CN110199351A - 混合后回声消除系统及方法 - Google Patents

混合后回声消除系统及方法 Download PDF

Info

Publication number
CN110199351A
CN110199351A CN201880007022.7A CN201880007022A CN110199351A CN 110199351 A CN110199351 A CN 110199351A CN 201880007022 A CN201880007022 A CN 201880007022A CN 110199351 A CN110199351 A CN 110199351A
Authority
CN
China
Prior art keywords
audio signal
echo
background
filter
power
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201880007022.7A
Other languages
English (en)
Other versions
CN110199351B (zh
Inventor
S·韦尔斯-鲁特福德
M·T·亚伯拉罕
J·C·吉布斯
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shu Er Obtains Holding Co
Original Assignee
Shu Er Obtains Holding Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shu Er Obtains Holding Co filed Critical Shu Er Obtains Holding Co
Publication of CN110199351A publication Critical patent/CN110199351A/zh
Application granted granted Critical
Publication of CN110199351B publication Critical patent/CN110199351B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
    • H04M9/082—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic using echo cancellers
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208—Noise filtering
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208—Noise filtering
    • G10L21/0216—Noise filtering characterised by the method used for estimating noise
    • G10L21/0232—Processing in the frequency domain
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
    • H04M3/568—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities audio processing specific to telephonic conferencing, e.g. spatial distribution, mixing of participants
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208—Noise filtering
    • G10L2021/02082—Noise filtering the noise being echo, reverberation of the speech
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208—Noise filtering
    • G10L21/0216—Noise filtering characterised by the method used for estimating noise
    • G10L2021/02161—Number of inputs available containing the signal or the noise to be suppressed
    • G10L2021/02166—Microphone arrays; Beamforming

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Quality & Reliability (AREA)
  • Health & Medical Sciences (AREA)
  • Computational Linguistics (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Telephone Function (AREA)

Abstract

本发明提供回声消除系统及方法，所述回声消除系统及方法可从混合器的输出消除且抑制回声，所述混合器已混合来自例如麦克风等多个声源的音频信号。所述麦克风可能已例如在会议环境中从遥远位置或远端俘获语音及声音。所述回声消除可基于来自混合器的混合音频信号、从来自所述多个声源中的每一者的所述音频信号收集的信息及遥远音频信号而产生经回音消除混合音频信号。所述系统及方法可为计算高效型且资源友好型的。

Description

混合后回声消除系统及方法
相关申请案的交叉参考
本申请案主张于2017年1月13日提出申请的第15/406,172号美国专利申请案的权益，所述美国专利申请案的内容以其全文引用的方式并入本文中。
技术领域
本申请案一般来说涉及在混合来自多个声源(例如在会议系统中所使用的麦克风)的音频信号之后执行的回声消除。明确地说，本申请案涉及用于从混合器的输出消除且抑制回声同时高效地利用计算资源的系统及方法。
背景技术
会议环境(例如会议厅、会议场景等)可涉及使用用于俘获来自音频源的声音的麦克风及用于呈现来自遥远位置(还被称为远端)的音频的扬声器。举例来说，会议室中的人可正在与遥远位置处的人进行电话会议。通常，来自会议室的语音及声音可由麦克风俘获并发射到遥远位置，而来自遥远位置的语音及声音可被接收且经由会议室中的扬声器播放。可在会议室中使用多个麦克风以便最优地俘获语音及声音。
然而，麦克风可捕捉到来自遥远位置的经由扬声器播放的语音及声音。在此情况中，发射到遥远位置的音频可因此包含回音，即来自会议室的语音及声音以及来自遥远位置的语音及声音。如果不进行校正，那么发射到遥远位置的音频因此可由于此回音而为低质量或不可接受的。明确地说，遥远位置处的人不希望听到其自己的语音及声音。
现有回音消除系统可针对多个麦克风中的每一者而利用回声消除器，且随后混合器可混合并处理每一已消除回音的麦克风信号。然而，这些类型的系统可为计算密集型的且复杂的。举例来说，可需要进行单独且专用处理来对每一麦克风信号执行回声消除。此外，如果混合器是动态的(即，混合器频道中的一或多者上的增益随时间改变)，那么放置于混合器之后的典型回声消除器将因需要持续地重新适应由混合器产生的混合信号而效果不好。
因此，需要解决这些担忧的回声消除系统及方法。更明确地说，需要消除且抑制回声并与已混合多个声源的音频的混合器协作同时为计算高效型且资源友好型的回声消除系统及方法。
发明内容
本发明打算通过提供经设计以进行以下操作及其它操作的回声消除系统及方法来解决上述问题：(1)基于来自混合器的混合音频信号、从来自多个声源中的每一者的音频信号收集的信息及遥远音频信号而产生经回音消除混合音频信号；(2)通过基于将背景误差功率与隐藏误差功率进行比较而选择执行归一化最小均方算法的背景滤波器、隐藏滤波器及混合滤波器的各种分接头系数来产生经回音消除混合音频信号；及(3)当背景滤波器与隐藏滤波器尚未收敛时，使用非线性处理器来依据所述经回音消除混合音频信号而产生经回音抑制混合音频信号。
在一实施例中，一种系统包含：存储器；多个声源；混合器，其与所述多个声源及所述存储器进行通信；及回声消除器，其与所述混合器、所述存储器及遥远音频信号进行通信。所述多个声源可各自经配置以产生音频信号。所述混合器可经配置以混合来自所述多个声源中的每一者的所述音频信号以产生混合音频信号。所述回声消除器可经配置以基于所述混合音频信号、从来自所述多个声源中的每一者收集的信息及所述遥远音频信号而产生经回音消除混合音频信号。
在另一实施例中，一种方法包含：从多个声源中的每一者接收音频信号；接收遥远音频信号；使用混合器混合来自所述多个声源中的每一者的所述音频信号以产生混合音频信号；及使用回声消除器基于所述混合音频信号、从来自所述多个声源中的每一者的所述音频信号收集的信息及所述遥远音频信号而产生经回音消除混合音频信号。
依据以下详细说明及附图，将明了且更全面地理解这些及其它实施例以及各种排列及方面，以下详细说明及附图陈述指示其中可采用本发明的原理的各种方式的说明性实施例。
附图说明
图1是根据一些实施例的包含回声消除器的通信系统的示意图。
图2是根据一些实施例的供在图1的通信系统中使用的回声消除器的示意图。
图3是根据一些实施例的图解说明用于使用图1的通信系统执行回声消除的操作的流程图。
图4是根据一些实施例的图解说明用于使用图1的通信系统来运行背景滤波器及隐藏滤波器同时执行回声消除的操作的流程图。
图5是根据一些实施例的图解说明用于使用图1的通信系统来运行非线性处理器以产生经回音抑制混合音频信号的操作的流程图。
具体实施方式
以下说明根据本发明的原理描述、图解说明且例示本发明的一或多个特定实施例。提供此说明并非将本发明限于本文中所描述的实施例，而是阐释及教示本发明的原理，以此方式使得所属领域的技术人员能够理解这些原理，且在理解的情况下能够应用这些原理来不仅实践本文中所描述的实施例，而且实践根据这些原理可想到的其它实施例。本发明的范围打算涵盖可在字面上或在等效内容的原则下归属于所附权利要求书的范围内的所有此些实施例。
应注意，在说明及图式中，相似或基本上类似元件可利用相同元件符号来标示。然而，有时可利用不同数字标示这些元件，例如在其中此标示会促进更清楚说明的情形中。另外，本文中所陈述的图式未必按比例绘制，且在一些例子中，比例可被放大以更清楚地描绘特定特征。此类标示及图式实践未必暗指潜在实质性目的。如上所述，本说明书打算被视为一个整体且根据如本文中所教示的本发明的原理解释且被所属领域的技术人员理解。
本文中所描述的回声消除系统及方法可基于来自混合器的混合音频信号、从来自多个声源中的每一者的音频信号收集的信息及遥远音频信号而产生经回音消除混合音频信号，同时为计算高效型且资源友好型的。所述系统及方法可不需要针对每一声源(例如，麦克风)均使用单独回声消除器，同时维持单独回声消除器的消除优点。此外，经减小计算负荷可允许使用更少的昂贵硬件(例如，处理器及/或DSP)，及/或使得通信系统100中包含其它特征。可透过使用通信系统100及回声消除器112来提高用户满意度。
图1是用于使用麦克风102俘获来自环境中的音频源的声音且使用扬声器104呈现来自遥远位置的音频的通信系统100的示意图。图2是通信系统100中所包含的回声消除器112的示意图。通信系统100可使用回声消除器112来产生经回音消除混合音频信号，回声消除器112处理来自混合器106的混合音频信号。经回音消除混合音频信号可减弱从遥远位置接收的经由扬声器104播放的声音。以此方式，可在遥远位置处的人不会听见其自己的语音及声音的不期望回音的情况下将经回音消除混合音频信号发射到遥远位置。
举例来说，例如会议室等环境可利用通信系统100来促进与遥远位置处的人的通信。麦克风102的类型及其在特定环境中的放置可取决于音频源的位置、物理空间要求、美感、房间布局及/或其它考虑。举例来说，在一些环境中，可将麦克风放置于接近音频源的桌子或讲台上。举例来说，在其它环境中，可将麦克风安装在高处以俘获来自整个房间的声音。通信系统100可与任何类型及任何数目的麦克风102协作。通信系统100中所包含的各种组件可使用可由一或多个服务器或计算机(例如具有处理器及存储器的计算装置)执行的软件来实施，及/或通过硬件(例如，离散逻辑电路、专用集成电路(ASIC)、可编程门阵列(PGA)、现场可编程门阵列(FPGA))等实施。
图3到5图解说明用于利用通信系统100及回声消除器112的方法的实施例。明确地说，图3图解说明用于使用通信系统100来执行回声消除的过程300，图4图解说明用于在回声消除器112中运行背景滤波器202及隐藏滤波器204的方法324，且图5图解说明在回声消除器112中有条件地运行非线性处理器212的方法312。通常，根据实施例的计算机程序产品包含其中含有计算机可读程序代码的计算机可用存储媒体(例如，标准随机存取存储器(RAM)、光盘、通用串行总线(USB)驱动器等)，其中所述计算机可读程序代码经调适以由处理器(例如，与操作系统协作)执行以实施下文所描述的方法。就此来说，程序代码可以任何所要语言实施，且可实施为机器代码、汇编代码、字节代码、可译码源代码等(例如，经由C、C++、Java、Actionscript、Objective-C、Javascript、CSS、XML及/或其它)。
参考图1，通信系统100可包含麦克风102、扬声器104、混合器106、切换器108、存储器110、回声消除器112、快速傅里叶变换(FFT)模块114、116、118及快速傅里叶逆变换模块120。麦克风102中的每一者可检测环境中的声音且将所述声音转换成音频信号。在实施例中，来自麦克风102的一些或所有音频信号可由波束成形器(未展示)处理以产生一或多个经波束成形音频信号，如此项技术中已知。因此，虽然系统及方法在本文中被描述为使用来自麦克风102的音频信号，但预期系统及方法还可利用任何类型的声源，例如由波束成形器产生的经波束成形音频信号。
混合器106可接收来自麦克风102中的每一者的音频信号(例如，在图3中所展示的过程300的步骤318处)以产生混合音频信号(例如，在步骤326处)。混合器106所产生的混合音频信号可符合所要音频混合，使得来自特定麦克风的音频信号得以强调且来自其它麦克风的音频信号不予强调或被抑制。在共同让与的专利(第4,658,425号美国专利及第5,297,210号美国专利)中揭示了音频混合器的例示性实施例，上述专利中的每一者以其全文引用的方式并入。例如在步骤328处，可使用快速傅里叶变换模块116将在步骤326处产生的混合音频信号转换成频域。
同时，可通过快速傅里叶变换模块114将来自麦克风102中的每一者的音频信号转换成频域，例如在步骤320处。举例来说，在步骤322处，可通过信号选择机构(例如，切换器108)选择并传达这些经转换音频信号中的一者。信号选择机构可收集关于每一声源(或声源子组)的信息(例如来自麦克风102的音频信号或经波束成形音频信号)，以便优化对所有声源的混合的调适。虽然图1中图解说明切换器108，但涵盖其它信号选择机构，例如第二混合器，其可通过使来自其它麦克风102的一些或所有音频信号衰减来从特定麦克风102选择音频信号。
来自麦克风102的音频信号中的每一者可由切换器108选择且继而处理，使得背景滤波器202及隐藏滤波器204(在回声消除器112中)一次对音频信号中的一者起作用。切换器108可能够在特定持续时间内对来自麦克风102的音频信号中的每一者进行调适，使得通信系统100可适当地执行回音消除，而不管混合器106的类型、混合器106的当前状态如何或混合器106是否正经历状态改变。在步骤324处，回声消除器112中的背景滤波器202及隐藏滤波器204可处置选定音频信号。下文关于图4更详细地描述步骤324。
图4描述用于运行回声消除器112中的背景滤波器202及隐藏滤波器204的步骤324的实施例的进一步细节。背景滤波器202可为有限脉冲响应滤波器，其对选定音频信号运行归一化最小均方算法(例如，在步骤402处)，且可产生环境中的麦克风m的样本n的脉冲响应的估计值背景滤波器202还可测量选定音频信号的背景误差功率(backgrounderror power)，例如在步骤404处。背景滤波器202可具有用于按比例调节一系列有限延迟分接头的分接头系数h。可根据以下方程式通过背景滤波器202测量选定音频信号的背景误差e[n]：
其中d[n]是音频信号，x[n]是来自遥远音频信号的样本的向量，且表示共轭转置运算。可基于背景误差e[n]、例如通过使用背景误差平方的量值的时间平均值而测量背景误差功率。
隐藏滤波器204可为有限脉冲响应滤波器，其在步骤406处处置遥远音频信号及由背景滤波器202形成的回音路径脉冲响应的先前未加权估计值。未加权的先前估计值对应于混合滤波器208(下文所描述)内的选定音频信号的未加权部分。隐藏滤波器204可(例如，在步骤408处)通过从选定音频信号减去遥远音频信号来测量选定音频信号的隐藏误差。可基于隐藏误差、例如通过使用隐藏误差平方的量值的时间平均值而测量隐藏误差功率。隐藏滤波器204可具有用于按比例调节一系列有限延迟分接头的分接头系数h。
可在步骤410处通过误差比较模块206将在步骤404处测量的背景误差功率与在步骤408处测量的隐藏误差功率进行比较。误差比较模块206可在步骤410处确定背景误差功率是否大于隐藏误差功率。如果在步骤410处确定背景误差功率大于隐藏误差功率，那么过程324可继续进行到步骤412。在步骤412处，可选择背景滤波器202的分接头系数并将其存储于存储器110中。在步骤414处，可从存储器110拷贝来自步骤412的所存储分接头系数且使用所述分接头系数来替换隐藏滤波器204的分接头系数。在步骤414处也可从存储器110拷贝来自步骤412的所存储分接头系数且使用所述分接头系数来更新混合滤波器208的分接头系数，如下文更详细地描述。
在步骤414之后，过程324可继续进行到步骤416。另外，如果在步骤410处确定背景误差功率不大于隐藏误差功率，那么过程324可继续进行到步骤416。在步骤416处，可确定混合器106的频道比例因子a是否已改变。混合器106的频道比例因子可自动地或手动地(例如，通过用户调整)改变。如果在步骤416处混合器106的频道比例因子已改变，那么过程324可继续进行到步骤418。在步骤418处，可对应于已改变的频道比例因子而更新混合滤波器208的分接头权重，例如通过加上权重差乘以频道脉冲响应估计值，如下文更详细地描述。
在步骤418之后，过程324可继续进行到步骤420。另外，如果在步骤416处确定混合器106的频道比例尚未改变，那么过程324可继续进行到步骤420。在步骤420处，可根据以下方程式更新背景滤波器202的分接头系数：
其中α是步长参数，*表示复共轭运算，且||·||表示l2范数。接着，过程324可返回到过程300且明确地说返回到步骤308，如下文所描述。
返回到图3的过程300，虽然音频信号是从麦克风102接收且在过程300的步骤318到328及过程324的步骤402到420中进行处理，但可从遥远位置(即远端)接收遥远音频信号，例如步骤302。遥远音频信号可为环境中的扬声器104上的输出，例如在步骤304处。在步骤306处，还可使用快速傅里叶变换模块118将遥远音频信号转换成频域。此时，可看到回声消除器112可从混合器106接收混合音频信号，从切换器108接收选定音频信号，且从遥远位置(远端)接收遥远音频信号。如先前所描述，来自混合器106的混合音频信号、来自切换器108的选定音频信号及遥远音频信号中的每一者可已由各别FFT模块114、116、118转换成频域。因此，回声消除器112可在频域中操作，使得更快地且以高质量执行回声消除。
在步骤308处，回声消除器112可运行混合滤波208。混合滤波208可为麦克风102的所有音频信号的有限脉冲响应的加权总和使得：
其中am是特定麦克风102的频道比例(权重或增益)。混合滤波器208处理从远端接收到的遥远音频信号且产生经滤波遥远音频信号，所述经滤波遥远音频信号是在混合器的输出处产生的回音信号的估计值。明确地说，混合滤波模拟由麦克风102检测到的回音路径与混合器106之间的耦合。
如先前所描述，如果在步骤410处背景误差功率大于隐藏误差功率，那么在过程324的步骤414处，可由背景滤波器的分接头系数更新混合滤波器208的分接头系数。当此发生时，可通过以下方程式给出下一样本n+1的加权总和
其中m’是特定麦克风102的选定音频信号。
还如先前所描述，如果在步骤416处混合器106的频道比例因子已改变，那么在过程324的步骤418处可更新混合滤波器208的分接头权重。当此发生时，可通过加上权重差乘以频道脉冲响应估计值执行所述更新。明确地说，可通过以下方程式给出下一样本n+1的加权总和
于在步骤308处混合滤波器208产生经滤波遥远音频信号之后，过程300可继续进行到步骤310。在步骤310处，回声消除器112可产生经回音消除混合音频信号。明确地说，可从来自混合器106的混合音频信号减去由混合滤波器208产生的经滤波遥远音频信号，如图2中所展示的求和点214所表示。在步骤312处，可取决于来自混合滤波器208的经滤波遥远音频信号与从求和点214输出的经回音消除混合音频信号的所估计残余回音功率的相干性，通过非线性处理器处理经回音消除混合音频信号。下文关于图5描述步骤312的细节。
图5描述用于在回声消除器112中运行非线性处理器212以产生经回音抑制混合音频信号的步骤312的实施例的进一步细节。明确地说，于在步骤310处产生经回音消除混合音频信号之后，如必要，可确定是否运行非线性处理器212以进一步抑制任何回音并产生舒适噪声(例如，合成背景噪声)。可(举例来说)在以下情况中运行非线性处理器212：当仅存在来自遥远位置(远端)的语音及声音时，及当背景滤波器202及隐藏滤波器204尚未收敛时。
在步骤502处，可通过混合估计器210测量来自混合滤波器208的经滤波遥远音频信号的输出相干性。输出相干性是经滤波遥远音频信号与来自麦克风102的音频信号的频率含量之间的关系的度量。混合估计器210可在求和点214处的回音消除之前及在求和点214处的回音消除之后依据混合器106的输出而测量相干性。如果相干性为高，那么信号可被视为在频域中是相关的。可在步骤504处通过混合估计器210估计从求和点214输出的经回音消除混合音频信号的残余回音功率。如果(1)输出相干性大于预定阈值(例如，表明麦克风102中仅存在回音信号)；或(2)残余回音功率大于来自混合器106的混合音频信号的功率的一半，那么在步骤508处，非线性处理器212可处理经回音消除混合音频信号以产生经回音抑制混合音频信号。在步骤508之后，过程312可继续进行到过程300的步骤314。然而，如果这些条件均不满足，那么过程312可从步骤506继续进行到过程300的步骤314。
返回到图3，在步骤314处，可将(1)在步骤310处产生的经回音消除混合音频信号(如果未在步骤312处执行非线性处理器212)或(2)在步骤508处产生的经回音抑制混合音频信号(如果在步骤312处执行了非线性处理器212)转换成时域。在步骤316处，可将所得经回音消除或经回音抑制音频信号发射到遥远位置(远端)。过程300可返回到步骤322以选择并传达来自麦克风102的音频信号中的另一者以供在步骤324及308到316处进行处理，如先前所描述。以此方式，当产生经回音消除或经回音抑制音频信号时，可利用来自多个麦克风102中的每一者的音频信号的信息。
图中的任何过程说明或框应被理解为表示模块、分段或代码部分，所述代码部分包含用于实施过程中的具体逻辑功能或步骤的一或多个可执行指令，且替代实施方案包含于本发明的实施例的范围内，其中功能可不以来自所展示或所论述的次序的次序执行，取决于所涉及的功能性而包含基本上同时执行或以相反次序执行，如所属领域的技术人员将理解。
本发明打算阐释如何更改及使用根据本技术的各种实施例而非限制本技术的真实、预期及清楚的范围及精神。前述说明并不打算是详尽的或限于所揭示的精确形式。鉴于以上教示，修改及变化是可能的。挑选并描述实施例以提供对所描述技术的原理及其实际应用的最佳说明，且使得所属领域的技术人员能够在各种实施例中且以如适于所涵盖的特定用途的各种修改利用本技术。当根据清楚地、合法地且公正地授予的范围加以解释时，所有此些修改及变化均在如由所附权利要求书所确定的实施例的范围内，此可在本专利申请案及其全部等效内容的申请期间修订。

Claims (22)

1.一种系统，其包括：
(A)存储器；
(B)多个声源，其各自经配置以产生音频信号；
(C)混合器，其与所述多个声源及所述存储器进行通信，所述混合器经配置以将来自所述多个声源中的每一者的所述音频信号混合以产生混合音频信号；及
(D)回声消除器，其与所述混合器、所述存储器及遥远音频信号进行通信，所述回声消除器经配置以基于所述混合音频信号、从来自所述多个声源中的每一者的所述音频信号收集的信息及所述遥远音频信号而产生经回音消除混合音频信号。
2.根据权利要求1所述的系统：
其进一步包括与所述多个声源及所述回声消除器进行通信的信号选择机构，所述信号选择机构经配置以从所述多个声源中的至少一者选择至少一个音频信号并将所述至少一个选定音频信号传达到所述回声消除器；
其中所述回声消除器进一步经配置以基于所述混合音频信号、从所述至少一个选定音频信号收集的信息及所述遥远音频信号而产生所述经回音消除混合音频信号。
3.根据权利要求1所述的系统，其中所述回声消除器包括：
背景滤波器，其具有背景滤波器分接头系数且经配置以使用归一化最小均方算法来测量来自所述多个声源中的每一者的所述音频信号的背景误差功率；
隐藏滤波器，其具有隐藏滤波器分接头系数且经配置以基于来自所述多个声源中的每一者的所述音频信号及所述遥远音频信号而测量来自所述多个声源中的每一者的所述音频信号的隐藏误差功率；及
误差比较模块，其与所述背景滤波器及所述隐藏滤波器进行通信，所述误差比较模块经配置以：
将所述背景误差功率与所述隐藏误差功率进行比较；且
如果所述背景误差功率大于所述隐藏误差功率，那么选择所述背景滤波器分接头系数并将其存储于所述存储器中。
4.根据权利要求3所述的系统，其中所述误差比较模块进一步经配置以：在所述背景误差功率大于所述隐藏误差功率的情况下，从所述存储器拷贝所述所存储背景滤波器分接头系数以替换所述隐藏滤波器分接头系数。
5.根据权利要求3所述的系统，其中所述背景滤波器经配置以根据以下方程式而测量背景误差e[n]：
其中d[n]是所述音频信号中的一者，x[n]是来自所述遥远音频信号的样本的向量，且表示共轭转置运算；
其中基于所述背景误差而估计所述背景误差功率。
6.根据权利要求3所述的系统，其中所述误差比较模块进一步经配置以根据以下方程式而更新所述背景滤波器分接头系数：
其中α是步长参数，*表示复共轭运算，且||·||表示l2范数。
7.根据权利要求1所述的系统，其中所述回声消除器进一步包括：
混合滤波器，其具有混合滤波器分接头系数及分接头权重，且经配置以对所述遥远音频信号进行滤波以产生经滤波遥远音频信号。
8.根据权利要求3所述的系统，其中：
所述回声消除器进一步包括混合滤波器，所述混合滤波器具有混合滤波器分接头系数及分接头权重，且经配置以对所述遥远音频信号进行滤波以产生经滤波遥远音频信号；且
所述误差比较模块进一步经配置以：在所述背景误差功率大于所述隐藏误差功率的情况下，从所述存储器拷贝所述所存储背景滤波器分接头系数，以通过组合当前未被调适的所述多个声源中的每一者的所述隐藏滤波器分接头系数与对应于当前被调适的所述声源的最近已更新背景滤波器分接头系数来更新所述混合滤波器分接头系数。
9.根据权利要求3所述的系统，其中：
所述回声消除器进一步包括混合滤波器，所述混合滤波器具有混合滤波器分接头系数及分接头权重，且经配置以对所述遥远音频信号进行滤波以产生经滤波遥远音频信号；且
所述混合滤波器进一步经配置以在所述混合器的频道比例因子已改变的情况下，通过对应于所述已改变频道比例因子、通过加上权重差乘以频道脉冲响应估计值来更新所述分接头权重而被更新。
10.根据权利要求7所述的系统，其中所述回声消除器经配置以通过从所述混合音频信号减去所述经滤波遥远音频信号来产生所述经回音消除混合音频信号。
11.根据权利要求10所述的系统，其中所述回声消除器进一步包括：
混合估计器，其与所述混合器、所述混合滤波器及所述经回音消除混合音频信号进行通信，所述混合估计器经配置以：
测量所述经滤波遥远音频信号的输出相干性；且
估计所述经回音消除混合音频信号的残余回音功率；及
非线性处理器，其经配置以在所述输出相干性超出预定阈值的情况下或在所述残余回音功率超出所述混合音频信号的功率的一半的情况下，处理所述经回音消除混合音频信号以产生经回音抑制混合音频信号。
12.一种方法，其包括：
从多个声源中的每一者接收音频信号；
接收遥远音频信号；
使用混合器混合来自所述多个声源中的每一者的所述音频信号以产生混合音频信号；及
使用回声消除器基于所述混合音频信号、从来自所述多个声源中的每一者的所述音频信号收集的信息及所述遥远音频信号而产生经回音消除混合音频信号。
13.根据权利要求12所述的方法：
其进一步包括：使用信号选择机构从所述多个声源中的至少一者选择至少一个选定音频信号，并将所述至少一个选定音频信号传达到所述回声消除器；
其中产生所述经回音消除混合音频信号包括：基于所述混合音频信号、从所述至少一个选定音频信号收集的信息及所述遥远音频信号而产生所述经回音消除混合音频信号。
14.根据权利要求12所述的方法，其中产生所述经回音消除混合音频信号包括：
在具有背景滤波器分接头系数的背景滤波器中，使用归一化最小均方算法测量来自所述多个声源中的每一者的所述音频信号的背景误差功率；
使用具有隐藏滤波器分接头系数的隐藏滤波器、基于来自所述多个声源中的每一者的所述音频信号及所述遥远音频信号而测量来自所述多个声源中的每一者的所述音频信号的隐藏误差功率；
将所述背景误差功率与所述隐藏误差功率进行比较；及
如果所述背景误差功率大于所述隐藏误差功率，那么选择所述背景滤波器分接头系数并将其存储于存储器中。
15.根据权利要求14所述的方法，其进一步包括：如果所述背景误差功率大于所述隐藏误差功率，那么从所述存储器拷贝所述所存储背景滤波器分接头系数以替换所述隐藏滤波器分接头系数。
16.根据权利要求14所述的方法，其中：
测量所述背景误差功率包括根据以下方程式而测量背景误差e[n]：
其中d[n]是所述音频信号中的一者，x[n]是来自所述遥远音频信号的样本的向量，且表示共轭转置运算；及
基于所述背景误差而估计所述背景误差功率。
17.根据权利要求14所述的方法，其进一步包括根据以下方程式而更新所述背景滤波器分接头系数：
其中α是步长参数，*表示复共轭运算，且||·||表示l2范数。
18.根据权利要求12所述的方法，其进一步包括使用具有混合滤波器分接头系数及分接头权重的混合滤波器来对所述遥远音频信号进行滤波以产生经滤波遥远音频信号。
19.根据权利要求14所述的方法，其进一步包括：
使用具有混合滤波器分接头系数及分接头权重的混合滤波器来对所述遥远音频信号进行滤波以产生经滤波遥远音频信号；及
在所述背景误差功率大于所述隐藏误差功率的情况下，从所述存储器拷贝所述所存储背景滤波器分接头系数以通过组合当前未被调适的所述多个声源中的每一者的所述隐藏滤波器分接头系数与对应于当前被调适的所述声源的最近已更新背景滤波器分接头系数来更新所述混合滤波器分接头系数。
20.根据权利要求14所述的方法，其进一步包括：
使用具有混合滤波器分接头系数及分接头权重的混合滤波器来对所述遥远音频信号进行滤波以产生经滤波遥远音频信号；及
在所述混合器的频道比例因子已改变的情况下，通过对应于所述已改变频道比例因子、通过加上权重差乘以频道脉冲响应估计值来更新所述分接头权重而更新所述混合滤波器。
21.根据权利要求18所述的方法，其中产生所述经回音消除混合音频信号包括从所述混合音频信号减去所述经滤波遥远音频信号。
22.根据权利要求21所述的方法，其进一步包括：
使用混合估计器来测量所述经滤波遥远音频信号的输出相干性；
使用所述混合估计器来估计所述经回音消除混合音频信号的残余回音功率；及
在所述输出相干性超出预定阈值的情况下或在所述残余回音功率超出所述混合音频信号的功率的一半的情况下，使用非线性处理器来处理所述经回音消除混合音频信号以产生经回音抑制混合音频信号。
CN201880007022.7A 2017-01-13 2018-01-10 混合后回声消除系统及方法 Active CN110199351B (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US15/406,172 2017-01-13
US15/406,172 US10367948B2 (en) 2017-01-13 2017-01-13 Post-mixing acoustic echo cancellation systems and methods
PCT/US2018/013155 WO2018132465A1 (en) 2017-01-13 2018-01-10 Post-mixing acoustic echo cancellation systems and methods

Publications (2)

Publication Number Publication Date
CN110199351A true CN110199351A (zh) 2019-09-03
CN110199351B CN110199351B (zh) 2024-04-12

Family

ID=61599565

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201880007022.7A Active CN110199351B (zh) 2017-01-13 2018-01-10 混合后回声消除系统及方法

Country Status (7)

Country Link
US (3) US10367948B2 (zh)
EP (1) EP3568854B1 (zh)
JP (1) JP7127032B2 (zh)
KR (1) KR102432300B1 (zh)
CN (1) CN110199351B (zh)
TW (1) TWI749144B (zh)
WO (1) WO2018132465A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111798827A (zh) * 2020-07-07 2020-10-20 上海立可芯半导体科技有限公司 回声消除方法、装置、系统和计算机可读介质
CN112583431A (zh) * 2019-09-29 2021-03-30 瑞昱半导体股份有限公司 接收器及相关的信号处理方法

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9554207B2 (en) 2015-04-30 2017-01-24 Shure Acquisition Holdings, Inc. Offset cartridge microphones
US9565493B2 (en) 2015-04-30 2017-02-07 Shure Acquisition Holdings, Inc. Array microphone system and method of assembling the same
US10225395B2 (en) * 2015-12-09 2019-03-05 Whatsapp Inc. Techniques to dynamically engage echo cancellation
US10367948B2 (en) 2017-01-13 2019-07-30 Shure Acquisition Holdings, Inc. Post-mixing acoustic echo cancellation systems and methods
US10594869B2 (en) * 2017-08-03 2020-03-17 Bose Corporation Mitigating impact of double talk for residual echo suppressors
US10542153B2 (en) 2017-08-03 2020-01-21 Bose Corporation Multi-channel residual echo suppression
EP3692704B1 (en) 2017-10-03 2023-09-06 Bose Corporation Spatial double-talk detector
EP4273858A1 (en) 2018-04-05 2023-11-08 Telefonaktiebolaget LM Ericsson (publ) Support for generation of comfort noise, and generation of comfort noise
EP3804356A1 (en) 2018-06-01 2021-04-14 Shure Acquisition Holdings, Inc. Pattern-forming microphone array
US11297423B2 (en) 2018-06-15 2022-04-05 Shure Acquisition Holdings, Inc. Endfire linear array microphone
US10938994B2 (en) * 2018-06-25 2021-03-02 Cypress Semiconductor Corporation Beamformer and acoustic echo canceller (AEC) system
CN108986836A (zh) * 2018-08-29 2018-12-11 质音通讯科技（深圳）有限公司 一种回声抑制器的控制方法、装置、设备和存储介质
CN112889296A (zh) 2018-09-20 2021-06-01 舒尔获得控股公司 用于阵列麦克风的可调整的波瓣形状
JP7334406B2 (ja) * 2018-10-24 2023-08-29 ヤマハ株式会社 アレイマイクロフォンおよび収音方法
TWI696174B (zh) * 2018-11-20 2020-06-11 宇智網通股份有限公司 音訊偵測裝置以及音訊偵測方法
TW202044236A (zh) 2019-03-21 2020-12-01 美商舒爾獲得控股公司 具有抑制功能的波束形成麥克風瓣之自動對焦、區域內自動對焦、及自動配置
WO2020191354A1 (en) 2019-03-21 2020-09-24 Shure Acquisition Holdings, Inc. Housings and associated design features for ceiling array microphones
US11558693B2 (en) 2019-03-21 2023-01-17 Shure Acquisition Holdings, Inc. Auto focus, auto focus within regions, and auto placement of beamformed microphone lobes with inhibition and voice activity detection functionality
US10964305B2 (en) 2019-05-20 2021-03-30 Bose Corporation Mitigating impact of double talk for residual echo suppressors
WO2020237206A1 (en) 2019-05-23 2020-11-26 Shure Acquisition Holdings, Inc. Steerable speaker array, system, and method for the same
US11302347B2 (en) 2019-05-31 2022-04-12 Shure Acquisition Holdings, Inc. Low latency automixer integrated with voice and noise activity detection
WO2020252629A1 (zh) * 2019-06-17 2020-12-24 深圳市汇顶科技股份有限公司 残余回声检测方法、残余回声检测装置、语音处理芯片及电子设备
EP4018680A1 (en) 2019-08-23 2022-06-29 Shure Acquisition Holdings, Inc. Two-dimensional microphone array with improved directivity
WO2021126670A1 (en) 2019-12-18 2021-06-24 Dolby Laboratories Licensing Corporation Filter adaptation step size control for echo cancellation
US11552611B2 (en) 2020-02-07 2023-01-10 Shure Acquisition Holdings, Inc. System and method for automatic adjustment of reference gain
WO2021243368A2 (en) 2020-05-29 2021-12-02 Shure Acquisition Holdings, Inc. Transducer steering and configuration systems and methods using a local positioning system
GB2597492B (en) * 2020-07-23 2022-08-03 Nissan Motor Mfg Uk Ltd Gesture recognition system
CN112151051B (zh) * 2020-09-14 2023-12-19 海尔优家智能科技（北京）有限公司 音频数据的处理方法和装置及存储介质
JP2024505068A (ja) 2021-01-28 2024-02-02 シュアー アクイジッション ホールディングス インコーポレイテッド ハイブリッドオーディオビーム形成システム
US20230104602A1 (en) 2021-10-04 2023-04-06 Shure Acquisition Holdings, Inc. Networked automixer systems and methods
WO2023133513A1 (en) 2022-01-07 2023-07-13 Shure Acquisition Holdings, Inc. Audio beamforming with nulling control system and methods

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE775247A (fr) * 1970-11-16 1972-03-01 Western Electric Co Montage suppresseur d'echo pour circuits de transmission
CN1204425A (zh) * 1995-12-18 1999-01-06 艾利森电话股份有限公司 使用残留信号中功率估算的回声消除的方法和设备
AU2004200802A1 (en) * 1998-07-13 2004-03-25 Telefonaktiebolaget Lm Ericsson (Publ) Digital adaptive filter and acoustic echo canceller using the same
KR20040083109A (ko) * 2003-03-21 2004-10-01 (주)씨앤에스 테크놀로지 간섭신호에 강인한 음향 반향 제거장치
JP2006067127A (ja) * 2004-08-25 2006-03-09 Matsushita Electric Works Ltd 残響除去方法及びその装置
JP2006148330A (ja) * 2004-11-17 2006-06-08 Nec Corp エコーキャンセラ、回線交換システム及びエコーキャンセリング方法
US20080175375A1 (en) * 2007-01-24 2008-07-24 Oki Electric Industry Co., Ltd. Echo canceler and echo canceling method
CN101388213A (zh) * 2008-07-03 2009-03-18 天津大学 一种预回声控制方法
GB201316598D0 (en) * 2013-09-18 2013-10-30 Hellosoft Inc Acoustic echo cancellation
US20140307882A1 (en) * 2013-04-11 2014-10-16 Broadcom Corporation Acoustic echo cancellation with internal upmixing
WO2016146316A1 (en) * 2015-03-18 2016-09-22 Qualcomm Technologies International, Ltd. Structure for multi-microphone speech einhancement system
US20160295279A1 (en) * 2015-04-03 2016-10-06 The Nielsen Company (Us), Llc Methods and apparatus to determine a state of a media presentation device
CN106233751A (zh) * 2014-04-14 2016-12-14 雅马哈株式会社 声音发射和采集装置及声音发射和采集方法

Family Cites Families (972)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1535408A (en) 1923-03-31 1925-04-28 Charles F Fricke Display device
US1540788A (en) 1924-10-24 1925-06-09 Mcclure Edward Border frame for open-metal-work panels and the like
US1965830A (en) 1933-03-18 1934-07-10 Reginald B Hammer Acoustic device
US2113219A (en) 1934-05-31 1938-04-05 Rca Corp Microphone
US2075588A (en) 1936-06-22 1937-03-30 James V Lewis Mirror and picture frame
US2233412A (en) 1937-07-03 1941-03-04 Willis C Hill Metallic window screen
US2164655A (en) 1937-10-28 1939-07-04 Bertel J Kleerup Stereopticon slide and method and means for producing same
US2268529A (en) 1938-11-21 1941-12-30 Alfred H Stiles Picture mounting means
US2343037A (en) 1941-02-27 1944-02-29 William I Adelman Frame
US2377449A (en) 1943-02-02 1945-06-05 Joseph M Prevette Combination screen and storm door and window
US2539671A (en) 1946-02-28 1951-01-30 Rca Corp Directional microphone
US2521603A (en) 1947-03-26 1950-09-05 Pru Lesco Inc Picture frame securing means
US2481250A (en) 1948-05-20 1949-09-06 Gen Motors Corp Engine starting apparatus
US2533565A (en) 1948-07-03 1950-12-12 John M Eichelman Display device having removable nonrigid panel
US2828508A (en) 1954-02-01 1958-04-01 Specialites Alimentaires Bourg Machine for injection-moulding of plastic articles
US2777232A (en) 1954-11-10 1957-01-15 Robert M Kulicke Picture frame
US2912605A (en) 1955-12-05 1959-11-10 Tibbetts Lab Inc Electromechanical transducer
US2938113A (en) 1956-03-17 1960-05-24 Schneil Heinrich Radio receiving set and housing therefor
US2840181A (en) 1956-08-07 1958-06-24 Benjamin H Wildman Loudspeaker cabinet
US2882633A (en) 1957-07-26 1959-04-21 Arlington Aluminum Co Poster holder
US2950556A (en) 1958-11-19 1960-08-30 William E Ford Foldable frame
US3019854A (en) 1959-10-12 1962-02-06 Waitus A O'bryant Filter for heating and air conditioning ducts
US3132713A (en) 1961-05-25 1964-05-12 Shure Bros Microphone diaphragm
US3240883A (en) 1961-05-25 1966-03-15 Shure Bros Microphone
US3143182A (en) 1961-07-17 1964-08-04 E J Mosher Sound reproducers
US3160225A (en) 1962-04-18 1964-12-08 Edward L Sechrist Sound reproduction system
US3161975A (en) 1962-11-08 1964-12-22 John L Mcmillan Picture frame
US3205601A (en) 1963-06-11 1965-09-14 Gawne Daniel Display holder
US3239973A (en) 1964-01-24 1966-03-15 Johns Manville Acoustical glass fiber panel with diaphragm action and controlled flow resistance
US3906431A (en) 1965-04-09 1975-09-16 Us Navy Search and track sonar system
US3310901A (en) 1965-06-15 1967-03-28 Sarkisian Robert Display holder
US3321170A (en) 1965-09-21 1967-05-23 Earl F Vye Magnetic adjustable pole piece strip heater clamp
US3509290A (en) 1966-05-03 1970-04-28 Nippon Musical Instruments Mfg Flat-plate type loudspeaker with frame mounted drivers
DE1772445A1 (de) 1968-05-16 1971-03-04 Niezoldi & Kraemer Gmbh Kamera mit eingebauten,in den Strahlengang des Aufnahmelichts bewegbaren Farbfiltern
US3573399A (en) 1968-08-14 1971-04-06 Bell Telephone Labor Inc Directional microphone
AT284927B (de) 1969-03-04 1970-10-12 Eumig Rohrrichtmikrophon
JPS5028944B1 (zh) 1970-12-04 1975-09-19
US3857191A (en) 1971-02-08 1974-12-31 Talkies Usa Inc Visual-audio device
US3696885A (en) 1971-08-19 1972-10-10 Electronic Res Ass Decorative loudspeakers
US3755625A (en) 1971-10-12 1973-08-28 Bell Telephone Labor Inc Multimicrophone loudspeaking telephone system
US3936606A (en) 1971-12-07 1976-02-03 Wanke Ronald L Acoustic abatement method and apparatus
JPS4867579A (zh) 1971-12-23 1973-09-14
US3828508A (en) 1972-07-31 1974-08-13 W Moeller Tile device for joining permanent ceiling tile to removable ceiling tile
US3895194A (en) 1973-05-29 1975-07-15 Thermo Electron Corp Directional condenser electret microphone
US3855457A (en) 1973-06-18 1974-12-17 Ibm Machine for processing merchandising tickets in both roll and individual form
US3938617A (en) 1974-01-17 1976-02-17 Fort Enterprises, Limited Speaker enclosure
JPS5215972B2 (zh) 1974-02-28 1977-05-06
US4029170A (en) 1974-09-06 1977-06-14 B & P Enterprises, Inc. Radial sound port speaker
US3941638A (en) 1974-09-18 1976-03-02 Reginald Patrick Horky Manufactured relief-sculptured sound grills (used for covering the sound producing side and/or front of most manufactured sound speaker enclosures) and the manufacturing process for the said grills
US4212133A (en) 1975-03-14 1980-07-15 Lufkin Lindsey D Picture frame vase
US3992584A (en) 1975-05-09 1976-11-16 Dugan Daniel W Automatic microphone mixer
JPS51137507A (en) 1975-05-21 1976-11-27 Asano Tetsukoujiyo Kk Printing machine
US4007461A (en) 1975-09-05 1977-02-08 Field Operations Bureau Of The Federal Communications Commission Antenna system for deriving cardiod patterns
US4070547A (en) 1976-01-08 1978-01-24 Superscope, Inc. One-point stereo microphone
US4072821A (en) 1976-05-10 1978-02-07 Cbs Inc. Microphone system for producing signals for quadraphonic reproduction
US4032725A (en) 1976-09-07 1977-06-28 Motorola, Inc. Speaker mounting
US4096353A (en) 1976-11-02 1978-06-20 Cbs Inc. Microphone system for producing signals for quadraphonic reproduction
US4169219A (en) 1977-03-30 1979-09-25 Beard Terry D Compander noise reduction method and apparatus
FR2390864A1 (fr) 1977-05-09 1978-12-08 France Etat Systeme d'audioconference par liaison telephonique
IE47296B1 (en) 1977-11-03 1984-02-08 Post Office Improvements in or relating to audio teleconferencing
USD255234S (en) 1977-11-22 1980-06-03 Ronald Wellward Ceiling speaker
US4131760A (en) 1977-12-07 1978-12-26 Bell Telephone Laboratories, Incorporated Multiple microphone dereverberation system
US4127156A (en) 1978-01-03 1978-11-28 Brandt James R Burglar-proof screening
USD256015S (en) 1978-03-20 1980-07-22 Epicure Products, Inc. Loudspeaker mounting bracket
DE2821294B2 (de) 1978-05-16 1980-03-13 Deutsche Texaco Ag, 2000 Hamburg Phenolaldehydharz, Verfahren zu seiner Herstellung und seine Verwendung
JPS54157617A (en) 1978-05-31 1979-12-12 Kyowa Electric & Chemical Method of manufacturing cloth coated speaker box and material therefor
US4305141A (en) 1978-06-09 1981-12-08 The Stoneleigh Trust Low-frequency directional sonar systems
US4198705A (en) 1978-06-09 1980-04-15 The Stoneleigh Trust, Donald P. Massa and Fred M. Dellorfano, Trustees Directional energy receiving systems for use in the automatic indication of the direction of arrival of the received signal
US4334740A (en) 1978-09-12 1982-06-15 Polaroid Corporation Receiving system having pre-selected directional response
JPS5546033A (en) 1978-09-27 1980-03-31 Nissan Motor Co Ltd Electronic control fuel injection system
JPS5910119B2 (ja) 1979-04-26 1984-03-07 日本ビクター株式会社 可変指向性マイクロホン
US4254417A (en) 1979-08-20 1981-03-03 The United States Of America As Represented By The Secretary Of The Navy Beamformer for arrays with rotational symmetry
DE2941485A1 (de) 1979-10-10 1981-04-23 Hans-Josef 4300 Essen Hasenäcker Hoererlose fernsprechzelle
SE418665B (sv) 1979-10-16 1981-06-15 Gustav Georg Arne Bolin Sett att forbettra akustiken i en lokal
US4311874A (en) 1979-12-17 1982-01-19 Bell Telephone Laboratories, Incorporated Teleconference microphone arrays
US4330691A (en) 1980-01-31 1982-05-18 The Futures Group, Inc. Integral ceiling tile-loudspeaker system
US4296280A (en) 1980-03-17 1981-10-20 Richie Ronald A Wall mounted speaker system
JPS5710598A (en) 1980-06-20 1982-01-20 Sony Corp Transmitting circuit of microphone output
US4373191A (en) 1980-11-10 1983-02-08 Motorola Inc. Absolute magnitude difference function generator for an LPC system
US4393631A (en) 1980-12-03 1983-07-19 Krent Edward D Three-dimensional acoustic ceiling tile system for dispersing long wave sound
US4365449A (en) 1980-12-31 1982-12-28 James P. Liautaud Honeycomb framework system for drop ceilings
AT371969B (de) 1981-11-19 1983-08-25 Akg Akustische Kino Geraete Mikrophon zur stereophonischen aufnahme akustischer ereignisse
US4436966A (en) 1982-03-15 1984-03-13 Darome, Inc. Conference microphone unit
US4429850A (en) 1982-03-25 1984-02-07 Uniweb, Inc. Display panel shelf bracket
US4449238A (en) 1982-03-25 1984-05-15 Bell Telephone Laboratories, Incorporated Voice-actuated switching system
DE3331440A1 (de) 1982-09-01 1984-03-01 Victor Company Of Japan, Ltd., Yokohama, Kanagawa Phasensteueranordnungs-schallaufnahmeeinrichtung ohne unerwuenschte empfangschrakteristiken
US4489442A (en) 1982-09-30 1984-12-18 Shure Brothers, Inc. Sound actuated microphone system
US4485484A (en) 1982-10-28 1984-11-27 At&T Bell Laboratories Directable microphone system
US4518826A (en) 1982-12-22 1985-05-21 Mountain Systems, Inc. Vandal-proof communication system
FR2542549B1 (fr) 1983-03-09 1987-09-04 Lemaitre Guy Diffuseur acoustique en angle plan
US4669108A (en) 1983-05-23 1987-05-26 Teleconferencing Systems International Inc. Wireless hands-free conference telephone system
USD285067S (en) 1983-07-18 1986-08-12 Pascal Delbuck Loudspeaker
CA1202713A (en) 1984-03-16 1986-04-01 Beverley W. Gumb Transmitter assembly for a telephone handset
US4712231A (en) 1984-04-06 1987-12-08 Shure Brothers, Inc. Teleconference system
US4696043A (en) 1984-08-24 1987-09-22 Victor Company Of Japan, Ltd. Microphone apparatus having a variable directivity pattern
US4675906A (en) 1984-12-20 1987-06-23 At&T Company, At&T Bell Laboratories Second order toroidal microphone
US4658425A (en) 1985-04-19 1987-04-14 Shure Brothers, Inc. Microphone actuation control system suitable for teleconference systems
CA1268546A (en) 1985-08-30 1990-05-01 Shigenobu Minami Stereophonic voice signal transmission system
CA1236607A (en) 1985-09-23 1988-05-10 Northern Telecom Limited Microphone arrangement
US4625827A (en) 1985-10-16 1986-12-02 Crown International, Inc. Microphone windscreen
US4653102A (en) 1985-11-05 1987-03-24 Position Orientation Systems Directional microphone system
US4693174A (en) 1986-05-09 1987-09-15 Anderson Philip K Air deflecting means for use with air outlets defined in dropped ceiling constructions
US4860366A (en) 1986-07-31 1989-08-22 Nec Corporation Teleconference system using expanders for emphasizing a desired signal with respect to undesired signals
US4741038A (en) 1986-09-26 1988-04-26 American Telephone And Telegraph Company, At&T Bell Laboratories Sound location arrangement
JPH0657079B2 (ja) 1986-12-08 1994-07-27 日本電信電話株式会社 複数対のマイクロホン出力の位相切替収音装置
US4862507A (en) 1987-01-16 1989-08-29 Shure Brothers, Inc. Microphone acoustical polar pattern converter
NL8701633A (nl) 1987-07-10 1989-02-01 Philips Nv Digitale echocompensator.
US4805730A (en) 1988-01-11 1989-02-21 Peavey Electronics Corporation Loudspeaker enclosure
US4866868A (en) 1988-02-24 1989-09-19 Ntg Industries, Inc. Display device
JPH01260967A (ja) 1988-04-11 1989-10-18 Nec Corp 多チヤネル信号用音声会議装置
US4969197A (en) 1988-06-10 1990-11-06 Murata Manufacturing Piezoelectric speaker
JP2748417B2 (ja) 1988-07-30 1998-05-06 ソニー株式会社 マイクロホン装置
US4881135A (en) 1988-09-23 1989-11-14 Heilweil Jordan B Concealed audio-video apparatus for recording conferences and meetings
US4928312A (en) 1988-10-17 1990-05-22 Amel Hill Acoustic transducer
US4888807A (en) 1989-01-18 1989-12-19 Audio-Technica U.S., Inc. Variable pattern microphone system
JPH0728470B2 (ja) 1989-02-03 1995-03-29 松下電器産業株式会社 アレイマイクロホン
USD329239S (en) 1989-06-26 1992-09-08 PRS, Inc. Recessed speaker grill
US4923032A (en) 1989-07-21 1990-05-08 Nuernberger Mark A Ceiling panel sound system
US5000286A (en) 1989-08-15 1991-03-19 Klipsch And Associates, Inc. Modular loudspeaker system
USD324780S (en) 1989-09-27 1992-03-24 Sebesta Walter C Combined picture frame and golf ball rack
US5121426A (en) 1989-12-22 1992-06-09 At&T Bell Laboratories Loudspeaking telephone station including directional microphone
US5038935A (en) 1990-02-21 1991-08-13 Uniek Plastics, Inc. Storage and display unit for photographic prints
US5088574A (en) 1990-04-16 1992-02-18 Kertesz Iii Emery Ceiling speaker system
AT407815B (de) 1990-07-13 2001-06-25 Viennatone Gmbh Hörgerät
US5550925A (en) 1991-01-07 1996-08-27 Canon Kabushiki Kaisha Sound processing device
JP2792252B2 (ja) 1991-03-14 1998-09-03 日本電気株式会社 多チャンネルエコー除去方法および装置
US5204907A (en) 1991-05-28 1993-04-20 Motorola, Inc. Noise cancelling microphone and boot mounting arrangement
US5353279A (en) 1991-08-29 1994-10-04 Nec Corporation Echo canceler
USD345346S (en) 1991-10-18 1994-03-22 International Business Machines Corp. Pen-based computer
US5189701A (en) 1991-10-25 1993-02-23 Micom Communications Corp. Voice coder/decoder and methods of coding/decoding
USD340718S (en) 1991-12-20 1993-10-26 Square D Company Speaker frame assembly
US5289544A (en) 1991-12-31 1994-02-22 Audiological Engineering Corporation Method and apparatus for reducing background noise in communication systems and for enhancing binaural hearing systems for the hearing impaired
US5322979A (en) 1992-01-08 1994-06-21 Cassity Terry A Speaker cover assembly
JP2792311B2 (ja) 1992-01-31 1998-09-03 日本電気株式会社 多チャンネルエコー除去方法および装置
JPH05260589A (ja) 1992-03-10 1993-10-08 Nippon Hoso Kyokai <Nhk> 焦点収音方法
US5297210A (en) 1992-04-10 1994-03-22 Shure Brothers, Incorporated Microphone actuation control system
USD345379S (en) 1992-07-06 1994-03-22 Canadian Moulded Products Inc. Card holder
US5383293A (en) 1992-08-27 1995-01-24 Royal; John D. Picture frame arrangement
JPH06104970A (ja) 1992-09-18 1994-04-15 Fujitsu Ltd 拡声電話機
US5307405A (en) 1992-09-25 1994-04-26 Qualcomm Incorporated Network echo canceller
US5400413A (en) 1992-10-09 1995-03-21 Dana Innovations Pre-formed speaker grille cloth
IT1257164B (it) 1992-10-23 1996-01-05 Ist Trentino Di Cultura Procedimento per la localizzazione di un parlatore e l'acquisizione diun messaggio vocale, e relativo sistema.
JP2508574B2 (ja) 1992-11-10 1996-06-19 日本電気株式会社 多チャンネルエコ―除去装置
US5406638A (en) 1992-11-25 1995-04-11 Hirschhorn; Bruce D. Automated conference system
US5359374A (en) 1992-12-14 1994-10-25 Talking Frames Corp. Talking picture frames
US5335011A (en) 1993-01-12 1994-08-02 Bell Communications Research, Inc. Sound localization system for teleconferencing using self-steering microphone arrays
US5329593A (en) 1993-05-10 1994-07-12 Lazzeroni John J Noise cancelling microphone
US5555447A (en) 1993-05-14 1996-09-10 Motorola, Inc. Method and apparatus for mitigating speech loss in a communication system
JPH084243B2 (ja) 1993-05-31 1996-01-17 日本電気株式会社 多チャンネルエコー除去方法および装置
JP3626492B2 (ja) 1993-07-07 2005-03-09 ポリコム・インコーポレイテッド 会話の品質向上のための背景雑音の低減
US5657393A (en) 1993-07-30 1997-08-12 Crow; Robert P. Beamed linear array microphone system
DE4330243A1 (de) 1993-09-07 1995-03-09 Philips Patentverwaltung Sprachverarbeitungseinrichtung
US5525765A (en) 1993-09-08 1996-06-11 Wenger Corporation Acoustical virtual environment
US5664021A (en) 1993-10-05 1997-09-02 Picturetel Corporation Microphone system for teleconferencing system
US5473701A (en) 1993-11-05 1995-12-05 At&T Corp. Adaptive microphone array
USD363045S (en) 1994-03-29 1995-10-10 Phillips Verla D Wall plaque
JPH07336790A (ja) 1994-06-13 1995-12-22 Nec Corp マイクロホンシステム
US5509634A (en) 1994-09-28 1996-04-23 Femc Ltd. Self adjusting glass shelf label holder
JP3397269B2 (ja) 1994-10-26 2003-04-14 日本電信電話株式会社 多チャネル反響消去方法
NL9401860A (nl) 1994-11-08 1996-06-03 Duran Bv Luidsprekersysteem met bestuurde richtinggevoeligheid.
US5633936A (en) 1995-01-09 1997-05-27 Texas Instruments Incorporated Method and apparatus for detecting a near-end speech signal
US5645257A (en) 1995-03-31 1997-07-08 Metro Industries, Inc. Adjustable support apparatus
USD382118S (en) 1995-04-17 1997-08-12 Kimberly-Clark Tissue Company Paper towel
JP3403549B2 (ja) * 1995-05-29 2003-05-06 松下電器産業株式会社 エコーキャンセラ
US6731334B1 (en) 1995-07-31 2004-05-04 Forgent Networks, Inc. Automatic voice tracking camera system and method of operation
WO1997008896A1 (en) 1995-08-23 1997-03-06 Scientific-Atlanta, Inc. Open area security system
US6285770B1 (en) 1995-09-02 2001-09-04 New Transducers Limited Noticeboards incorporating loudspeakers
KR100443204B1 (ko) 1995-09-02 2004-10-26 뉴 트랜스듀서스 리미티드 관성진동트랜스듀서
US6215881B1 (en) 1995-09-02 2001-04-10 New Transducers Limited Ceiling tile loudspeaker
US6198831B1 (en) 1995-09-02 2001-03-06 New Transducers Limited Panel-form loudspeakers
EP0766446B1 (en) 1995-09-26 2003-06-11 Nippon Telegraph And Telephone Corporation Method and apparatus for multi-channel acoustic echo cancellation
US5766702A (en) 1995-10-05 1998-06-16 Lin; Chii-Hsiung Laminated ornamental glass
SE505150C3 (sv) * 1995-10-18 1997-08-04 Ericsson Telefon Ab L M Adaptivt ekoslaeckningsfoerfarande av dubbelfiltertyp
US5768263A (en) 1995-10-20 1998-06-16 Vtel Corporation Method for talk/listen determination and multipoint conferencing system using such method
US6125179A (en) 1995-12-13 2000-09-26 3Com Corporation Echo control device with quick response to sudden echo-path change
US6144746A (en) 1996-02-09 2000-11-07 New Transducers Limited Loudspeakers comprising panel-form acoustic radiating elements
US5888412A (en) 1996-03-04 1999-03-30 Motorola, Inc. Method for making a sculptured diaphragm
US5673327A (en) 1996-03-04 1997-09-30 Julstrom; Stephen D. Microphone mixer
US5706344A (en) 1996-03-29 1998-01-06 Digisonix, Inc. Acoustic echo cancellation in an integrated audio and telecommunication system
US5717171A (en) 1996-05-09 1998-02-10 The Solar Corporation Acoustical cabinet grille frame
US5848146A (en) 1996-05-10 1998-12-08 Rane Corporation Audio system for conferencing/presentation room
US6205224B1 (en) 1996-05-17 2001-03-20 The Boeing Company Circularly symmetric, zero redundancy, planar array having broad frequency range applications
US5715319A (en) 1996-05-30 1998-02-03 Picturetel Corporation Method and apparatus for steerable and endfire superdirective microphone arrays with reduced analog-to-digital converter and computational requirements
US5796819A (en) 1996-07-24 1998-08-18 Ericsson Inc. Echo canceller for non-linear circuits
KR100212314B1 (ko) 1996-11-06 1999-08-02 윤종용 액정 디스플레이 장치의 스탠드구조
US5888439A (en) 1996-11-14 1999-03-30 The Solar Corporation Method of molding an acoustical cabinet grille frame
JP3797751B2 (ja) 1996-11-27 2006-07-19 富士通株式会社 マイクロホンシステム
US6301357B1 (en) 1996-12-31 2001-10-09 Ericsson Inc. AC-center clipper for noise and echo suppression in a communications system
US5878147A (en) 1996-12-31 1999-03-02 Etymotic Research, Inc. Directional microphone assembly
US6151399A (en) 1996-12-31 2000-11-21 Etymotic Research, Inc. Directional microphone system providing for ease of assembly and disassembly
US6798890B2 (en) 2000-10-05 2004-09-28 Etymotic Research, Inc. Directional microphone assembly
US7881486B1 (en) 1996-12-31 2011-02-01 Etymotic Research, Inc. Directional microphone assembly
US5870482A (en) 1997-02-25 1999-02-09 Knowles Electronics, Inc. Miniature silicon condenser microphone
JP3175622B2 (ja) 1997-03-03 2001-06-11 ヤマハ株式会社 演奏音場制御装置
USD392977S (en) 1997-03-11 1998-03-31 LG Fosta Ltd. Speaker
US6041127A (en) 1997-04-03 2000-03-21 Lucent Technologies Inc. Steerable and variable first-order differential microphone array
WO1998047291A2 (en) 1997-04-16 1998-10-22 Isight Ltd. Video teleconferencing
FR2762467B1 (fr) 1997-04-16 1999-07-02 France Telecom Procede d'annulation d'echo acoustique multi-voies et annuleur d'echo acoustique multi-voies
US6633647B1 (en) 1997-06-30 2003-10-14 Hewlett-Packard Development Company, L.P. Method of custom designing directional responses for a microphone of a portable computer
USD394061S (en) 1997-07-01 1998-05-05 Windsor Industries, Inc. Combined computer-style radio and alarm clock
US6137887A (en) 1997-09-16 2000-10-24 Shure Incorporated Directional microphone system
NL1007321C2 (nl) 1997-10-20 1999-04-21 Univ Delft Tech Gehoorinrichting voor het verbeteren van de verstaanbaarheid voor slechthorenden.
US6563803B1 (en) 1997-11-26 2003-05-13 Qualcomm Incorporated Acoustic echo canceller
US6039457A (en) 1997-12-17 2000-03-21 Intex Exhibits International, L.L.C. Light bracket
US6393129B1 (en) 1998-01-07 2002-05-21 American Technology Corporation Paper structures for speaker transducers
US6505057B1 (en) 1998-01-23 2003-01-07 Digisonix Llc Integrated vehicle voice enhancement system and hands-free cellular telephone system
CA2320895A1 (en) 1998-02-20 1999-08-26 David Kenneth Memke Shelf-edge display system
US6895093B1 (en) 1998-03-03 2005-05-17 Texas Instruments Incorporated Acoustic echo-cancellation system
US6553122B1 (en) 1998-03-05 2003-04-22 Nippon Telegraph And Telephone Corporation Method and apparatus for multi-channel acoustic echo cancellation and recording medium with the method recorded thereon
DE69942944D1 (de) 1998-04-08 2010-12-30 British Telecomm Telekonferenzsystem
US6173059B1 (en) 1998-04-24 2001-01-09 Gentner Communications Corporation Teleconferencing system with visual feedback
EP0993674B1 (en) 1998-05-11 2006-08-16 Philips Electronics N.V. Pitch detection
US6442272B1 (en) 1998-05-26 2002-08-27 Tellabs, Inc. Voice conferencing system having local sound amplification
US6266427B1 (en) 1998-06-19 2001-07-24 Mcdonnell Douglas Corporation Damped structural panel and method of making same
USD416315S (en) 1998-09-01 1999-11-09 Fujitsu General Limited Air conditioner
USD424538S (en) 1998-09-14 2000-05-09 Fujitsu General Limited Display device
US6049607A (en) 1998-09-18 2000-04-11 Lamar Signal Processing Interference canceling method and apparatus
US6424635B1 (en) 1998-11-10 2002-07-23 Nortel Networks Limited Adaptive nonlinear processor for echo cancellation
US6526147B1 (en) 1998-11-12 2003-02-25 Gn Netcom A/S Microphone array with high directivity
US7068801B1 (en) 1998-12-18 2006-06-27 National Research Council Of Canada Microphone array diffracting structure
KR100298300B1 (ko) 1998-12-29 2002-05-01 강상훈 포만트유사도측정에의한피솔라를이용한음성파형부호화방식
US6507659B1 (en) 1999-01-25 2003-01-14 Cascade Audio, Inc. Microphone apparatus for producing signals for surround reproduction
US6035962A (en) 1999-02-24 2000-03-14 Lin; Chih-Hsiung Easily-combinable and movable speaker case
US7423983B1 (en) 1999-09-20 2008-09-09 Broadcom Corporation Voice and data exchange over a packet based network
US7558381B1 (en) 1999-04-22 2009-07-07 Agere Systems Inc. Retrieval of deleted voice messages in voice messaging system
JP3789685B2 (ja) 1999-07-02 2006-06-28 富士通株式会社 マイクロホンアレイ装置
US6889183B1 (en) 1999-07-15 2005-05-03 Nortel Networks Limited Apparatus and method of regenerating a lost audio segment
US20050286729A1 (en) 1999-07-23 2005-12-29 George Harwood Flat speaker with a flat membrane diaphragm
KR100638960B1 (ko) 1999-09-29 2006-10-25 1...리미티드 음향 지향 방법 및 장치
USD432518S (en) 1999-10-01 2000-10-24 Keiko Muto Audio system
US6868377B1 (en) 1999-11-23 2005-03-15 Creative Technology Ltd. Multiband phase-vocoder for the modification of audio or speech signals
US6704423B2 (en) 1999-12-29 2004-03-09 Etymotic Research, Inc. Hearing aid assembly having external directional microphone
US6449593B1 (en) 2000-01-13 2002-09-10 Nokia Mobile Phones Ltd. Method and system for tracking human speakers
US20020140633A1 (en) 2000-02-03 2002-10-03 Canesta, Inc. Method and system to present immersion virtual simulations using three-dimensional measurement
US6488367B1 (en) 2000-03-14 2002-12-03 Eastman Kodak Company Electroformed metal diaphragm
US6741720B1 (en) 2000-04-19 2004-05-25 Russound/Fmp, Inc. In-wall loudspeaker system
US6993126B1 (en) 2000-04-28 2006-01-31 Clearsonics Pty Ltd Apparatus and method for detecting far end speech
ATE370608T1 (de) 2000-05-26 2007-09-15 Koninkl Philips Electronics Nv Verfahren und gerät zur akustischen echounterdrückung mit adaptiver strahlbildung
US6944312B2 (en) 2000-06-15 2005-09-13 Valcom, Inc. Lay-in ceiling speaker
US6329908B1 (en) 2000-06-23 2001-12-11 Armstrong World Industries, Inc. Addressable speaker system
US6622030B1 (en) 2000-06-29 2003-09-16 Ericsson Inc. Echo suppression using adaptive gain based on residual echo energy
US8019091B2 (en) 2000-07-19 2011-09-13 Aliphcom, Inc. Voice activity detector (VAD) -based multiple-microphone acoustic noise suppression
USD453016S1 (en) 2000-07-20 2002-01-22 B & W Loudspeakers Limited Loudspeaker unit
US6386315B1 (en) 2000-07-28 2002-05-14 Awi Licensing Company Flat panel sound radiator and assembly system
US6481173B1 (en) 2000-08-17 2002-11-19 Awi Licensing Company Flat panel sound radiator with special edge details
US6510919B1 (en) 2000-08-30 2003-01-28 Awi Licensing Company Facing system for a flat panel radiator
DE60010457T2 (de) 2000-09-02 2006-03-02 Nokia Corp. Vorrichtung und Verfahren zur Verarbeitung eines Signales emittiert von einer Zielsignalquelle in einer geräuschvollen Umgebung
US6968064B1 (en) 2000-09-29 2005-11-22 Forgent Networks, Inc. Adaptive thresholds in acoustic echo canceller for use during double talk
GB2367730B (en) 2000-10-06 2005-04-27 Mitel Corp Method and apparatus for minimizing far-end speech effects in hands-free telephony systems using acoustic beamforming
US6963649B2 (en) 2000-10-24 2005-11-08 Adaptive Technologies, Inc. Noise cancelling microphone
EP1202602B1 (en) 2000-10-25 2013-05-15 Panasonic Corporation Zoom microphone device
US6704422B1 (en) 2000-10-26 2004-03-09 Widex A/S Method for controlling the directionality of the sound receiving characteristic of a hearing aid a hearing aid for carrying out the method
US6757393B1 (en) 2000-11-03 2004-06-29 Marie L. Spitzer Wall-hanging entertainment system
JP4110734B2 (ja) 2000-11-27 2008-07-02 沖電気工業株式会社 音声パケット通信の品質制御装置
US7092539B2 (en) 2000-11-28 2006-08-15 University Of Florida Research Foundation, Inc. MEMS based acoustic array
US7092882B2 (en) 2000-12-06 2006-08-15 Ncr Corporation Noise suppression in beam-steered microphone array
JP4734714B2 (ja) 2000-12-22 2011-07-27 ヤマハ株式会社 収音再生方法およびその装置
US6768795B2 (en) 2001-01-11 2004-07-27 Telefonaktiebolaget Lm Ericsson (Publ) Side-tone control within a telecommunication instrument
DE60142583D1 (de) 2001-01-23 2010-08-26 Koninkl Philips Electronics Nv Asymmetrisches mehrkanalfilter
USD480923S1 (en) 2001-02-20 2003-10-21 Dester.Acs Holding B.V. Tray
US20020126861A1 (en) 2001-03-12 2002-09-12 Chester Colby Audio expander
US20020131580A1 (en) 2001-03-16 2002-09-19 Shure Incorporated Solid angle cross-talk cancellation for beamforming arrays
GB2376595B (en) 2001-03-27 2003-12-24 1 Ltd Method and apparatus to create a sound field
JP3506138B2 (ja) 2001-07-11 2004-03-15 ヤマハ株式会社 複数チャンネルエコーキャンセル方法、複数チャンネル音声伝送方法、ステレオエコーキャンセラ、ステレオ音声伝送装置および伝達関数演算装置
JP2004537232A (ja) 2001-07-20 2004-12-09 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ 多数のマイクロフォンのエコーを抑圧する回路をポストプロセッサとして有する音響補強システム
JP2004537233A (ja) 2001-07-20 2004-12-09 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ エコー抑圧回路及びラウドスピーカ・ビームフォーマを有する音響補強システム
US7013267B1 (en) 2001-07-30 2006-03-14 Cisco Technology, Inc. Method and apparatus for reconstructing voice information
US7068796B2 (en) 2001-07-31 2006-06-27 Moorer James A Ultra-directional microphones
JP3727258B2 (ja) 2001-08-13 2005-12-14 富士通株式会社 エコー抑制処理システム
GB2379148A (en) 2001-08-21 2003-02-26 Mitel Knowledge Corp Voice activity detection
GB0121206D0 (en) 2001-08-31 2001-10-24 Mitel Knowledge Corp System and method of indicating and controlling sound pickup direction and location in a teleconferencing system
US7298856B2 (en) 2001-09-05 2007-11-20 Nippon Hoso Kyokai Chip microphone and method of making same
US20030059061A1 (en) 2001-09-14 2003-03-27 Sony Corporation Audio input unit, audio input method and audio input and output unit
JP2003087890A (ja) 2001-09-14 2003-03-20 Sony Corp 音声入力装置及び音声入力方法
USD469090S1 (en) 2001-09-17 2003-01-21 Sharp Kabushiki Kaisha Monitor for a computer
JP3568922B2 (ja) 2001-09-20 2004-09-22 三菱電機株式会社 エコー処理装置
US7065224B2 (en) 2001-09-28 2006-06-20 Sonionmicrotronic Nederland B.V. Microphone for a hearing aid or listening device with improved internal damping and foreign material protection
US7120269B2 (en) 2001-10-05 2006-10-10 Lowell Manufacturing Company Lay-in tile speaker system
US7239714B2 (en) 2001-10-09 2007-07-03 Sonion Nederland B.V. Microphone having a flexible printed circuit board for mounting components
GB0124352D0 (en) 2001-10-11 2001-11-28 1 Ltd Signal processing device for acoustic transducer array
JP4282260B2 (ja) 2001-11-20 2009-06-17 株式会社リコー エコーキャンセラ
WO2003047307A2 (en) 2001-11-27 2003-06-05 Corporation For National Research Initiatives A miniature condenser microphone and fabrication method therefor
US6665971B2 (en) 2001-11-27 2003-12-23 Fast Industries, Ltd. Label holder with dust cover
US20030107478A1 (en) 2001-12-06 2003-06-12 Hendricks Richard S. Architectural sound enhancement system
US7130430B2 (en) 2001-12-18 2006-10-31 Milsap Jeffrey P Phased array sound system
US6592237B1 (en) 2001-12-27 2003-07-15 John M. Pledger Panel frame to draw air around light fixtures
US20030122777A1 (en) 2001-12-31 2003-07-03 Grover Andrew S. Method and apparatus for configuring a computer system based on user distance
AU2003210624A1 (en) 2002-01-18 2003-07-30 Polycom, Inc. Digital linking of multiple microphone systems
US8098844B2 (en) 2002-02-05 2012-01-17 Mh Acoustics, Llc Dual-microphone spatial noise suppression
US7130309B2 (en) 2002-02-20 2006-10-31 Intel Corporation Communication device with dynamic delay compensation and method for communicating voice over a packet-switched network
DE10208465A1 (de) 2002-02-27 2003-09-18 Bsh Bosch Siemens Hausgeraete Elektrisches Gerät, insbesondere Dunstabzugshaube
US20030161485A1 (en) 2002-02-27 2003-08-28 Shure Incorporated Multiple beam automatic mixing microphone array processing via speech detection
US20030169888A1 (en) 2002-03-08 2003-09-11 Nikolas Subotic Frequency dependent acoustic beam forming and nulling
DK174558B1 (da) 2002-03-15 2003-06-02 Bruel & Kjaer Sound & Vibratio Stråleformende transducer-antennesystem
ITMI20020566A1 (it) 2002-03-18 2003-09-18 Daniele Ramenzoni Dispositivo per captare movimenti anche piccoli nell'aria e nei fluidi adatto per applicazioni cibernetiche e di laboratorio come trasduttor
US7245733B2 (en) 2002-03-20 2007-07-17 Siemens Hearing Instruments, Inc. Hearing instrument microphone arrangement with improved sensitivity
US7518737B2 (en) 2002-03-29 2009-04-14 Georgia Tech Research Corp. Displacement-measuring optical device with orifice
ITBS20020043U1 (it) 2002-04-12 2003-10-13 Flos Spa Giunto per il collegamento meccanico e elettrico di apparecchi di illuminazione in linea e/o ad angolo
US6912178B2 (en) 2002-04-15 2005-06-28 Polycom, Inc. System and method for computing a location of an acoustic source
US20030198339A1 (en) 2002-04-19 2003-10-23 Roy Kenneth P. Enhanced sound processing system for use with sound radiators
US20030202107A1 (en) 2002-04-30 2003-10-30 Slattery E. Michael Automated camera view control system
US7388954B2 (en) 2002-06-24 2008-06-17 Freescale Semiconductor, Inc. Method and apparatus for tone indication
US7852369B2 (en) 2002-06-27 2010-12-14 Microsoft Corp. Integrated design for omni-directional camera and microphone array
US6882971B2 (en) 2002-07-18 2005-04-19 General Instrument Corporation Method and apparatus for improving listener differentiation of talkers during a conference call
GB2393601B (en) 2002-07-19 2005-09-21 1 Ltd Digital loudspeaker system
US8947347B2 (en) 2003-08-27 2015-02-03 Sony Computer Entertainment Inc. Controlling actions in a video game unit
US7050576B2 (en) 2002-08-20 2006-05-23 Texas Instruments Incorporated Double talk, NLP and comfort noise
AU2003253152A1 (en) 2002-09-17 2004-04-08 Koninklijke Philips Electronics N.V. A method of synthesizing of an unvoiced speech signal
WO2004032568A1 (en) 2002-10-01 2004-04-15 Donnelly Corporation Microphone system for vehicle
US7106876B2 (en) 2002-10-15 2006-09-12 Shure Incorporated Microphone for simultaneous noise sensing and speech pickup
US20080056517A1 (en) 2002-10-18 2008-03-06 The Regents Of The University Of California Dynamic binaural sound capture and reproduction in focued or frontal applications
US7003099B1 (en) 2002-11-15 2006-02-21 Fortmedia, Inc. Small array microphone for acoustic echo cancellation and noise suppression
US7672445B1 (en) 2002-11-15 2010-03-02 Fortemedia, Inc. Method and system for nonlinear echo suppression
GB2395878A (en) 2002-11-29 2004-06-02 Mitel Knowledge Corp Method of capturing constant echo path information using default coefficients
US6990193B2 (en) 2002-11-29 2006-01-24 Mitel Knowledge Corporation Method of acoustic echo cancellation in full-duplex hands free audio conferencing with spatial directivity
US7359504B1 (en) 2002-12-03 2008-04-15 Plantronics, Inc. Method and apparatus for reducing echo and noise
GB0229059D0 (en) 2002-12-12 2003-01-15 Mitel Knowledge Corp Method of broadband constant directivity beamforming for non linear and non axi-symmetric sensor arrays embedded in an obstacle
US7333476B2 (en) 2002-12-23 2008-02-19 Broadcom Corporation System and method for operating a packet voice far-end echo cancellation system
KR100480789B1 (ko) 2003-01-17 2005-04-06 삼성전자주식회사 피드백 구조를 이용한 적응적 빔 형성방법 및 장치
GB2397990A (en) 2003-01-31 2004-08-04 Mitel Networks Corp Echo cancellation/suppression and double-talk detection in communication paths
USD489707S1 (en) 2003-02-17 2004-05-11 Pioneer Corporation Speaker
GB0304126D0 (en) 2003-02-24 2003-03-26 1 Ltd Sound beam loudspeaker system
KR100493172B1 (ko) 2003-03-06 2005-06-02 삼성전자주식회사 마이크로폰 어레이 구조, 이를 이용한 일정한 지향성을갖는 빔 형성방법 및 장치와 음원방향 추정방법 및 장치
US20040240664A1 (en) 2003-03-07 2004-12-02 Freed Evan Lawrence Full-duplex speakerphone
US7466835B2 (en) 2003-03-18 2008-12-16 Sonion A/S Miniature microphone with balanced termination
US9099094B2 (en) 2003-03-27 2015-08-04 Aliphcom Microphone array with rear venting
US6988064B2 (en) 2003-03-31 2006-01-17 Motorola, Inc. System and method for combined frequency-domain and time-domain pitch extraction for speech signals
US7643641B2 (en) 2003-05-09 2010-01-05 Nuance Communications, Inc. System for communication enhancement in a noisy environment
US8724822B2 (en) 2003-05-09 2014-05-13 Nuance Communications, Inc. Noisy environment communication enhancement system
ATE420539T1 (de) 2003-05-13 2009-01-15 Harman Becker Automotive Sys Verfahren und system zur adaptiven kompensation von mikrofonungleichheiten
JP2004349806A (ja) 2003-05-20 2004-12-09 Nippon Telegr & Teleph Corp <Ntt> 多チャネル音響エコー消去方法、その装置、そのプログラム及びその記録媒体
US6993145B2 (en) 2003-06-26 2006-01-31 Multi-Service Corporation Speaker grille frame
US20050005494A1 (en) 2003-07-11 2005-01-13 Way Franklin B. Combination display frame
GB0317158D0 (en) 2003-07-23 2003-08-27 Mitel Networks Corp A method to reduce acoustic coupling in audio conferencing systems
US8244536B2 (en) 2003-08-27 2012-08-14 General Motors Llc Algorithm for intelligent speech recognition
US7412376B2 (en) 2003-09-10 2008-08-12 Microsoft Corporation System and method for real-time detection and preservation of speech onset in a signal
CA2452945C (en) 2003-09-23 2016-05-10 Mcmaster University Binaural adaptive hearing system
US7162041B2 (en) 2003-09-30 2007-01-09 Etymotic Research, Inc. Noise canceling microphone with acoustically tuned ports
US20050213747A1 (en) 2003-10-07 2005-09-29 Vtel Products, Inc. Hybrid monaural and multichannel audio for conferencing
USD510729S1 (en) 2003-10-23 2005-10-18 Benq Corporation TV tuner box
US7190775B2 (en) 2003-10-29 2007-03-13 Broadcom Corporation High quality audio conferencing with adaptive beamforming
US8270585B2 (en) 2003-11-04 2012-09-18 Stmicroelectronics, Inc. System and method for an endpoint participating in and managing multipoint audio conferencing in a packet network
EP1695590B1 (en) 2003-12-01 2014-02-26 Wolfson Dynamic Hearing Pty Ltd. Method and apparatus for producing adaptive directional signals
JP2007514358A (ja) 2003-12-10 2007-05-31 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 個別の更新制御機構を備えた適応フィルタの直列構成を有するエコーキャンセラ
US7778425B2 (en) 2003-12-24 2010-08-17 Nokia Corporation Method for generating noise references for generalized sidelobe canceling
KR101086398B1 (ko) 2003-12-24 2011-11-25 삼성전자주식회사 다수의 마이크로폰을 이용한 지향성 제어 가능 스피커시스템 및 그 방법
JP4251077B2 (ja) 2004-01-07 2009-04-08 ヤマハ株式会社 スピーカ装置
US20070165871A1 (en) 2004-01-07 2007-07-19 Koninklijke Philips Electronic, N.V. Audio system having reverberation reducing filter
US7387151B1 (en) 2004-01-23 2008-06-17 Payne Donald L Cabinet door with changeable decorative panel
DK176894B1 (da) 2004-01-29 2010-03-08 Dpa Microphones As Mikrofonstruktur med retningsvirkning
TWI289020B (en) 2004-02-06 2007-10-21 Fortemedia Inc Apparatus and method of a dual microphone communication device applied for teleconference system
US7515721B2 (en) 2004-02-09 2009-04-07 Microsoft Corporation Self-descriptive microphone array
US7503616B2 (en) 2004-02-27 2009-03-17 Daimler Ag Motor vehicle having a microphone
KR101079066B1 (ko) 2004-03-01 2011-11-02 돌비 레버러토리즈 라이쎈싱 코오포레이션 멀티채널 오디오 코딩
US7415117B2 (en) 2004-03-02 2008-08-19 Microsoft Corporation System and method for beamforming using a microphone array
US7826205B2 (en) 2004-03-08 2010-11-02 Originatic Llc Electronic device having a movable input assembly with multiple input sides
USD504889S1 (en) 2004-03-17 2005-05-10 Apple Computer, Inc. Electronic device
US7346315B2 (en) 2004-03-30 2008-03-18 Motorola Inc Handheld device loudspeaker system
JP2005311988A (ja) 2004-04-26 2005-11-04 Onkyo Corp スピーカーシステム
WO2005125267A2 (en) 2004-05-05 2005-12-29 Southwest Research Institute Airborne collection of acoustic data using an unmanned aerial vehicle
JP2005323084A (ja) 2004-05-07 2005-11-17 Nippon Telegr & Teleph Corp <Ntt> 音響エコー消去方法、音響エコー消去装置、音響エコー消去プログラム
US8031853B2 (en) 2004-06-02 2011-10-04 Clearone Communications, Inc. Multi-pod conference systems
US7856097B2 (en) 2004-06-17 2010-12-21 Panasonic Corporation Echo canceling apparatus, telephone set using the same, and echo canceling method
US7352858B2 (en) 2004-06-30 2008-04-01 Microsoft Corporation Multi-channel echo cancellation with round robin regularization
TWI241790B (en) 2004-07-16 2005-10-11 Ind Tech Res Inst Hybrid beamforming apparatus and method for the same
DE602004017603D1 (de) 2004-09-03 2008-12-18 Harman Becker Automotive Sys Sprachsignalverarbeitung für die gemeinsame adaptive Reduktion von Störgeräuschen und von akustischen Echos
US20070230712A1 (en) 2004-09-07 2007-10-04 Koninklijke Philips Electronics, N.V. Telephony Device with Improved Noise Suppression
JP2006094389A (ja) 2004-09-27 2006-04-06 Yamaha Corp 車内会話補助装置
EP1643798B1 (en) 2004-10-01 2012-12-05 AKG Acoustics GmbH Microphone comprising two pressure-gradient capsules
US7760887B2 (en) 2004-10-15 2010-07-20 Lifesize Communications, Inc. Updating modeling information based on online data gathering
US8116500B2 (en) 2004-10-15 2012-02-14 Lifesize Communications, Inc. Microphone orientation and size in a speakerphone
US7667728B2 (en) 2004-10-15 2010-02-23 Lifesize Communications, Inc. Video and audio conferencing system with spatial audio
US7970151B2 (en) 2004-10-15 2011-06-28 Lifesize Communications, Inc. Hybrid beamforming
US7720232B2 (en) 2004-10-15 2010-05-18 Lifesize Communications, Inc. Speakerphone
USD526643S1 (en) 2004-10-19 2006-08-15 Pioneer Corporation Speaker
CN1780495A (zh) 2004-10-25 2006-05-31 宝利通公司 顶蓬麦克风组件
US7660428B2 (en) 2004-10-25 2010-02-09 Polycom, Inc. Ceiling microphone assembly
JP4697465B2 (ja) 2004-11-08 2011-06-08 日本電気株式会社 信号処理の方法、信号処理の装置および信号処理用プログラム
US20060109983A1 (en) 2004-11-19 2006-05-25 Young Randall K Signal masking and method thereof
JP2006173871A (ja) 2004-12-14 2006-06-29 Matsushita Electric Ind Co Ltd 音響エコーキャンセラとそれを用いたハンズフリー電話及び音響エコーキャンセル方法
US20060147063A1 (en) 2004-12-22 2006-07-06 Broadcom Corporation Echo cancellation in telephones with multiple microphones
USD526648S1 (en) 2004-12-23 2006-08-15 Apple Computer, Inc. Computing device
NO328256B1 (no) 2004-12-29 2010-01-18 Tandberg Telecom As Audiosystem
US7830862B2 (en) 2005-01-07 2010-11-09 At&T Intellectual Property Ii, L.P. System and method for modifying speech playout to compensate for transmission delay jitter in a voice over internet protocol (VoIP) network
KR20060081076A (ko) 2005-01-07 2006-07-12 이재호 음성인식으로 층수를 지정하는 엘리베이터
USD527372S1 (en) 2005-01-12 2006-08-29 Kh Technology Corporation Loudspeaker
EP1681670A1 (en) 2005-01-14 2006-07-19 Dialog Semiconductor GmbH Voice activation
JP4196956B2 (ja) 2005-02-28 2008-12-17 ヤマハ株式会社 拡声システム
JP4258472B2 (ja) 2005-01-27 2009-04-30 ヤマハ株式会社 拡声システム
JP4120646B2 (ja) 2005-01-27 2008-07-16 ヤマハ株式会社 拡声システム
US7995768B2 (en) 2005-01-27 2011-08-09 Yamaha Corporation Sound reinforcement system
EP1854332A2 (en) 2005-03-01 2007-11-14 Todd Henry Electromagnetic lever diaphragm audio transducer
US8406435B2 (en) 2005-03-18 2013-03-26 Microsoft Corporation Audio submix management
US7522742B2 (en) 2005-03-21 2009-04-21 Speakercraft, Inc. Speaker assembly with moveable baffle
US20060222187A1 (en) 2005-04-01 2006-10-05 Scott Jarrett Microphone and sound image processing system
EP1708472B1 (en) 2005-04-01 2007-12-05 Mitel Networks Corporation A method of accelerating the training of an acoustic echo canceller in a full-duplex beamforming-based audio conferencing system
USD542543S1 (en) 2005-04-06 2007-05-15 Foremost Group Inc. Mirror
CA2505496A1 (en) 2005-04-27 2006-10-27 Universite De Sherbrooke Robust localization and tracking of simultaneously moving sound sources using beamforming and particle filtering
US7991167B2 (en) 2005-04-29 2011-08-02 Lifesize Communications, Inc. Forming beams with nulls directed at noise sources
JP4886770B2 (ja) 2005-05-05 2012-02-29 株式会社ソニー・コンピュータエンタテインメント コンピュータ対話型処理と共に使用する選択的音源聴音
EP1722545B1 (en) 2005-05-09 2008-08-13 Mitel Networks Corporation A method and a system to reduce training time of an acoustic echo canceller in a full-duplex beamforming-based audio conferencing system
GB2426168B (en) 2005-05-09 2008-08-27 Sony Comp Entertainment Europe Audio processing
JP4654777B2 (ja) 2005-06-03 2011-03-23 パナソニック株式会社 音響エコーキャンセル装置
JP4735956B2 (ja) 2005-06-22 2011-07-27 アイシン・エィ・ダブリュ株式会社 複数ボルト挿入工具
ATE545286T1 (de) 2005-06-23 2012-02-15 Akg Acoustics Gmbh Schallfeldmikrophon
US8139782B2 (en) 2005-06-23 2012-03-20 Paul Hughes Modular amplification system
DE602005003342T2 (de) 2005-06-23 2008-09-11 Akg Acoustics Gmbh Methode zur Modellierung eines Mikrofons
JP4760160B2 (ja) 2005-06-29 2011-08-31 ヤマハ株式会社 集音装置
USD549673S1 (en) 2005-06-29 2007-08-28 Sony Corporation Television receiver
JP2007019907A (ja) 2005-07-08 2007-01-25 Yamaha Corp 音声伝達システム、および通信会議装置
WO2007013180A1 (ja) 2005-07-27 2007-02-01 Kabushiki Kaisha Audio-Technica 会議用音声システム
CN101238511B (zh) 2005-08-11 2011-09-07 旭化成株式会社 声源分离装置、音频识别装置、移动电话机、声源分离方法
US7702116B2 (en) 2005-08-22 2010-04-20 Stone Christopher L Microphone bleed simulator
JP4752403B2 (ja) 2005-09-06 2011-08-17 ヤマハ株式会社 拡声システム
JP4724505B2 (ja) 2005-09-09 2011-07-13 株式会社日立製作所 超音波探触子およびその製造方法
US20080253589A1 (en) 2005-09-21 2008-10-16 Koninklijke Philips Electronics N.V. Ultrasound Imaging System with Voice Activated Controls Using Remotely Positioned Microphone
JP2007089058A (ja) 2005-09-26 2007-04-05 Yamaha Corp マイクアレイ制御装置
US7565949B2 (en) 2005-09-27 2009-07-28 Casio Computer Co., Ltd. Flat panel display module having speaker function
WO2007037700A1 (en) 2005-09-30 2007-04-05 Squarehead Technology As Directional audio capturing
USD546318S1 (en) 2005-10-07 2007-07-10 Koninklijke Philips Electronics N.V. Subwoofer for home theatre system
EP1775989B1 (en) 2005-10-12 2008-12-10 Yamaha Corporation Speaker array and microphone array
US20070174047A1 (en) 2005-10-18 2007-07-26 Anderson Kyle D Method and apparatus for resynchronizing packetized audio streams
US7970123B2 (en) 2005-10-20 2011-06-28 Mitel Networks Corporation Adaptive coupling equalization in beamforming-based communication systems
USD546814S1 (en) 2005-10-24 2007-07-17 Teac Corporation Guitar amplifier with digital audio disc player
JPWO2007049556A1 (ja) 2005-10-26 2009-04-30 パナソニック株式会社 映像音声出力装置
CN101268715B (zh) 2005-11-02 2012-04-18 雅马哈株式会社 电话会议装置
JP4867579B2 (ja) 2005-11-02 2012-02-01 ヤマハ株式会社 遠隔会議装置
EP1971183A1 (en) 2005-11-15 2008-09-17 Yamaha Corporation Teleconference device and sound emission/collection device
US20070120029A1 (en) 2005-11-29 2007-05-31 Rgb Systems, Inc. A Modular Wall Mounting Apparatus
USD552570S1 (en) 2005-11-30 2007-10-09 Sony Corporation Monitor television receiver
USD547748S1 (en) 2005-12-08 2007-07-31 Sony Corporation Speaker box
US8243951B2 (en) 2005-12-19 2012-08-14 Yamaha Corporation Sound emission and collection device
US8130977B2 (en) 2005-12-27 2012-03-06 Polycom, Inc. Cluster of first-order microphones and method of operation for stereo input of videoconferencing system
JP4929740B2 (ja) 2006-01-31 2012-05-09 ヤマハ株式会社 音声会議装置
US8644477B2 (en) 2006-01-31 2014-02-04 Shure Acquisition Holdings, Inc. Digital Microphone Automixer
USD581510S1 (en) 2006-02-10 2008-11-25 American Power Conversion Corporation Wiring closet ventilation unit
JP2007228070A (ja) 2006-02-21 2007-09-06 Yamaha Corp テレビ会議装置
JP4946090B2 (ja) 2006-02-21 2012-06-06 ヤマハ株式会社 収音放音一体型装置
US8730156B2 (en) 2010-03-05 2014-05-20 Sony Computer Entertainment America Llc Maintaining multiple views on a shared stable virtual space
EP1994788B1 (en) 2006-03-10 2014-05-07 MH Acoustics, LLC Noise-reducing directional microphone array
JP4779748B2 (ja) 2006-03-27 2011-09-28 株式会社デンソー 車両用音声入出力装置および音声入出力装置用プログラム
JP2007274131A (ja) 2006-03-30 2007-10-18 Yamaha Corp 拡声システム及び集音装置
JP2007274463A (ja) 2006-03-31 2007-10-18 Yamaha Corp 遠隔会議装置
US8670581B2 (en) 2006-04-14 2014-03-11 Murray R. Harman Electrostatic loudspeaker capable of dispersing sound both horizontally and vertically
EP1848243B1 (en) 2006-04-18 2009-02-18 Harman/Becker Automotive Systems GmbH Multi-channel echo compensation system and method
JP2007288679A (ja) 2006-04-19 2007-11-01 Yamaha Corp 放収音装置
JP4816221B2 (ja) 2006-04-21 2011-11-16 ヤマハ株式会社 収音装置および音声会議装置
US20070253561A1 (en) 2006-04-27 2007-11-01 Tsp Systems, Inc. Systems and methods for audio enhancement
US7831035B2 (en) 2006-04-28 2010-11-09 Microsoft Corporation Integration of a microphone array with acoustic echo cancellation and center clipping
DE602006007685D1 (de) 2006-05-10 2009-08-20 Harman Becker Automotive Sys Kompensation von Mehrkanalechos durch Dekorrelation
US8155331B2 (en) 2006-05-10 2012-04-10 Honda Motor Co., Ltd. Sound source tracking system, method and robot
US20070269066A1 (en) 2006-05-19 2007-11-22 Phonak Ag Method for manufacturing an audio signal
WO2006114015A2 (en) 2006-05-19 2006-11-02 Phonak Ag Method for manufacturing an audio signal
JP4747949B2 (ja) 2006-05-25 2011-08-17 ヤマハ株式会社 音声会議装置
US8275120B2 (en) 2006-05-30 2012-09-25 Microsoft Corp. Adaptive acoustic echo cancellation
JP2008005347A (ja) 2006-06-23 2008-01-10 Yamaha Corp 音声通信装置、および複合プラグ
USD559553S1 (en) 2006-06-23 2008-01-15 Electric Mirror, L.L.C. Backlit mirror with TV
JP2008005293A (ja) 2006-06-23 2008-01-10 Matsushita Electric Ind Co Ltd エコー抑圧装置
JP4984683B2 (ja) 2006-06-29 2012-07-25 ヤマハ株式会社 放収音装置
US8184801B1 (en) 2006-06-29 2012-05-22 Nokia Corporation Acoustic echo cancellation for time-varying microphone array beamsteering systems
US20080008339A1 (en) 2006-07-05 2008-01-10 Ryan James G Audio processing system and method
US8189765B2 (en) 2006-07-06 2012-05-29 Panasonic Corporation Multichannel echo canceller
KR100883652B1 (ko) 2006-08-03 2009-02-18 삼성전자주식회사 음성 구간 검출 방법 및 장치, 및 이를 이용한 음성 인식시스템
US8213634B1 (en) 2006-08-07 2012-07-03 Daniel Technology, Inc. Modular and scalable directional audio array with novel filtering
JP4887968B2 (ja) 2006-08-09 2012-02-29 ヤマハ株式会社 音声会議装置
US8280728B2 (en) 2006-08-11 2012-10-02 Broadcom Corporation Packet loss concealment for a sub-band predictive coder based on extrapolation of excitation waveform
US8346546B2 (en) 2006-08-15 2013-01-01 Broadcom Corporation Packet loss concealment based on forced waveform alignment after packet loss
RU2417391C2 (ru) 2006-08-24 2011-04-27 Сименс Энерджи Энд Отомейшн, Инк. Устройства, системы и способы конфигурирования программируемого логического контроллера
USD566685S1 (en) 2006-10-04 2008-04-15 Lightspeed Technologies, Inc. Combined wireless receiver, amplifier and speaker
GB0619825D0 (en) 2006-10-06 2006-11-15 Craven Peter G Microphone array
EP2389011B1 (en) 2006-10-16 2017-09-27 THX Ltd Audio and power distribution system
JP5028944B2 (ja) 2006-10-17 2012-09-19 ヤマハ株式会社 音声会議装置及び音声会議システム
US8103030B2 (en) 2006-10-23 2012-01-24 Siemens Audiologische Technik Gmbh Differential directional microphone system and hearing aid device with such a differential directional microphone system
JP4928922B2 (ja) 2006-12-01 2012-05-09 株式会社東芝 情報処理装置、およびプログラム
ATE522078T1 (de) 2006-12-18 2011-09-15 Harman Becker Automotive Sys Echokompensation mit geringer komplexität
CN101207468B (zh) 2006-12-19 2010-07-21 华为技术有限公司 丢帧隐藏方法、系统和装置
JP2008154056A (ja) 2006-12-19 2008-07-03 Yamaha Corp 音声会議装置および音声会議システム
CN101212828A (zh) 2006-12-27 2008-07-02 鸿富锦精密工业（深圳）有限公司 电子设备及其采用的声音模组
US7941677B2 (en) 2007-01-05 2011-05-10 Avaya Inc. Apparatus and methods for managing power distribution over Ethernet
KR101365988B1 (ko) 2007-01-05 2014-02-21 삼성전자주식회사 지향성 스피커 시스템의 자동 셋-업 방법 및 장치
WO2008091869A2 (en) 2007-01-22 2008-07-31 Bell Helicopter Textron, Inc. System and method for the interactive display of data in a motion capture environment
KR101297300B1 (ko) 2007-01-31 2013-08-16 삼성전자주식회사 스피커 어레이를 이용한 프론트 서라운드 재생 시스템 및그 신호 재생 방법
US20080188965A1 (en) 2007-02-06 2008-08-07 Rane Corporation Remote audio device network system and method
GB2446619A (en) 2007-02-16 2008-08-20 Audiogravity Holdings Ltd Reduction of wind noise in an omnidirectional microphone array
JP5139111B2 (ja) 2007-03-02 2013-02-06 本田技研工業株式会社 移動音源からの音の抽出方法および装置
EP1970894A1 (fr) 2007-03-12 2008-09-17 France Télécom Procédé et dispositif de modification d'un signal audio
US7651390B1 (en) 2007-03-12 2010-01-26 Profeta Jeffery L Ceiling vent air diverter
USD578509S1 (en) 2007-03-12 2008-10-14 The Professional Monitor Company Limited Audio speaker
US8654955B1 (en) 2007-03-14 2014-02-18 Clearone Communications, Inc. Portable conferencing device with videoconferencing option
US8005238B2 (en) 2007-03-22 2011-08-23 Microsoft Corporation Robust adaptive beamforming with enhanced noise suppression
US8098842B2 (en) 2007-03-29 2012-01-17 Microsoft Corp. Enhanced beamforming for arrays of directional microphones
USD587709S1 (en) 2007-04-06 2009-03-03 Sony Corporation Monitor display
JP5050616B2 (ja) 2007-04-06 2012-10-17 ヤマハ株式会社 放収音装置
US8155304B2 (en) 2007-04-10 2012-04-10 Microsoft Corporation Filter bank optimization for acoustic echo cancellation
JP2008263336A (ja) 2007-04-11 2008-10-30 Oki Electric Ind Co Ltd エコーキャンセラおよびその残留エコー抑制方法
EP1981170A1 (en) 2007-04-13 2008-10-15 Global IP Solutions (GIPS) AB Adaptive, scalable packet loss recovery
EP1983799B1 (en) 2007-04-17 2010-07-07 Harman Becker Automotive Systems GmbH Acoustic localization of a speaker
US20080259731A1 (en) 2007-04-17 2008-10-23 Happonen Aki P Methods and apparatuses for user controlled beamforming
ITTV20070070A1 (it) 2007-04-20 2008-10-21 Swing S R L Dispositivo trasduttore del suono.
US20080279400A1 (en) 2007-05-10 2008-11-13 Reuven Knoll System and method for capturing voice interactions in walk-in environments
JP2008288785A (ja) 2007-05-16 2008-11-27 Yamaha Corp テレビ会議装置
EP1995940B1 (en) 2007-05-22 2011-09-07 Harman Becker Automotive Systems GmbH Method and apparatus for processing at least two microphone signals to provide an output signal with reduced interference
US8229134B2 (en) 2007-05-24 2012-07-24 University Of Maryland Audio camera using microphone arrays for real time capture of audio images and method for jointly processing the audio images with video images
JP5338040B2 (ja) 2007-06-04 2013-11-13 ヤマハ株式会社 音声会議装置
CN101833954B (zh) 2007-06-14 2012-07-11 华为终端有限公司 一种实现丢包隐藏的方法和装置
JP2008312002A (ja) 2007-06-15 2008-12-25 Yamaha Corp テレビ会議装置
EP2171714B1 (en) 2007-06-21 2012-08-15 Koninklijke Philips Electronics N.V. A device for and a method of processing audio signals
US20090003586A1 (en) 2007-06-28 2009-01-01 Fortemedia, Inc. Signal processor and method for canceling echo in a communication device
EP2168396B1 (en) 2007-07-09 2019-01-16 MH Acoustics, LLC Augmented elliptical microphone array
US8285554B2 (en) 2007-07-27 2012-10-09 Dsp Group Limited Method and system for dynamic aliasing suppression
USD589605S1 (en) 2007-08-01 2009-03-31 Trane International Inc. Air inlet grille
JP2009044600A (ja) 2007-08-10 2009-02-26 Panasonic Corp マイクロホン装置およびその製造方法
CN101119323A (zh) 2007-09-21 2008-02-06 腾讯科技（深圳）有限公司 解决网络抖动的方法及装置
US8064629B2 (en) 2007-09-27 2011-11-22 Peigen Jiang Decorative loudspeaker grille
US8175871B2 (en) 2007-09-28 2012-05-08 Qualcomm Incorporated Apparatus and method of noise and echo reduction in multiple microphone audio systems
US8095120B1 (en) 2007-09-28 2012-01-10 Avaya Inc. System and method of synchronizing multiple microphone and speaker-equipped devices to create a conferenced area network
KR101434200B1 (ko) 2007-10-01 2014-08-26 삼성전자주식회사 혼합 사운드로부터의 음원 판별 방법 및 장치
KR101292206B1 (ko) 2007-10-01 2013-08-01 삼성전자주식회사 어레이 스피커 시스템 및 그 구현 방법
JP5012387B2 (ja) 2007-10-05 2012-08-29 ヤマハ株式会社 音声処理システム
US7832080B2 (en) 2007-10-11 2010-11-16 Etymotic Research, Inc. Directional microphone assembly
US8428661B2 (en) 2007-10-30 2013-04-23 Broadcom Corporation Speech intelligibility in telephones with multiple microphones
US8199927B1 (en) 2007-10-31 2012-06-12 ClearOnce Communications, Inc. Conferencing system implementing echo cancellation and push-to-talk microphone detection using two-stage frequency filter
US8290142B1 (en) 2007-11-12 2012-10-16 Clearone Communications, Inc. Echo cancellation in a portable conferencing device with externally-produced audio
EP2208361B1 (en) 2007-11-13 2011-02-16 AKG Acoustics GmbH Microphone arrangement, having two pressure gradient transducers
KR101415026B1 (ko) 2007-11-19 2014-07-04 삼성전자주식회사 마이크로폰 어레이를 이용한 다채널 사운드 획득 방법 및장치
ATE554481T1 (de) 2007-11-21 2012-05-15 Nuance Communications Inc Sprecherlokalisierung
KR101449433B1 (ko) 2007-11-30 2014-10-13 삼성전자주식회사 마이크로폰을 통해 입력된 사운드 신호로부터 잡음을제거하는 방법 및 장치
JP5097523B2 (ja) 2007-12-07 2012-12-12 船井電機株式会社 音声入力装置
US8219387B2 (en) 2007-12-10 2012-07-10 Microsoft Corporation Identifying far-end sound
US8433061B2 (en) 2007-12-10 2013-04-30 Microsoft Corporation Reducing echo
US8744069B2 (en) 2007-12-10 2014-06-03 Microsoft Corporation Removing near-end frequencies from far-end sound
US8175291B2 (en) 2007-12-19 2012-05-08 Qualcomm Incorporated Systems, methods, and apparatus for multi-microphone based speech enhancement
US20090173570A1 (en) 2007-12-20 2009-07-09 Levit Natalia V Acoustically absorbent ceiling tile having barrier facing with diffuse reflectance
USD604729S1 (en) 2008-01-04 2009-11-24 Apple Inc. Electronic device
US7765762B2 (en) 2008-01-08 2010-08-03 Usg Interiors, Inc. Ceiling panel
USD582391S1 (en) 2008-01-17 2008-12-09 Roland Corporation Speaker
USD595402S1 (en) 2008-02-04 2009-06-30 Panasonic Corporation Ventilating fan for a ceiling
WO2009105793A1 (en) 2008-02-26 2009-09-03 Akg Acoustics Gmbh Transducer assembly
JP5003531B2 (ja) 2008-02-27 2012-08-15 ヤマハ株式会社 音声会議システム
WO2009109217A1 (en) 2008-03-03 2009-09-11 Nokia Corporation Apparatus for capturing and rendering a plurality of audio channels
US8503653B2 (en) 2008-03-03 2013-08-06 Alcatel Lucent Method and apparatus for active speaker selection using microphone arrays and speaker recognition
US8873543B2 (en) 2008-03-07 2014-10-28 Arcsoft (Shanghai) Technology Company, Ltd. Implementing a high quality VOIP device
US8626080B2 (en) 2008-03-11 2014-01-07 Intel Corporation Bidirectional iterative beam forming
JP5603325B2 (ja) 2008-04-07 2014-10-08 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 マイクロホン配列からのサラウンド・サウンド生成
US9142221B2 (en) 2008-04-07 2015-09-22 Cambridge Silicon Radio Limited Noise reduction
US8559611B2 (en) 2008-04-07 2013-10-15 Polycom, Inc. Audio signal routing
US8379823B2 (en) 2008-04-07 2013-02-19 Polycom, Inc. Distributed bridging
US8284949B2 (en) 2008-04-17 2012-10-09 University Of Utah Research Foundation Multi-channel acoustic echo cancellation system and method
US8385557B2 (en) 2008-06-19 2013-02-26 Microsoft Corporation Multichannel acoustic echo reduction
US8631897B2 (en) 2008-06-27 2014-01-21 Rgb Systems, Inc. Ceiling loudspeaker system
US8286749B2 (en) 2008-06-27 2012-10-16 Rgb Systems, Inc. Ceiling loudspeaker system
US8672087B2 (en) 2008-06-27 2014-03-18 Rgb Systems, Inc. Ceiling loudspeaker support system
US8109360B2 (en) 2008-06-27 2012-02-07 Rgb Systems, Inc. Method and apparatus for a loudspeaker assembly
US7861825B2 (en) 2008-06-27 2011-01-04 Rgb Systems, Inc. Method and apparatus for a loudspeaker assembly
US8276706B2 (en) 2008-06-27 2012-10-02 Rgb Systems, Inc. Method and apparatus for a loudspeaker assembly
JP4991649B2 (ja) 2008-07-02 2012-08-01 パナソニック株式会社 音声信号処理装置
KR100901464B1 (ko) 2008-07-03 2009-06-08 (주)기가바이트씨앤씨 집음기 및 집음기 세트
EP2146519B1 (en) 2008-07-16 2012-06-06 Nuance Communications, Inc. Beamforming pre-processing for speaker localization
US20100011644A1 (en) 2008-07-17 2010-01-21 Kramer Eric J Memorabilia display system
JP5075042B2 (ja) 2008-07-23 2012-11-14 日本電信電話株式会社 エコー消去装置、エコー消去方法、そのプログラム、記録媒体
USD613338S1 (en) 2008-07-31 2010-04-06 Chris Marukos Interchangeable advertising sign
USD595736S1 (en) 2008-08-15 2009-07-07 Samsung Electronics Co., Ltd. DVD player
WO2010022453A1 (en) 2008-08-29 2010-03-04 Dev-Audio Pty Ltd A microphone array system and method for sound acquisition
US8605890B2 (en) 2008-09-22 2013-12-10 Microsoft Corporation Multichannel acoustic echo cancellation
US20120182834A1 (en) 2008-10-06 2012-07-19 Bbn Technologies Corp. Wearable shooter localization system
WO2010043998A1 (en) 2008-10-16 2010-04-22 Nxp B.V. Microphone system and method of operating the same
US8724829B2 (en) 2008-10-24 2014-05-13 Qualcomm Incorporated Systems, methods, apparatus, and computer-readable media for coherence detection
US8041054B2 (en) 2008-10-31 2011-10-18 Continental Automotive Systems, Inc. Systems and methods for selectively switching between multiple microphones
JP5386936B2 (ja) 2008-11-05 2014-01-15 ヤマハ株式会社 放収音装置
US20100123785A1 (en) 2008-11-17 2010-05-20 Apple Inc. Graphic Control for Directional Audio Input
US8150063B2 (en) 2008-11-25 2012-04-03 Apple Inc. Stabilizing directional audio input from a moving microphone array
KR20100060457A (ko) 2008-11-27 2010-06-07 삼성전자주식회사 이동통신 단말기의 동작모드 제어장치 및 방법
US8744101B1 (en) 2008-12-05 2014-06-03 Starkey Laboratories, Inc. System for controlling the primary lobe of a hearing instrument's directional sensitivity pattern
EP2197219B1 (en) 2008-12-12 2012-10-24 Nuance Communications, Inc. Method for determining a time delay for time delay compensation
US8842851B2 (en) 2008-12-12 2014-09-23 Broadcom Corporation Audio source localization system and method
US8259959B2 (en) 2008-12-23 2012-09-04 Cisco Technology, Inc. Toroid microphone apparatus
NO332961B1 (no) 2008-12-23 2013-02-11 Cisco Systems Int Sarl Forhoyet toroidmikrofonapparat
JP5446275B2 (ja) 2009-01-08 2014-03-19 ヤマハ株式会社 拡声システム
NO333056B1 (no) 2009-01-21 2013-02-25 Cisco Systems Int Sarl Direktiv mikrofon
US8116499B2 (en) 2009-01-23 2012-02-14 John Grant Microphone adaptor for altering the geometry of a microphone without altering its frequency response characteristics
EP2211564B1 (en) 2009-01-23 2014-09-10 Harman Becker Automotive Systems GmbH Passenger compartment communication system
DE102009007891A1 (de) 2009-02-07 2010-08-12 Willsingh Wilson Resonanz-Schallabsorber in mehrschichtiger Ausführung
US8654990B2 (en) 2009-02-09 2014-02-18 Waves Audio Ltd. Multiple microphone based directional sound filter
JP5304293B2 (ja) 2009-02-10 2013-10-02 ヤマハ株式会社 収音装置
DE102009010278B4 (de) 2009-02-16 2018-12-20 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Lautsprecher
EP2222091B1 (en) 2009-02-23 2013-04-24 Nuance Communications, Inc. Method for determining a set of filter coefficients for an acoustic echo compensation means
US20100217590A1 (en) 2009-02-24 2010-08-26 Broadcom Corporation Speaker localization system and method
CN101510426B (zh) 2009-03-23 2013-03-27 北京中星微电子有限公司 一种噪声消除方法及系统
US8184180B2 (en) 2009-03-25 2012-05-22 Broadcom Corporation Spatially synchronized audio and video capture
CN101854573B (zh) 2009-03-30 2014-12-24 富准精密工业(深圳)有限公司 音响结构及使用该音响结构的电子装置
GB0906269D0 (en) 2009-04-09 2009-05-20 Ntnu Technology Transfer As Optimal modal beamformer for sensor arrays
US8291670B2 (en) 2009-04-29 2012-10-23 E.M.E.H., Inc. Modular entrance floor system
US8483398B2 (en) 2009-04-30 2013-07-09 Hewlett-Packard Development Company, L.P. Methods and systems for reducing acoustic echoes in multichannel communication systems by reducing the dimensionality of the space of impulse responses
WO2010129717A1 (en) 2009-05-05 2010-11-11 Abl Ip Holding, Llc Low profile oled luminaire for grid ceilings
WO2010130084A1 (zh) 2009-05-12 2010-11-18 华为终端有限公司 远程呈现系统、方法及视频采集设备
JP5169986B2 (ja) 2009-05-13 2013-03-27 沖電気工業株式会社 電話装置、エコーキャンセラ及びエコーキャンセルプログラム
JP5246044B2 (ja) 2009-05-29 2013-07-24 ヤマハ株式会社 音響装置
JP5451876B2 (ja) 2009-06-02 2014-03-26 コーニンクレッカ フィリップス エヌ ヴェ 音響マルチチャネル相殺
US9140054B2 (en) 2009-06-05 2015-09-22 Oberbroeckling Development Company Insert holding system
US20100314513A1 (en) 2009-06-12 2010-12-16 Rgb Systems, Inc. Method and apparatus for overhead equipment mounting
US8204198B2 (en) 2009-06-19 2012-06-19 Magor Communications Corporation Method and apparatus for selecting an audio stream
JP2011015018A (ja) 2009-06-30 2011-01-20 Clarion Co Ltd 自動音量制御装置
WO2011007418A1 (ja) 2009-07-14 2011-01-20 株式会社ビジョナリスト 画像データ表示システム及び画像データ表示プログラム
JP5347794B2 (ja) 2009-07-21 2013-11-20 ヤマハ株式会社 エコー抑圧方法およびその装置
FR2948484B1 (fr) 2009-07-23 2011-07-29 Parrot Procede de filtrage des bruits lateraux non-stationnaires pour un dispositif audio multi-microphone, notamment un dispositif telephonique "mains libres" pour vehicule automobile
USD614871S1 (en) 2009-08-07 2010-05-04 Hon Hai Precision Industry Co., Ltd. Digital photo frame
US8233352B2 (en) 2009-08-17 2012-07-31 Broadcom Corporation Audio source localization system and method
GB2473267A (en) 2009-09-07 2011-03-09 Nokia Corp Processing audio signals to reduce noise
JP5452158B2 (ja) 2009-10-07 2014-03-26 株式会社日立製作所 音響監視システム、及び音声集音システム
GB201011530D0 (en) 2010-07-08 2010-08-25 Berry Michael T Encasements comprising phase change materials
JP5347902B2 (ja) 2009-10-22 2013-11-20 ヤマハ株式会社 音響処理装置
US20110096915A1 (en) 2009-10-23 2011-04-28 Broadcom Corporation Audio spatialization for conference calls with multiple and moving talkers
USD643015S1 (en) 2009-11-05 2011-08-09 Lg Electronics Inc. Speaker for home theater
CN102860039B (zh) 2009-11-12 2016-10-19 罗伯特·亨利·弗莱特 免提电话和/或麦克风阵列以及使用它们的方法和系统
US8515109B2 (en) 2009-11-19 2013-08-20 Gn Resound A/S Hearing aid with beamforming capability
US8724798B2 (en) 2009-11-20 2014-05-13 Adobe Systems Incorporated System and method for acoustic echo cancellation using spectral decomposition
USD617441S1 (en) 2009-11-30 2010-06-08 Panasonic Corporation Ceiling ventilating fan
CH702399B1 (fr) 2009-12-02 2018-05-15 Veovox Sa Appareil et procédé pour la saisie et le traitement de la voix.
US9147385B2 (en) 2009-12-15 2015-09-29 Smule, Inc. Continuous score-coded pitch correction
EP2517481A4 (en) 2009-12-22 2015-06-03 Mh Acoustics Llc SURFACE MOUNTED MICROPHONE ARRAYS ON FLEXIBLE PRINTED CIRCUIT BOARDS
US8634569B2 (en) 2010-01-08 2014-01-21 Conexant Systems, Inc. Systems and methods for echo cancellation and echo suppression
EP2360940A1 (en) 2010-01-19 2011-08-24 Televic NV. Steerable microphone array system with a first order directional pattern
USD658153S1 (en) 2010-01-25 2012-04-24 Lg Electronics Inc. Home theater receiver
US8583481B2 (en) 2010-02-12 2013-11-12 Walter Viveiros Portable interactive modular selling room
AU2010346387B2 (en) 2010-02-19 2014-01-16 Sivantos Pte. Ltd. Device and method for direction dependent spatial noise reduction
JP5550406B2 (ja) 2010-03-23 2014-07-16 株式会社オーディオテクニカ 可変指向性マイクロホン
USD642385S1 (en) 2010-03-31 2011-08-02 Samsung Electronics Co., Ltd. Electronic frame
CN101860776B (zh) 2010-05-07 2013-08-21 中国科学院声学研究所 一种平面螺旋形传声器阵列
US8395653B2 (en) 2010-05-18 2013-03-12 Polycom, Inc. Videoconferencing endpoint having multiple voice-tracking cameras
US8515089B2 (en) 2010-06-04 2013-08-20 Apple Inc. Active noise cancellation decisions in a portable audio device
USD636188S1 (en) 2010-06-17 2011-04-19 Samsung Electronics Co., Ltd. Electronic frame
USD655271S1 (en) 2010-06-17 2012-03-06 Lg Electronics Inc. Home theater receiver
US9094496B2 (en) 2010-06-18 2015-07-28 Avaya Inc. System and method for stereophonic acoustic echo cancellation
US8638951B2 (en) 2010-07-15 2014-01-28 Motorola Mobility Llc Electronic apparatus for generating modified wideband audio signals based on two or more wideband microphone signals
WO2012009689A1 (en) 2010-07-15 2012-01-19 Aliph, Inc. Wireless conference call telephone
US8755174B2 (en) 2010-07-16 2014-06-17 Ensco, Inc. Media appliance and method for use of same
US9769519B2 (en) 2010-07-16 2017-09-19 Enseo, Inc. Media appliance and method for use of same
US8965546B2 (en) 2010-07-26 2015-02-24 Qualcomm Incorporated Systems, methods, and apparatus for enhanced acoustic imaging
US9172345B2 (en) 2010-07-27 2015-10-27 Bitwave Pte Ltd Personalized adjustment of an audio device
WO2012016136A2 (en) * 2010-07-30 2012-02-02 The General Hospital Corporation Microscale and nanoscale structures for manipulating particles
CN101894558A (zh) 2010-08-04 2010-11-24 华为技术有限公司 丢帧恢复方法、设备以及语音增强方法、设备和系统
BR112012031656A2 (pt) 2010-08-25 2016-11-08 Asahi Chemical Ind dispositivo, e método de separação de fontes sonoras, e, programa
KR101750338B1 (ko) 2010-09-13 2017-06-23 삼성전자주식회사 마이크의 빔포밍 수행 방법 및 장치
US8861756B2 (en) 2010-09-24 2014-10-14 LI Creative Technologies, Inc. Microphone array system
US9008302B2 (en) * 2010-10-08 2015-04-14 Optical Fusion, Inc. Audio acoustic echo cancellation for video conferencing
US8553904B2 (en) 2010-10-14 2013-10-08 Hewlett-Packard Development Company, L.P. Systems and methods for performing sound source localization
US8976977B2 (en) 2010-10-15 2015-03-10 King's College London Microphone array
US9031256B2 (en) 2010-10-25 2015-05-12 Qualcomm Incorporated Systems, methods, apparatus, and computer-readable media for orientation-sensitive recording control
US9552840B2 (en) 2010-10-25 2017-01-24 Qualcomm Incorporated Three-dimensional sound capturing and reproducing with multi-microphones
EP2448289A1 (en) 2010-10-28 2012-05-02 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for deriving a directional information and computer program product
KR101715779B1 (ko) 2010-11-09 2017-03-13 삼성전자주식회사 음원 신호 처리 장치 및 그 방법
US11120818B2 (en) 2010-11-12 2021-09-14 Nokia Technologies Oy Processing audio with a visual representation of an audio source
US9578440B2 (en) 2010-11-15 2017-02-21 The Regents Of The University Of California Method for controlling a speaker array to provide spatialized, localized, and binaural virtual surround sound
US8761412B2 (en) 2010-12-16 2014-06-24 Sony Computer Entertainment Inc. Microphone array steering with image-based source location
US20130294616A1 (en) 2010-12-20 2013-11-07 Phonak Ag Method and system for speech enhancement in a room
US9084038B2 (en) 2010-12-22 2015-07-14 Sony Corporation Method of controlling audio recording and electronic device
KR101761312B1 (ko) 2010-12-23 2017-07-25 삼성전자주식회사 마이크 어레이를 이용한 방향성 음원 필터링 장치 및 그 제어방법
KR101852569B1 (ko) 2011-01-04 2018-06-12 삼성전자주식회사 은닉 마이크로폰 배치 구조를 가진 마이크로폰 어레이 장치 및 그 마이크로폰 어레이 장치를 포함한 음향 신호 처리 장치
US8525868B2 (en) 2011-01-13 2013-09-03 Qualcomm Incorporated Variable beamforming with a mobile platform
JP5395822B2 (ja) 2011-02-07 2014-01-22 日本電信電話株式会社 ズームマイク装置
US9100735B1 (en) 2011-02-10 2015-08-04 Dolby Laboratories Licensing Corporation Vector noise cancellation
US20120207335A1 (en) 2011-02-14 2012-08-16 Nxp B.V. Ported mems microphone
EP2681929A1 (en) 2011-03-03 2014-01-08 David Clark Company Incorporated Voice activation system and method and communication system and method using the same
US8929564B2 (en) 2011-03-03 2015-01-06 Microsoft Corporation Noise adaptive beamforming for microphone arrays
US9354310B2 (en) 2011-03-03 2016-05-31 Qualcomm Incorporated Systems, methods, apparatus, and computer-readable media for source localization using audible sound and ultrasound
WO2012122132A1 (en) 2011-03-04 2012-09-13 University Of Washington Dynamic distribution of acoustic energy in a projected sound field and associated systems and methods
US8942382B2 (en) 2011-03-22 2015-01-27 Mh Acoustics Llc Dynamic beamformer processing for acoustic echo cancellation in systems with high acoustic coupling
KR20120108137A (ko) * 2011-03-23 2012-10-05 주식회사 나무가 에코제거장치 및 에코제거방법
US8676728B1 (en) 2011-03-30 2014-03-18 Rawles Llc Sound localization with artificial neural network
US8620650B2 (en) 2011-04-01 2013-12-31 Bose Corporation Rejecting noise with paired microphones
US8811601B2 (en) 2011-04-04 2014-08-19 Qualcomm Incorporated Integrated echo cancellation and noise suppression
US20120262536A1 (en) 2011-04-14 2012-10-18 Microsoft Corporation Stereophonic teleconferencing using a microphone array
GB2494849A (en) 2011-04-14 2013-03-27 Orbitsound Ltd Microphone assembly
WO2012159217A1 (en) 2011-05-23 2012-11-29 Phonak Ag A method of processing a signal in a hearing instrument, and hearing instrument
USD682266S1 (en) 2011-05-23 2013-05-14 Arcadyan Technology Corporation WLAN ADSL device
WO2012160459A1 (en) 2011-05-24 2012-11-29 Koninklijke Philips Electronics N.V. Privacy sound system
US9226088B2 (en) 2011-06-11 2015-12-29 Clearone Communications, Inc. Methods and apparatuses for multiple configurations of beamforming microphone arrays
US9215327B2 (en) 2011-06-11 2015-12-15 Clearone Communications, Inc. Methods and apparatuses for multi-channel acoustic echo cancelation
USD656473S1 (en) 2011-06-11 2012-03-27 Amx Llc Wall display
CA2838856A1 (en) 2011-06-14 2012-12-20 Rgb Systems, Inc. Ceiling loudspeaker system
CN102833664A (zh) 2011-06-15 2012-12-19 Rgb系统公司 天花板扩音器系统
US9973848B2 (en) 2011-06-21 2018-05-15 Amazon Technologies, Inc. Signal-enhancing beamforming in an augmented reality environment
JP5799619B2 (ja) 2011-06-24 2015-10-28 船井電機株式会社 マイクロホンユニット
DE102011051727A1 (de) 2011-07-11 2013-01-17 Pinta Acoustic Gmbh Verfahren und Vorrichtung zur aktiven Schallmaskierung
US9066055B2 (en) 2011-07-27 2015-06-23 Texas Instruments Incorporated Power supply architectures for televisions and other powered devices
JP5289517B2 (ja) 2011-07-28 2013-09-11 株式会社半導体理工学研究センター センサネットワークシステムとその通信方法
EP2552128A1 (en) 2011-07-29 2013-01-30 Sonion Nederland B.V. A dual cartridge directional microphone
CN102915737B (zh) 2011-07-31 2018-01-19 中兴通讯股份有限公司 一种浊音起始帧后丢帧的补偿方法和装置
US9253567B2 (en) 2011-08-31 2016-02-02 Stmicroelectronics S.R.L. Array microphone apparatus for generating a beam forming signal and beam forming method thereof
US10015589B1 (en) 2011-09-02 2018-07-03 Cirrus Logic, Inc. Controlling speech enhancement algorithms using near-field spatial statistics
USD678329S1 (en) 2011-09-21 2013-03-19 Samsung Electronics Co., Ltd. Portable multimedia terminal
USD686182S1 (en) 2011-09-26 2013-07-16 Nakayo Telecommunications, Inc. Audio equipment for audio teleconferences
KR101751749B1 (ko) 2011-09-27 2017-07-03 한국전자통신연구원 이차원 지향성 스피커 어레이 모듈
GB2495130B (en) 2011-09-30 2018-10-24 Skype Processing audio signals
JP5685173B2 (ja) 2011-10-04 2015-03-18 Toa株式会社 拡声システム
JP5668664B2 (ja) 2011-10-12 2015-02-12 船井電機株式会社 マイクロホン装置、マイクロホン装置を備えた電子機器、マイクロホン装置の製造方法、マイクロホン装置用基板およびマイクロホン装置用基板の製造方法
US9143879B2 (en) 2011-10-19 2015-09-22 James Keith McElveen Directional audio array apparatus and system
USD693328S1 (en) 2011-11-09 2013-11-12 Sony Corporation Speaker box
GB201120392D0 (en) 2011-11-25 2012-01-11 Skype Ltd Processing signals
US8983089B1 (en) 2011-11-28 2015-03-17 Rawles Llc Sound source localization using multiple microphone arrays
KR101282673B1 (ko) 2011-12-09 2013-07-05 현대자동차주식회사 음원 위치 추정 방법
US9408011B2 (en) 2011-12-19 2016-08-02 Qualcomm Incorporated Automated user/sensor location recognition to customize audio performance in a distributed multi-sensor environment
USD687432S1 (en) 2011-12-28 2013-08-06 Hon Hai Precision Industry Co., Ltd. Tablet personal computer
US9197974B1 (en) 2012-01-06 2015-11-24 Audience, Inc. Directional audio capture adaptation based on alternative sensory input
US8511429B1 (en) 2012-02-13 2013-08-20 Usg Interiors, Llc Ceiling panels made from corrugated cardboard
USD699712S1 (en) 2012-02-29 2014-02-18 Clearone Communications, Inc. Beamforming microphone
JP5741487B2 (ja) 2012-02-29 2015-07-01 オムロン株式会社 マイクロフォン
WO2013144609A1 (en) 2012-03-26 2013-10-03 University Of Surrey Acoustic source separation
CN102646418B (zh) 2012-03-29 2014-07-23 北京华夏电通科技股份有限公司 一种远程音频交互的多路声学回音消除方法及系统
EP2845189B1 (en) 2012-04-30 2018-09-05 Creative Technology Ltd. A universal reconfigurable echo cancellation system
US9336792B2 (en) 2012-05-07 2016-05-10 Marvell World Trade Ltd. Systems and methods for voice enhancement in audio conference
US9423870B2 (en) 2012-05-08 2016-08-23 Google Inc. Input determination method
US9736604B2 (en) 2012-05-11 2017-08-15 Qualcomm Incorporated Audio user interaction recognition and context refinement
US20130329908A1 (en) 2012-06-08 2013-12-12 Apple Inc. Adjusting audio beamforming settings based on system state
US20130332156A1 (en) 2012-06-11 2013-12-12 Apple Inc. Sensor Fusion to Improve Speech/Audio Processing in a Mobile Device
US20130343549A1 (en) 2012-06-22 2013-12-26 Verisilicon Holdings Co., Ltd. Microphone arrays for generating stereo and surround channels, method of operation thereof and module incorporating the same
US9560446B1 (en) 2012-06-27 2017-01-31 Amazon Technologies, Inc. Sound source locator with distributed microphone array
US20140003635A1 (en) 2012-07-02 2014-01-02 Qualcomm Incorporated Audio signal processing device calibration
US9065901B2 (en) 2012-07-03 2015-06-23 Harris Corporation Electronic communication devices with integrated microphones
US20140016794A1 (en) 2012-07-13 2014-01-16 Conexant Systems, Inc. Echo cancellation system and method with multiple microphones and multiple speakers
AU2012384922B2 (en) 2012-07-13 2015-11-12 Razer (Asia-Pacific) Pte. Ltd. An audio signal output device and method of processing an audio signal
CN104488288B (zh) 2012-07-27 2018-02-23 索尼公司 信息处理系统和存储介质
US9258644B2 (en) 2012-07-27 2016-02-09 Nokia Technologies Oy Method and apparatus for microphone beamforming
US9094768B2 (en) 2012-08-02 2015-07-28 Crestron Electronics Inc. Loudspeaker calibration using multiple wireless microphones
CN102821336B (zh) 2012-08-08 2015-01-21 英爵音响（上海）有限公司 吸顶式平板音响
US9113243B2 (en) 2012-08-16 2015-08-18 Cisco Technology, Inc. Method and system for obtaining an audio signal
USD725059S1 (en) 2012-08-29 2015-03-24 Samsung Electronics Co., Ltd. Television receiver
US9031262B2 (en) 2012-09-04 2015-05-12 Avid Technology, Inc. Distributed, self-scaling, network-based architecture for sound reinforcement, mixing, and monitoring
US8873789B2 (en) 2012-09-06 2014-10-28 Audix Corporation Articulating microphone mount
US9088336B2 (en) 2012-09-06 2015-07-21 Imagination Technologies Limited Systems and methods of echo and noise cancellation in voice communication
KR102062195B1 (ko) 2012-09-10 2020-02-11 로베르트 보쉬 게엠베하 성형 인터커넥트 디바이스를 갖는 mems 마이크로폰 패키지
US10051396B2 (en) 2012-09-10 2018-08-14 Nokia Technologies Oy Automatic microphone switching
USD685346S1 (en) 2012-09-14 2013-07-02 Research In Motion Limited Speaker
US8987842B2 (en) 2012-09-14 2015-03-24 Solid State System Co., Ltd. Microelectromechanical system (MEMS) device and fabrication method thereof
US9549253B2 (en) 2012-09-26 2017-01-17 Foundation for Research and Technology—Hellas (FORTH) Institute of Computer Science (ICS) Sound source localization and isolation apparatuses, methods and systems
WO2014055312A1 (en) 2012-10-02 2014-04-10 Mh Acoustics, Llc Earphones having configurable microphone arrays
US9264799B2 (en) 2012-10-04 2016-02-16 Siemens Aktiengesellschaft Method and apparatus for acoustic area monitoring by exploiting ultra large scale arrays of microphones
US9615172B2 (en) 2012-10-04 2017-04-04 Siemens Aktiengesellschaft Broadband sensor location selection using convex optimization in very large scale arrays
US20140098233A1 (en) 2012-10-05 2014-04-10 Sensormatic Electronics, LLC Access Control Reader with Audio Spatial Filtering
US9232310B2 (en) 2012-10-15 2016-01-05 Nokia Technologies Oy Methods, apparatuses and computer program products for facilitating directional audio capture with multiple microphones
PL401372A1 (pl) 2012-10-26 2014-04-28 Ivona Software Spółka Z Ograniczoną Odpowiedzialnością Hybrydowa kompresja danych głosowych w systemach zamiany tekstu na mowę
US9247367B2 (en) 2012-10-31 2016-01-26 International Business Machines Corporation Management system with acoustical measurement for monitoring noise levels
US9232185B2 (en) 2012-11-20 2016-01-05 Clearone Communications, Inc. Audio conferencing system for all-in-one displays
WO2014085978A1 (en) 2012-12-04 2014-06-12 Northwestern Polytechnical University Low noise differential microphone arrays
CN103888630A (zh) 2012-12-20 2014-06-25 杜比实验室特许公司 用于控制声学回声消除的方法和音频处理装置
JP2014143678A (ja) 2012-12-27 2014-08-07 Panasonic Corp 音声処理システム及び音声処理方法
JP6074263B2 (ja) 2012-12-27 2017-02-01 キヤノン株式会社 雑音抑圧装置及びその制御方法
CN103903627B (zh) 2012-12-27 2018-06-19 中兴通讯股份有限公司 一种语音数据的传输方法及装置
USD735717S1 (en) 2012-12-29 2015-08-04 Intel Corporation Electronic display device
TWI593294B (zh) 2013-02-07 2017-07-21 晨星半導體股份有限公司 收音系統與相關方法
JP6253031B2 (ja) 2013-02-15 2017-12-27 パナソニックＩｐマネジメント株式会社 キャリブレーション方法
TWM457212U (zh) 2013-02-21 2013-07-11 Chi Mei Comm Systems Inc 殼體組件
US9167326B2 (en) 2013-02-21 2015-10-20 Core Brands, Llc In-wall multiple-bay loudspeaker system
US9294839B2 (en) 2013-03-01 2016-03-22 Clearone, Inc. Augmentation of a beamforming microphone array with non-beamforming microphones
EP2965312B1 (en) 2013-03-05 2019-01-02 Apple Inc. Adjusting the beam pattern of a speaker array based on the location of one or more listeners
CN104053088A (zh) 2013-03-11 2014-09-17 联想(北京)有限公司 一种麦克风阵列调整方法、麦克风阵列及电子设备
US9319799B2 (en) 2013-03-14 2016-04-19 Robert Bosch Gmbh Microphone package with integrated substrate
US20140357177A1 (en) 2013-03-14 2014-12-04 Rgb Systems, Inc. Suspended ceiling-mountable enclosure
US9877580B2 (en) 2013-03-14 2018-01-30 Rgb Systems, Inc. Suspended ceiling-mountable enclosure
US9516428B2 (en) 2013-03-14 2016-12-06 Infineon Technologies Ag MEMS acoustic transducer, MEMS microphone, MEMS microspeaker, array of speakers and method for manufacturing an acoustic transducer
US20170206064A1 (en) 2013-03-15 2017-07-20 JIBO, Inc. Persistent companion device configuration and deployment platform
US9661418B2 (en) 2013-03-15 2017-05-23 Loud Technologies Inc Method and system for large scale audio system
US8861713B2 (en) 2013-03-17 2014-10-14 Texas Instruments Incorporated Clipping based on cepstral distance for acoustic echo canceller
WO2014147442A1 (en) 2013-03-20 2014-09-25 Nokia Corporation Spatial audio apparatus
CN104065798B (zh) 2013-03-21 2016-08-03 华为技术有限公司 声音信号处理方法及设备
TWI486002B (zh) 2013-03-29 2015-05-21 Hon Hai Prec Ind Co Ltd 可消除干擾的電子裝置
CN105191345B (zh) 2013-03-29 2016-11-02 日产自动车株式会社 声源探测用麦克风支承装置
US9038301B2 (en) 2013-04-15 2015-05-26 Rose Displays Ltd. Illuminable panel frame assembly arrangement
KR102172718B1 (ko) 2013-04-29 2020-11-02 유니버시티 오브 서레이 음원 분리를 위한 마이크로폰 어레이
US9936290B2 (en) 2013-05-03 2018-04-03 Qualcomm Incorporated Multi-channel echo cancellation and noise suppression
US20160155455A1 (en) 2013-05-22 2016-06-02 Nokia Technologies Oy A shared audio scene apparatus
EP3001417A4 (en) 2013-05-23 2017-05-03 NEC Corporation Sound processing system, sound processing method, sound processing program, vehicle equipped with sound processing system, and microphone installation method
GB201309781D0 (en) 2013-05-31 2013-07-17 Microsoft Corp Echo cancellation
US9357080B2 (en) 2013-06-04 2016-05-31 Broadcom Corporation Spatial quiescence protection for multi-channel acoustic echo cancellation
US20140363008A1 (en) 2013-06-05 2014-12-11 DSP Group Use of vibration sensor in acoustic echo cancellation
WO2014199446A1 (ja) 2013-06-11 2014-12-18 Toa株式会社 マイクロホン装置
EP3011758B1 (en) 2013-06-18 2020-09-30 Creative Technology Ltd. Headset with end-firing microphone array and automatic calibration of end-firing array
USD717272S1 (en) 2013-06-24 2014-11-11 Lg Electronics Inc. Speaker
USD743376S1 (en) 2013-06-25 2015-11-17 Lg Electronics Inc. Speaker
EP2819430A1 (en) 2013-06-27 2014-12-31 Speech Processing Solutions GmbH Handheld mobile recording device with microphone characteristic selection means
DE102013213717A1 (de) 2013-07-12 2015-01-15 Robert Bosch Gmbh MEMS-Bauelement mit einer Mikrofonstruktur und Verfahren zu dessen Herstellung
US9426598B2 (en) 2013-07-15 2016-08-23 Dts, Inc. Spatial calibration of surround sound systems including listener position estimation
US9257132B2 (en) 2013-07-16 2016-02-09 Texas Instruments Incorporated Dominant speech extraction in the presence of diffused and directional noise sources
USD756502S1 (en) 2013-07-23 2016-05-17 Applied Materials, Inc. Gas diffuser assembly
JP2015027124A (ja) 2013-07-24 2015-02-05 船井電機株式会社 給電システム、電子機器、ケーブル、プログラム
US9445196B2 (en) 2013-07-24 2016-09-13 Mh Acoustics Llc Inter-channel coherence reduction for stereophonic and multichannel acoustic echo cancellation
USD725631S1 (en) 2013-07-31 2015-03-31 Sol Republic Inc. Speaker
CN104347076B (zh) 2013-08-09 2017-07-14 中国电信股份有限公司 网络音频丢包掩蔽方法和装置
US9319532B2 (en) 2013-08-15 2016-04-19 Cisco Technology, Inc. Acoustic echo cancellation for audio system with bring your own devices (BYOD)
US9203494B2 (en) 2013-08-20 2015-12-01 Broadcom Corporation Communication device with beamforming and methods for use therewith
USD726144S1 (en) 2013-08-23 2015-04-07 Panasonic Intellectual Property Management Co., Ltd. Wireless speaker
GB2517690B (en) 2013-08-26 2017-02-08 Canon Kk Method and device for localizing sound sources placed within a sound environment comprising ambient noise
USD729767S1 (en) 2013-09-04 2015-05-19 Samsung Electronics Co., Ltd. Speaker
US9549079B2 (en) 2013-09-05 2017-01-17 Cisco Technology, Inc. Acoustic echo cancellation for microphone array with dynamically changing beam forming
US20150070188A1 (en) 2013-09-09 2015-03-12 Soil IQ, Inc. Monitoring device and method of use
US9763004B2 (en) 2013-09-17 2017-09-12 Alcatel Lucent Systems and methods for audio conferencing
CN104464739B (zh) 2013-09-18 2017-08-11 华为技术有限公司 音频信号处理方法及装置、差分波束形成方法及装置
US9591404B1 (en) 2013-09-27 2017-03-07 Amazon Technologies, Inc. Beamformer design using constrained convex optimization in three-dimensional space
US20150097719A1 (en) 2013-10-03 2015-04-09 Sulon Technologies Inc. System and method for active reference positioning in an augmented reality environment
US9466317B2 (en) 2013-10-11 2016-10-11 Facebook, Inc. Generating a reference audio fingerprint for an audio signal associated with an event
EP2866465B1 (en) 2013-10-25 2020-07-22 Harman Becker Automotive Systems GmbH Spherical microphone array
US20150118960A1 (en) 2013-10-28 2015-04-30 Aliphcom Wearable communication device
US9215543B2 (en) 2013-12-03 2015-12-15 Cisco Technology, Inc. Microphone mute/unmute notification
USD727968S1 (en) 2013-12-17 2015-04-28 Panasonic Intellectual Property Management Co., Ltd. Digital video disc player
US20150185825A1 (en) 2013-12-30 2015-07-02 Daqri, Llc Assigning a virtual user interface to a physical object
USD718731S1 (en) 2014-01-02 2014-12-02 Samsung Electronics Co., Ltd. Television receiver
JP6289121B2 (ja) 2014-01-23 2018-03-07 キヤノン株式会社 音響信号処理装置、動画撮影装置およびそれらの制御方法
JP6204618B2 (ja) 2014-02-10 2017-09-27 ボーズ・コーポレーションＢｏｓｅ Ｃｏｒｐｏｒａｔｉｏｎ 会話支援システム
US9351060B2 (en) 2014-02-14 2016-05-24 Sonic Blocks, Inc. Modular quick-connect A/V system and methods thereof
JP6281336B2 (ja) 2014-03-12 2018-02-21 沖電気工業株式会社 音声復号化装置及びプログラム
US9226062B2 (en) 2014-03-18 2015-12-29 Cisco Technology, Inc. Techniques to mitigate the effect of blocked sound at microphone arrays in a telepresence device
US9432768B1 (en) 2014-03-28 2016-08-30 Amazon Technologies, Inc. Beam forming for a wearable computer
US9516412B2 (en) 2014-03-28 2016-12-06 Panasonic Intellectual Property Management Co., Ltd. Directivity control apparatus, directivity control method, storage medium and directivity control system
US20150281832A1 (en) 2014-03-28 2015-10-01 Panasonic Intellectual Property Management Co., Ltd. Sound processing apparatus, sound processing system and sound processing method
US20150281834A1 (en) 2014-03-28 2015-10-01 Funai Electric Co., Ltd. Microphone device and microphone unit
GB2521881B (en) 2014-04-02 2016-02-10 Imagination Tech Ltd Auto-tuning of non-linear processor threshold
GB2519392B (en) 2014-04-02 2016-02-24 Imagination Tech Ltd Auto-tuning of an acoustic echo canceller
US10182280B2 (en) 2014-04-23 2019-01-15 Panasonic Intellectual Property Management Co., Ltd. Sound processing apparatus, sound processing system and sound processing method
USD743939S1 (en) 2014-04-28 2015-11-24 Samsung Electronics Co., Ltd. Speaker
US9414153B2 (en) 2014-05-08 2016-08-09 Panasonic Intellectual Property Management Co., Ltd. Directivity control apparatus, directivity control method, storage medium and directivity control system
AU2015265541A1 (en) 2014-05-26 2017-01-12 Vladimir Sherman Methods circuits devices systems and associated computer executable code for acquiring acoustic signals
USD740279S1 (en) 2014-05-29 2015-10-06 Compal Electronics, Inc. Chromebook with trapezoid shape
DE102014217344A1 (de) 2014-06-05 2015-12-17 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Lautsprechersystem
CN104036784B (zh) 2014-06-06 2017-03-08 华为技术有限公司 一种回声消除方法及装置
JP1525681S (zh) 2014-06-18 2017-05-22
US9589556B2 (en) 2014-06-19 2017-03-07 Yang Gao Energy adjustment of acoustic echo replica signal for speech enhancement
USD737245S1 (en) 2014-07-03 2015-08-25 Wall Audio, Inc. Planar loudspeaker
USD754092S1 (en) 2014-07-11 2016-04-19 Harman International Industries, Incorporated Portable loudspeaker
JP6149818B2 (ja) 2014-07-18 2017-06-21 沖電気工業株式会社 収音再生システム、収音再生装置、収音再生方法、収音再生プログラム、収音システム及び再生システム
CA2956016A1 (en) 2014-07-23 2016-01-28 The Australian National University Planar sensor array
US9762742B2 (en) 2014-07-24 2017-09-12 Conexant Systems, Llc Robust acoustic echo cancellation for loosely paired devices based on semi-blind multichannel demixing
JP6210458B2 (ja) 2014-07-30 2017-10-11 パナソニックＩｐマネジメント株式会社 故障検知システム及び故障検知方法
JP6446893B2 (ja) 2014-07-31 2019-01-09 富士通株式会社 エコー抑圧装置、エコー抑圧方法及びエコー抑圧用コンピュータプログラム
US20160031700A1 (en) 2014-08-01 2016-02-04 Pixtronix, Inc. Microelectromechanical microphone
US9326060B2 (en) 2014-08-04 2016-04-26 Apple Inc. Beamforming in varying sound pressure level
JP6202277B2 (ja) 2014-08-05 2017-09-27 パナソニックＩｐマネジメント株式会社 音声処理システム及び音声処理方法
US9818426B2 (en) 2014-08-13 2017-11-14 Mitsubishi Electric Corporation Echo canceller
US9940944B2 (en) 2014-08-19 2018-04-10 Qualcomm Incorporated Smart mute for a communication device
US10269343B2 (en) 2014-08-28 2019-04-23 Analog Devices, Inc. Audio processing using an intelligent microphone
JP2016051038A (ja) 2014-08-29 2016-04-11 株式会社Ｊｖｃケンウッド ノイズゲート装置
US20160100092A1 (en) 2014-10-01 2016-04-07 Fortemedia, Inc. Object tracking device and tracking method thereof
US9521057B2 (en) 2014-10-14 2016-12-13 Amazon Technologies, Inc. Adaptive audio stream with latency compensation
GB2547063B (en) * 2014-10-30 2018-01-31 Imagination Tech Ltd Noise estimator
GB2525947B (en) 2014-10-31 2016-06-22 Imagination Tech Ltd Automatic tuning of a gain controller
US20160150315A1 (en) 2014-11-20 2016-05-26 GM Global Technology Operations LLC System and method for echo cancellation
KR101990370B1 (ko) 2014-11-26 2019-06-18 한화테크윈 주식회사 카메라 시스템 및 카메라 시스템 동작 방법
US9654868B2 (en) 2014-12-05 2017-05-16 Stages Llc Multi-channel multi-domain source identification and tracking
US9860635B2 (en) 2014-12-15 2018-01-02 Panasonic Intellectual Property Management Co., Ltd. Microphone array, monitoring system, and sound pickup setting method
CN105812598B (zh) * 2014-12-30 2019-04-30 展讯通信（上海）有限公司 一种降低回声的方法及装置
US9525934B2 (en) 2014-12-31 2016-12-20 Stmicroelectronics Asia Pacific Pte Ltd. Steering vector estimation for minimum variance distortionless response (MVDR) beamforming circuits, systems, and methods
USD754103S1 (en) 2015-01-02 2016-04-19 Harman International Industries, Incorporated Loudspeaker
JP6631010B2 (ja) 2015-02-04 2020-01-15 ヤマハ株式会社 マイク選択装置、マイクシステムおよびマイク選択方法
JP2016146547A (ja) 2015-02-06 2016-08-12 パナソニックＩｐマネジメント株式会社 収音システム及び収音方法
CN106162427B (zh) 2015-03-24 2019-09-17 青岛海信电器股份有限公司 一种声音获取元件的指向性调整方法和装置
US9716944B2 (en) 2015-03-30 2017-07-25 Microsoft Technology Licensing, Llc Adjustable audio beamforming
US10567827B2 (en) 2015-04-10 2020-02-18 Sennheiser Electronic Gmbh & Co. Kg Method of detecting and synchronizing audio and video signals and audio/video detection and synchronization system
USD784299S1 (en) 2015-04-30 2017-04-18 Shure Acquisition Holdings, Inc. Array microphone assembly
US9554207B2 (en) 2015-04-30 2017-01-24 Shure Acquisition Holdings, Inc. Offset cartridge microphones
US9565493B2 (en) 2015-04-30 2017-02-07 Shure Acquisition Holdings, Inc. Array microphone system and method of assembling the same
US10602265B2 (en) 2015-05-04 2020-03-24 Rensselaer Polytechnic Institute Coprime microphone array system
US10028053B2 (en) 2015-05-05 2018-07-17 Wave Sciences, LLC Portable computing device microphone array
CN107534725B (zh) 2015-05-19 2020-06-16 华为技术有限公司 一种语音信号处理方法及装置
USD801285S1 (en) 2015-05-29 2017-10-31 Optical Cable Corporation Ceiling mount box
US10412483B2 (en) 2015-05-30 2019-09-10 Audix Corporation Multi-element shielded microphone and suspension system
US10452339B2 (en) 2015-06-05 2019-10-22 Apple Inc. Mechanism for retrieval of previously captured audio
TWD179475S (zh) 2015-07-14 2016-11-11 宏碁股份有限公司 筆記型電腦之部分
US10909384B2 (en) 2015-07-14 2021-02-02 Panasonic Intellectual Property Management Co., Ltd. Monitoring system and monitoring method
CN106403016B (zh) 2015-07-30 2019-07-26 Lg电子株式会社 空调机的室内机
EP3131311B1 (en) 2015-08-14 2019-06-19 Nokia Technologies Oy Monitoring
US20170064451A1 (en) 2015-08-25 2017-03-02 New York University Ubiquitous sensing environment
US9655001B2 (en) 2015-09-24 2017-05-16 Cisco Technology, Inc. Cross mute for native radio channels
CA2944636C (en) 2015-10-07 2019-01-22 Tony J. Branham Lighted mirror with sound system
US9961437B2 (en) 2015-10-08 2018-05-01 Signal Essence, LLC Dome shaped microphone array with circularly distributed microphones
USD787481S1 (en) 2015-10-21 2017-05-23 Cisco Technology, Inc. Microphone support
CN105355210B (zh) 2015-10-30 2020-06-23 百度在线网络技术（北京）有限公司 用于远场语音识别的预处理方法和装置
EP3360250B1 (en) 2015-11-18 2020-09-02 Huawei Technologies Co., Ltd. A sound signal processing apparatus and method for enhancing a sound signal
US11064291B2 (en) 2015-12-04 2021-07-13 Sennheiser Electronic Gmbh & Co. Kg Microphone array system
US9894434B2 (en) 2015-12-04 2018-02-13 Sennheiser Electronic Gmbh & Co. Kg Conference system with a microphone array system and a method of speech acquisition in a conference system
US9479885B1 (en) 2015-12-08 2016-10-25 Motorola Mobility Llc Methods and apparatuses for performing null steering of adaptive microphone array
US9641935B1 (en) 2015-12-09 2017-05-02 Motorola Mobility Llc Methods and apparatuses for performing adaptive equalization of microphone arrays
USD788073S1 (en) 2015-12-29 2017-05-30 Sdi Technologies, Inc. Mono bluetooth speaker
US9479627B1 (en) 2015-12-29 2016-10-25 Gn Audio A/S Desktop speakerphone
CN105548998B (zh) 2016-02-02 2018-03-30 北京地平线机器人技术研发有限公司 基于麦克阵列的声音定位装置和方法
US9721582B1 (en) 2016-02-03 2017-08-01 Google Inc. Globally optimized least-squares post-filtering for speech enhancement
US10537300B2 (en) 2016-04-25 2020-01-21 Wisconsin Alumni Research Foundation Head mounted microphone array for tinnitus diagnosis
USD819607S1 (en) 2016-04-26 2018-06-05 Samsung Electronics Co., Ltd. Microphone
US9851938B2 (en) 2016-04-26 2017-12-26 Analog Devices, Inc. Microphone arrays and communication systems for directional reception
DK3509325T3 (da) 2016-05-30 2021-03-22 Oticon As Høreapparat, der omfatter en stråleformerfiltreringsenhed, der omfatter en udglatningsenhed
GB201609784D0 (en) 2016-06-03 2016-07-20 Craven Peter G And Travis Christopher Microphone array providing improved horizontal directivity
US9659576B1 (en) 2016-06-13 2017-05-23 Biamp Systems Corporation Beam forming and acoustic echo cancellation with mutual adaptation control
ITUA20164622A1 (it) 2016-06-23 2017-12-23 St Microelectronics Srl Procedimento di beamforming basato su matrici di microfoni e relativo apparato
EP3488439B1 (en) 2016-07-22 2021-08-11 Dolby Laboratories Licensing Corporation Network-based processing and distribution of multimedia content of a live musical performance
USD841589S1 (en) 2016-08-03 2019-02-26 Gedia Gebrueder Dingerkus Gmbh Housings for electric conductors
CN106251857B (zh) 2016-08-16 2019-08-20 青岛歌尔声学科技有限公司 声源方向判断装置、方法及麦克风指向性调节系统、方法
US9628596B1 (en) 2016-09-09 2017-04-18 Sorenson Ip Holdings, Llc Electronic device including a directional microphone
US10454794B2 (en) 2016-09-20 2019-10-22 Cisco Technology, Inc. 3D wireless network monitoring using virtual reality and augmented reality
US9794720B1 (en) 2016-09-22 2017-10-17 Sonos, Inc. Acoustic position measurement
JP1580363S (zh) 2016-09-27 2017-07-03
EP3520437A1 (en) 2016-09-29 2019-08-07 Dolby Laboratories Licensing Corporation Method, systems and apparatus for determining audio representation(s) of one or more audio sources
US10475471B2 (en) 2016-10-11 2019-11-12 Cirrus Logic, Inc. Detection of acoustic impulse events in voice applications using a neural network
US9930448B1 (en) 2016-11-09 2018-03-27 Northwestern Polytechnical University Concentric circular differential microphone arrays and associated beamforming
US9980042B1 (en) 2016-11-18 2018-05-22 Stages Llc Beamformer direction of arrival and orientation analysis system
US10827263B2 (en) 2016-11-21 2020-11-03 Harman Becker Automotive Systems Gmbh Adaptive beamforming
GB2557219A (en) 2016-11-30 2018-06-20 Nokia Technologies Oy Distributed audio capture and mixing controlling
USD811393S1 (en) 2016-12-28 2018-02-27 Samsung Display Co., Ltd. Display device
CN110169041B (zh) 2016-12-30 2022-03-22 哈曼贝克自动系统股份有限公司 一种声回波消除的方法和系统
US10552014B2 (en) 2017-01-10 2020-02-04 Cast Group Of Companies Inc. Systems and methods for tracking and interacting with zones in 3D space
US10021515B1 (en) 2017-01-12 2018-07-10 Oracle International Corporation Method and system for location estimation
US10367948B2 (en) 2017-01-13 2019-07-30 Shure Acquisition Holdings, Inc. Post-mixing acoustic echo cancellation systems and methods
US10097920B2 (en) 2017-01-13 2018-10-09 Bose Corporation Capturing wide-band audio using microphone arrays and passive directional acoustic elements
CN106851036B (zh) 2017-01-20 2019-08-30 广州广哈通信股份有限公司 一种共线语音会议分散混音系统
US20180210704A1 (en) 2017-01-26 2018-07-26 Wal-Mart Stores, Inc. Shopping Cart and Associated Systems and Methods
US10440469B2 (en) 2017-01-27 2019-10-08 Shure Acquisitions Holdings, Inc. Array microphone module and system
US10389885B2 (en) 2017-02-01 2019-08-20 Cisco Technology, Inc. Full-duplex adaptive echo cancellation in a conference endpoint
CN110235428B (zh) 2017-02-02 2022-02-25 伯斯有限公司 会议室音频设置
TWI681387B (zh) 2017-03-09 2020-01-01 美商艾孚諾亞公司 聲學處理網路及用於即時聲學處理之方法
USD860319S1 (en) 2017-04-21 2019-09-17 Any Pte. Ltd Electronic display unit
US20180313558A1 (en) 2017-04-27 2018-11-01 Cisco Technology, Inc. Smart ceiling and floor tiles
CN107221336B (zh) 2017-05-13 2020-08-21 深圳海岸语音技术有限公司 一种增强目标语音的装置及其方法
US10165386B2 (en) 2017-05-16 2018-12-25 Nokia Technologies Oy VR audio superzoom
CN110663258B (zh) 2017-05-19 2021-08-03 铁三角有限公司 语音信号处理装置
US10153744B1 (en) 2017-08-02 2018-12-11 2236008 Ontario Inc. Automatically tuning an audio compressor to prevent distortion
US11798544B2 (en) 2017-08-07 2023-10-24 Polycom, Llc Replying to a spoken command
KR102478951B1 (ko) 2017-09-04 2022-12-20 삼성전자주식회사 비선형 특성을 갖는 오디오 필터를 이용하여 오디오 신호를 처리하는 방법 및 장치
US9966059B1 (en) 2017-09-06 2018-05-08 Amazon Technologies, Inc. Reconfigurale fixed beam former using given microphone array
US20210098014A1 (en) 2017-09-07 2021-04-01 Mitsubishi Electric Corporation Noise elimination device and noise elimination method
USD883952S1 (en) 2017-09-11 2020-05-12 Clean Energy Labs, Llc Audio speaker
EP4216016A1 (en) 2017-09-27 2023-07-26 Engineered Controls International, LLC Combination regulator valve
USD888020S1 (en) 2017-10-23 2020-06-23 Raven Technology (Beijing) Co., Ltd. Speaker cover
US20190166424A1 (en) 2017-11-28 2019-05-30 Invensense, Inc. Microphone mesh network
USD860997S1 (en) 2017-12-11 2019-09-24 Crestron Electronics, Inc. Lid and bezel of flip top unit
CN108172235B (zh) 2017-12-26 2021-05-14 南京信息工程大学 基于维纳后置滤波的ls波束形成混响抑制方法
US10979805B2 (en) 2018-01-04 2021-04-13 Stmicroelectronics, Inc. Microphone array auto-directive adaptive wideband beamforming using orientation information from MEMS sensors
USD864136S1 (en) 2018-01-05 2019-10-22 Samsung Electronics Co., Ltd. Television receiver
US10720173B2 (en) 2018-02-21 2020-07-21 Bose Corporation Voice capture processing modified by back end audio processing state
JP7022929B2 (ja) 2018-02-26 2022-02-21 パナソニックＩｐマネジメント株式会社 ワイヤレスマイクシステム、受信機及び無線同期方法
USD857873S1 (en) 2018-03-02 2019-08-27 Panasonic Intellectual Property Management Co., Ltd. Ceiling ventilation fan
US10566008B2 (en) 2018-03-02 2020-02-18 Cirrus Logic, Inc. Method and apparatus for acoustic echo suppression
CN208190895U (zh) 2018-03-23 2018-12-04 阿里巴巴集团控股有限公司 拾音模组、电子设备及贩卖机
US20190295540A1 (en) 2018-03-23 2019-09-26 Cirrus Logic International Semiconductor Ltd. Voice trigger validator
CN108510987B (zh) 2018-03-26 2020-10-23 北京小米移动软件有限公司 语音处理方法及装置
EP3553968A1 (en) 2018-04-13 2019-10-16 Peraso Technologies Inc. Single-carrier wideband beamforming method and system
WO2019231630A1 (en) 2018-05-31 2019-12-05 Shure Acquisition Holdings, Inc. Augmented reality microphone pick-up pattern visualization
WO2019232235A1 (en) 2018-05-31 2019-12-05 Shure Acquisition Holdings, Inc. Systems and methods for intelligent voice activation for auto-mixing
EP3804356A1 (en) 2018-06-01 2021-04-14 Shure Acquisition Holdings, Inc. Pattern-forming microphone array
US11297423B2 (en) 2018-06-15 2022-04-05 Shure Acquisition Holdings, Inc. Endfire linear array microphone
JP7431757B2 (ja) 2018-06-15 2024-02-15 シュアー アクイジッション ホールディングス インコーポレイテッド 統合会議プラットフォームのためのシステム及び方法
US10210882B1 (en) 2018-06-25 2019-02-19 Biamp Systems, LLC Microphone array with automated adaptive beam tracking
EP4093055A1 (en) 2018-06-25 2022-11-23 Oticon A/s A hearing device comprising a feedback reduction system
CN109087664B (zh) 2018-08-22 2022-09-02 中国科学技术大学 语音增强方法
CN112889296A (zh) 2018-09-20 2021-06-01 舒尔获得控股公司 用于阵列麦克风的可调整的波瓣形状
US11109133B2 (en) 2018-09-21 2021-08-31 Shure Acquisition Holdings, Inc. Array microphone module and system
JP7334406B2 (ja) 2018-10-24 2023-08-29 ヤマハ株式会社 アレイマイクロフォンおよび収音方法
US10972835B2 (en) 2018-11-01 2021-04-06 Sennheiser Electronic Gmbh & Co. Kg Conference system with a microphone array system and a method of speech acquisition in a conference system
US10887467B2 (en) 2018-11-20 2021-01-05 Shure Acquisition Holdings, Inc. System and method for distributed call processing and audio reinforcement in conferencing environments
CN109727604B (zh) 2018-12-14 2023-11-10 上海蔚来汽车有限公司 用于语音识别前端的频域回声消除方法及计算机储存介质
US10959018B1 (en) 2019-01-18 2021-03-23 Amazon Technologies, Inc. Method for autonomous loudspeaker room adaptation
CN109862200B (zh) 2019-02-22 2021-02-12 北京达佳互联信息技术有限公司 语音处理方法、装置、电子设备及存储介质
US11070913B2 (en) 2019-02-27 2021-07-20 Crestron Electronics, Inc. Millimeter wave sensor used to optimize performance of a beamforming microphone array
CN110010147B (zh) 2019-03-15 2021-07-27 厦门大学 一种麦克风阵列语音增强的方法和系统
TW202044236A (zh) 2019-03-21 2020-12-01 美商舒爾獲得控股公司 具有抑制功能的波束形成麥克風瓣之自動對焦、區域內自動對焦、及自動配置
WO2020191354A1 (en) 2019-03-21 2020-09-24 Shure Acquisition Holdings, Inc. Housings and associated design features for ceiling array microphones
US11558693B2 (en) 2019-03-21 2023-01-17 Shure Acquisition Holdings, Inc. Auto focus, auto focus within regions, and auto placement of beamformed microphone lobes with inhibition and voice activity detection functionality
USD924189S1 (en) 2019-04-29 2021-07-06 Lg Electronics Inc. Television receiver
USD900072S1 (en) 2019-05-15 2020-10-27 Shure Acquisition Holdings, Inc. Housing for a ceiling array microphone
USD900073S1 (en) 2019-05-15 2020-10-27 Shure Acquisition Holdings, Inc. Housing for a ceiling array microphone
USD900071S1 (en) 2019-05-15 2020-10-27 Shure Acquisition Holdings, Inc. Housing for a ceiling array microphone
USD900070S1 (en) 2019-05-15 2020-10-27 Shure Acquisition Holdings, Inc. Housing for a ceiling array microphone
USD900074S1 (en) 2019-05-15 2020-10-27 Shure Acquisition Holdings, Inc. Housing for a ceiling array microphone
US11127414B2 (en) 2019-07-09 2021-09-21 Blackberry Limited System and method for reducing distortion and echo leakage in hands-free communication
US10984815B1 (en) 2019-09-27 2021-04-20 Cypress Semiconductor Corporation Techniques for removing non-linear echo in acoustic echo cancellers
KR102647154B1 (ko) 2019-12-31 2024-03-14 삼성전자주식회사 디스플레이 장치

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE775247A (fr) * 1970-11-16 1972-03-01 Western Electric Co Montage suppresseur d'echo pour circuits de transmission
CN1204425A (zh) * 1995-12-18 1999-01-06 艾利森电话股份有限公司 使用残留信号中功率估算的回声消除的方法和设备
AU2004200802A1 (en) * 1998-07-13 2004-03-25 Telefonaktiebolaget Lm Ericsson (Publ) Digital adaptive filter and acoustic echo canceller using the same
KR20040083109A (ko) * 2003-03-21 2004-10-01 (주)씨앤에스 테크놀로지 간섭신호에 강인한 음향 반향 제거장치
JP2006067127A (ja) * 2004-08-25 2006-03-09 Matsushita Electric Works Ltd 残響除去方法及びその装置
JP2006148330A (ja) * 2004-11-17 2006-06-08 Nec Corp エコーキャンセラ、回線交換システム及びエコーキャンセリング方法
US20080175375A1 (en) * 2007-01-24 2008-07-24 Oki Electric Industry Co., Ltd. Echo canceler and echo canceling method
CN101388213A (zh) * 2008-07-03 2009-03-18 天津大学 一种预回声控制方法
US20140307882A1 (en) * 2013-04-11 2014-10-16 Broadcom Corporation Acoustic echo cancellation with internal upmixing
GB201316598D0 (en) * 2013-09-18 2013-10-30 Hellosoft Inc Acoustic echo cancellation
CN106233751A (zh) * 2014-04-14 2016-12-14 雅马哈株式会社 声音发射和采集装置及声音发射和采集方法
WO2016146316A1 (en) * 2015-03-18 2016-09-22 Qualcomm Technologies International, Ltd. Structure for multi-microphone speech einhancement system
US20160295279A1 (en) * 2015-04-03 2016-10-06 The Nielsen Company (Us), Llc Methods and apparatus to determine a state of a media presentation device
US20180213281A1 (en) * 2015-04-03 2018-07-26 The Nielsen Company (Us), Llc Methods and apparatus to determine a state of a media presentation device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112583431A (zh) * 2019-09-29 2021-03-30 瑞昱半导体股份有限公司 接收器及相关的信号处理方法
CN112583431B (zh) * 2019-09-29 2022-05-17 瑞昱半导体股份有限公司 接收器及相关的信号处理方法
CN111798827A (zh) * 2020-07-07 2020-10-20 上海立可芯半导体科技有限公司 回声消除方法、装置、系统和计算机可读介质

Also Published As

Publication number Publication date
US11477327B2 (en) 2022-10-18
KR102432300B1 (ko) 2022-08-11
US20180205830A1 (en) 2018-07-19
JP2020507955A (ja) 2020-03-12
JP7127032B2 (ja) 2022-08-29
TW201830382A (zh) 2018-08-16
EP3568854B1 (en) 2020-12-30
TWI749144B (zh) 2021-12-11
KR20190105619A (ko) 2019-09-17
EP3568854A1 (en) 2019-11-20
US20200228663A1 (en) 2020-07-16
WO2018132465A1 (en) 2018-07-19
US20230164274A1 (en) 2023-05-25
US10367948B2 (en) 2019-07-30
CN110199351B (zh) 2024-04-12

Similar Documents

Publication Publication Date Title
CN110199351A (zh) 混合后回声消除系统及方法
US9591422B2 (en) Method and apparatus for audio interference estimation
JP6243536B2 (ja) エコー打ち消し
US20130083934A1 (en) Processing Audio Signals
US20110110526A1 (en) Acoustic echo canceller and acoustic echo cancellation method
US20160073209A1 (en) Maintaining spatial stability utilizing common gain coefficient
JP7325445B2 (ja) ギャップ信頼度を用いた背景雑音推定
US9099973B2 (en) Sound field spatial stabilizer with structured noise compensation
US9743179B2 (en) Sound field spatial stabilizer with structured noise compensation
JP2012114826A (ja) 音響補正装置、及び音響補正方法
EP2816818B1 (en) Sound field spatial stabilizer with echo spectral coherence compensation
CA2840730C (en) Maintaining spatial stability utilizing common gain coefficient
KR101306868B1 (ko) 미확인 시스템 모델링 방법 및 이를 이용한 하울링 제거 오디오 시스템
US20230065067A1 (en) Mask non-linear processor for acoustic echo cancellation
WO2022202012A1 (ja) エコー抑圧装置、エコー抑圧方法及びエコー抑圧プログラム
EP2816817A1 (en) Sound field spatial stabilizer with spectral coherence compensation
JP2011040831A (ja) デジタルノイズキャンセルヘッドホン及びデジタルノイズキャンセル方法
EP2816816B1 (en) Sound field spatial stabilizer with structured noise compensation
JP2008224815A (ja) カラオケ装置
JP2010010988A (ja) 暗騒音抑圧・エコー消去装置、方法及びプログラム

Legal Events

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