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1. 发明申请

WO2010003546A3 AN APPARATUS AND A METHOD FOR CALCULATING A NUMBER OF SPECTRAL ENVELOPES 审中-公开
标题翻译：一种用于计算多个光谱包络的装置和方法
公开(公告)号：WO2010003546A3
公开(公告)日：2010-03-04
申请号：PCT/EP2009004523
申请日：2009-06-23
申请人： FRAUNHOFER GES FORSCHUNG , NEUENDORF MAX , GRILL BERNHARD , KRAEMER ULRICH , MULTRUS MARKUS , POPP HARALD , RETTELBACH NIKOLAUS , NAGEL FREDERIK , LOHWASSER MARKUS , GAYER MARC , JANDER MANUEL , BACIGALUPO VIRGILIO
发明人： NEUENDORF MAX , GRILL BERNHARD , KRAEMER ULRICH , MULTRUS MARKUS , POPP HARALD , RETTELBACH NIKOLAUS , NAGEL FREDERIK , LOHWASSER MARKUS , GAYER MARC , JANDER MANUEL , BACIGALUPO VIRGILIO
IPC分类号： G10L21/02 , G10L19/02 , G10L19/14
CPC分类号： G10L21/038 , G10L19/0208 , G10L19/025 , G10L19/20
摘要： An apparatus (100) calculates a number (102) of spectral envelopes (104) to be derived by a spectral band replication (SBR) encoder, wherein the SBR encoder is adapted to encode an audio signal (105) using a plurality of sample values within a predetermined number of subsequent time portions (110) in an SBR frame extending from an initial time (t0) to a final time (tn), the predetermined number of subsequent time portions (110) being arranged in a time sequence given by the audio signal (105). The apparatus (100) comprises a decision value calculator (120) for determining a decision value (125), the decision value (125) measuring a deviation in spectral energy distributions of a pair of neighboring time portions. The apparatus (100) further comprises a detector (130) for detecting a violation (135) of a threshold by the decision value (125) and a processor (140) for determining a first envelope border (145) between the pair of neighboring time portions when the violation (135) of the threshold is detected. The apparatus (100) further comprises a processor (150) for determining a second envelope border (155) between a different pair of neighboring time portions or at the initial time (t0) or at the final time (tn) for an envelope having the first envelope border (145) based on the violation (135) of the threshold for the other pair or based on a temporal position of the pair or the different pair in the SBR frame. The apparatus (100) further comprises a number processor (160) for establishing the number (102) of spectral envelopes (104) having the first envelope border (145) and the second envelope border (155).
摘要翻译：一种装置（100）计算由谱带复制（SBR）编码器导出的频谱包络（104）的数目（102），其中SBR编码器适于使用多个采样值对音频信号（105）进行编码在从初始时间（t0）延伸到最后时间（tn）的SBR帧中的预定数量的后续时间部分（110）中，预定数量的后续时间部分（110）按照由音频信号（105）。装置（100）包括用于确定判定值（125）的判定值计算器（120），所述判定值（125）测量一对相邻时间部分的频谱能量分布的偏差。所述设备（100）还包括检测器（130），用于通过所述判定值（125）检测阈值的违规（135）;以及处理器（140），用于确定所述一对相邻时间之间的第一包络边界（145）当检测到阈值的违规（135）时的部分。所述装置（100）还包括处理器（150），用于确定不同对相邻时间部分之间的第二信封边界（155），或者在具有所述相邻时间部分的信封的初始时间（t0）或最后时间（tn）基于另一对的阈值的违规（135）或者基于SBR帧中的对或不同对的时间位置的第一包络边界（145）。所述设备（100）还包括用于建立具有所述第一信封边界（145）和所述第二信封边界（155）的频谱包络（104）的数量（102）的数字处理器（160）。

2. 发明申请

WO2010040522A2 MULTI-RESOLUTION SWITCHED AUDIO ENCODING/DECODING SCHEME 审中-公开
标题翻译：多分辨率切换音频编码/解码方案
公开(公告)号：WO2010040522A2
公开(公告)日：2010-04-15
申请号：PCT/EP2009007205
申请日：2009-10-07
申请人： FRAUNHOFER GES FORSCHUNG , VOICEAGE CORP , NEUENDORF MAX , BAYER STEFAN , LECOMTE JEREMIE , FUCHS GUILLAUME , ROBILLIARD JUIIEN , RETTELBACH NIKOLAUS , NAGEL FREDERIK , GEIGER RAIF , MULTRUS MARKUS , GRILL BERNHARD , GOURNAY PHILIPPE , SALAMI REDWAN
发明人： NEUENDORF MAX , BAYER STEFAN , LECOMTE JEREMIE , FUCHS GUILLAUME , ROBILLIARD JUIIEN , RETTELBACH NIKOLAUS , NAGEL FREDERIK , GEIGER RAIF , MULTRUS MARKUS , GRILL BERNHARD , GOURNAY PHILIPPE , SALAMI REDWAN
IPC分类号： G10L19/14 , G10L19/022 , G10L19/24
CPC分类号： G10L19/24 , G10L19/022
摘要： An audio encoder for encoding an audio signal comprises a first coding branch (400), the first coding branch comprising a first converter (410) for converting a signal from a time domain into a frequency domain. Furthermore, the audio encoder comprises a second coding branch (500) comprising a second time/frequency converter (523). Additionally, a signal analyzer (300/525) for analyzing the audio signal is provided. The signal analyzer, on the hand, determines whether an audio portion is effective in the encoder output signal as a first encoded signal from the first encoding branch or as a second encoded signal from a second encoding branch. On the other hand, the signal analyzer determines a time/frequency resolution to be applied by the converters (410, 523) when generating the encoded signals. An output interface includes, in addition to the first encoded signal and the second encoded signal, a resolution information identifying the resolution used by the first time/frequency converter and used by the second time/frequency converter.
摘要翻译：用于编码音频信号的音频编码器包括第一编码分支（400），第一编码分支包括用于将来自时域的信号转换成频域的第一转换器（410）。此外，音频编码器包括包括第二时间/频率转换器（523）的第二编码分支（500）。另外，提供了用于分析音频信号的信号分析器（300/525）。手持信号分析仪确定音频部分是否在编码器输出信号中作为来自第一编码分支的第一编码信号或来自第二编码分支的第二编码信号有效。另一方面，当生成编码信号时，信号分析器确定要由转换器（410,523）应用的时间/频率分辨率。除了第一编码信号和第二编码信号之外，输出接口包括识别由第一时间/频率转换器使用并由第二时间/频率转换器使用的分辨率的分辨率信息。

3. 发明申请

WO2009112141A8 DEVICE AND METHOD FOR MANIPULATING AN AUDIO SIGNAL HAVING A TRANSIENT EVENT 审中-公开
标题翻译：用于处理具有瞬时事件的音频信号的装置和方法
公开(公告)号：WO2009112141A8
公开(公告)日：2014-01-09
申请号：PCT/EP2009001108
申请日：2009-02-17
申请人： FRAUNHOFER GES FORSCHUNG , DISCH SASCHA , NAGEL FREDRIK , RETTELBACH NIKOLAUS , MULTRUS MARKUS , FUCHS GUILLAUME
发明人： DISCH SASCHA , NAGEL FREDRIK , RETTELBACH NIKOLAUS , MULTRUS MARKUS , FUCHS GUILLAUME
IPC分类号： G10L21/04
CPC分类号： G10L21/04 , G10L19/025
摘要： A signal manipulator for manipulating an audio signal having a transient event may comprise a transient remover (100), a signal processor (110) and a signal inserter (120) for inserting a time portion in a processed audio signal at a signal location where the transient event was removed before processing by said transient remover, so that a manipulated audio signal comprises a transient event not influenced by the processing, whereby the vertical coherence of the transient event is maintained instead of any processing performed in the signal processor (110), which would destroy the vertical coherence of a transient.
摘要翻译：用于操纵具有瞬态事件的音频信号的信号操纵器可以包括瞬时去除器（100），信号处理器（110）和信号插入器（120），用于将处理后的音频信号中的时间部分插入信号位置，暂时事件在由所述瞬时去除器处理之前被去除，使得被操纵的音频信号包括不受处理影响的瞬时事件，由此维持瞬态事件的垂直相干性而不是在信号处理器（110）中执行的任何处理，这将破坏瞬态的垂直一致性。

4. 发明申请

WO2008071353A3 ENCODER, DECODER AND METHODS FOR ENCODING AND DECODING DATA SEGMENTS REPRESENTING A TIME-DOMAIN DATA STREAM 审中-公开
标题翻译：用于编码和解码表示时域数据流的数据段的编码器，解码器和方法
公开(公告)号：WO2008071353A3
公开(公告)日：2008-08-21
申请号：PCT/EP2007010665
申请日：2007-12-07
申请人： FRAUNHOFER GES FORSCHUNG , GEIGER RALF , NEUENDORF MAX , YOKOTANI YOSHIKAZU , RETTELBACH NIKOLAUS , HERRE JUERGEN , GEYERSBERGER STEFAN
发明人： GEIGER RALF , NEUENDORF MAX , YOKOTANI YOSHIKAZU , RETTELBACH NIKOLAUS , HERRE JUERGEN , GEYERSBERGER STEFAN
IPC分类号： H04N7/26 , G10L19/02 , H04N7/30 , H04N7/52
CPC分类号： G10L19/18 , G10L19/00 , G10L19/02 , G10L19/022 , G10L19/032 , G10L19/265 , H04N19/00 , H04N21/2368 , H04N21/2383 , H04N21/2662 , H04N21/4341 , H04N21/4382
摘要： An apparatus for decoding data segments representing a time-domain data stream, a data segment being encoded in the time domain or in the frequency domain, a data segment being encoded in the frequency domain having successive blocks of data representing successive and overlapping blocks of time-domain data samples. The apparatus comprises a time-domain decoder for decoding a data segment being encoded in the time domain and a processor for processing the data segment being encoded in the frequency domain and output data of the time-domain decoder to obtain overlapping time-domain data blocks. The apparatus further comprises an overlap/add-combiner for combining the overlapping time-domain data blocks to obtain a decoded data segment of the time-domain data stream.
摘要翻译：一种用于对表示时域数据流的数据段进行解码的装置，数据段在时域或频域中被编码，数据段在频域中被编码，具有表示连续和重叠的时间块的连续数据块域数据样本。该装置包括用于对在时域中被编码的数据段进行解码的时域解码器和用于处理在频域中被编码的数据段并且输出时域解码器的数据以获得重叠的时域数据块的处理器。该装置进一步包括用于组合重叠的时域数据块以获得时域数据流的解码数据段的重叠/加合并器。

5. 发明申请

WO2005083681A8 DEVICE AND METHOD FOR DETERMINING A QUANTISER STEP SIZE 审中-公开
标题翻译：设备和方法确定量化步长
公开(公告)号：WO2005083681A8
公开(公告)日：2008-03-27
申请号：PCT/EP2005001652
申请日：2005-02-17
申请人： FRAUNHOFER GES FORSCHUNG , GRILL BERNHARD , SCHUG MICHAEL , TEICHMANN BODO , RETTELBACH NIKOLAUS
发明人： GRILL BERNHARD , SCHUG MICHAEL , TEICHMANN BODO , RETTELBACH NIKOLAUS
IPC分类号： G10L19/032
CPC分类号： G10L19/032
摘要： In order to determine a quantiser step size for quantising a signal comprising audio or video information, a first quantiser step size and an interference threshold are supplied (502). According to the invention, the actual interference introduced by means of the first quantizer step size is determined (504) and compared with the interference threshold (506). Even if the comparison indicates that the actually introduced interference is higher than the threshold, a second coarser quantizer step size is used (508), that is then used for the quantisation (514) if it emerges that the interference introduced by the coarser second quantizer step size is lower than the threshold or the interference introduced by the first quantiser step size (512). In this way, the quantisation interference is reduced during the coarsening of the quantisation and thus during an increase in the compression gain.
摘要翻译：具有用于确定用于量化的信号时，音频或视频信息，第一量化器步长和干扰阈值被传递（502）一个量化器步长。然后由第一量化器步长实际故障被确定（504）引入，并与故障阈值进行比较（506）是。尽管比较结果显示引入的实际干扰大于阈值，但第二较粗量化器步长被使用（508），然后将其用于量化（514），如果结果是由引入的第二较粗糙的量化器步长干扰比由第一量化器步长障碍（512）引入的阈值或更小。这将减少量化在量化的粗大化，从而导致增加的Komprimiergewinns。

6. 发明申请

WO2013087861A3 APPARATUS, METHOD AND COMPUTER PROGRAMM FOR AVOIDING CLIPPING ARTEFACTS 审中-公开
标题翻译：用于避免剪切制作的装置，方法和计算机程序
公开(公告)号：WO2013087861A3
公开(公告)日：2013-08-29
申请号：PCT/EP2012075591
申请日：2012-12-14
申请人： FRAUNHOFER GES FORSCHUNG
发明人： HEUBERGER ALBERT , EDLER BERND , RETTELBACH NIKOLAUS , GEYERSBERGER STEFAN , HILPERT JOHANNES
IPC分类号： G10L25/69 , G10L19/032
CPC分类号： G10L19/008 , G10L19/032 , G10L25/69
摘要： An audio encoding apparatus comprises an encoder for encoding a time segment of an input audio signal to be encoded to obtain a corresponding encoded signal segment. The audio encoding apparatus further comprises a decoder for decoding the encoded signal segment to obtain a re-decoded signal segment. A clipping detector is provided for analyzing the re-decoded signal segment with respect to at least one of an actual signal clipping or an perceptible signal clipping and for generating a corresponding clipping alert. The encoder is further configured to again encode the time segment of the audio signal with at least one modified encoding parameter resulting in a reduced clipping probability in response to the clipping alert.
摘要翻译：一种音频编码设备包括编码器，用于对要编码的输入音频信号的时间段进行编码以获得对应的编码信号段。音频编码设备还包括解码器，用于解码编码信号段以获得重新解码的信号段。提供限幅检测器，用于针对实际信号限幅或可感知的信号限幅中的至少一个来分析重新解码的信号段，并且用于生成相应的限幅警报。编码器进一步被配置为响应于限幅警报而用至少一个修改的编码参数再次对音频信号的时间段进行编码，从而导致减小的限幅概率。

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