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公开(公告)号：US20120224684A1
公开(公告)日：2012-09-06
申请号：US13222132
申请日：2011-08-31
申请人： Alexander Alexandrovich Petyushko , Dmitry Nikolaevich Babin , Alexander Markovic , Ivan Leonidovich Mazurenko , Denis Vladimirovich Parkhomenko
发明人： Alexander Alexandrovich Petyushko , Dmitry Nikolaevich Babin , Alexander Markovic , Ivan Leonidovich Mazurenko , Denis Vladimirovich Parkhomenko
摘要： In one embodiment, a high-level compensation (HLC) module receives samples of an input signal and determines whether a magnitude of each sample, represented in a linear domain, is relatively low or relatively high by comparing the magnitude to a threshold. If a sample is less than or equal to the threshold, then it is considered to have a relatively low magnitude and the sample is not attenuated. If a sample is greater than the threshold, then it is considered to have a relatively high magnitude and the HLC module attenuates the sample according to a “soft” non-linear function. The “soft” non-linear function is characterized by at least two of the following characteristics: the non-linear function (i) increases monotonically, (ii) forms a convex upwards curve, (iii) has a first derivative at the threshold equal to one, and (iv) has a first derivative at a maximum possible magnitude value equal to zero.
摘要翻译： 在一个实施例中，高电平补偿（HLC）模块接收输入信号的采样并且通过将幅度与阈值进行比较来确定在线性域中表示的每个采样的幅度是相对较低还是相对较高。 如果样品小于或等于阈值，则认为其具有相对较低的量值，并且样品不被衰减。 如果样本大于阈值，则认为其具有相对较高的幅度，并且HLC模块根据“软”非线性函数衰减样本。 “软”非线性函数的特征在于以下特征中的至少两个：非线性函数（i）单调增加，（ii）形成凸起的上升曲线，（iii）具有阈值下的一阶导数等于 至（iv）具有等于零的最大可能幅度值的一阶导数。
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公开(公告)号：US20120158401A1
公开(公告)日：2012-06-21
申请号：US13205882
申请日：2011-08-09
申请人： Ivan Leonidovich Mazurenko , Dmitry Nikolaevich Babin , Alexander Markovic , Denis Vladimirovich Parkhomenko , Alexander Alexandrovich Petyushko
发明人： Ivan Leonidovich Mazurenko , Dmitry Nikolaevich Babin , Alexander Markovic , Denis Vladimirovich Parkhomenko , Alexander Alexandrovich Petyushko
IPC分类号： G10L11/06
CPC分类号： G10L25/81
摘要： In one embodiment, a music detection (MD) module accumulates sets of one or more frames and performs FFT processing on each set to recover a set of coefficients, each corresponding to a different frequency k. For each frame, the module identifies candidate musical tones by searching for peak values in the set of coefficients. If a coefficient corresponds to a peak, then a variable TONE[k] corresponding to the coefficient is set equal to one. Otherwise, the variable is set equal to zero. For each variable TONE[k] having a value of one, a corresponding accumulator A[k] is increased. Candidate musical tones that are short in duration are filtered out by comparing each accumulator A[k] to a minimum duration threshold. A determination is made as to whether or not music is present based on a number of candidate musical tones and a sum of candidate musical tone durations using a state machine.
摘要翻译： 在一个实施例中，音乐检测（MD）模块累积一个或多个帧的集合，并对每个集合执行FFT处理以恢复一组系数，每个系数对应于不同的频率k。 对于每个帧，模块通过搜索该组系数中的峰值来识别候选音调。 如果系数对应于峰值，那么对应于系数的变量TONE [k]设置为等于1。 否则，变量设置为零。 对于值为1的每个变量TONE [k]，相应的累加器A [k]增加。 通过将每个累加器A [k]与最小持续时间阈值进行比较来滤除持续时间短的候选音调。 基于使用状态机的候选音乐音调的数量和候选音乐持续时间的总和，确定音乐是否存在。
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公开(公告)号：US20120201370A1
公开(公告)日：2012-08-09
申请号：US13222050
申请日：2011-08-31
申请人： Ivan Leonidovich Mazurenko , Dmitry Nikolaevich Babin , Denis Vassilevich Parfenov , Alexander Alexandrovich Petyushko , Alexander Markovic
发明人： Ivan Leonidovich Mazurenko , Dmitry Nikolaevich Babin , Denis Vassilevich Parfenov , Alexander Alexandrovich Petyushko , Alexander Markovic
摘要： In one embodiment, an acoustic echo control (AEC) module receives an outgoing signal and an incoming signal, which, at various times, contains acoustic echo corresponding to the outgoing signal. The AEC module has a delay estimation block that estimates, in the time domain, the echo delay using an adaptive filtering technique. This delay estimation is used to align samples of the incoming signal having acoustic echo with the corresponding samples of the outgoing signal from which the acoustic echo originated. The AEC module determines whether or not samples of the incoming signal contain acoustic echo based on the aligned outgoing signal, and the determinations are applied to a hangover counter. The AEC module then suppresses acoustic echo in the incoming signal and adds comfort noise to the incoming signal. The amount of echo suppression performed is gradually increased or decreased based on comparisons of the counter to a hangover threshold.
摘要翻译： 在一个实施例中，声学回声控制（AEC）模块接收输出信号和输入信号，其在不同时间包含对应于输出信号的声学回声。 AEC模块具有延迟估计块，其在时域中使用自适应滤波技术来估计回波延迟。 该延迟估计用于将具有声学回波的输入信号的样本与来自声学回声的输出信号的对应样本对准。 AEC模块确定输入信号的采样是否基于对齐的输出信号包含声学回波，并且确定应用于宿醉计数器。 AEC模块然后抑制输入信号中的声学回声，并为输入信号增加舒适噪声。 基于计数器与宿醉阈值的比较，进行的回波抑制量逐渐增加或减少。
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公开(公告)号：US08824667B2
公开(公告)日：2014-09-02
申请号：US13222050
申请日：2011-08-31
申请人： Ivan Leonidovich Mazurenko , Dmitry Nikolaevich Babin , Denis Vassilevich Parfenov , Alexander Alexandrovich Petyushko , Alexander Markovic
发明人： Ivan Leonidovich Mazurenko , Dmitry Nikolaevich Babin , Denis Vassilevich Parfenov , Alexander Alexandrovich Petyushko , Alexander Markovic
摘要： In one embodiment, an acoustic echo control (AEC) module receives an outgoing signal and an incoming signal, which, at various times, contains acoustic echo corresponding to the outgoing signal. The AEC module has a delay estimation block that estimates, in the time domain, the echo delay using an adaptive filtering technique. This delay estimation is used to align samples of the incoming signal having acoustic echo with the corresponding samples of the outgoing signal from which the acoustic echo originated. The AEC module determines whether or not samples of the incoming signal contain acoustic echo based on the aligned outgoing signal, and the determinations are applied to a hangover counter. The AEC module then suppresses acoustic echo in the incoming signal and adds comfort noise to the incoming signal. The amount of echo suppression performed is gradually increased or decreased based on comparisons of the counter to a hangover threshold.
摘要翻译： 在一个实施例中，声学回声控制（AEC）模块接收输出信号和输入信号，其在不同时间包含对应于输出信号的声学回声。 AEC模块具有延迟估计块，其在时域中使用自适应滤波技术来估计回波延迟。 该延迟估计用于将具有声学回波的输入信号的样本与来自声学回声的输出信号的对应样本对准。 AEC模块确定输入信号的采样是否基于对齐的输出信号包含声学回波，并且确定应用于宿醉计数器。 AEC模块然后抑制输入信号中的声学回声，并为输入信号增加舒适噪声。 基于计数器与宿醉阈值的比较，进行的回波抑制量逐渐增加或减少。
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公开(公告)号：US20120082220A1
公开(公告)日：2012-04-05
申请号：US13163853
申请日：2011-06-20
申请人： Ivan Leonidovich Mazurenko , Aleksey Alexandrovich Letunovskiy , Alexander Markovic , Denis Vassilevich Parfenov , Alexander Alexandrovich Petyushko
发明人： Ivan Leonidovich Mazurenko , Aleksey Alexandrovich Letunovskiy , Alexander Markovic , Denis Vassilevich Parfenov , Alexander Alexandrovich Petyushko
IPC分类号： H04N7/32
CPC分类号： H04N19/00218 , H04N19/11 , H04N19/159 , H04N19/176 , H04N19/40 , H04N19/59
摘要： A video transcoder for converting an encoded input video bit-stream having one spatial resolution into an encoded output video bit-stream having a lower spatial resolution, wherein learned statistics of intra-mode transcoding are used to constrain the search of intra modes for the output video bit-stream. The statistics of intra-mode transcoding can be gathered, e.g., by applying brute-force downsizing to a training set of video frames and then analyzing the observed intra-mode transcoding patterns to determine a transition-probability matrix for use during normal operation of the transcoder. The transition-probability matrix enables the transcoder to select appropriate intra modes for the output video bit-stream without performing a corresponding exhaustive full search, which advantageously reduces the computational complexity and processor load compared to those of a comparably performing prior-art video transcoder.
摘要翻译： 一种用于将具有一个空间分辨率的编码输入视频比特流转换为具有较低空间分辨率的编码输出视频比特流的视频代码转换器，其中使用帧内模式代码转换的学习统计量来限制用于输出的帧内模式搜索 视频位流。 可以收集帧内模式转码的统计数据，例如，通过对视频帧的训练集应用强力小型化，然后分析观察到的模式内转码模式，以确定在正常操作期间使用的转换概率矩阵 代码转换器 转换概率矩阵使得代码转换器能够选择用于输出视频比特流的适当的帧内模式，而不执行相应的穷尽全搜索，这有助于降低计算复杂度和处理器负载，与相对于现有技术的现有技术的视频转码器相比。
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公开(公告)号：US08780983B2
公开(公告)日：2014-07-15
申请号：US13163853
申请日：2011-06-20
申请人： Ivan Leonidovich Mazurenko , Aleksey Alexandrovich Letunovskiy , Alexander Markovic , Denis Vassilevich Parfenov , Alexander Alexandrovich Petyushko
发明人： Ivan Leonidovich Mazurenko , Aleksey Alexandrovich Letunovskiy , Alexander Markovic , Denis Vassilevich Parfenov , Alexander Alexandrovich Petyushko
CPC分类号： H04N19/00218 , H04N19/11 , H04N19/159 , H04N19/176 , H04N19/40 , H04N19/59
摘要： A video transcoder for converting an encoded input video bit-stream having one spatial resolution into an encoded output video bit-stream having a lower spatial resolution, wherein learned statistics of intra-mode transcoding are used to constrain the search of intra modes for the output video bit-stream. The statistics of intra-mode transcoding can be gathered, e.g., by applying brute-force downsizing to a training set of video frames and then analyzing the observed intra-mode transcoding patterns to determine a transition-probability matrix for use during normal operation of the transcoder. The transition-probability matrix enables the transcoder to select appropriate intra modes for the output video bit-stream without performing a corresponding exhaustive full search, which advantageously reduces the computational complexity and processor load compared to those of a comparably performing prior-art video transcoder.
摘要翻译： 一种用于将具有一个空间分辨率的编码输入视频比特流转换为具有较低空间分辨率的编码输出视频比特流的视频代码转换器，其中使用帧内模式代码转换的学习统计量来限制用于输出的帧内模式搜索 视频位流。 可以收集帧内模式转码的统计数据，例如，通过对视频帧的训练集应用强力小型化，然后分析观察到的模式内转码模式，以确定在正常操作期间使用的转换概率矩阵 代码转换器 转换概率矩阵使得代码转换器能够选择用于输出视频比特流的适当的帧内模式，而不执行相应的穷尽全搜索，这有助于降低计算复杂度和处理器负载，与相对于现有技术的现有技术的视频转码器相比。
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公开(公告)号：US20120106642A1
公开(公告)日：2012-05-03
申请号：US13165056
申请日：2011-06-21
申请人： Aleksey Alexandrovich Letunovskiy , Alexander Markovic , Ivan Leonidovich Mazurenko , Denis Vassilevich Parfenov , Alexander Alexandrovich Petyushko
发明人： Aleksey Alexandrovich Letunovskiy , Alexander Markovic , Ivan Leonidovich Mazurenko , Denis Vassilevich Parfenov , Alexander Alexandrovich Petyushko
IPC分类号： H04N7/26
摘要： A video transcoder for converting an encoded input video bit-stream having one spatial resolution into an encoded output video bit-stream having a lower spatial resolution, wherein motion-vector dispersion observed at the higher spatial resolution is quantified and used to configure the motion-vector search at the lower spatial resolution. For example, for video-frame areas characterized by relatively low motion-vector dispersion values, the motion-vector search may be performed over a relatively small vector space and with the use of fewer search patterns and/or hierarchical search levels. These constraints enable the transcoder to find appropriate motion vectors for inter-prediction coding without having to perform an exhaustive motion-vector search for these video-frame areas, which advantageously reduces the computational complexity and processor load compared to those of a comparably performing prior-art video transcoder.
摘要翻译： 一种用于将具有一个空间分辨率的编码输入视频比特流转换为具有较低空间分辨率的编码输出视频比特流的视频代码转换器，其中以较高空间分辨率观察到的运动矢量色散被量化并用于配置运动 - 矢量搜索在较低的空间分辨率。 例如，对于以相对低的运动矢量色散值为特征的视频帧区域，运动矢量搜索可以在相对较小的向量空间上并且使用较少的搜索模式和/或分级搜索级别来执行。 这些约束使得代码转换器能够找到用于帧间预测编码的适当的运动矢量，而不必对这些视频帧区域执行穷尽的运动矢量搜索，这有助于降低计算复杂度和处理器负载， 艺术视频转码器。
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公开(公告)号：US08711941B2
公开(公告)日：2014-04-29
申请号：US13165056
申请日：2011-06-21
申请人： Aleksey Alexandrovich Letunovskiy , Alexander Markovic , Ivan Leonidovich Mazurenko , Denis Vassilevich Parfenov , Alexander Alexandrovich Petyushko
发明人： Aleksey Alexandrovich Letunovskiy , Alexander Markovic , Ivan Leonidovich Mazurenko , Denis Vassilevich Parfenov , Alexander Alexandrovich Petyushko
摘要： A video transcoder for converting an encoded input video bit-stream having one spatial resolution into an encoded output video bit-stream having a lower spatial resolution, wherein motion-vector dispersion observed at the higher spatial resolution is quantified and used to configure the motion-vector search at the lower spatial resolution. For example, for video-frame areas characterized by relatively low motion-vector dispersion values, the motion-vector search may be performed over a relatively small vector space and with the use of fewer search patterns and/or hierarchical search levels. These constraints enable the transcoder to find appropriate motion vectors for inter-prediction coding without having to perform an exhaustive motion-vector search for these video-frame areas, which advantageously reduces the computational complexity and processor load compared to those of a comparably performing prior-art video transcoder.
摘要翻译： 一种用于将具有一个空间分辨率的编码输入视频比特流转换为具有较低空间分辨率的编码输出视频比特流的视频代码转换器，其中以较高空间分辨率观察到的运动矢量色散被量化并用于配置运动 - 矢量搜索在较低的空间分辨率。 例如，对于以相对低的运动矢量色散值为特征的视频帧区域，运动矢量搜索可以在相对较小的向量空间上并且使用较少的搜索模式和/或分级搜索级别来执行。 这些约束使得代码转换器能够找到用于帧间预测编码的适当的运动矢量，而不必对这些视频帧区域执行穷尽的运动矢量搜索，这有助于降低计算复杂度和处理器负载， 艺术视频转码器。
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公开(公告)号：US20130195007A1
公开(公告)日：2013-08-01
申请号：US13566146
申请日：2012-08-03
IPC分类号： H04W4/00
CPC分类号： H04B1/70755 , H04L7/042
摘要： In one embodiment, the present invention is a method for performing incremental preamble detection in a wireless communication network. The method processes non-overlapping chunks of incoming antenna data, where each chunk is smaller than the preamble length, to detect the signature of the transmitted preamble. For each chunk processed, chips of the chunk are correlated with possible signatures employed by the wireless network to update a set of correlation profiles, each profile comprising a plurality of profile values. Further, an intermediate detection is performed by comparing the updated profile values to an intermediate threshold that is also updated for each chunk. Upon receiving the final chunk, the correlation profiles are updated, and a final preamble detection is made by comparing the updated profile values to a final threshold. Detections are performed on an incremental basis to meet latency requirements of the wireless network.
摘要翻译： 在一个实施例中，本发明是一种用于在无线通信网络中执行增量前导码检测的方法。 该方法处理输入天线数据的不重叠块，其中每个块小于前导码长度，以检测所发送的前导码的签名。 对于处理的每个块，块的码片与由无线网络使用的可能的签名相关联，以更新一组相关轮廓，每个轮廓包括多个轮廓值。 此外，通过将更新的简档值与也为每个块更新的中间阈值进行比较来执行中间检测。 在接收到最后的块之后，更新相关轮廓，并且通过将更新的简档值与最终的阈值进行比较来进行最终的前导码检测。 检测是按增量执行的，以满足无线网络的延迟要求。
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公开(公告)号：US09362977B2
公开(公告)日：2016-06-07
申请号：US13566146
申请日：2012-08-03
IPC分类号： H04B1/7075 , H04L7/04
CPC分类号： H04B1/70755 , H04L7/042
摘要： In one embodiment, the present invention is a method for performing incremental preamble detection in a wireless communication network. The method processes non-overlapping chunks of incoming antenna data, where each chunk is smaller than the preamble length, to detect the signature of the transmitted preamble. For each chunk processed, chips of the chunk are correlated with possible signatures employed by the wireless network to update a set of correlation profiles, each profile comprising a plurality of profile values. Further, an intermediate detection is performed by comparing the updated profile values to an intermediate threshold that is also updated for each chunk. Upon receiving the final chunk, the correlation profiles are updated, and a final preamble detection is made by comparing the updated profile values to a final threshold. Detections are performed on an incremental basis to meet latency requirements of the wireless network.
摘要翻译： 在一个实施例中，本发明是一种用于在无线通信网络中执行增量前导码检测的方法。 该方法处理输入天线数据的不重叠块，其中每个块小于前导码长度，以检测所发送的前导码的签名。 对于处理的每个块，块的码片与由无线网络使用的可能的签名相关联，以更新一组相关轮廓，每个轮廓包括多个轮廓值。 此外，通过将更新的简档值与也为每个块更新的中间阈值进行比较来执行中间检测。 在接收到最后的块之后，更新相关轮廓，并且通过将更新的简档值与最终的阈值进行比较来进行最终的前导码检测。 检测是按增量执行的，以满足无线网络的延迟要求。
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