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1. 发明申请

WO2010003618A3 PROVIDING A TIME WARP ACTIVATION SIGNAL AND ENCODING AN AUDIO SIGNAL THEREWITH 审中-公开
标题翻译：提供时间激活信号和编码音频信号
公开(公告)号：WO2010003618A3
公开(公告)日：2010-03-25
申请号：PCT/EP2009004874
申请日：2009-07-06
申请人： FRAUNHOFER GES FORSCHUNG , 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。

2. 发明申请

WO2009121499A8 AUDIO TRANSFORM CODING USING PITCH CORRECTION 审中-公开
标题翻译：使用倾斜校正进行音频变换编码
公开(公告)号：WO2009121499A8
公开(公告)日：2010-02-25
申请号：PCT/EP2009002118
申请日：2009-03-23
申请人： FRAUNHOFER GES FORSCHUNG , EDLER BERND , DISCH SASCHA , GEIGER RALF , BAYER STEFAN , KRAEMER ULRICH , FUCHS GUILLAUME , NEUENDORF MAX , MULTRUS MARKUS , SCHULLER GERALD , POPP HARALD
发明人： EDLER BERND , DISCH SASCHA , GEIGER RALF , BAYER STEFAN , KRAEMER ULRICH , FUCHS GUILLAUME , NEUENDORF MAX , MULTRUS MARKUS , SCHULLER GERALD , POPP HARALD
IPC分类号： G10L19/02
CPC分类号： G10L19/0212 , G10L19/022
摘要： A processed representation of an audio signal having a sequence of frames is generated by sampling the audio signal within a first and a second frame of the sequence of frames, the second frame following the first frame, the sampling using information on a pitch contour of the first and the second frame to derive a first sampled representation. The audio signal is sampled within the second and the third frame, the third frame following the second frame in the sequence of frames. The sampling uses the information on the pitch contour of the second frame and information on a pitch contour of the third frame to derive a second sampled representation. A first scaling window is derived for the first sampled representation and a second scaling window is derived for the second sampled representation, the scaling windows depending on the samplings applied to derive the first sampled representations or the second sampled representation.
摘要翻译：具有帧序列的音频信号的处理表示通过对帧序列的第一帧和第二帧中的音频信号进行采样，第一帧之后的第二帧，使用关于第一帧的音调轮廓的信息的采样第一和第二帧以得出第一采样表示。音频信号在第二帧和第三帧内采样，第三帧在帧序列中的第二帧之后。采样使用关于第二帧的音调轮廓的信息和关于第三帧的音调轮廓的信息来导出第二采样表示。对于第一采样表示导出第一缩放窗口，并且针对第二采样表示导出第二缩放窗口，缩放窗口取决于应用于导出第一采样表示或第二采样表示的采样。

3. 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。

4. 发明申请

WO2009047675A2 ENCODING AND DECODING OF AN AUDIO SIGNAL 审中-公开
标题翻译：编码和解码音频信号
公开(公告)号：WO2009047675A2
公开(公告)日：2009-04-16
申请号：PCT/IB2008054016
申请日：2008-10-02
申请人： KONINKL PHILIPS ELECTRONICS NV , VAN SCHIJNDEL NICOLLE H , RIJNBERG ADRIAAN J , VAN DE PAR STEVEN L J D E , EDLER BERND
发明人： VAN SCHIJNDEL NICOLLE H , RIJNBERG ADRIAAN J , VAN DE PAR STEVEN L J D E , EDLER BERND
IPC分类号： G10L19/02 , G10L19/022 , G10L19/24
CPC分类号： G10L19/24 , G10L19/022
摘要： An encoder comprises a processor (301) which divides an input audio signal into a plurality of frames. A first encoder unit (303) generates, for each frame, first encoding data and a residual signal and a second encoder unit (305) encodes the residual signal to generate second encoding data. A combine processor (307) generates output encoded data comprising at least the first encoding data and the second encoding data. At least one of the first encoder unit (303) and the second encoder unit (305) employs a gradual frame transition extending into a neighboring frame. The encoder includes a processor (313) which determines a time interval of each frame corresponding to the gradual frame transition and a processor (311) for delaying the inclusion in the output encoded data of at least some second encoding data for the time interval to a subsequent frame. A complementary decoder is also provided. The invention may provide improved framing and reduced delay for cascaded coder/decoder arrangements.
摘要翻译：编码器包括将输入音频信号划分成多个帧的处理器（301）。第一编码器单元（303）针对每个帧生成第一编码数据和残差信号，第二编码器单元（305）对残差信号进行编码以产生第二编码数据。组合处理器（307）生成至少包括第一编码数据和第二编码数据的输出编码数据。第一编码器单元（303）和第二编码器单元（305）中的至少一个采用延伸到相邻帧中的渐进帧转换。所述编码器包括：处理器（313），其确定与所述逐渐帧转换相对应的每个帧的时间间隔;以及处理器（311），用于将所述时间间隔中的至少一些第二编码数据的所述输出编码数据中的所述输入编码数据包含在所述处理器后续框架。还提供了互补解码器。本发明可以提供用于级联编码器/解码器装置的改进的成帧和减小的延迟。

5. 发明申请

WO2008053029A3 METHOD FOR CONCEALING A PACKET LOSS 审中-公开
标题翻译：用于隐藏分组丢失的方法
公开(公告)号：WO2008053029A3
公开(公告)日：2008-06-26
申请号：PCT/EP2007061791
申请日：2007-10-31
申请人： UNIV HANNOVER , NGUYEN DIEU THANH , EDLER BERND , OSTERMANN JOERN , STEFANOSKI NIKOLCE
发明人： NGUYEN DIEU THANH , EDLER BERND , OSTERMANN JOERN , STEFANOSKI NIKOLCE
IPC分类号： H04N19/895 , H04N7/24 , H04N7/26 , H04N7/36
CPC分类号： H04N21/2389 , H04N19/102 , H04N19/139 , H04N19/142 , H04N19/177 , H04N19/188 , H04N19/30 , H04N19/34 , H04N19/44 , H04N19/46 , H04N19/61 , H04N19/895 , H04N21/4385
摘要： A method of concealing a packet loss during video decoding is provided. An input stream having a plurality of network abstraction layer units NAL is received. A loss of a network abstraction layer unit in a group of pictures in the input stream is detected. A valid network abstraction layer unit order from the available network abstraction layer units is outputted. The network abstraction layer unit order is received by a video coding layer (VCL) and data is outputted.
摘要翻译：提供了在视频解码期间隐藏分组丢失的方法。接收具有多个网络抽象层单元NAL的输入流。检测输入流中一组图像中网络抽象层单元的丢失。输出来自可用网络抽象层单元的有效网络抽象层单元顺序。网络抽象层单元顺序由视频编码层（VCL）接收并输出数据。

6. 发明申请

WO2006108654A2 METHOD AND APPARATUS FOR ENHANCED VIDEO CODING 审中-公开
标题翻译：用于增强视频编码的方法和装置
公开(公告)号：WO2006108654A2
公开(公告)日：2006-10-19
申请号：PCT/EP2006003410
申请日：2006-04-13
申请人： UNIV HANNOVER , VATIS YURI , EDLER BERND , WASSERMANN INGOLF , NGUYEN DIEU THANH , OSTERMANN JOERN
发明人： VATIS YURI , EDLER BERND , WASSERMANN INGOLF , NGUYEN DIEU THANH , OSTERMANN JOERN
IPC分类号： H04N7/26
CPC分类号： H04N19/59 , H04N19/117 , H04N19/136 , H04N19/174 , H04N19/176 , H04N19/182 , H04N19/187 , H04N19/196 , H04N19/31 , H04N19/33 , H04N19/46 , H04N19/463 , H04N19/51 , H04N19/523 , H04N19/593 , H04N19/61
摘要： Standard video compression techniques apply motion-compensated prediction combined with transform coding of the prediction error. In the context of prediction with fractional-pel motion vector resolution it was shown, that aliasing components contained in an image signal are limiting the prediction efficiency obtained by motion compensation. In order to consider aliasing, quantization and motion estimation errors, camera noise, etc., we analytically developed a twodimensional (2D) non-separable interpolation filter, which is independently calculated for each frame by minimizing the prediction error energy. For every fractional-pel position to be interpolated, an individual set of 2D filter coefficients is determined. Since transmitting filter coefficients as side information results in an additional bit rate, which is almost constant for different image resolutions and total bit rates, the loss in coding gain increases when total bit rates sink. Therefore, we developed an algorithm, which regards the non-separable two-dimensional filter as a polyphase filter. For each frame, predicting the interpolation filter impulse response through evaluation of the polyphase filter, we only have to encode the prediction error of the filter coefficients.
摘要翻译：标准视频压缩技术应用运动补偿预测与预测误差的变换编码相结合。在分数像素运动矢量分辨率的预测的上下文中，显示了包含在图像信号中的混叠分量限制了通过运动补偿获得的预测效率。为了考虑混叠，量化和运动估计误差，摄像机噪声等，我们分析开发了一种二维（2D）不可分离内插滤波器，通过最小化预测误差能量对每帧进行独立计算。对于要插值的每个小数像素位置，确定一组二维滤波器系数。由于发送滤波器系数作为侧信息导致附加比特率，其对于不同的图像分辨率和总比特率几乎是恒定的，所以当总比特率下降时，编码增益的损失增加。因此，我们开发了一种将不可分离的二维滤波器作为多相滤波器的算法。对于每个帧，通过评估多相滤波器来预测内插滤波器脉冲响应，我们只需要对滤波器系数的预测误差进行编码。

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