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41. 发明授权

US09264003B2 Apparatus and method for modifying an audio signal using envelope shaping 有权
标题翻译：使用包络整形修改音频信号的装置和方法
公开(公告)号：US09264003B2
公开(公告)日：2016-02-16
申请号：US13588177
申请日：2012-08-17
申请人： Sascha Disch
发明人： Sascha Disch
IPC分类号： G01L19/00 , H03G3/00 , G10H1/08 , G10H1/20 , G10H3/12 , G10L21/00 , H03G5/00 , G10L25/18 , G10L25/90 , G10L21/013
CPC分类号： H03G3/00 , G10H1/08 , G10H1/20 , G10H3/125 , G10H2210/066 , G10H2250/031 , G10L21/00 , G10L25/18 , G10L25/90 , G10L2021/0135 , H03G5/00
摘要： An apparatus for modifying an audio signal has an envelope shape determiner, a filterbank processor, a signal processor, a combiner and an envelope shaper. The envelope shape determiner determines envelope shape coefficients based on the a frequency domain audio signal representing a time domain input audio signal and the filterbank processor generates a plurality of bandpass signals in a subband domain based on the frequency domain audio signal. Further the signal processor modifies a subband domain bandpass signal of the plurality of subband domain bandpass signals based on a predefined modification target. The combiner combines at least a subset of the plurality of subband domain bandpass signals containing the modified subband domain bandpass signal to obtain a time domain audio signal. Further, the envelope shaper is operative to obtain a shaped audio signal.
摘要翻译：用于修改音频信号的装置具有包络形状确定器，滤波器组处理器，信号处理器，组合器和信封整形器。信封形状确定器基于表示时域输入音频信号的频域音频信号来确定包络形状系数，并且滤波器组处理器基于频域音频信号在子带域中产生多个带通信号。此外，信号处理器基于预定义的修改目标来修改多个子带域带通信号的子带域带通信号。组合器组合包含经修改的子带域带通信号的多个子带域带通信号的至少一个子集，以获得时域音频信号。此外，信封整形器可操作以获得成形的音频信号。

42. 发明授权

US09159337B2 Apparatus and method for generating a high frequency audio signal using adaptive oversampling 有权
标题翻译：使用自适应过采样来生成高频音频信号的装置和方法
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。

43. 发明授权

US08879742B2 Apparatus for determining a spatial output multi-channel audio signal 有权
公开(公告)号：US08879742B2
公开(公告)日：2014-11-04
申请号：US13291964
申请日：2011-11-08
申请人： Sascha Disch , Ville Pulkki , Mikko-Ville Laitinen , Cumhur Erkut
发明人： Sascha Disch , Ville Pulkki , Mikko-Ville Laitinen , Cumhur Erkut
IPC分类号： H04R5/00 , G06F17/00 , H04S7/00
CPC分类号： H04S7/30 , H04S2400/11 , H04S2420/03
摘要： An apparatus for determining a spatial output multi-channel audio signal based on an input audio signal and an input parameter. The apparatus includes a decomposer for decomposing the input audio signal based on the input parameter to obtain a first decomposed signal and a second decomposed signal different from each other. Furthermore, the apparatus includes a renderer for rendering the first decomposed signal to obtain a first rendered signal having a first semantic property and for rendering the second decomposed signal to obtain a second rendered signal having a second semantic property being different from the first semantic property. The apparatus comprises a processor for processing the first rendered signal and the second rendered signal to obtain the spatial output multi-channel audio signal.

44. 发明授权

US08532999B2 Apparatus and method for generating a multi-channel synthesizer control signal, multi-channel synthesizer, method of generating an output signal from an input signal and machine-readable storage medium 有权
标题翻译：用于产生多声道合成器控制信号的装置和方法，多声道合成器，从输入信号产生输出信号的方法和机器可读存储介质
公开(公告)号：US08532999B2
公开(公告)日：2013-09-10
申请号：US13158863
申请日：2011-06-13
申请人： Matthias Neusinger , Juergen Herre , Sascha Disch , Heiko Purnhagen , Kristofer Kjoerling , Jonas Engdegard , Jeroen Breebaart , Erik Schuijers , Werner Oomen
发明人： Matthias Neusinger , Juergen Herre , Sascha Disch , Heiko Purnhagen , Kristofer Kjoerling , Jonas Engdegard , Jeroen Breebaart , Erik Schuijers , Werner Oomen
IPC分类号： G10L19/14 , G10L21/02 , G06F15/00 , G10L11/00 , G10L11/02
CPC分类号： G10L19/26 , G10L19/008 , G10L2019/0012 , H04S3/008
摘要： An apparatus and a method for generating a multi-channel synthesizer control signal, a multi-channel synthesizer, a method of generating an output signal from an input signal and a machine-readable storage medium are provided. On an encoder-side, a multi-channel input signal is analyzed for obtaining smoothing control information, which is to be used by a decoder-side multi-channel synthesis for smoothing quantized transmitted parameters or values derived from the quantized transmitted parameters for providing an improved subjective audio quality in particular for slowly moving point sources and rapidly moving point sources having tonal material such as fast moving sinusoids.
摘要翻译：提供一种用于产生多声道合成器控制信号的装置和方法，多声道合成器，从输入信号产生输出信号的方法和机器可读存储介质。在编码器侧，分析多通道输入信号以获得平滑控制信息，该平滑控制信息将被解码器侧多信道合成用于平滑经量化的传输参数或从量化的传输参数导出的值，以提供改善主观音频质量，特别是对于缓慢移动的点源和具有诸如快速移动的正弦波的音调材料的快速移动的点源。

45. 发明申请

US20130090933A1 APPARATUS AND METHOD FOR PROCESSING AN INPUT AUDIO SIGNAL USING CASCADED FILTERBANKS 有权
标题翻译：使用CASCAD FILTERBANK处理输入音频信号的装置和方法
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。

46. 发明授权

US08116459B2 Enhanced method for signal shaping in multi-channel audio reconstruction 有权
标题翻译：多声道音频重构中信号整形的增强方法
公开(公告)号：US08116459B2
公开(公告)日：2012-02-14
申请号：US11384000
申请日：2006-05-18
申请人： Sascha Disch , Karsten Linzmeier , Juergen Herre , Harald Popp
发明人： Sascha Disch , Karsten Linzmeier , Juergen Herre , Harald Popp
IPC分类号： H04R5/00
CPC分类号： H04S3/002 , G10L19/008 , G10L19/26 , H04R2217/03 , H04S3/02 , H04S2420/03
摘要： The present invention is based on the finding that a reconstructed output channel, reconstructed with a multi-channel reconstructor using at least one downmix channel derived by downmixing a plurality of original channels and using a parameter representation including additional information on a temporal fine structure of an original channel can be reconstructed efficiently with high quality, when a generator for generating a direct signal component and a diffuse signal component based on the downmix channel is used. The quality can be essentially enhanced, if only the direct signal component is modified such that the temporal fine structure of the reconstructed output channel is fitting a desired temporal fine structure, indicated by the additional information on the temporal fine structure transmitted.
摘要翻译：本发明基于以下发现：重建的输出通道，其使用通过将多个原始通道进行下混合而导出的至少一个下混频道重建的多通道重构器，并且使用参数表示，该参数表示包括关于时间精细结构的附加信息当使用用于产生基于下混通道的直接信号分量和扩散信号分量的发生器时，可以高质量地重构原始信道。如果仅修改直接信号分量，使得重建的输出信道的时间精细结构适合于由发送的时间精细结构的附加信息所指示的期望的时间精细结构，则质量可以基本上增强。

47. 发明申请

US20110200196A1 APPARATUS FOR DETERMINING A SPATIAL OUTPUT MULTI-CHANNEL AUDIO SIGNAL 有权
标题翻译：用于确定空间输出多通道音频信号的装置
公开(公告)号：US20110200196A1
公开(公告)日：2011-08-18
申请号：US13025999
申请日：2011-02-11
申请人： Sascha Disch , Ville Pulkki , Mikko-Ville Laitinen , Cumhur Erkut
发明人： Sascha Disch , Ville Pulkki , Mikko-Ville Laitinen , Cumhur Erkut
IPC分类号： H04R5/00
CPC分类号： H04S7/30 , H04S2400/11 , H04S2420/03
摘要： An apparatus for determining a spatial output multi-channel audio signal based on an input audio signal and an input parameter. The apparatus includes a decomposer for decomposing the input audio signal based on the input parameter to obtain a first decomposed signal and a second decomposed signal different from each other. Furthermore, the apparatus includes a renderer for rendering the first decomposed signal to obtain a first rendered signal having a first semantic property and for rendering the second decomposed signal to obtain a second rendered signal having a second semantic property being different from the first semantic property. The apparatus comprises a processor for processing the first rendered signal and the second rendered signal to obtain the spatial output multi-channel audio signal.
摘要翻译：一种用于基于输入音频信号和输入参数来确定空间输出多声道音频信号的装置。该装置包括：分解器，用于基于输入参数分解输入音频信号，以获得彼此不同的第一分解信号和第二分解信号。此外，该装置包括用于渲染第一分解信号以获得具有第一语义属性的第一渲染信号的渲染器，并且用于渲染第二分解信号以获得具有与第一语义属性不同的第二语义属性的第二渲染信号。该装置包括用于处理第一渲染信号和第二渲染信号的处理器，以获得空间输出多声道音频信号。

48. 发明授权

US07974713B2 Temporal and spatial shaping of multi-channel audio signals 有权
标题翻译：多通道音频信号的时空整形
公开(公告)号：US07974713B2
公开(公告)日：2011-07-05
申请号：US11363985
申请日：2006-02-27
申请人： Sascha Disch , Juergen Herre , Matthias Neusinger , Dirk Jeroen Breebaart , Gerard Hotho
发明人： Sascha Disch , Juergen Herre , Matthias Neusinger , Dirk Jeroen Breebaart , Gerard Hotho
IPC分类号： G06F17/00 , H03M7/00 , H04R5/00 , G10L19/00
CPC分类号： G10L19/008 , H04S3/008
摘要： A selected channel of a multi-channel signal represented by frames composed from sampling values having a high time resolution is provided that can be encoded with higher quality when a wave form parameter representation representing a wave form of an intermediate resolution representation of the selected channel is derived. The wave form parameter representation with the intermediate resolution can be used to shape a reconstructed channel to retrieve a channel having a signal envelope close to a selected original channel. The time scale on which the shaping is performed is shorter than the time scale of a framewise processing, thus enhancing the quality of the reconstructed channel. On the other hand, the shaping time scale is larger than the time scale of the sampling values, significantly reducing the amount of data needed by the wave form parameter representation.
摘要翻译：提供了由具有高时间分辨率的采样值组成的帧表示的多通道信号的选定通道，当表示所选通道的中间分辨率表示的波形的波形参数表示为派生。具有中间分辨率的波形参数表示可用于对重建的信道进行整形以检索具有接近所选原始信道的信号包络的信道。进行整形的时间标度比框架处理的时间标度短，从而提高重构信道的质量。另一方面，成形时间尺度大于采样值的时间尺度，显着减少波形参数表示所需的数据量。

49. 发明申请

US20060004583A1 Multi-channel synthesizer and method for generating a multi-channel output signal 有权
标题翻译：用于产生多通道输出信号的多通道合成器和方法
公开(公告)号：US20060004583A1
公开(公告)日：2006-01-05
申请号：US10883538
申请日：2004-06-30
申请人： Juergen Herre , Sascha Disch , Johannes Hilpert , Christian Ertel , Andreas Hoelzer , Claus-Christian Spenger
发明人： Juergen Herre , Sascha Disch , Johannes Hilpert , Christian Ertel , Andreas Hoelzer , Claus-Christian Spenger
IPC分类号： G10L19/14
CPC分类号： H04S3/008 , G10L19/008 , H04S2420/03
摘要： A multi-channel synthesizer includes a post processor for determining post processed reconstruction parameters or quantities derived from the reconstruction parameter for an actual time portion of the input signal so that the post processed reconstruction parameter or the post processed quantity is different from the corresponding quantized and inversely quantized reconstruction parameter in that the value of the post processed reconstruction parameter or the derived quantity is not bound by the quantization step size. A multi-channel reconstructor uses the post-processed reconstruction parameter for reconstructing the multi-channel output signal. By post processing reconstruction parameters in connection with multi-channel encoding/decoding allows a low data rate on the one hand and a high quality on the other hand, since strong changes in the reconstructed multi-channel output signal because of a large quantization step size for the reconstruction parameter, which is preferable because of low bit rate requirements, are reduced.
摘要翻译：多通道合成器包括用于确定后处理的重构参数的后处理器或者对于输入信号的实际时间部分从重建参数导出的量，使得后处理的重构参数或后处理量与相应的量化和反量化重建参数，因为后处理重构参数或导出量的值不受量化步长的约束。多通道重建器使用后处理重构参数来重建多通道输出信号。通过后处理，与多信道编码/解码相关的重构参数一方面允许低数据速率和高质量，因为由于大量化步长而导致的重构多通道输出信号的强烈变化对于由于低比特率要求而优选的重构参数被减少。

50. 发明授权

US09792915B2 Apparatus and method for processing an input audio signal using cascaded filterbanks 有权
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.

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