MULTI-MICROPHONE FEEDFORWARD ACTIVE NOISE CANCELLATION
    1.
    发明申请
    MULTI-MICROPHONE FEEDFORWARD ACTIVE NOISE CANCELLATION 审中-公开
    多麦克风前馈有源噪声消除

    公开(公告)号:WO2017096174A1

    公开(公告)日:2017-06-08

    申请号:PCT/US2016/064635

    申请日:2016-12-02

    Abstract: Systems and methods for active noise cancellation are provided. An example method includes receiving at least two reference signals associated with at least two reference positions. Each of the at least two reference signals includes at least one captured acoustic sound representing an unwanted noise. The reference signals are filtered by individual filters to obtain filtered signals. The filtered signals are combined to obtain a feedforward signal. The feedforward signal is played back to reduce the unwanted noise at a pre-determined space location. The individual filters are determined based on linear combinations of at least two transfer functions. Each of the at least two transfer functions is associated with one of the reference positions. In certain embodiments, the at least two reference signals are captured by at least two feedforward microphones.

    Abstract translation: 提供了用于主动噪声消除的系统和方法。 示例方法包括接收与至少两个参考位置相关联的至少两个参考信号。 至少两个参考信号中的每一个包括代表不希望有的噪声的至少一个捕获的声音。 参考信号被各个滤波器滤波以获得滤波后的信号。 滤波的信号被组合以获得前馈信号。 回放前馈信号以减少预定空间位置处的不需要的噪声。 各个滤波器是基于至少两个传递函数的线性组合来确定的。 至少两个传递函数中的每一个与参考位置中的一个相关联。 在某些实施例中,至少两个参考信号由至少两个前馈麦克风捕获。

    信号処理装置、信号処理方法及びコンピュータプログラム
    2.
    发明申请
    信号処理装置、信号処理方法及びコンピュータプログラム 审中-公开
    信号处理装置,信号处理方法和计算机程序

    公开(公告)号:WO2016059878A1

    公开(公告)日:2016-04-21

    申请号:PCT/JP2015/073820

    申请日:2015-08-25

    Abstract: 【課題】ノイズキャンセル信号を生成するリソースを有効に使用することが可能な信号処理装置を提供する。 【解決手段】入力される第1音声信号及びマイクで収音された音に基づく第2音声信号を解析する信号解析部と、前記第2音声信号をキャンセルするためのキャンセル信号を生成するキャンセル処理部と、前記信号解析部の解析の結果に基づいて前記キャンセル処理部で用いられる制御パラメータを生成するパラメータ生成部と、を備える、信号処理装置が提供される。

    Abstract translation: [问题]提供一种可以有效地利用资源产生噪声消除信号的信号处理装置。 [解决方案]提供了一种信号处理装置,该信号处理装置具有:用于分析输入的第一声音信号的信号分析单元和基于由麦克风拾取的声音的第二声音信号; 消除处理单元,用于产生用于消除第二声音信号的抵消信号; 以及参数生成单元,用于根据信号分析单元的分析结果生成由取消处理单元使用的控制参数。

    AIRCRAFT PREDICTIVE ACTIVE NOISE CANCELLATION
    3.
    发明申请
    AIRCRAFT PREDICTIVE ACTIVE NOISE CANCELLATION 审中-公开
    飞机预测主动噪声消除

    公开(公告)号:WO2014143899A1

    公开(公告)日:2014-09-18

    申请号:PCT/US2014/028066

    申请日:2014-03-14

    Abstract: An improved user experience is provided for passengers of a transportation vessel, such as an airplane. A passengers experience is enhanced by allowing the passenger to enjoy media provided by an entertainment device without ambient noise. When the passenger requests accesses to a media item through the entertainment device, a microphone in the entertainment system generates an ambient noise signal based on captured ambient noise. A noise cancellation device generates a predictive noise cancelling signal based on the ambient noise signal. To generate the predictive noise cancelling signal, the noise cancellation device inverts the ambient noise signal and applies a predictive phase shift to the signal based on an estimated distance between the microphone and the passengers ears. The noise cancelling signal is mixed with audio of the media item.

    Abstract translation: 为诸如飞机的运输船的乘客提供改进的用户体验。 通过允许乘客享受由娱乐设备提供的媒体而没有环境噪声,增强乘客体验。 当乘客通过娱乐设备请求访问媒体项目时,娱乐系统中的麦克风基于所捕获的环境噪声产生环境噪声信号。 噪声消除装置基于环境噪声信号产生预测噪声消除信号。 为了产生预测噪声消除信号,噪声消除装置反转环境噪声信号,并且基于麦克风和乘客耳朵之间的估计距离向信号施加预测相移。 噪声消除信号与媒体项目的音频混合。

    信号処理装置及び信号処理方法
    4.
    发明申请
    信号処理装置及び信号処理方法 审中-公开
    信号处理装置和信号处理方法

    公开(公告)号:WO2010116925A1

    公开(公告)日:2010-10-14

    申请号:PCT/JP2010/055691

    申请日:2010-03-30

    Abstract: 【課題】ユーザが常に良好な聴取環境で楽曲等を聴取することが可能な信号処理装置を提供すること。 【解決手段】ノイズ信号の周波数成分を解析するノイズ解析部と、解析結果に基づいてノイズ信号に対する所定のフィルタ処理を実行する複数のフィルタ処理部と、ノイズ解析部の解析結果の変化に応じて複数のフィルタ処理部の出力の合成比率を時変的に変化させる出力制御部と、を備え、ノイズ解析部の解析結果に変化が生じた場合に、一のフィルタ処理部は、ノイズ信号に対する所定のフィルタ処理を実行している他のフィルタ処理部とは異なる特性によって所定のフィルタ処理を開始し、出力制御部は、ノイズ解析部の解析結果の変化に応じて、他のフィルタ処理部及び一のフィルタ処理部の出力の合成比率を時変的に変化させ、出力を他のフィルタ処理部から一のフィルタ処理部へ切り替える、信号処理装置が提供される。

    Abstract translation: 提供了一种信号处理装置,用户可以在良好的声学环境中始终听到音乐等。 信号处理装置包括分析噪声信号的频率分量的噪声分析单元,基于分析结果对噪声信号进行规定的滤波处理的多个滤波单元,以及时间上变化合成的输出控制单元 根据噪声分析单元的合成结果的变化,多个滤波单元的输出的速率。 当噪声分析单元的分析结果改变时,滤波单元之一根据与对噪声信号执行预定滤波操作的其它滤波单元不同的特性开始预定滤波操作,并且输出控制单元在时间上 根据噪声分析单元的分析结果的变化,改变其他滤波单元和一个滤波单元的输出的合成速率,并且输出控制单元将其它滤波单元的输出切换到一个滤波单元 过滤单元

    COMBINED ACTIVE NOISE CANCELLATION AND NOISE COMPENSATION IN HEADPHONE
    7.
    发明申请
    COMBINED ACTIVE NOISE CANCELLATION AND NOISE COMPENSATION IN HEADPHONE 审中-公开
    组合主动噪声消除和噪声信号在耳机中的补偿

    公开(公告)号:WO2016054180A1

    公开(公告)日:2016-04-07

    申请号:PCT/US2015/053176

    申请日:2015-09-30

    Abstract: The disclosure relates to combined active noise cancellation and noise compensation in a headphone. An audio processing device includes a selector and a noise compensation unit. The selector can select one of a plurality of first transfer functions based on at least one feature of at least one of an external noise and a content audio signal representing a sound to be reproduced through the headphone. The noise compensation unit can compute a second audio signal by applying the selected first transfer function to a first audio signal, and derive gains for the noise compensation at least based on the second audio signal. The at least one feature can be used to distinguish at least two of the first transfer functions. Each of the first transfer functions can transform the first audio signal to the second audio signal which is assumed as representing a version of the sound represented by the first audio signal, which arrives at an eardrum of a listener wearing the headphone. The first audio signal is one of a noise signal representing the external noise and the content audio signal.

    Abstract translation: 本公开涉及耳机中的组合有源噪声消除和噪声补偿。 音频处理装置包括选择器和噪声补偿单元。 选择器可以基于外部噪声和内容音频信号中的至少一个特征来选择多个第一传递函数中的一个,该特征表示通过耳机再现的声音。 噪声补偿单元可以通过将所选择的第一传递函数应用于第一音频信号来计算第二音频信号,并且至少基于第二音频信号导出用于噪声补偿的增益。 该至少一个特征可用于区分至少两个第一传递函数。 第一传递函数中的每一个可以将第一音频信号变换为第二音频信号,该第二音频信号被假定为表示由第一音频信号表示的声音的版本,该第一音频信号到达佩戴耳机的收听者的鼓膜。 第一音频信号是表示外部噪声和内容音频信号的噪声信号之一。

    DYNAMIC HEARING PROTECTION DEVICE AND METHOD
    8.
    发明申请
    DYNAMIC HEARING PROTECTION DEVICE AND METHOD 审中-公开
    动态听力保护装置和方法

    公开(公告)号:WO2011033136A8

    公开(公告)日:2011-05-26

    申请号:PCT/EP2011050181

    申请日:2011-01-07

    Abstract: The invention relates to a dynamic hearing protection device to be worn completely in a user's ear canal (10), comprising: a lateral part (32, 36) and a medial part (34, 36) flexibly connected in such a manner that the lateral part and the medial part can bend relative to each other so as to follow the shape of the ear canal, wherein the medial part is to be inserted at least in part into the bony part (16) of the ear canal and comprises an acoustic damping element (70) at its periphery which is adapted to touch the wall (18) of the bony part of the ear canal for attenuating sound impinging on the hearing protection device, wherein the lateral part includes a microphone arrangement (42) including a microphone port (41) for capturing audio signals from ambient sound, wherein the microphone port is to be located at least 1 mm inside the ear canal, wherein the hearing protection device includes a non-replaceable battery (48) and an audio signal processing unit (44) for processing the audio signals captured by the microphone assembly, wherein the medial part includes a loudspeaker (52) for stimulating the user's hearing according to the processed audio signals, and wherein the audio signal processing unit is adapted to provide at least for an attenuation mode in which the gain applied to the audio signals is less than the mechanical acoustic damping provided by the hearing protection device when worn in the ear canal.

    Abstract translation: 本发明涉及一种完全佩戴在使用者耳道(10)中的动态听力保护装置,包括:侧部(32,36)和中间部分(34,36),其以这样的方式柔性连接, 部分和内侧部分可以相对于彼此弯曲以遵循耳道的形状,其中内侧部分将至少部分地插入到耳道的骨部分(16)中并且包括声阻尼 (70),其适于接触耳道的骨部分的壁(18),以衰减撞击在听力保护装置上的声音,其中所述侧部包括麦克风装置(42),所述麦克风装置包括麦克风端口 (41),用于从环境声音捕获音频信号,其中所述麦克风端口将位于耳道内至少1mm处,其中所述听力保护装置包括不可更换电池(48)和音频信号处理单元(44) )用于处理奥迪 o由所述麦克风组件捕获的信号,其中所述中间部分包括用于根据所处理的音频信号来刺激用户的听力的扬声器(52),并且其中所述音频信号处理单元适于至少提供衰减模式, 施加于音频信号的增益小于戴在耳道中时由听力保护装置提供的机械声学阻尼。

    SYSTEM AND METHOD FOR NOISE CANCELING IN A PORTABLE MOBILE COMMUNICATION DEVICE COUPLED WITH A HEADSET ASSEMBLY AND CORRESPONDING COMPUTER PROGRAM PRODUCT
    9.
    发明申请
    SYSTEM AND METHOD FOR NOISE CANCELING IN A PORTABLE MOBILE COMMUNICATION DEVICE COUPLED WITH A HEADSET ASSEMBLY AND CORRESPONDING COMPUTER PROGRAM PRODUCT 审中-公开
    用于在与头戴式耳机组件和相应的计算机程序产品耦合的便携式移动通信设备中用于消除噪音的系统和方法

    公开(公告)号:WO2008014018A1

    公开(公告)日:2008-01-31

    申请号:PCT/US2007/063354

    申请日:2007-03-12

    Inventor: MILLER, Douglas

    Abstract: Disclosed is a system, method, and computer program product for canceling ambient noise in a portable mobile communications device 100 that is coupled with a standard non-noise canceling headset assembly 105, 150. The portable mobile communications device 100 receives detected ambient noise from the headset assembly microphone 115, 155 and creates a noise canceling ambient noise sound wave that is 180° out of phase with the ambient noise sound wave 330, 440. The noise canceling ambient noise sound wave is then combined 340, 440 with an intended sound wave such as music or speech. The combined noise canceling ambient noise sound wave and intended sound wave are then forwarded 350, 450 to the headset assembly such that the noise canceling ambient noise sound wave negates the ambient noise present at the headset assembly during playback of the intended sound wave. Noise canceling can be achieved using hardware filters 230 or via a noise canceling software application 240 within the portable mobile communications device 100.

    Abstract translation: 公开了用于消除便携式移动通信设备100中的环境噪声的系统,方法和计算机程序产品,便携式移动通信设备100与标准非降噪耳机组件105,150耦合。便携式移动通信 设备100从头戴式耳机组件麦克风115,155接收检测到的环境噪声并且创建180度的噪声消除环境噪声声波。 与环境噪声声波330,440异相。然后将噪声消除环境噪声声波与340,440与诸如音乐或语音的预期声波组合。 然后将组合的噪声消除环境噪声声波和预期声波转发350,450至头戴式耳机组件,使得噪声消除环境噪声声波在播放预期声波期间抵消头戴式耳机组件处存在的环境噪声。 噪声消除可以使用硬件滤波器230或通过便携式移动通信设备100内的噪声消除软件应用程序240来实现。

    HEADSET AUDIO BYPASS APPARATUS AND METHOD
    10.
    发明申请
    HEADSET AUDIO BYPASS APPARATUS AND METHOD 审中-公开
    耳机音频旁路设备和方法

    公开(公告)号:WO2006076369A1

    公开(公告)日:2006-07-20

    申请号:PCT/US2006/000829

    申请日:2006-01-10

    Inventor: BEASLEY, Nigel

    Abstract: An apparatus and method provides control over the relative level of audio and background sound for an audio device such as a headset or headphones. An input sound transducer (312) can be provided and configured to convert ambient acoustical pressure into an electrical background signal representing the background sound. Noise cancellation circuitry create a cancellation signal that is the inverse of the electrical background signal. A summing component is coupled to the noise cancellation component and combines the cancellation signal with an audio signal representing audio program content and provides the combined electrical signal to an output sound transducer (332) . A controller is coupled to the noise cancellation component and is configured to control the level of a cancellation signal relative to the audio signal, thereby controlling the mix of cancellation signal and audio signal reaching the output sound transducer (332) .

    Abstract translation: 一种装置和方法提供对诸如耳机或耳机之类的音频设备的音频和背景声音的相对水平的控制。 输入声音传感器(312)可以被提供和配置成将环境声压转换成表示背景声音的电背景信号。 噪声消除电路产生与电气背景信号相反的抵消信号。 加法分量被耦合到噪声消除分量,并将消除信号与表示音频节目内容的音频信号组合,并将组合的电信号提供给输出声音传感器(332)。 控制器耦合到噪声消除部件,并且被配置为控制相对于音频信号的消​​除信号的电平,从而控制到达输出声音传感器(332)的消除信号和音频信号的混合。

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