公开(公告)号：US09159337B2

公开(公告)日：2015-10-13

申请号：US13503248

申请日：2010-05-25

申请人： Lars Villemoes ,  Per Ekstrand ,  Sascha Disch ,  Frederik Nagel ,  Stephan Wilde

发明人： Lars Villemoes ,  Per Ekstrand ,  Sascha Disch ,  Frederik Nagel ,  Stephan Wilde

IPC分类号： H04R3/04 ,  G10L21/038 ,  G10L19/025

CPC分类号： G10L21/038 ,  G10L19/025

摘要： An apparatus for generating a high frequency audio signal that includes an analyzer for analyzing an input signal to determine a transient information adaptively. Additionally a spectral converter is provided for converting the input signal into an input spectral representation. A spectral processor processes the input spectral representation to generate a processed spectral representation including values for higher frequencies than the input spectral representation. A time converter is configured for converting the processed spectral representation to a time representation, wherein the spectral converter or the time converter are controllable to perform a frequency domain oversampling for the first portion of the input signal having the transient information associated and to not perform the frequency domain oversampling for the second portion of the input signal not having the associated transient information.

摘要翻译： 一种用于产生高频音频信号的装置，包括用于分析输入信号的分析器，以自适应地确定瞬时信息。 另外，提供了用于将输入信号转换为输入频谱表示的频谱转换器。 频谱处理器处理输入频谱表示以产生包括比输入频谱表示更高频率的值的经处理的频谱表示。 时间转换器被配置为将经处理的频谱表示转换为时间表示，其中频谱转换器或时间转换器是可控制的，以对具有相关联的瞬态信息的输入信号的第一部分执行频域过采样，并且不执行 输入信号的第二部分不具有相关联的瞬态信息的频域过采样。

公开(公告)号：US20130090933A1

公开(公告)日：2013-04-11

申请号：US13604364

申请日：2012-09-05

申请人： Lars Villemoes ,  Per Ekstrand ,  Sascha Disch ,  Frederik Nagel ,  Stephan Wilde

发明人： Lars Villemoes ,  Per Ekstrand ,  Sascha Disch ,  Frederik Nagel ,  Stephan Wilde

IPC分类号： G10L19/008

CPC分类号： G10L19/008 ,  G10L19/0204 ,  G10L21/038 ,  G10L21/04

摘要： An apparatus for processing an input audio signal relies on a cascade of filterbanks, the cascade having a synthesis filterbank for synthesizing an audio intermediate signal from the input audio signal, the input audio signal being represented by a plurality of first subband signals generated by an analysis filterbank, wherein a number of filterbank channels of the synthesis filterbank is smaller than a number of channels of the analysis filterbank. The apparatus furthermore has a further analysis filterbank for generating a plurality of second subband signals from the audio intermediate signal, wherein the further analysis filterbank has a number of channels being different from the number of channels of the synthesis filterbank, so that a sampling rate of a subband signal of the plurality of second subband signals is different from a sampling rate of a first subband signal of the plurality of first subband signals.

摘要翻译： 用于处理输入音频信号的装置依赖于级联的滤波器组，该级联具有用于从输入音频信号合成音频中间信号的合成滤波器组，输入音频信号由分析产生的多个第一子带信号表示 滤波器组，其中合成滤波器组的多个滤波器组信道小于分析滤波器组的信道数。 该装置还具有用于从音频中间信号产生多个第二子带信号的进一步的分析滤波器组，其中进一步的分析滤波器组具有与合成滤波器组的信道数不同的信道数，使得采样率 多个第二子带信号的子带信号与多个第一子带信号的第一子带信号的采样率不同。

公开(公告)号：US20120281859A1

公开(公告)日：2012-11-08

申请号：US13503248

申请日：2010-05-25

申请人： Lars Villemoes ,  Per Ekstrand ,  Sascha Disch ,  Frederik Nagel ,  Stephan Wilde

发明人： Lars Villemoes ,  Per Ekstrand ,  Sascha Disch ,  Frederik Nagel ,  Stephan Wilde

IPC分类号： H03G5/00

CPC分类号： G10L21/038 ,  G10L19/025

摘要： An apparatus for generating a high frequency audio signal that includes an analyzer for analyzing an input signal to determine a transient information adaptively. Additionally a spectral converter is provided for converting the input signal into an input spectral representation. A spectral processor processes the input spectral representation to generate a processed spectral representation including values for higher frequencies than the input spectral representation. A time converter is configured for converting the processed spectral representation to a time representation, wherein the spectral converter or the time converter are controllable to perform a frequency domain oversampling for the first portion of the input signal having the transient information associated and to not perform the frequency domain oversampling for the second portion of the input signal not having the associated transient information.

摘要翻译： 一种用于产生高频音频信号的装置，包括用于分析输入信号的分析器，以自适应地确定瞬时信息。 另外，提供了用于将输入信号转换为输入频谱表示的频谱转换器。 频谱处理器处理输入频谱表示以产生包括比输入频谱表示更高频率的值的经处理的频谱表示。 时间转换器被配置为将经处理的频谱表示转换为时间表示，其中频谱转换器或时间转换器是可控制的，以对具有相关联的瞬态信息的输入信号的第一部分执行频域过采样，并且不执行 输入信号的第二部分不具有相关联的瞬态信息的频域过采样。

公开(公告)号：US09318127B2

公开(公告)日：2016-04-19

申请号：US13604313

申请日：2012-09-05

申请人： Sascha Disch ,  Frederik Nagel ,  Stephan Wilde ,  Lars Villemoes ,  Per Ekstrand

发明人： Sascha Disch ,  Frederik Nagel ,  Stephan Wilde ,  Lars Villemoes ,  Per Ekstrand

IPC分类号： G10L21/038

CPC分类号： G10L19/0208 ,  G10L19/022 ,  G10L19/16 ,  G10L19/26 ,  G10L21/038

摘要： An apparatus for generating a bandwidth extended audio signal from an input signal, includes a patch generator for generating one or more patch signals from the input signal, wherein the patch generator is configured for performing a time stretching of subband signals from an analysis filterbank, and wherein the patch generator further includes a phase adjuster for adjusting phases of the subband signals using a filterbank-channel dependent phase correction.

摘要翻译： 一种用于从输入信号产生带宽扩展音频信号的装置，包括用于从所述输入信号产生一个或多个贴片信号的贴片发生器，其中所述贴片发生器被配置为执行来自分析滤波器组的子带信号的时间拉伸，以及 其中所述补丁发生器还包括相位调整器，用于使用滤波器组信道相关相位校正来调整所述子带信号的相位。

公开(公告)号：US09792915B2

公开(公告)日：2017-10-17

申请号：US13604364

申请日：2012-09-05

申请人： Lars Villemoes ,  Per Ekstrand ,  Sascha Disch ,  Frederik Nagel ,  Stephan Wilde

发明人： Lars Villemoes ,  Per Ekstrand ,  Sascha Disch ,  Frederik Nagel ,  Stephan Wilde

IPC分类号： G10L19/008 ,  G10L19/02 ,  G10L21/038 ,  G10L21/04

CPC分类号： G10L19/008 ,  G10L19/0204 ,  G10L21/038 ,  G10L21/04

摘要： An apparatus for processing an input audio signal relies on a cascade of filterbanks, the cascade having a synthesis filterbank for synthesizing an audio intermediate signal from the input audio signal, the input audio signal being represented by a plurality of first subband signals generated by an analysis filterbank, wherein a number of filterbank channels of the synthesis filterbank is smaller than a number of channels of the analysis filterbank. The apparatus furthermore has a further analysis filterbank for generating a plurality of second subband signals from the audio intermediate signal, wherein the further analysis filterbank has a number of channels being different from the number of channels of the synthesis filterbank, so that a sampling rate of a subband signal of the plurality of second subband signals is different from a sampling rate of a first subband signal of the plurality of first subband signals.

公开(公告)号：US09305557B2

公开(公告)日：2016-04-05

申请号：US13604336

申请日：2012-09-05

申请人： Frederik Nagel ,  Sascha Disch ,  Stephan Wilde ,  Lars Villemoes ,  Per Ekstrand

发明人： Frederik Nagel ,  Sascha Disch ,  Stephan Wilde ,  Lars Villemoes ,  Per Ekstrand

IPC分类号： G10L19/08 ,  G10L19/008 ,  G10L19/02 ,  G10L21/038 ,  G10L21/04

CPC分类号： G10L19/008 ,  G10L19/0204 ,  G10L21/038 ,  G10L21/04

摘要： Apparatus for processing an audio signal to generate a bandwidth extended signal having a high frequency part and a low frequency part using parametric data for the high frequency part, the parametric data relating to frequency bands of the high frequency part includes a patch border calculator for calculating a patch border such that the patch border coincides with a frequency band border of the frequency bands. The apparatus further includes a patcher for generating a patched signal using the audio signal and the patch border.

摘要翻译： 用于处理音频信号以使用高频部分的参数数据产生具有高频部分和低频部分的带宽扩展信号的装置，与高频部分的频带有关的参数数据包括用于计算的频块边界计算器 贴片边界使得贴片边界与频带的频带边界重合。 该装置还包括一个修补器，用于使用音频信号和补片边界产生修补信号。

公开(公告)号：US20130058498A1

公开(公告)日：2013-03-07

申请号：US13604313

申请日：2012-09-05

申请人： Sascha Disch ,  Frederik Nagel ,  Stephan Wilde ,  Lars Villemoes ,  Per Ekstrand

发明人： Sascha Disch ,  Frederik Nagel ,  Stephan Wilde ,  Lars Villemoes ,  Per Ekstrand

IPC分类号： H04R1/40

CPC分类号： G10L19/0208 ,  G10L19/022 ,  G10L19/16 ,  G10L19/26 ,  G10L21/038

摘要： An apparatus for generating a bandwidth extended audio signal from an input signal, includes a patch generator for generating one or more patch signals from the input signal, wherein the patch generator is configured for performing a time stretching of subband signals from an analysis filterbank, and wherein the patch generator further includes a phase adjuster for adjusting phases of the subband signals using a filterbank-channel dependent phase correction.

摘要翻译： 一种用于从输入信号产生带宽扩展音频信号的装置，包括用于从所述输入信号产生一个或多个贴片信号的贴片发生器，其中所述贴片发生器被配置为执行来自分析滤波器组的子带信号的时间拉伸，以及 其中所述补丁发生器还包括相位调整器，用于使用滤波器组信道相关相位校正来调整所述子带信号的相位。

公开(公告)号：US20130051571A1

公开(公告)日：2013-02-28

申请号：US13604336

申请日：2012-09-05

申请人： Frederik Nagel ,  Sascha Disch ,  Stephan Wilde ,  Lars Villemoes ,  Per Ekstrand

发明人： Frederik Nagel ,  Sascha Disch ,  Stephan Wilde ,  Lars Villemoes ,  Per Ekstrand

IPC分类号： H04R29/00

CPC分类号： G10L19/008 ,  G10L19/0204 ,  G10L21/038 ,  G10L21/04

摘要： Apparatus for processing an audio signal to generate a bandwidth extended signal having a high frequency part and a low frequency part using parametric data for the high frequency part, the parametric data relating to frequency bands of the high frequency part includes a patch border calculator for calculating a patch border such that the patch border coincides with a frequency band border of the frequency bands. The apparatus further includes a patcher for generating a patched signal using the audio signal and the patch border.

摘要翻译： 用于处理音频信号以使用高频部分的参数数据产生具有高频部分和低频部分的带宽扩展信号的装置，与高频部分的频带有关的参数数据包括用于计算的频块边界计算器 贴片边界使得贴片边界与频带的频带边界重合。 该装置还包括一个修补器，用于使用音频信号和补片边界产生修补信号。

公开(公告)号：US09240196B2

公开(公告)日：2016-01-19

申请号：US13604813

申请日：2012-09-06

申请人： Sascha Disch ,  Frederik Nagel ,  Stephan Wilde

发明人： Sascha Disch ,  Frederik Nagel ,  Stephan Wilde

IPC分类号： G10L21/038 ,  G10L21/04 ,  G10L19/025

CPC分类号： G10L21/038 ,  G10L19/025 ,  G10L21/04

摘要： An apparatus for processing an audio signal has an overlap-add stage for overlapping and adding blocks of a corresponding one of a plurality of subband signals using an overlap-add-advance value being different from a block extraction advance value. The apparatus further has a transient detector for detecting a transient in the audio signal or a subband signal of the plurality of subband signals. The overlap-add stage is configured for reducing an influence of a detected transient or for not using the detected transients when adding. The apparatus further has a transient adder for adding a detected transient to a subband signal generated by the overlap/add stage. A related method for processing an audio signal has, inter alia, either reducing an influence or discarding a detected transient when overlapping and adding.

摘要翻译： 用于处理音频信号的装置具有重叠添加级，用于使用与块提取提前值不同的重叠添加提前值来重叠和相加多个子带信号中的相应块的块。 该装置还具有用于检测音频信号中的瞬态或多个子带信号的子带信号的瞬态检测器。 重叠添加级被配置为减少检测到的瞬态的影响或者在添加时不使用检测到的瞬变。 该装置还具有一个瞬态加法器，用于将检测到的瞬态值与由重叠/加法级产生的子带信号相加。 用于处理音频信号的相关方法尤其是在重叠和相加时减少影响或丢弃检测到的瞬变。

公开(公告)号：US20130060367A1

公开(公告)日：2013-03-07

申请号：US13604813

申请日：2012-09-06

申请人： Sascha Disch ,  Frederik Nagel ,  Stephan Wilde

发明人： Sascha Disch ,  Frederik Nagel ,  Stephan Wilde

IPC分类号： G06F17/00

CPC分类号： G10L21/038 ,  G10L19/025 ,  G10L21/04

摘要： An apparatus for processing an audio signal has an overlap-add stage for overlapping and adding blocks of a corresponding one of a plurality of subband signals using an overlap-add-advance value being different from a block extraction advance value. The apparatus further has a transient detector for detecting a transient in the audio signal or a subband signal of the plurality of subband signals. The overlap-add stage is configured for reducing an influence of a detected transient or for not using the detected transients when adding. The apparatus further has a transient adder for adding a detected transient to a subband signal generated by the overlap/add stage. A related method for processing an audio signal has, inter alia, either reducing an influence or discarding a detected transient when overlapping and adding.

摘要翻译： 用于处理音频信号的装置具有重叠添加级，用于使用与块提取提前值不同的重叠添加提前值来重叠和相加多个子带信号中的相应块的块。 该装置还具有用于检测音频信号中的瞬态或多个子带信号的子带信号的瞬态检测器。 重叠添加级被配置为减少检测到的瞬态的影响或者在添加时不使用检测到的瞬变。 该装置还具有一个瞬态加法器，用于将检测到的瞬态值与由重叠/加法级产生的子带信号相加。 用于处理音频信号的相关方法尤其是在重叠和相加时减少影响或丢弃检测到的瞬变。