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公开(公告)号：US09185509B2
公开(公告)日：2015-11-10
申请号：US13517243
申请日：2009-12-23
CPC分类号： H04S7/40 , H04R3/005 , H04R5/027 , H04R29/008 , H04R2430/01 , H04R2499/11 , H04S2400/13
摘要： An apparatus comprising at least one processor and at least one memory including computer program code the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to perform providing a visual representation of at least one audio parameter associated with at least one audio signal, detecting via an interface an interaction with the visual representation of the audio parameter, and processing the at least one audio signal associated with the audio parameter dependent on the interaction.
摘要翻译： 一种包括至少一个处理器和至少一个存储器的至少一个存储器，所述至少一个存储器包括计算机程序代码，所述至少一个存储器和所述计算机程序代码被配置为与所述至少一个处理器一起使所述设备至少执行提供至少的视觉表示 与至少一个音频信号相关联的一个音频参数，经由接口检测与所述音频参数的视觉表示的交互，以及根据所述交互来处理与所述音频参数相关联的所述至少一个音频信号。
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公开(公告)号：US20120284619A1
公开(公告)日：2012-11-08
申请号：US13517243
申请日：2009-12-23
IPC分类号： G06F3/01
CPC分类号： H04S7/40 , H04R3/005 , H04R5/027 , H04R29/008 , H04R2430/01 , H04R2499/11 , H04S2400/13
摘要： An apparatus comprising at least one processor and at least one memory including computer program code the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to perform providing a visual representation of at least one audio parameter associated with at least one audio signal, detecting via an interface an interaction with the visual representation of the audio parameter, and processing the at least one audio signal associated with the audio parameter dependent on the interaction.
摘要翻译： 一种包括至少一个处理器和至少一个存储器的至少一个存储器，所述至少一个存储器包括计算机程序代码，所述至少一个存储器和所述计算机程序代码被配置为与所述至少一个处理器一起使所述设备至少执行提供至少的视觉表示 与至少一个音频信号相关联的一个音频参数，经由接口检测与所述音频参数的视觉表示的交互，以及根据所述交互来处理与所述音频参数相关联的所述至少一个音频信号。
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公开(公告)号：US20130035777A1
公开(公告)日：2013-02-07
申请号：US13394783
申请日：2010-09-07
IPC分类号： G06F17/00
CPC分类号： G10L19/0204 , G10L21/0208
摘要： The invention relates to a method and an apparatus for processing an audio signal, wherein the method comprises the steps of: filtering an audio signal into at least two frequency band signals, generating for each frequency band signal a plurality of sub-band signals, wherein for at least one frequency band signal the plurality of sub-band signals are generated using a time to frequency domain transform and for the at least one other frequency band the plurality of sub-band signals for the other frequency band are generated using a sub-band filterbank, and the apparatus comprises at least one processor and at least one memory including computer program code, the at least one memory and the computer program code being configured to, with the at least one processor, cause the apparatus to perform the method.
摘要翻译： 本发明涉及一种用于处理音频信号的方法和装置，其中该方法包括以下步骤：将音频信号滤波为至少两个频带信号，为每个频带信号产生多个子带信号，其中 对于至少一个频带信号，使用时域到频域变换来生成多个子带信号，并且对于至少一个其他频带，使用子频带信号生成用于另一频带的多个子带信号， 并且所述装置包括至少一个处理器和包括计算机程序代码的至少一个存储器，所述至少一个存储器和所述计算机程序代码被配置为与所述至少一个处理器一起使得所述装置执行所述方法。
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公开(公告)号：US09294060B2
公开(公告)日：2016-03-22
申请号：US13700093
申请日：2010-05-25
CPC分类号： H03G3/20 , G10L19/0208 , G10L19/26 , G10L21/038 , G10L25/78
摘要： An apparatus for extending the bandwidth of an audio signal, the apparatus being configured to: generate an excitation signal from an audio signal, wherein in the audio signal comprises a plurality of frequency components; extract a feature vector from the audio signal, wherein the feature vector comprises at least one frequency domain component feature and at least one time domain component feature; determine at least one spectral shape parameter from the feature vector, wherein the at least one spectral shape parameter corresponds to a sub band signal comprising frequency components which belong to a further plurality of frequency components; and generate the sub band signal by filtering the excitation signal through a filter bank and weighting the filtered excitation signal with the at least one spectral shape parameter.
摘要翻译： 一种用于扩展音频信号的带宽的装置，该装置被配置为：从音频信号产生激励信号，其中在音频信号中包括多个频率分量; 从所述音频信号中提取特征向量，其中所述特征向量包括至少一个频域分量特征和至少一个时域分量特征; 从所述特征向量确定至少一个光谱形状参数，其中所述至少一个光谱形状参数对应于包括属于另外多个频率分量的频率分量的子带信号; 并通过滤波器组对激励信号进行滤波并且通过至少一个频谱形状参数对滤波的激励信号进行加权来产生子带信号。
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5.发明授权Recursive Bayesian controllers for non-linear acoustic echo cancellation and suppression systems 有权递归贝叶斯控制器用于非线性声学回声消除和抑制系统公开(公告)号：US08924337B2
公开(公告)日：2014-12-30
申请号：US13068341
申请日：2011-05-09
申请人： Sarmad Malik , Gerald Enzner , Jukka Petteri Vartiainen , Jari Petteri Sjoberg , Ville Mikael Myllyla
发明人： Sarmad Malik , Gerald Enzner , Jukka Petteri Vartiainen , Jari Petteri Sjoberg , Ville Mikael Myllyla
IPC分类号： G06N7/02
CPC分类号： G06N7/005
摘要： Both a cascade and a multichannel joint Bayesian estimator are provided for suppressing acoustic echo. An expansion basis (Power/Fourier series) is selected to convert a sample-based input signal xt into a DFT-domain multichannel signal [Xτ,1, . . . Xτ,p]. The posterior of unknown states (e.g., mean Ŵτ and covariance Pτ of the echo path Wτ and the mean âτ and covariance Qτ of the nonlinear coefficients aτ; or channel-wise mean Ŵτ,i and multichannel covariance Pτ of a compound quantity formed by merging together the echo path Wτ and the ith nonlinear coefficient aτ,i) and model parameters θτ are estimated; and Kalman gain factor(s) Kτ are computed for optimal adaptation of the posterior of unknown states. An echo signal Ŷτ is estimated using the multichannel input signal [Xτ,1, . . . Xτ,p] and the adapted posterior; and an error signal Eτ is generated. Residual echo is suppressed by post-filtering the error signal Eτ with a weighting function ψτ which depends on the adapted posterior, and the filtered error signal ŝ′t is then transmitted to a far-end.
摘要翻译： 提供级联和多通道联合贝叶斯估计器来抑制声学回声。 选择扩展基础（功率/傅立叶级数）以将基于采样的输入信号xt转换为DFT域多通道信号[Xτ，1，...， 。 。 Xτ，p]。 未知状态的后验（例如，回波路径Wτ的平均值和协方差Pτ以及非线性系数aτ的平均值和协方差Qτ或通过合并形成的复合数量的通道均值Ŵτ，i和多通道协方差Pτ 一起估计回波路径Wτ和第i个非线性系数aτ，i）和模型参数τ; 和卡尔曼增益因子（K）被计算用于未知状态的后验的最佳适应。 使用多通道输入信号[Xτ，1，...]来估计回波信号Ŷτ。 。 。 Xτ，p]和适应的后部; 并产生误差信号Eτ。 通过对取决于适合的后验的加权函数ψτ对误差信号Eτ进行后滤波来抑制残留回波，然后将滤波后的误差信号发送到远端。
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6.发明授权公开(公告)号：US09640187B2
公开(公告)日：2017-05-02
申请号：US13394783
申请日：2010-09-07
IPC分类号： G10L19/02 , G10L21/0208
CPC分类号： G10L19/0204 , G10L21/0208
摘要： The invention relates to a method and an apparatus for processing an audio signal, wherein the method comprises the steps of: filtering an audio signal into at least two frequency band signals, generating for each frequency band signal a plurality of sub-band signals, wherein for at least one frequency band signal the plurality of sub-band signals are generated using a time to frequency domain transform and for the at least one other frequency band the plurality of sub-band signals for the other frequency band are generated using a sub-band filterbank, and the apparatus comprises at least one processor and at least one memory including computer program code, the at least one memory and the computer program code being configured to, with the at least one processor, cause the apparatus to perform the method.
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公开(公告)号：US20130144614A1
公开(公告)日：2013-06-06
申请号：US13700093
申请日：2010-05-25
CPC分类号： H03G3/20 , G10L19/0208 , G10L19/26 , G10L21/038 , G10L25/78
摘要： An apparatus for extending the bandwidth of an audio signal, the apparatus being configured to: generate an excitation signal from an audio signal, wherein in the audio signal comprises a plurality of frequency components; extract a feature vector from the audio signal, wherein the feature vector comprises at least one frequency domain component feature and at least one time domain component feature; determine at least one spectral shape parameter from the feature vector, wherein the at least one spectral shape parameter corresponds to a sub band signal comprising frequency components which belong to a further plurality of frequency components; and generate the sub band signal by filtering the excitation signal through a filter bank and weighting the filtered excitation signal with the at least one spectral shape parameter.
摘要翻译： 一种用于扩展音频信号的带宽的装置，该装置被配置为：从音频信号产生激励信号，其中在音频信号中包括多个频率分量; 从所述音频信号中提取特征向量，其中所述特征向量包括至少一个频域分量特征和至少一个时域分量特征; 从所述特征向量确定至少一个光谱形状参数，其中所述至少一个光谱形状参数对应于包括属于另外多个频率分量的频率分量的子带信号; 并通过滤波器组对激励信号进行滤波并且通过至少一个频谱形状参数对滤波的激励信号进行加权来产生子带信号。
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8.发明申请Recursive bayesian controllers for non-linear acoustic echo cancellation and suppression systems 有权递归贝叶斯控制器用于非线性声学回声消除和抑制系统公开(公告)号：US20120290525A1
公开(公告)日：2012-11-15
申请号：US13068341
申请日：2011-05-09
申请人： Sarmad Malik , Gerald Enzner , Jukka Petteri Vartiainen , Jari Petteri Sjoberg , Ville Mikael Myllyla
发明人： Sarmad Malik , Gerald Enzner , Jukka Petteri Vartiainen , Jari Petteri Sjoberg , Ville Mikael Myllyla
IPC分类号： G06N7/02
CPC分类号： G06N7/005
摘要： Both a cascade and a multichannel joint Bayesian estimator are provided for suppressing acoustic echo. An expansion basis (Power/Fourier series) is selected to convert a sample-based input signal xt into a DFT-domain multichannel signal [Xτ,1, . . . Xτ,p]. The posterior of unknown states (e.g., mean Ŵτ and covariance Pτ of the echo path Wτ and the mean âτ and covariance Qτ of the nonlinear coefficients aτ; or channel-wise mean Ŵτ,i and multichannel covariance Pτ of a compound quantity formed by merging together the echo path Wτ and the ith nonlinear coefficient aτ,i) and model parameters θτ are estimated; and Kalman gain factor(s) Kτ are computed for optimal adaptation of the posterior of unknown states. An echo signal Ŷτ is estimated using the multichannel input signal [Xτ,1, . . . Xτ,p] and the adapted posterior; and an error signal Eτ is generated. Residual echo is suppressed by post-filtering the error signal Eτ with a weighting function ψτ which depends on the adapted posterior, and the filtered error signal ŝ′t is then transmitted to a far-end.
摘要翻译： 提供级联和多通道联合贝叶斯估计器来抑制声学回声。 选择扩展基础（功率/傅立叶级数）以将基于采样的输入信号xt转换为DFT域多通道信号[Xτ，1，...， 。 。 Xτ，p]。 未知状态的后验（例如，回波路径Wτ的平均值和协方差Pτ以及非线性系数aτ的平均值和协方差Qτ或通过合并形成的复合数量的通道均值Ŵτ，i和多通道协方差Pτ 一起估计回波路径Wτ和第i个非线性系数aτ，i）和模型参数τ; 和卡尔曼增益因子（K）被计算用于未知状态的后验的最佳适应。 使用多通道输入信号[Xτ，1，...]来估计回波信号Ŷτ。 。 。 Xτ，p]和适应的后部; 并产生误差信号Eτ。 通过对取决于适合的后验的加权函数ψτ对误差信号Eτ进行后滤波来抑制残留回波，然后将滤波后的误差信号发送到远端。
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