公开(公告)号：US06272258B1

公开(公告)日：2001-08-07

申请号：US09215486

申请日：1998-12-18

申请人： Gerhard Dickopp ,  Thomas Vaupel

发明人： Gerhard Dickopp ,  Thomas Vaupel

IPC分类号： G06K936

CPC分类号： H04N19/99 ,  G06T9/001

摘要： In a method for fractal coding of signals, in which a domain block d is investigated for a range block r to be transmitted from an original signal, so that, after using the calculation rule r*=v·d+b, an approximated range block r* is generated, v·d being a linear function and b being an offset vector, the offset vector b in general has different components b=(b1, b2, . . . , bn) the offset vector b preferably being composed of weighted orthogonal basic functions of an orthogonal transformation.

摘要翻译： 在用于对原始信号发送的范围块r进行域块d的信号的分形编码的方法中，使用计算规则r * = v.d + b之后的近似范围 生成块r *，vd是线性函数，b是偏移向量，偏移向量b通常具有不同的分量b =（b1，b2，...，bn），偏移矢量b优选地由加权正交 正交变换的基本功能。

公开(公告)号：US5227990A

公开(公告)日：1993-07-13

申请号：US824848

申请日：1992-01-17

申请人： Thomas Vaupel ,  Detlef Krahe ,  Gerhard Dickopp

发明人： Thomas Vaupel ,  Detlef Krahe ,  Gerhard Dickopp

IPC分类号： H03M7/30 ,  H04B1/66 ,  H04B14/00

CPC分类号： H04B1/66

摘要： A signal is divided by windows into successive blocks that overlap at least by 50% and signal sections contained in the blocks are evaluated by analysis windows. The signal sections contained in the blocks are subjected to a transformation which permits sub-sampling with compensation of the aliasing components such as, for example, the "time domain aliasing cancellation" method. The spectra resulting from the transformation are subsequently coded, transmitted, decoded after transmission and changed back to signal sections by re-transformation. The blocks including the signal sections are evaluated by synthesis windows and are joined together in an overlapping fashion. The window functions of the synthesis windows are determined in dependence on the window functions of the corresponding analysis windows in the overlap region.

摘要翻译： 信号被窗口划分成至少重叠50％的连续块，块中包含的信号段由分析窗口进行评估。 包含在块中的信号段经过变换，其允许通过诸如“时域混叠消除”方法的混叠分量的补偿进行二次采样。 随后，在变换之后编码，传输，解码，并通过重新转换回信号部分。 包括信号部分的块通过合成窗口进行评估，并以重叠的方式连接在一起。 根据重叠区域中对应的分析窗口的窗口函数来确定合成窗口的窗口函数。

公开(公告)号：US5384811A

公开(公告)日：1995-01-24

申请号：US853751

申请日：1992-08-24

申请人： Gerhard Dickopp ,  Thomas Vaupel ,  Detlef Krahe

发明人： Gerhard Dickopp ,  Thomas Vaupel ,  Detlef Krahe

IPC分类号： H04B1/66 ,  H03M7/30 ,  H04B14/00 ,  H04B14/04

CPC分类号： H04B1/66

摘要： The process disclosed enables the "time domain aliasing cancellation" method to be extended systematically to larger block overlapping. The boundary conditions which, when using various modified transforms, the analysis and synthesis windows must comply with, can thus be given. The transform series must also be included in the design of each analysis and synthesis window in order to optimize for a given application, because this changes the boundry conditions with which an analysis window function can be determined. Design for analysis and synthesis windows have shown that analysis and synthesis properties obtained by multiple block overlapping are significantly better than those obtained by convential double block overlapping. The systematic method of the invention offers numerous possibilites for optimizing windows in special applications.

摘要翻译： PCT No.PCT / EP90 / 01683 Sec。 371日期：1992年8月24日 102（e）日期1992年8月24日PCT 1990年10月8日PCT PCT。 WO91 / 05412 PCT公开 日期1991年4月18日。所公开的过程使得“时域混叠消除”方法能够系统地扩展到更大的块重叠。 当使用各种修改的变换时，分析和合成窗口必须符合的边界条件可以被给出。 变换序列还必须包含在每个分析和综合窗口的设计中，以便为给定的应用程序进行优化，因为这会改变可以确定分析窗口函数的边界条件。 分析和综合窗口的设计表明，通过多重重叠获得的分析和合成性能明显优于通过常规双块重叠获得的分析和合成性质。 本发明的系统方法提供了在特殊应用中优化窗口的许多可能性。

公开(公告)号：US5179623A

公开(公告)日：1993-01-12

申请号：US498753

申请日：1990-03-26

申请人： Gerhard Dickopp ,  Detlef Krahe ,  Thomas Vaupel

发明人： Gerhard Dickopp ,  Detlef Krahe ,  Thomas Vaupel

IPC分类号： H04B14/04 ,  H04B1/66

CPC分类号： H04B1/665

摘要： A method of transmitting an audio signal wherein the audio signal is partitioned into successive (in time) blocks by means of time windows, the signal parts contained in the blocks are converted to short-time frequency spectrums by transformation, subsequently the short-time frequency spectrums are coded on the basis of psycho-acoustical masking laws and are transmitted. The received coded signals are decoded, the short-time frequency spectrum signals are brought back into the time domain through re-transformation, and finally the blocks present in the time domain are assembled. Moreover, the blocks are partitioned into sub-blocks and, in case of signal level changes from one block to the other which exceed a predetermined value, the signal parts in the sub-blocks are subjected to a compression prior to transformation and to a complementary expansion after the re-transformation. To improve the signal-to-noise ratio, the signal is amplified and/or attenuated in the sub-blocks during the compression dependent on the average signal powers in the respective sub-blocks.

摘要翻译： PCT No.PCT / EP89 / 00568 Sec。 371日期1991年3月25日 102（e）1991年3月25日PCT提交1989年5月24日PCT公布。 第WO89 / 11759号公报 日期：1989年11月30日。一种发送音频信号的方法，其中通过时间窗将音频信号划分为连续（时间上）的块，通过变换将包含在块中的信号部分转换成短时频谱 随后，基于心理声学掩蔽定律对短时频谱进行编码并传输。 接收到的编码信号被解码，短时间频谱信号通过重新转换回到时域，最后组装存在于时域中的块。 此外，块被划分成子块，并且在从一个块到另一个块的信号电平变化超过预定值的情况下，子块中的信号部分在变换之前被压缩并且被互补 扩建后重新转型。 为了提高信噪比，信号在压缩期间在子块中被放大和/或衰减，取决于相应子块中的平均信号功率。

公开(公告)号：US5361278A

公开(公告)日：1994-11-01

申请号：US853752

申请日：1992-08-24

申请人： Thomas Vaupel ,  Detlef Krahe

发明人： Thomas Vaupel ,  Detlef Krahe

IPC分类号： G06F17/14 ,  H04B1/66 ,  H04B14/00 ,  H04B14/04 ,  G10L3/02 ,  G10L5/00

CPC分类号： H04B1/66

摘要： A method of transmitting an analog signal including the steps of converting the analog signal into a digital signal and using windows to subdivide the digital signal into successive blocks. The blocks are evaluated for level changes, and when a level change is below a predetermined level the blocks are overlapped by 50%. The signal segments within the blocks assessed using analysis windows. The signal segments are transformed using subsampling and time domain aliasing cancellation to compensate for aliasing components. The signal segments are inverse transformed and assessed using synthesis windows. The blocks are rejoined in overlapping fashion. When the level change is above the predetermined level the signals are subdivided into blocks and the blocks are overlapped by less than 50%, or not overlapped at all. The signal segments are fully scanned, compressed and transformed. The signal segments are finally inverse transformed and expanded.

摘要翻译： PCT No.PCT / EP90 / 01661 Sec。 371日期：1992年8月24日 102（e）日期1992年8月24日PCT 1990年10月4日PCT PCT。 公开号WO91 / 05411 日期：1991年4月18日。一种发送模拟信号的方法，包括以下步骤：将模拟信号转换为数字信号，并使用窗口将数字信号细分为连续的块。 评估块的电平变化，当电平变化低于预定电平时，块重叠50％。 使用分析窗口评估块内的信号段。 使用子采样和时域混叠消除来变换信号段以补偿混叠分量。 使用合成窗口对信号段进行逆变换和评估。 块以重叠的方式重新连接。 当电平变化高于预定电平时，信号被细分成块，块重叠小于50％，或者根本不重叠。 信号段被完全扫描，压缩和变换。 信号段最终被逆变换和扩展。