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1. 发明申请

WO2011110594A1 AUDIO SIGNAL DECODER, AUDIO SIGNAL ENCODER, METHOD FOR DECODING AN AUDIO SIGNAL, METHOD FOR ENCODING AN AUDIO SIGNAL AND COMPUTER PROGRAM USING A PITCH-DEPENDENT ADAPTATION OF A CODING CONTEXT 审中-公开
标题翻译：音频信号解码器，音频信号编码器，用于解码音频信号的方法，用于编码音频信号的方法和使用与编码语境相关的适应性的计算机程序
公开(公告)号：WO2011110594A1
公开(公告)日：2011-09-15
申请号：PCT/EP2011/053541
申请日：2011-03-09
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , DOLBY INTERNATIONAL AB , BAYER, Stefan , BÄCKSTRÖM, Tom , GEIGER, Ralf , EDLER, Bernd , DISCH, Sascha , VILLEMOES, Lars
发明人： BAYER, Stefan , BÄCKSTRÖM, Tom , GEIGER, Ralf , EDLER, Bernd , DISCH, Sascha , VILLEMOES, Lars
IPC分类号： G10L21/04
CPC分类号： G10L19/022 , G10L19/0212 , G10L25/90
摘要： An audio signal decoder (150 for providing a decoded audio signal representation (154) on the basis of an encoded audio signal representation (152) comprising an encoded spectrum representation (ac_spectral_data[]) and an encoded time warp information (tw_data[]) comprises a context-based spectral value decoder (160) configured to decode a codeword (acod_m) describing one or more spectral values or at least a portion (m) of a number representation of one or more spectral values in dependence on a context state, to obtain decoded spectral values (162, 297, x_ac_dec[]). The audio signal decoder also comprises a context state determinator (170) configured to determine a current context state (164, c) in dependence on one or more previously decoded spectral values (162, 297). The audio signal decoder also comprises a time warping frequency-domain-to-time-domain converter (180) configured to provide a time-warped time-domain representation (182) of a given audio frame on the basis of a set of decoded spectral values (162) associated with the given audio frame and provided by the context-based spectral value decoder and in dependence on the time warp information. The context-state determinator (170) is configured to adapt the determination of the context state to a change of a fundamental frequency between subsequent audio frames. An audio signal encoder applies a comparable concept.
摘要翻译：音频信号解码器（150）用于基于包括编码频谱表示（ac_spectral_data []）和编码时间扭曲信息（tw_data []）的编码音频信号表示（152）提供解码音频信号表示（154）基于上下文的频谱值解码器（160），被配置为对描述根据上下文状态的一个或多个频谱值的数字表示的一个或多个频谱值或至少一部分（m）的码字（acod_m）进行解码，音频信号解码器还包括上下文状态确定器（170），配置为根据一个或多个先前解码的频谱值（164，c）来确定当前上下文状态（164，c）音频信号解码器还包括时间扭曲频域 - 时域转换器（180），其被配置为基于以下方式提供给定音频帧的时间扭曲时域表示（182）一套与由给定音频帧相关联并由基于上下文的频谱值解码器提供并且依赖于时间扭曲信息的解码频谱值（162）。上下文状态确定器（170）被配置为使上下文状态的确定适应于后续音频帧之间的基本频率的改变。音频信号编码器应用可比较的概念。

2. 发明申请

WO2011110494A1 IMPROVED MAGNITUDE RESPONSE AND TEMPORAL ALIGNMENT IN PHASE VOCODER BASED BANDWIDTH EXTENSION FOR AUDIO SIGNALS 审中-公开
标题翻译：基于相位VOCODER的音频信号带宽延迟的改进的抖动响应和时间对齐
公开(公告)号：WO2011110494A1
公开(公告)日：2011-09-15
申请号：PCT/EP2011/053298
申请日：2011-03-04
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , DOLBY INTERNATIONAL AB , DISCH, Sascha , NAGEL, Frederik , WILDE, Stephan , VILLEMOES, Lars , EKSTRAND, Per
发明人： DISCH, Sascha , NAGEL, Frederik , WILDE, Stephan , VILLEMOES, Lars , EKSTRAND, Per
IPC分类号： G10L21/02
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, comprises 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 (1800, 1808) of subband signals from an analysis filterbank, and wherein the patch generator further comprises a phase adjuster (1806) 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用于执行子带信号的时间延伸（1800,1808）分析滤波器组，并且其中所述补丁发生器还包括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的相位调整器（1806）。

3. 发明申请

WO2011047886A1 APPARATUS AND METHOD FOR GENERATING A HIGH FREQUENCY AUDIO SIGNAL USING ADAPTIVE OVERSAMPLING 审中-公开
标题翻译：使用自适应超声波产生高频音频信号的装置和方法
公开(公告)号：WO2011047886A1
公开(公告)日：2011-04-28
申请号：PCT/EP2010/057130
申请日：2010-05-25
申请人： DOLBY INTERNATIONAL AB , FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , VILLEMOES, Lars , EKSTRAND, Per , DISCH, Sascha , NAGEL, Frederik , WILDE, Stefan
发明人： VILLEMOES, Lars , EKSTRAND, Per , DISCH, Sascha , NAGEL, Frederik , WILDE, Stefan
IPC分类号： G10L21/02 , G10L19/02
CPC分类号： G10L21/038 , G10L19/025
摘要： An apparatus for generating a high frequency audio signal that comprises an analyzer (12) for analyzing an input signal to determine a transient information adaptively. Additionally a spectral converter (14) is provided for converting the input signal into an input spectral representation. A spectral processor (13) processes the input spectral representation to generate a processed spectral representation comprising values for higher frequencies than the input spectral representation. A time converter (17) 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，包括分析器（12），用于分析输入信号以自适应地确定瞬时信息。另外，提供频谱转换器（14）用于将输入信号转换成输入频谱表示。频谱处理器（13）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频谱表示。时间转换器（17）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，以对具有相关瞬态信息的输入信号的第一部分进行频域过采样，不对不具有相关联的瞬时信息的输入信号的第二部分执行频域过采样。

4. 发明申请

WO2011110591A1 AUDIO SIGNAL DECODER, AUDIO SIGNAL ENCODER, METHODS AND COMPUTER PROGRAM USING A SAMPLING RATE DEPENDENT TIME-WARP CONTOUR ENCODING 审中-公开
标题翻译：音频信号解码器，音频信号编码器，使用采样速率的方法和计算机程序依赖于时间波形编码
公开(公告)号：WO2011110591A1
公开(公告)日：2011-09-15
申请号：PCT/EP2011/053538
申请日：2011-03-09
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , DOLBY INTERNATIONAL AB , BAYER, Stefan , BÄCKSTRÖM, Tom , GEIGER, Ralf , EDLER, Bernd , DISCH, Sascha , VILLEMOES, Lars
发明人： BAYER, Stefan , BÄCKSTRÖM, Tom , GEIGER, Ralf , EDLER, Bernd , DISCH, Sascha , VILLEMOES, Lars
IPC分类号： G10L19/02
CPC分类号： G10L19/022 , G10L19/0212 , G10L25/90
摘要： An audio signal decoder configured to provide a decoded audio signal representation on the basis of an encoded audio signal representation comprising a sampling frequency information, an encoded time warp information and an encoded spectrum representation comprises a time warp calculator and a warp decoder. The time warp calculator is configured to adapt a mapping rule for mapping codewords of the encoded time warp information onto decoded time warp values describing the decoded time warp information in dependence on the sampling frequency information. The warp decoder is configured to provide the decoded audio signal representation on the basis of the encoded spectrum representation and in dependence on the decoded time warp information.
摘要翻译：音频信号解码器被配置为基于包括采样频率信息，编码时间扭曲信息和编码频谱表示的编码音频信号表示来提供解码音频信号表示，包括时间扭曲计算器和扭曲解码器。时间扭曲计算器被配置为根据编码时间扭曲信息的码字将映射规则适应于根据采样频率信息描述解码的时间扭曲信息的解码时间扭曲值。翘曲解码器被配置为基于编码的频谱表示并且依赖于解码的时间扭曲信息来提供解码的音频信号表示。

5. 发明申请

WO2011110500A1 APPARATUS AND METHOD FOR PROCESSING AN INPUT AUDIO SIGNAL USING CASCADED FILTERBANKS 审中-公开
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：WO2011110500A1
公开(公告)日：2011-09-15
申请号：PCT/EP2011/053315
申请日：2011-03-04
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , DOLBY INTERNATIONAL AB , VILLEMOES, Lars , EKSTRAND, Per , DISCH, Sascha , NAGEL, Frederik , WILDE, Stephan
发明人： VILLEMOES, Lars , EKSTRAND, Per , DISCH, Sascha , NAGEL, Frederik , WILDE, Stephan
IPC分类号： G10L19/02 , G10L21/02 , G10L21/04
CPC分类号： G10L19/008 , G10L19/0204 , G10L21/038 , G10L21/04
摘要： An apparatus for processing an input audio signal (2300) relies on a cascade of filterbanks, the cascade comprising a synthesis filterbank (2304) for synthesizing an audio intermediate signal (2306) from the input audio signal (2300), the input audio signal being represented by a plurality of first subband signals (2303) generated by an analysis filterbank (2302), wherein a number of filterbank channels of the synthesis filterbank (2304) is smaller than a number of channels of the analysis filterbank (2302). The apparatus furthermore comprises a further analysis filterbank (2307) for generating a plurality of second subband signals (2308) from the audio intermediate signal (2306), wherein the further analysis filterbank has a number of channels being different from the number of channels of the synthesis filterbank (2304), so that a sampling rate of a subband signal of the plurality of second subband signals (2308) is different from a sampling rate of a first subband signal of the plurality of first subband signals (2303).
摘要翻译：用于处理输入音频信号（2300）的装置依赖于级联的滤波器组，级联包括用于从输入音频信号（2300）合成音频中间信号（2306）的合成滤波器组（2304），输入音频信号为由分析滤波器组（2302）生成的多个第一子带信号（2303）表示，其中合成滤波器组（2304）的多个滤波器组信道小于分析滤波器组（2302）的信道数。该装置还包括用于从音频中间信号（2306）产生多个第二子带信号（2308）的另一分析滤波器组（2307），其中所述另外的分析滤波器组具有与所述音频中间信号合成滤波器组（2304），使得多个第二子带信号（2308）的子带信号的采样率与多个第一子带信号（2303）中的第一子带信号的采样率不同。

6. 发明授权

EP2545553B1 APPARATUS AND METHOD FOR PROCESSING AN AUDIO SIGNAL USING PATCH BORDER ALIGNMENT 有权转让
标题翻译：设备和方法处理的音频信号片边界取向
公开(公告)号：EP2545553B1
公开(公告)日：2014-07-30
申请号：EP11715452.6
申请日：2011-03-04
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. , Dolby International AB , Disch, Sascha
发明人： VILLEMOES, Lars , EKSTRAND, Per , DISCH, Sascha , NAGEL, Frederik , WILDE, Stephan
IPC分类号： G10L21/038 , G10L21/04 , G10L19/02
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.

7. 发明公开

EP2545553A1 APPARATUS AND METHOD FOR PROCESSING AN AUDIO SIGNAL USING PATCH BORDER ALIGNMENT 有权转让
标题翻译：设备和方法处理的音频信号片边界取向
公开(公告)号：EP2545553A1
公开(公告)日：2013-01-16
申请号：EP11715452.6
申请日：2011-03-04
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. , Dolby International AB , Disch, Sascha
发明人： VILLEMOES, Lars , EKSTRAND, Per , DISCH, Sascha , NAGEL, Frederik , WILDE, Stephan
IPC分类号： G10L21/02 , G10L21/04 , G10L19/02
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.

8. 发明申请

WO2011110496A1 APPARATUS AND METHOD FOR HANDLING TRANSIENT SOUND EVENTS IN AUDIO SIGNALS WHEN CHANGING THE REPLAY SPEED OR PITCH 审中-公开
标题翻译：在更换复印机速度或倾斜时在音频信号中处理瞬态声音事件的装置和方法
公开(公告)号：WO2011110496A1
公开(公告)日：2011-09-15
申请号：PCT/EP2011/053303
申请日：2011-03-04
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , DISCH, Sascha , NAGEL, Frederik , WILDE, Stephan
发明人： DISCH, Sascha , NAGEL, Frederik , WILDE, Stephan
IPC分类号： G10L21/02 , G10L21/04
CPC分类号： G10L21/038 , G10L19/025 , G10L21/04
摘要： An apparatus for processing an audio signal comprises 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 comprises 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 comprises 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 comprises, inter alia, either reducing an influence or discarding a detected transient when overlapping and adding.
摘要翻译：一种用于处理音频信号的装置包括：使用与块提取提前值不同的重叠加法值，来叠加和添加多个子带信号中相应的一个子带信号的块的重叠添加级。该装置还包括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。该装置还包括一个瞬态加法器，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包括在重叠和相加时减少影响或丢弃检测到的瞬变。

9. 发明申请

WO2010003618A2 TIME WARP ACTIVATION SIGNAL PROVIDER, AUDIO SIGNAL ENCODER, METHOD FOR PROVIDING A TIME WARP ACTIVATION SIGNAL, METHOD FOR ENCODING AN AUDIO SIGNAL AND COMPUTER PROGRAMS 审中-公开
标题翻译：时间WARP激活信号提供商，音频信号编码器，提供时间WARP激活信号的方法，编码音频信号和计算机程序的方法
公开(公告)号：WO2010003618A2
公开(公告)日：2010-01-14
申请号：PCT/EP2009/004874
申请日：2009-07-06
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , BAYER, Stefan , DISCH, Sascha , GEIGER, Ralf , FUCHS, Guillaume , NEUENDORF, Max , SCHULLER, Gerald , EDLER, Bernd
发明人： BAYER, Stefan , DISCH, Sascha , GEIGER, Ralf , FUCHS, Guillaume , NEUENDORF, Max , SCHULLER, Gerald , EDLER, Bernd
IPC分类号： G10L19/10 , G10L21/04
CPC分类号： G10L21/04 , G10L19/002 , G10L19/0212 , G10L19/022 , G10L19/028 , G10L19/032 , G10L19/265 , G10L21/043 , G10L25/90
摘要： An audio encoder comprises a window function controller (504), a windower (502), a time warper (506) with a final quality check functionality, a time/frequency converter (508), a TNS stage (510) or a quantizer encoder (512), the window function controller (504), the time warper (506), the TNS stage (510) or an additional noise filling analyzer (524) are controlled by signal analysis results obtained by a time warp analyzer (516) or a signal classifier (520). Furthermore, a decoder applies a noise filling operation using a manipulated noise filling estimate depending on a harmonic or speech characteristic of the audio signal.
摘要翻译：音频编码器包括窗函数控制器（504），加窗器（502），具有最终质量检查功能的时间整形器（506），时间/频率转换器（508），TNS级（510）或量化器编码器（512），窗口功能控制器（504），时间整经器（506），TNS平台（510）或附加噪声填充分析器（524）由时间扭曲分析器（516）获得的信号分析结果或信号分类器（520）。此外，解码器使用根据音频信号的谐波或语音特性的操纵噪声填充估计来应用噪声填充操作。

10. 发明申请

WO2011104354A1 APPARATUS AND METHOD FOR MODIFYING AN AUDIO SIGNAL USING HARMONIC LOCKING 审中-公开
标题翻译：使用谐波锁定来修改音频信号的装置和方法
公开(公告)号：WO2011104354A1
公开(公告)日：2011-09-01
申请号：PCT/EP2011/052834
申请日：2011-02-25
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , DISCH, Sascha
发明人： DISCH, Sascha
IPC分类号： G10H1/08 , G10H1/20 , G10H3/12
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 comprises a filterbank processor, a fundamental determiner, an overtone determiner, a signal processor and a combiner. The filterbank processor generates a plurality of bandpass signals based on an audio signal and the fundamental determiner selects a bandpass signal of the plurality of bandpass signals to obtain a fundamental bandpass signal. Further, the overtone determiner identifies a bandpass signal of the plurality of bandpass signals fulfilling an overtone criterion regarding the selected fundamental bandpass signal to obtain an overtone bandpass signal associated to the selected fundamental bandpass signal. The signal processor modifies the selected fundamental bandpass signal based on a predefined modification target. Additionally, the signal processor modifies an identified overtone bandpass signal associated to the selected fundamental bandpass signal depending on the modification of the selected fundamental bandpass signal. Further, the combiner combines the plurality of bandpass signals to obtain a modified audio signal.
摘要翻译：用于修改音频信号的装置包括滤波器组处理器，基本确定器，泛音确定器，信号处理器和组合器。滤波器组处理器基于音频信号生成多个带通信号，并且基本确定器选择多个带通信号的带通信号以获得基本带通信号。此外，泛音确定器识别满足所选择的基带通信信号的泛音准则的多个带通信号的带通信号，以获得与所选择的基带通信信号相关联的泛音带通信号。信号处理器基于预定义的修改目标来修改所选择的基带通信信号。此外，信号处理器根据所选择的基带通信信号的修改来修改与所选择的基带通信信号相关联的所识别的泛音带通信号。此外，组合器组合多个带通信号以获得修改的音频信号。

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