Apparatus and Method for Processing an Audio Signal for Speech Enhancement Using a Feature Extraction
    1.
    发明申请
    Apparatus and Method for Processing an Audio Signal for Speech Enhancement Using a Feature Extraction 有权
    使用特征提取处理用于语音增强的音频信号的装置和方法

    公开(公告)号:US20110191101A1

    公开(公告)日:2011-08-04

    申请号:US13019835

    申请日:2011-02-02

    IPC分类号: G10L19/00

    摘要: An apparatus for processing an audio signal to obtain control information for a speech enhancement filter has a feature extractor for extracting at least one feature per frequency band of a plurality of frequency bands of a short-time spectral representation of a plurality of short-time spectral representations, where the at least one feature represents a spectral shape of the short-time spectral representation in the frequency band. The apparatus additionally has a feature combiner for combining the at least one feature for each frequency band using combination parameters to obtain the control information for the speech enhancement filter for a time portion of the audio signal. The feature combiner can use a neural network regression method, which is based on combination parameters determined in a training phase for the neural network.

    摘要翻译: 用于处理音频信号以获得用于语音增强滤波器的控制信息的装置具有特征提取器,用于提取多个短时频谱的短时频谱表示的多个频带中的每个频带的至少一个特征 表示,其中至少一个特征表示频带中的短时间频谱表示的频谱形状。 该装置另外具有特征组合器,用于使用组合参数来组合每个频带的至少一个特征,以获得用于音频信号的时间部分的语音增强滤波器的控制信息。 特征组合器可以使用神经网络回归方法,其基于在神经网络的训练阶段中确定的组合参数。

    Apparatus and method for processing an audio signal for speech enhancement using a feature extraction
    2.
    发明授权
    Apparatus and method for processing an audio signal for speech enhancement using a feature extraction 有权
    用于使用特征提取来处理用于语音增强的音频信号的装置和方法

    公开(公告)号:US09064498B2

    公开(公告)日:2015-06-23

    申请号:US13019835

    申请日:2011-02-02

    摘要: An apparatus for processing an audio signal to obtain control information for a speech enhancement filter has a feature extractor for extracting at least one feature per frequency band of a plurality of frequency bands of a short-time spectral representation of a plurality of short-time spectral representations, where the at least one feature represents a spectral shape of the short-time spectral representation in the frequency band. The apparatus additionally has a feature combiner for combining the at least one feature for each frequency band using combination parameters to obtain the control information for the speech enhancement filter for a time portion of the audio signal. The feature combiner can use a neural network regression method, which is based on combination parameters determined in a training phase for the neural network.

    摘要翻译: 用于处理音频信号以获得用于语音增强滤波器的控制信息的装置具有特征提取器,用于提取多个短时频谱的短时频谱表示的多个频带中的每个频带的至少一个特征 表示,其中至少一个特征表示频带中的短时间频谱表示的频谱形状。 该装置另外具有特征组合器,用于使用组合参数来组合每个频带的至少一个特征,以获得用于音频信号的时间部分的语音增强滤波器的控制信息。 特征组合器可以使用神经网络回归方法,其基于在神经网络的训练阶段中确定的组合参数。

    Apparatus and method for extracting an ambient signal in an apparatus and method for obtaining weighting coefficients for extracting an ambient signal and computer program
    3.
    发明授权
    Apparatus and method for extracting an ambient signal in an apparatus and method for obtaining weighting coefficients for extracting an ambient signal and computer program 有权
    用于在装置中提取环境信号的装置和方法以及用于获得用于提取环境信号和计算机程序的加权系数的方法

    公开(公告)号:US08588427B2

    公开(公告)日:2013-11-19

    申请号:US12055787

    申请日:2008-03-26

    IPC分类号: H04R5/00

    CPC分类号: H04R5/04

    摘要: An apparatus for extracting an ambient signal from an input audio signal comprises a gain-value determinator configured to determine a sequence of time-varying ambient signal gain values for a given frequency band of the time-frequency distribution of the input audio signal in dependence on the input audio signal. The apparatus comprises a weighter configured to weight one of the sub-band signals representing the given frequency band of the time-frequency-domain representation with the time-varying gain values, to obtain a weighted sub-band signal. The gain-value determinator is configured to obtain one or more quantitative feature-values describing one or more features of the input audio signal and to provide the gain-value as a function of the one or more quantitative feature values such that the gain values are quantitatively dependent on the quantitative values. The gain value determinator is configured to determine the gain values such that ambience components are emphasized over non-ambience components in the weighted sub-band signal.

    摘要翻译: 一种用于从输入音频信号中提取环境信号的装置包括:增益值确定器,被配置为根据输入音频信号的时间 - 频率分布的给定频带来确定时变环境信号增益值的序列,依赖于 输入音频信号。 该装置包括被配置为将表示时间 - 频域表示的给定频带的子带信号中的一个与时变增益值加权的权重器,以获得加权子带信号。 增益值确定器被配置为获得描述输入音频信号的一个或多个特征的一个或多个定量特征值,并且将增益值提供为一个或多个定量特征值的函数,使得增益值为 定量依赖于定量值。 增益值确定器被配置为确定增益值,使得氛围分量在加权子带信号中的非环境分量上被强调。

    APPARATUS AND METHOD FOR EXTRACTING AN AMBIENT SIGNAL IN AN APPARATUS AND METHOD FOR OBTAINING WEIGHTING COEFFICIENTS FOR EXTRACTING AN AMBIENT SIGNAL AND COMPUTER PROGRAM
    4.
    发明申请
    APPARATUS AND METHOD FOR EXTRACTING AN AMBIENT SIGNAL IN AN APPARATUS AND METHOD FOR OBTAINING WEIGHTING COEFFICIENTS FOR EXTRACTING AN AMBIENT SIGNAL AND COMPUTER PROGRAM 有权
    用于提取装置的环境信号的装置和方法以及用于获取提取环境信号和计算机程序的加权系数的方法

    公开(公告)号:US20090080666A1

    公开(公告)日:2009-03-26

    申请号:US12055787

    申请日:2008-03-26

    IPC分类号: H04R5/04

    CPC分类号: H04R5/04

    摘要: An apparatus for extracting an ambient signal from an input audio signal comprises a gain-value determinator configured to determine a sequence of time-varying ambient signal gain values for a given frequency band of the time-frequency distribution of the input audio signal in dependence on the input audio signal. The apparatus comprises a weighter configured to weight one of the sub-band signals representing the given frequency band of the time-frequency-domain representation with the time-varying gain values, to obtain a weighted sub-band signal. The gain-value determinator is configured to obtain one or more quantitative feature-values describing one or more features of the input audio signal and to provide the gain-value as a function of the one or more quantitative feature values such that the gain values are quantitatively dependent on the quantitative values. The gain value determinator is configured to determine the gain values such that ambience components are emphasized over non-ambience components in the weighted sub-band signal.

    摘要翻译: 一种用于从输入音频信号中提取环境信号的装置包括:增益值确定器,被配置为根据输入音频信号的时间 - 频率分布的给定频带来确定时变环境信号增益值的序列,依赖于 输入音频信号。 该装置包括被配置为将表示时间 - 频域表示的给定频带的子带信号中的一个与时变增益值加权的权重器,以获得加权子带信号。 增益值确定器被配置为获得描述输入音频信号的一个或多个特征的一个或多个定量特征值,并且将增益值提供为一个或多个定量特征值的函数,使得增益值为 定量依赖于定量值。 增益值确定器被配置为确定增益值,使得氛围分量在加权子带信号中的非环境分量上被强调。

    Apparatus for generating a multi-channel audio signal
    7.
    发明授权
    Apparatus for generating a multi-channel audio signal 有权
    用于产生多声道音频信号的装置

    公开(公告)号:US08781133B2

    公开(公告)日:2014-07-15

    申请号:US13155477

    申请日:2011-06-08

    IPC分类号: H04R5/00

    CPC分类号: H04S3/002 H04S2400/11

    摘要: An apparatus for generating a multi-channel audio signal based on an input audio signal comprises a main signal upmixer, a section selector, a section signal upmixer and a combiner. The main signal upmixer is configured to provide a main multi-channel audio signal based on the input audio signal. The section selector is configured to select or not select a section of the input audio signal based on an analysis of the input audio signal. The selected section of the input audio signal, a processed selected section of the input audio signal or a reference signal associated with the selected section of the input audio signal is provided as section signal. The section signal upmixer is configured to provide a section upmix signal based on the section signal, and the combiner is configured to overlay the main multi-channel audio signal and the section upmix signal to obtain the multi-channel audio signal.

    摘要翻译: 一种用于基于输入音频信号产生多声道音频信号的装置包括主信号上混混器,分段选择器,分段信号上混合器和组合器。 主信号上混合器被配置为基于输入音频信号提供主多声道音频信号。 分段选择器被配置为基于对输入音频信号的分析来选择或不选择输入音频信号的一部分。 输入音频信号的选择部分,输入音频信号的经处理的选择部分或与输入音频信号的所选部分相关联的参考信号被提供为部分信号。 分段信号上混混合器被配置为基于分段信号提供分段上混信号,并且组合器被配置为覆盖主多声道音频信号和分段上混信号以获得多声道音频信号。