质量高于预定阈值)并且用户的语音在耳道内失真，机械通风口可以开启以使处于耳道104内的用户语音行进到ITE模块202的外部。当机械通风孔开启时，失真的用户语音可能较少地反弹回至耳道，以减少呈现给用户的不舒适声音。同时，机械通风孔的开启会放进外部声学信号，其不仅可以从外部放进不失真的用户语音，而且也将背景噪声放进耳道内。可以执行主动噪声消除以仅消除该背景噪声，使得机械通风孔的开启不会使用户听到额外的外部背景噪声。通过示例而非限制的方式，该机械通风孔可以在用户开始电话通话时启用。在某些实施方式中，在存在外部噪音并且用户正在听音乐而不会说话或唱歌的同时，当密封质量高于阈值并且检测到语音(例如，来自不同于用户的扬声器)时，启用机械通风孔。机械通风孔还可以主动地减轻耳朵中的气压，以为用户提供更大的舒适度。
适于执行噪声消除和/或降噪的一示例音频处理系统在2010年7月8日提交的题名为“Method for Jointly Optimizing Noise Reduction and Voice Quality in a Monoor Multi-Microphone System”的美国专利申请No.12/832901(现为美国专利No.8473287)中进行了更详细讨论，其公开出于所有目的通过引用而并入于此。通过示例而非限制的方式，降噪方法在2008年6月30日提交的题名为“System and Method for Providing NoiseSuppression Utilizing Null Processing Noise Subtraction”的美国专利申请No.12/215980(现为美国专利No.9185487)中和在2007年1月29日提交的题名为“System andMethod for Utilizing Omni-Directional Microphones for Speech Enhancement”的美国专利申请No.11/699732(现为美国专利No.8194880)中进行了描述，其全部内容通过引用而并入于此。
图4是示出根据各种示例实施方式中的、用于基于密封质量的确定来执行阻塞减少或者执行ANR的方法400的步骤的流程图。该示例方法400可以在框402开始，确定由插入用户耳道的耳内(ITE)模块提供的该用户耳道的密封质量。在一些实施方式中，密封质量可以基于由外部麦克风108捕获的信号Xex与由内部麦克风106捕获的信号Xin的差异来确定。如果信号Xin包括与信号Xex的分量相似的分量，则它表明外部噪音被耳道内的内部麦克风(例如，在ITE模块中)捕获。
在判定框404中，基于耳道的密封质量进行判定。如果所述密封质量高于预定阈值，则在该示例中，方法400继续进行，执行阻塞减少。另选地，如果密封质量低于预定阈值，那么在该示例中，方法400在框408中执行ANR。该预定阈值可以基于例如由外部麦克风108捕获的信号Xex与由内部麦克风106捕获的信号Xin之间的信号差超过特定阈值来确定，所述特定阈值表明密封是使得外部麦克风108捕获的外部噪声因密封而没有被内部麦克风106捕获到。在一些实施方式中，预定阈值可以是值或其它关系的表，使得存在持续变化，例如，包括针对某些值的混合阻塞减少和ANR，而不仅仅是阻塞减少与ANR之间的切换。
图5示出了可以被用于实现本发明的一些实施方式的示例性计算机系统500。图5的计算机系统500可以在诸如计算系统、网络、服务器，或其组合的背景下实现。图5的计算机系统500包括一个或更多个处理器单元510和主存储器520。主存储器520部分地存储供处理器单元510执行的指令和数据。在这个示例中，主存储器520在处于操作中时存储可执行代码。图5的计算机系统500还包括：海量数据存储部530、便携式存储装置540、输出装置550、用户输入装置560、图形显示系统570，以及外围装置580。
图5所示的组件被描绘为经由单一总线590连接。这些组件可以通过一个或更多个数据传输装置连接。处理器单元510和主存储器520经由本地微处理器总线连接，而海量数据存储部530、外围装置580、便携式存储装置540，以及图形显示系统570经由一个或更多个输入/输出(I/O)总线连接。
海量数据存储部530(其可以利用磁盘驱动器、固态驱动器，或光盘驱动器来实现)是用于存储供处理器单元510使用的数据和指令的非易失性存储装置。海量数据存储部530存储用于实现本公开的实施方式的系统软件，用于将该软件加载到主存储器520中的目的。
便携式存储装置540结合便携式非易失性存储介质操作，如闪速驱动器、软盘、光盘、数字视频盘，或通用串行总线(USB)存储装置，以向和从图5的计算机系统500输入和输出数据和代码。用于实现本公开的实施方式的系统软件存储在这种便携式介质上，并且经由便携式存储装置540输入至计算机系统500。
用户输入装置560可以提供用户接口的一部分。用户输入装置560可以包括：一个或多个麦克风、用于输入字母数字和其它信息的诸如键盘的字母数字混编小键盘、或者诸如鼠标器、轨迹球、触控笔或光标方向键的定点装置。用户输入装置560还可以包括触摸屏。另外，如图5所示的计算机系统500包括输出装置550。合适的输出装置550包括：扬声器、打印机、网络接口，以及监视器。
图形显示系统570包括液晶显示器(LCD)或其它合适的显示装置。图形显示系统570可设置成接收文本和图形信息并处理该信息以供输出至显示装置。
外围装置580可以包括用于向计算机系统添加附加功能的任何类型的计算机支持装置。
设置在图5的计算机系统500中的组件是通常在可以适用于本公开的实施方式的计算机系统中发现的那些，并且旨在表示本领域公知的这种计算机组件的广泛类别。由此，图5的计算机系统500可以是个人计算机(PC)、手持式计算机系统、电话、移动计算机系统、工作站、平板电脑、平板式手机、移动电话、服务器、迷你计算机、大型计算机、可佩戴物，或者任何其它计算机系统。该计算机还可以包括不同的总线配置、联网平台、多处理器平台等。可以使用各种操作系统，包括UNIX、LINUX、WINDOWS、MAC OS、PALM OS、QNX ANDROID、IOS、CHROME、TIZEN，以及其它合适的操作系统。
针对各种实施方式的处理可以按基于云的软件来实现。在一些实施方式中，计算机系统500被实现为基于云的计算环境，如在一计算云内操作的虚拟机。在其它实施方式中，计算机系统500本身可以包括基于云的计算环境，其中按分布式方式执行计算机系统500的功能。由此，计算机系统500在被配置为计算云时，可以包括采用各种形式的多种计算装置，如将在下面更详细描述的。
一般而言，基于云的计算环境是通常将一大组处理器(如在web服务器内)的计算能力相结合的资源和/或组合一大组计算机存储器或存储装置的存储容量的资源。提供基于云的资源的系统可以由其所有者专门使用，或者这种系统可以被在该计算基础设施内部署应用以获得大的计算或存储资源的益处的外部用户访问。
该云例如可以由包括诸如计算机系统500的多个计算装置的web服务器的网络形成，其中每个服务器(或至少其多个)提供处理器和/或存储资源。这些服务器可以管理由多个用户(例如，云资源客户或其他用户)提供的工作负载。典型地讲，每个用户有时显著地将工作负载需求放在实时变化的云上。这些变化的性质和范围通常取决于与用户相关联的业务类型。
上面参照示例实施方式对本技术进行了描述。因此，针对本示例实施方式的其它变型例旨在被本公开所覆盖。

Claims (21)

1.一种用于音频处理的方法，该方法包括以下步骤：
接收声学信号，所述声学信号中的每一个表示具有语音分量和不想要的噪声中的至少一个的至少一个捕获的声音；
至少部分地基于所述声学信号确定用户的耳道的、由耳机的耳内模块所提供的密封质量；
如果所述密封质量高于预定阈值，则对所述声学信号执行阻塞减少，以改善所述语音分量；以及
如果所述密封质量低于所述预定阈值，则对所述声学信号执行主动降噪ANR，以减少所述不想要的噪声。
2.根据权利要求1所述的方法，其中，所述语音分量包括所述用户的语音。
3.根据权利要求1所述的方法，其中：
所述声学信号包括在所述耳道的外部捕获的第一声学信号和在所述耳道的内部捕获的第二声学信号；并且
确定所述密封质量的步骤包括以下步骤：将所述第一声学信号与所述第二声学信号进行比较。
4.根据权利要求1所述的方法，其中，所述阻塞减少包括针对所述声学信号的有限带宽执行主动噪声消除。
5.根据权利要求4所述的方法，其中，所述有限带宽处于100Hz到1kHz之间的频率范围内。
6.根据权利要求1所述的方法，其中，所述预定阈值是值的表，以使作为所述预定阈值的函数以连续地改变为基础来执行阻塞减少和所述ANR。
7.根据权利要求6所述的方法，其中，响应于确定所述语音分量具有表示所述密封质量高于所述预定阈值的质量，所述模块按第一模式操作。
8.根据权利要求1所述的方法，其中，所述ANR包括：
在所述语音分量与所述不想要的噪声之间辨别；以及
基于所述辨别的结果，消除所述声学信号中的所述不想要的噪声。
9.根据权利要求8所述的方法，其中，所述辨别基于来自位于所述耳道内部的加速度计的数据，所述加速度计提供表示所述用户正在讲话的一个或更多个信号。
10.根据权利要求9所述的方法，其中，在检测到所述用户正在讲话的同时，所述ANR被配置成，在对所述声学信号执行所述ANR的同时，限制表示所述用户的语音的所述语音分量的失真。
11.根据权利要求1所述的方法，其中，所述阻塞减少包括：
启用机械通风孔以允许来自所述耳道外部的声波透入所述耳道内部，所述机械通风孔响应于确定所述密封质量高于预定阈值而启用；以及
消除所述声波中的噪声。
12.一种用于音频处理的系统，该系统包括：
用于接收声学信号的至少一个处理器，每个声学信号表示具有语音分量和不想要的噪声中的至少一个的至少一个捕获的声音；
用于至少部分地基于所述声学信号确定用户的耳道的、由耳机的耳内模块所提供的密封质量的至少一个处理器；
如果所述密封质量高于预定阈值，则至少一个处理器被配置成，对所述声学信号执行阻塞减少，以改善所述语音分量；以及
如果所述密封质量低于所述预定阈值，则至少一个处理器被配置成，对所述声学信号执行主动降噪ANR，以减少所述不想要的噪声。
13.根据权利要求12所述的系统，其中，所述语音分量包括所述用户的语音。
14.根据权利要求12所述的系统，其中：
所述声学信号包括在所述耳道外部捕获的第一声学信号和在所述耳道内部捕获的第二声学信号；并且
通过将所述第一声学信号与所述第二声学信号进行比较来确定所述密封质量。
15.根据权利要求12所述的系统，其中，所述阻塞减少包括针对所述声学信号的有限带宽执行主动噪声消除，所述有限带宽处于100Hz到1kHz之间的频率范围内。
16.根据权利要求12所述的系统，其中，所述阻塞减少和所述ANR通过一模块来执行，该模块被配置成，基于所述密封质量的确定，按用于执行所述阻塞减少的第一模式和用于执行所述ANR的第二模式来操作。
17.根据权利要求16所述的系统，其中，响应于确定所述语音分量具有表示所述密封质量高于所述预定阈值的失真，所述模块按所述第一模式操作。
18.根据权利要求12所述的系统，其中，所述ANR包括：
在所述语音分量与所述不想要的噪声之间辨别；以及
基于所述辨别的结果，消除所述声学信号中的所述不想要的噪声。
19.根据权利要求18所述的系统，其中，所述辨别基于来自位于所述耳道内部的加速度计的数据，所述加速度计至少检测表示所述用户正在讲话的运动。
20.根据权利要求12所述的系统，其中，所述阻塞减少包括：
启用机械通风孔以允许来自所述耳道外部的声波透入所述耳道内部，所述机械通风孔响应于确定所述密封质量高于预定阈值而启用；以及
消除所述声波中的噪声。
21.一种将指令具体实施在其上的非暂时性计算机可读存储介质，该指令在由至少一个处理器执行时，执行一方法的步骤，所述方法包括以下步骤：
接收声学信号，所述声学信号中的每一个表示具有语音分量和不想要的噪声中的至少一个的至少一个捕获的声音；
至少部分地基于所述声学信号，确定用户的耳道的、由耳机的耳内模块所提供的密封质量；
如果所述密封质量高于预定阈值，则对所述声学信号执行阻塞减少，以改善所述语音分量；以及
如果所述密封质量低于所述预定阈值，则对所述声学信号执行主动降噪ANR，以减少所述不想要的噪声。
CN201680076099.0A 2015-12-30 2016-12-28 基于密封质量的阻塞减少和主动降噪 Pending CN108432264A (zh)

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