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1. 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。

2. 发明申请

WO9922451A3 METHODS AND DEVICES FOR ENCODING AUDIO SIGNALS AND METHODS AND DEVICES FOR DECODING A BIT STREAM 审中-公开
标题翻译：用于解码比特流的方法和设备，用于编码音频信号的方法和装置
公开(公告)号：WO9922451A3
公开(公告)日：1999-07-29
申请号：PCT/EP9804200
申请日：1998-07-07
申请人： FRAUNHOFER GES FORSCHUNG , GRILL BERNHARD , HERRE JUERGEN , TEICHMANN BODO , BRANDENBURG KARLHEINZ , GERHAEUSER HEINZ
发明人： GRILL BERNHARD , HERRE JUERGEN , TEICHMANN BODO , BRANDENBURG KARLHEINZ , GERHAEUSER HEINZ
IPC分类号： G10L19/02 , G10L19/00 , H03H17/00 , H03M7/30 , H04B1/66 , H04B14/04
CPC分类号： H04B1/665 , H04B14/046
摘要： The invention makes it possible to combine a scaleable audio coder with TNS technology. According to the inventive method for encoding time signals (x1) sampled in a first sampling rate, second time signals (x2) with a sampling rate smaller than the first sampling rate are generated (12). The second time signals (x2) are then encoded (14) according to a first coding algorithm, and written into a bit stream (xAUS) (16). The encoded second time signals (x2c) are then decoded (14) again and are transformed (23, 24) into the frequency range, as are the first time signals. TNS prediction coefficients are then calculated (25) from a spectral representation of the first time signals (X1). The transformed output signal (X2cd) of the coder/decoder (14) with the first coding algorithm and the spectral representation (X1) of the first time signal are subjected to a prediction of the frequency (27) in order to obtain spectral residual values for both signals using the prediction coefficients calculated on the basis of the first time signals alone. These two signals are evaluated against each other (26, 28). The evaluated spectral residual values (Xb) are then encoded by means of a second coding algorithm in order to obtain coded evaluated spectral residual values (Xcb). These evaluated spectral residual values are written into the bit stream (xAUS) in addition to side information with the prediction coefficients.
摘要翻译：本发明允许与TNS技术可扩展的Audiocodieres的组合。在用于在第一采样时间的信号（X1）取样编码的方法是第一第二时间信号（×2）产生（12），其采样速率为小于所述第一采样率。现在，在根据第一编码算法的第二次信号（×2）进行编码（14），并在比特流（XOFF）写入（16）。编码的第二时间信号（X2C），但是，再次解码（14）和就像变换到频率范围（23，24）在第一时间信号。从第一时间信号（X1）的频谱表示是计算（25）TNS预测系数。所述变换后的输出信号（X2CD）编码器/解码器Dieres（14）与所述第一编码算法，如进行的预测在频率的第一时间信号的频谱表示（X1）（27）以获得两个信号，频谱残余值的其中仅由于用于计算预测系数的第一次信号。这两个信号相对于彼此（26，28）进行评价。所评估的残余频谱值（XB）至由第二编码算法（30），以获得编码的评价的残余频谱值（XCB）具有所计算的预测系数的相邻页的信息，也是在比特流（XOFF）写入随后进行编码。

3. 发明申请

WO0143503A3 METHOD AND DEVICE FOR PROCESSING A STEREO AUDIO SIGNAL 审中-公开
标题翻译：方法和装置处理的立体声音频信号
公开(公告)号：WO0143503A3
公开(公告)日：2002-05-10
申请号：PCT/EP0012352
申请日：2000-12-07
申请人： FRAUNHOFER GES FORSCHUNG , TEICHMANN BODO , KUNZ OLIVER , HERRE JUERGEN , PEICHL KLAUS , BEER MICHAEL
发明人： TEICHMANN BODO , KUNZ OLIVER , HERRE JUERGEN , PEICHL KLAUS , BEER MICHAEL
IPC分类号： H04H20/88 , G10L19/008 , H03M7/30 , H04S1/00
CPC分类号： H04S1/00 , G10L19/008
摘要： The invention relates to a device for processing a stereo audio signal comprising a first channel (L) and a second channel (R). The stereo signal is analysed (12) for obtaining a measure for a bit quantity, whereby said quantity is required by a coder for coding the stereo audio signal using a coding algorithm. The first and the second channel are subsequently modified (14) when the measure for the bit quantity is greater than a predetermined value. Modification is carried out in such a way that the energy of a sum signal of the first and second modified channel (L', R') bears a predetermined ratio in relation to the energy of a sum signal of the first and second channel and that a difference signal of the first and second modified channel is muffled in relation to the difference signal of the first and second channel. The side channel is muffled, especially for audio coders that require a constant output bit rate, when the coding of stereo audio signals cannot observe the output bit rate of the coder. Stereo channel separation is thus abandoned in favour of an increased audio bandwidth or a reduction of quantisation interference.
摘要翻译：在一种用于处理具有第一信道（L）和第二信道（R）立体声信号的装置，该立体声信号进行分析（12），以获得用于比特由编码器到所需的量的量度使用的编码算法进行编码的立体声音频信号。然后，第一和第二信道将被修改（14），当度量是大于超过预定值的位的数量，其中所述修饰是这样vonstatten从第一和第二修改的信道求和信号的能量（L' ，R“）处于预定的关系从所述第一和第二信道和信号的能量，而且差分信号从所述第一和第二修改的信道至约来自第一和第二信道的差信号被衰减。特别是对于需要侧信道的一个恒定的输出比特率在立体声音频信号的情况下的音频编码器，该编码不能保持编码器的输出位速率，烟雾存储器O，有利于增加音频带宽和减少量化噪声的从而立体声声道分离被放弃。

4. 发明申请

WO02058051A2 METHOD AND DEVICE FOR PRODUCING A SCALABLE DATA STREAM, AND METHOD AND DEVICE FOR DECODING A SCALABLE DATA STREAM WHILE TAKING A BIT BANK FUNCTION INTO ACCOUNT 审中-公开
标题翻译：方法和设备，用于产生可扩展的数据流，方法和设备，用于解码可扩展的数据流中的比特储蓄银行THE LIGHT
公开(公告)号：WO02058051A2
公开(公告)日：2002-07-25
申请号：PCT/EP0200295
申请日：2002-01-14
申请人： FRAUNHOFER GES FORSCHUNG , SPERSCHNEIDER RALPH , TEICHMANN BODO , LUTZKY MANFRED
发明人： SPERSCHNEIDER RALPH , TEICHMANN BODO , LUTZKY MANFRED
IPC分类号： H04N7/26 , G10L19/12 , G10L19/24 , H04L12/58 , G10L19/00
CPC分类号： G10L19/24
摘要： The invention relates to a method for producing a scalable data stream from one or more blocks of output data of a first encoder and from one or more blocks of output data of a second encoder. According to this method, a destination data block (306) is written for a current section of an input signal. In addition, output data (312) of the second decoder that represents a preceding section of the input signal is written, in a direction of transmission, from an encoder to a decoder behind the destination data block (306). When the output data (312) of the second encoder is written for a preceding section of the input signal, the output data (310) of the second encoder that represents the current section of the input signal is written. In order to indicate where the output data of the second encoder for the preceding section ends, and where the output data of the second encoder for the current section begins, buffer information (314) is written into the scalable data stream. In order to provide that output data of a preceding section follows a destination data block for the current section, a bit bank function can be implemented in the scalable encoder and can be easily indicated in the bit stream.
摘要翻译：用于产生用于进行解码的可分级数据流的可分级数据流，并且方法和装置，并考虑到一个位节省银行功能ZusammenfassungIn的方法，用于从一个或一个第一编码器的输出数据的几个块生成一个可扩展的数据流和从一个或多个块的方法和装置第二编码器，用于写入的单个交叉信号的当前部分中的确定数据块（306）的输出数据。此外代表输入信号的传输方向从编码器确定的数据块（306）之后的前部到一个解码器中的第二编码器的Ausgangsda个（312）被写入。如果输出数据（312）写入所述第二编码器，用于将输入信号的先前部分，表示所述输入信号的当前部分中的第二编码器的输出数据（310）被写入。以指示在何处结束第二编码器的输出数据进行上一节，并开始对当前部分中的第二编码器的输出数据，缓冲器信息（314）被写入到可分级数据流。在先前帧中的该输出数据遵循的AK-图阿尔部的确定的数据块，在可伸缩编码器位节省银行可以被实现并在比特流中被简单地用信号通知。

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