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公开(公告)号：US09646596B2
公开(公告)日：2017-05-09
申请号：US14762482
申请日：2014-01-21
IPC分类号： G10K11/16 , G10K11/175 , G10K11/178
CPC分类号： G10K11/175 , G10K11/178 , G10K11/17823 , G10K11/17835 , G10K2210/1282 , G10K2210/3016 , G10K2210/3039
摘要： In an active noise reduction device, in order to solve this problem, a control block determines a level of a reference signal detected by a level detection unit. If determining that the level of the reference signal is small, the control block decreases a level of a cancel signal. This operation suppresses generation of an abnormal sound even if a level of a noise is small.
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2.发明授权Hybrid adaptive noise cancellation system with filtered error microphone signal 有权混合自适应噪声消除系统，滤波误差麦克风信号公开(公告)号：US09578415B1
公开(公告)日：2017-02-21
申请号：US14832585
申请日：2015-08-21
发明人： Dayong Zhou , Yang Lu , Ning Li , Nitin Kwatra , Antonio J. Miller
IPC分类号： H04R3/00 , G10K11/178 , G10K11/16
CPC分类号： G10K11/178 , G10K11/16 , G10K11/17817 , G10K11/17879 , G10K11/17885 , G10K2210/108 , G10K2210/1081 , G10K2210/1082 , G10K2210/3017 , G10K2210/3022 , G10K2210/3026 , G10K2210/3027 , G10K2210/3035 , G10K2210/3039 , G10K2210/3045 , G10K2210/3049 , G10K2210/3053 , G10K2210/3055 , G10K2210/3056 , G10K2210/509 , H04R1/1083 , H04R3/002 , H04R3/005 , H04R2410/05 , H04R2460/01 , H04R2499/11
摘要： In accordance with systems and methods of the present disclosure, an adaptive noise cancellation system may include an alignment filter configured to correct misalignment of a reference microphone signal and an error microphone signal by generating a misalignment correction signal.
摘要翻译： 根据本公开的系统和方法，自适应噪声消除系统可以包括对准滤波器，其被配置为通过产生未对准校正信号来校正参考麦克风信号和误差麦克风信号的未对准。
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公开(公告)号：US09164805B2
公开(公告)日：2015-10-20
申请号：US14080372
申请日：2013-11-14
IPC分类号： G06F9/50 , H04L12/911 , G06F1/32 , H05K7/20
CPC分类号： G06F9/5027 , G06F1/3206 , G10K2210/3039 , H04L41/0896 , H04L43/08 , H04L47/125 , H04L47/70 , H05K7/20709
摘要： A computer-implemented method obtains a correlation between percent utilization and noise level for a plurality of compute node types, and obtains an inventory of a plurality of compute nodes in a cluster, wherein the inventory identifies each compute node by a compute node type, and wherein the plurality of compute nodes includes two or more compute node types. The method further includes determining a percent utilization of each compute node, and, for each compute node of an identified compute node type, determining a noise level using the determined percent utilization for the compute node as input into the correlation between percent utilization and noise level for the identified compute node type. An overall noise level in the cluster is calculated using the noise level determined for each compute node, and workload is distributed among the plurality of compute nodes to reduce the calculated overall noise level in the cluster.
摘要翻译： 计算机实现的方法获得多个计算节点类型的百分比利用率和噪声水平之间的相关性，并且获得群集中的多个计算节点的清单，其中所述库存通过计算节点类型标识每个计算节点，以及 其中所述多个计算节点包括两个或多个计算节点类型。 该方法还包括确定每个计算节点的百分比利用率，并且对于所识别的计算节点类型的每个计算节点，使用所确定的计算节点百分比利用率来确定噪声水平，作为输入百分比利用率和噪声水平之间的相关性 用于识别的计算节点类型。 使用为每个计算节点确定的噪声电平来计算集群中的总体噪声电平，并且在多个计算节点之间分配工作负载以减少所计算的集群中的整体噪声电平。
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公开(公告)号：US20150134825A1
公开(公告)日：2015-05-14
申请号：US14080372
申请日：2013-11-14
IPC分类号： H04L12/911
CPC分类号： G06F9/5027 , G06F1/3206 , G10K2210/3039 , H04L41/0896 , H04L43/08 , H04L47/125 , H04L47/70 , H05K7/20709
摘要： A computer-implemented method obtains a correlation between percent utilization and noise level for a plurality of compute node types, and obtains an inventory of a plurality of compute nodes in a cluster, wherein the inventory identifies each compute node by a compute node type, and wherein the plurality of compute nodes includes two or more compute node types. The method further includes determining a percent utilization of each compute node, and, for each compute node of an identified compute node type, determining a noise level using the determined percent utilization for the compute node as input into the correlation between percent utilization and noise level for the identified compute node type. An overall noise level in the cluster is calculated using the noise level determined for each compute node, and workload is distributed among the plurality of compute nodes to reduce the calculated overall noise level in the cluster.
摘要翻译： 计算机实现的方法获得多个计算节点类型的百分比利用率和噪声水平之间的相关性，并且获得群集中的多个计算节点的清单，其中所述库存通过计算节点类型标识每个计算节点，以及 其中所述多个计算节点包括两个或多个计算节点类型。 该方法还包括确定每个计算节点的百分比利用率，并且对于所识别的计算节点类型的每个计算节点，使用所确定的计算节点百分比利用率来确定噪声水平，作为输入百分比利用率和噪声水平之间的相关性 用于识别的计算节点类型。 使用为每个计算节点确定的噪声电平来计算集群中的总体噪声电平，并且在多个计算节点之间分配工作负载以减少所计算的集群中的整体噪声电平。
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公开(公告)号：US08848937B2
公开(公告)日：2014-09-30
申请号：US13894149
申请日：2013-05-14
发明人： Toshio Inoue , Kosuke Sakamoto
IPC分类号： A61F11/06 , G10K11/16 , G10K11/178
CPC分类号： G10K11/16 , G10K11/17833 , G10K2210/121 , G10K2210/12821 , G10K2210/3039 , G10K2210/503 , G10K2210/511
摘要： An active noise control apparatus includes a first active noise controller for generating a first canceling signal for a first noise type, a second active noise controller for generating a second canceling signal for a second noise type that is different from the first noise type, a mixer for mixing the first canceling signal and the second canceling signal into a mixed canceling signal, a canceling sound output unit for outputting a canceling sound based on the mixed canceling signal, and an amplitude suppressor for suppressing the amplitude of the second canceling signal depending on the amplitude of the first canceling signal.
摘要翻译： 有源噪声控制装置包括：第一有源噪声控制器，用于产生第一噪声类型的第一消除信号;第二有源噪声控制器，用于产生与第一噪声类型不同的第二噪声类型的第二抵消信号;混频器 用于将第一抵消信号和第二抵消信号混合成混合抵消信号，基于混合抵消信号输出抵消声音的消除声音输出单元和用于根据该消除信号抑制第二消除信号的振幅的幅度抑制器 第一消除信号的振幅。
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6.发明授权公开(公告)号：US08218782B2
公开(公告)日：2012-07-10
申请号：US12409830
申请日：2009-03-24
申请人： Kohei Asada , Tetsunori Itabashi , Noriyuki Ozawa
发明人： Kohei Asada , Tetsunori Itabashi , Noriyuki Ozawa
CPC分类号： G10K11/17833 , G10K11/17881 , G10K2210/108 , G10K2210/1081 , G10K2210/3039
摘要： A headphone device includes: a sound reproduction unit having a diaphragm which is configured to perform sound reproduction based on a sound signal; a sound pickup unit configured to perform a sound pickup operation; a filtering unit configured to apply filtering to a picked-up sound signal obtained by the sound pickup unit, to give a noise-cancelling signal characteristic; a combining unit configured to combine the picked-up sound signal that has undergone filtering, and a listening sound signal which is inputted separately, to generate a sound signal supplied to the sound reproduction unit; and an abnormality determination unit configured to determine occurrence or non-occurrence of an abnormal sound, on the basis of a result of level detection of a sound signal obtained within a sound signal processing system that includes the filtering unit and the combining unit and is formed between the sound pickup unit and the sound reproduction unit.
摘要翻译： 耳机装置包括：具有隔膜的声音再现单元，被配置为基于声音信号执行声音再现; 声音拾取单元，被配置为执行声音拾取操作; 滤波单元，被配置为对由拾音单元获得的拾取声音信号应用滤波，以给出噪声消除信号特性; 组合单元，被配置为组合经过滤波的拾取声音信号和分别输入的收听声音信号，以产生提供给声音再现单元的声音信号; 以及异常判定单元，其基于在包括所述滤波单元和所述组合单元的声音信号处理系统内获得的声音信号的电平检测结果来确定异常声音的发生或不发生，并形成 在声音拾取单元和声音再现单元之间。
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公开(公告)号：US20110116645A1
公开(公告)日：2011-05-19
申请号：US12941145
申请日：2010-11-08
申请人： Alon Slapak , Yehuda Meiman , Gedalin Konstantin
发明人： Alon Slapak , Yehuda Meiman , Gedalin Konstantin
IPC分类号： H03B29/00
CPC分类号： G10K11/178 , G10K2210/12 , G10K2210/3039 , G10K2210/505
摘要： An Active Noise Control (ANC) for controlling a noise produced by a noise source may include an acoustic sensor (212) to sense a noise pattern and to produce a noise signal corresponding to the sensed noise pattern, an estimator (202) to produce a predicted noise signal by applying an estimation function to the noise signal, and an acoustic transducer (216) to produce a noise destructive pattern based on the predicted noise signal.
摘要翻译： 用于控制由噪声源产生的噪声的有源噪声控制（ANC）可以包括用于感测噪声模式并产生对应于感测到的噪声模式的噪声信号的声学传感器（212），用于产生噪声模式的估计器 通过对噪声信号应用估计函数来预测噪声信号;以及声换能器（216），用于基于预测的噪声信号产生噪声破坏模式。
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公开(公告)号：US20100061564A1
公开(公告)日：2010-03-11
申请号：US12525889
申请日：2008-02-06
IPC分类号： G10K11/16
CPC分类号： H04R1/1083 , G10K11/17833 , G10K11/17881 , G10K11/17885 , G10K2210/1081 , G10K2210/3028 , G10K2210/3039 , G10K2210/503 , H04R5/033
摘要： An adaptive, feed-forward, ambient noise-reduction system includes a reference microphone for generating first electrical signals representing incoming ambient noise, and a connection path including a circuit for inverting these signals and applying them to a loudspeaker directed into the ear of a user. The system also includes an error microphone for generating second electrical signals representative of sound (including that generated by the loudspeaker in response to the inverted first electrical signals) approaching the user's ear. An adaptive electronic filter is provided in the connection path, together with a controller for automatically adjusting one or more characteristics of the filter in response to the first and second electrical signals. The system is configured to constrain the operation of the adaptive filter such that it always conforms to one of a predetermined family of filter responses, thereby restricting the filter to operation within a predetermined and limited set of amplitude and phase characteristics.
摘要翻译： 自适应前馈环境降噪系统包括用于产生表示进入的环境噪声的第一电信号的参考麦克风，以及包括用于反转这些信号的电路的连接路径，并将其应用到定向到用户耳朵的扬声器 。 该系统还包括误差麦克风，用于产生代表用户耳朵的代表声音（包括由扬声器产生的响应于倒置的第一电信号）的第二电信号。 连接路径中提供自适应电子滤波器以及响应于第一和第二电信号自动调整滤波器的一个或多个特性的控制器。 该系统被配置为约束自适应滤波器的操作，使得它总是符合预定的滤波器响应族中的一个，从而将滤波器限制在预定和有限的幅度和相位特性集合内的操作。
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9.发明授权
公开(公告)号：US5706344A
公开(公告)日：1998-01-06
申请号：US626208
申请日：1996-03-29
申请人： Brian M. Finn
发明人： Brian M. Finn
IPC分类号： G10K11/178 , H04M9/08 , H04M9/00 , G10K11/16
CPC分类号： G10K11/1786 , H04M9/082 , G10K2210/108 , G10K2210/3039 , G10K2210/3049 , G10K2210/505
摘要： Robust acoustic echo cancellation in a single-channel integrated audio and intercom system is provided by adapting echo cancellation filters in accordance with an optimized autocorrelation matrix. This is carried out in a modified FIR LMS filter in which the adaptation regressor signal is formed by a combination of one or more of the received voice signal, the received audio signal, and/or a random noise signal. In a SISO system, it is usually desirable to shelter the regressor signal from tonal components such as voice signals. In a multiple-channel system, it is usually desirable to shelter regressor signals for a particular channel from acoustic components that are likely to be correlated to acoustic components in other parts of the system and are likely to affect that particular channel. In multi-channel applications, it is therefore usually desirable to shelter regressor signals from audio signals.
摘要翻译： 通过根据优化的自相关矩阵适配回波消除滤波器来提供单通道集成音频和对讲系统中的鲁棒声学回波消除。 这在经修改的FIR LMS滤波器中进行，其中自适应回归信号由接收到的语音信号，接收的音频信号和/或随机噪声信号中的一个或多个的组合形成。 在SISO系统中，通常期望避免诸如语音信号的音调分量的回归信号。 在多通道系统中，通常期望避免来自声部件的特定通道的回归信号，所述声部件可能与系统的其它部分中的声部件相关并且可能影响该特定通道。 在多通道应用中，通常期望避免来自音频信号的回归信号。
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公开(公告)号：US5689572A
公开(公告)日：1997-11-18
申请号：US352230
申请日：1994-12-08
申请人： Katsuo Ohki , Shinichi Shimode , Yukiji Iwase , Osamu Sekiguchi , Masanori Watanabe , Takahiro Daikoku , Tamotsu Tsukaguchi , Shigeru Koizumi
发明人： Katsuo Ohki , Shinichi Shimode , Yukiji Iwase , Osamu Sekiguchi , Masanori Watanabe , Takahiro Daikoku , Tamotsu Tsukaguchi , Shigeru Koizumi
IPC分类号： G10K11/178 , H03B29/00
CPC分类号： G10K11/1786 , G10K2210/10 , G10K2210/104 , G10K2210/112 , G10K2210/3018 , G10K2210/30232 , G10K2210/3026 , G10K2210/3027 , G10K2210/3039
摘要： In an active noise-reduction controlling apparatus, there are provided a reference sensor for outputting a reference signal corresponding to information about a noise source, a noise-reduction error sensor for detecting a noise-reduction condition, an adding acoustic wave source controlled to produce an acoustic wave having the same amplitude as that of an acoustic wave received at the noise-reduction error sensor and having a phase opposite to that of the acoustic wave received as the noise-reduction error sensor; a first adaptive digital filter for processing the reference signal to output a control signal of the adding acoustic wave source, a second adaptive digital filter for setting a predicted value of a transfer function between an input signal of the adding acoustic wave source and an output signal of said noise-reduction error sensor, a filter coefficient controlling unit for optimizing a coefficient of the first adaptive digital filter with employment of the predicted value of the transfer function and the output of the noise-reduction error sensor, and a control unit for correcting the predicted value of the transfer function in accordance with an environmental change.
摘要翻译： 在有源降噪控制装置中，设置有用于输出与噪声源有关的信息的基准信号的参考传感器，用于检测噪声降低条件的噪声降低误差传感器，被控制产生的加法声波源 具有与在噪声降低误差传感器处接收的声波相同振幅的声波，并且具有与作为噪声降低误差传感器接收的声波的相位相反的相位; 第一自适应数字滤波器，用于处理参考信号以输出加法声波源的控制信号;第二自适应数字滤波器，用于在加法声波源的输入信号和输出信号之间设置传递函数的预测值 的滤波器系数控制单元，其利用所述传递函数的预测值和所述降噪误差传感器的输出来优化所述第一自适应数字滤波器的系数;以及控制单元，用于校正所述噪声降低误差传感器 根据环境变化的传递函数的预测值。
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