公开(公告)号：WO2007007263A3

公开(公告)日：2007-01-18

申请号：PCT/IB2006/052309

申请日：2006-07-07

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  CODING TECHNOLOGIES AB ,  SCHUIJERS, Erik, G., P. ,  HOTHO, Gerard, H. ,  PURNHAGEN, Heiko ,  SCHILDBACH, Wolfgang, A. ,  HORICH, Holger ,  KJORLING, Hans, M., K. ,  RÖDÉN, Karl, J.

Inventor： SCHUIJERS, Erik, G., P. ,  HOTHO, Gerard, H. ,  PURNHAGEN, Heiko ,  SCHILDBACH, Wolfgang, A. ,  HORICH, Holger ,  KJORLING, Hans, M., K. ,  RÖDÉN, Karl, J.

IPC: G10L19/00 ,  H04S3/00

Abstract: An audio encoder (109) has a hierarchical encoding structure and generates a data stream comprising one or more audio channels as well as parametric audio encoding data. The encoder (109) comprises an encoding structure processor (305) which inserts decoder tree structure data into the data stream. The decoder tree structure data comprises at least one data value indicative of a channel split characteristic for an audio channel at a hierarchical layer of the hierarchical decoder structure and may specifically specify the decoder tree structures to be applied by a decoder. A decoder (115) comprises a receiver (401) which receives the data stream and a decoder structure processor (405) for generating the hierarchical decoder structure in response to the decoder tree structure data. A decode processor (403) then generates output audio channels from the data stream using the hierarchical decoder structure.

公开(公告)号：WO2006048203A1

公开(公告)日：2006-05-11

申请号：PCT/EP2005/011586

申请日：2005-10-28

Applicant: CODING TECHNOLOGIES AB ,  KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  VILLEMOES, Lars ,  KJÖRLING, Kristofer ,  PURNHAGEN, Heiko ,  RÖDEN, Jonas ,  BREEBAART, Jeroen ,  HOTHO, Gerard

Inventor： VILLEMOES, Lars ,  KJÖRLING, Kristofer ,  PURNHAGEN, Heiko ,  RÖDEN, Jonas ,  BREEBAART, Jeroen ,  HOTHO, Gerard

IPC: G10L19/00

CPC classification number: G10L19/008 ,  G10L19/04 ,  H04S2420/03

Abstract: For a multi-channel reconstruction of audio signals based on at least one base channel, an energy measure is used for compensating energy losses due to an predictive upmix. The energy measure can be applied in the encoder or the decoder. Furthermore, a decorrelated signal is added to output channels generated by an energy-loss introducing upmix procedure. The energy of the decorrelated signal is smaller than or equal to an energy error introduced by the predictive upmix. Thus, problems occurring for prediction based up-mix methods such as up-mixing signals that are coded with High Frequency Reconstruction techniques are solved, so that the correct correlation between the up-mixed channels is obtained or the up-mix is adapted to arbitrary down-mixes.

Abstract translation: 对于基于至少一个基本信道的音频信号的多声道重建，能量测量被用于由于预测上混补偿能量损失。 能量测量可以应用于编码器或解码器。 此外，将去相关信号添加到通过能量损失引入上混程序产生的输出通道。 解相关信号的能量小于或等于由预测上混引入的能量误差。 因此，解决了用于基于预测的上混合方法（例如用高频重建技术编码的上混合信号）所出现的问题，从而获得上混合信道之间的正确相关性，或者将混合信号适配为任意的 下混合。

公开(公告)号：WO2006008697A1

公开(公告)日：2006-01-26

申请号：PCT/IB2005/052293

申请日：2005-07-11

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  CODING TECHNOLOGIES AB ,  BREEBAART, Dirk, J. ,  SCHUIJERS, Erik, G., P. ,  PURNHAGEN, Heiko ,  RÖDÉN, Karl, J.

Inventor： BREEBAART, Dirk, J. ,  SCHUIJERS, Erik, G., P. ,  PURNHAGEN, Heiko ,  RÖDÉN, Karl, J.

IPC: G10L19/00

CPC classification number: H04S5/005 ,  G10L19/008

Abstract: A device (1) for converting a first number (M) of input audio channels into a second, larger number (N) of output audio channels comprises: decorrelation units (3) for decomposing the input audio channels into a set of decorrelated auxiliary channels, at least one upmix unit (4) for combining the decorrelated auxiliary channels into the output audio channels, and at least one pre-processing unit (2) for pre-processing the input audio channels and feeding the pre-processed input audio channels to the decorrelation units (3). The pre-processing unit (2) and the upmix unit (4) are preferably controlled by audio parameters.

Abstract translation: 用于将输入音频通道的第一数量（M）转换为第二，更大数量（N）的输出音频通道的设备（1）包括：用于将输入音频通道分解为一组去相关的辅助通道的解相关单元（3） 至少一个用于将解相关辅助通道组合成输出音频通道的上混单元（4），以及至少一个预处理单元（2），用于预处理输入音频通道并将预处理的输入音频通道馈送到 去相关单位（3）。 预处理单元（2）和上混单元（4）优选地由音频参数控制。

公开(公告)号：WO2008046492A1

公开(公告)日：2008-04-24

申请号：PCT/EP2007/008332

申请日：2007-09-25

Applicant: CODING TECHNOLOGIES AB ,  SCHUG, Michael

Inventor： SCHUG, Michael

IPC: G10L19/02 ,  H03M7/30

CPC classification number: G10L19/032

Abstract: An apparatus for encoding an information signal having discrete values comprises a quantizer having a quantizer border, wherein the quantizer is adapted so that a discrete value above the quantization border is quantized to a quantization index, which is different from a quantization index obtained by quantizing a discrete value below the quantization border, a controller for modifying the quantization border, wherein the quantizer having a first quantization border setting is adapted to generate a first set of quantization indices for the discrete values, and wherein the quantizer having a second modified quantization border setting is adapted to generate a second set of quantization indices, and an output interface for outputting an encoded information signal which is either based on the first set of quantization indices or the second set of quantization indices dependent on a decision function.

Abstract translation: 用于对具有离散值的信息信号进行编码的装置包括具有量化器边界的量化器，其中量化器适于使得量化边界上方的离散值被量化为量化指标，其不同于通过量化 离散值低于量化边界，用于修改量化边界的控制器，其中具有第一量化边界设置的量化器适于生成用于离散值的第一组量化索引，并且其中量化器具有第二修改量化边界设置 适于产生第二组量化索引，以及输出接口，用于输出基于第一组量化索引的编码信息信号或者取决于决策函数的第二组量化索引。

公开(公告)号：WO2008003467A1

公开(公告)日：2008-01-10

申请号：PCT/EP2007/005887

申请日：2007-07-03

Applicant: CODING TECHNOLOGIES AB ,  VILLEMOES, Lars

Inventor： VILLEMOES, Lars

IPC: H03H17/02 ,  G10L19/02

CPC classification number: H03H17/0266

Abstract: A filter unit (102) for generating new subband filter impulse responses from input subband filter impulse responses comprises a processor (820) for examining the input filter impulse responses from at least two input subband filter input responses to find input filter impulse responses having higher values, and at least one filter impulse response having a value being lower than the higher values, and a filter calculator (305) for generating said new subband filter impulse responses using the filter impulse response values having the higher values, wherein said new subband filter impulse responses do not include the input filter impulse responses having the lower value or comprise zero-valued filter impulse responses corresponding to filter impulse responses having the lower value.

Abstract translation: 用于从输入子带滤波器脉冲响应产生新的子带滤波器脉冲响应的滤波器单元（102）包括用于检查来自至少两个输入子带滤波器输入响应的输入滤波器脉冲响应的处理器（820），以找到具有较高值的​​输入滤波器脉冲响应 以及具有低于较高值的值的至少一个滤波器脉冲响应，以及用于使用具有较高值的​​滤波器脉冲响应值产生所述新的子带滤波器脉冲响应的滤波器计算器（305），其中所述新的子带滤波器脉冲 响应不包括具有较低值的输入滤波器脉冲响应或包括对应于具有较低值的滤波器脉冲响应的零值滤波器脉冲响应。

公开(公告)号：WO2007085275A1

公开(公告)日：2007-08-02

申请号：PCT/EP2006/008565

申请日：2006-09-01

Applicant: CODING TECHNOLOGIES AB ,  VILLEMOES, Lars

Inventor： VILLEMOES, Lars

IPC: H03H17/02

CPC classification number: G10L19/02 ,  G10L19/0204 ,  H03H17/0266 ,  H03H17/0294 ,  H03H2218/04

Abstract: A filter apparatus for filtering a time domain input signal to obtain a time domain output signal, which is a representation of the time domain input signal filtered using a filter characteristic having an non-uniform amplitude/frequency characteristic, comprises a complex analysis filter bank (101) for generating a plurality of complex subband signals from the time domain input signals, a plurality of intermediate filters, wherein at least one of the intermediate filters (102) of the plurality of the intermediate filters has a non-uniform amplitude/frequency characteristic, wherein the plurality of intermediate filters have a shorter impulse response compared to an impulse response of a filter having the filter characteristic, and wherein the non-uniform amplitude/frequency characteristics of the plurality of intermediate filters together represent the non-uniform filter characteristic, and a complex synthesis filter bank (103) for synthesizing the output of the intermediate filters to obtain the time domain output signal.

Abstract translation: 一种用于对时域输入信号进行滤波以获得时域输出信号的滤波器装置，其是使用具有不均匀幅度/频率特性的滤波器特性滤波的时域输入信号的表示，包括复分析滤波器组（ 101），用于从时域输入信号产生多个复数子带信号，多个中间滤波器，其中多个中间滤波器中的中间滤波器（102）中的至少一个具有不均匀的幅度/频率特性 ，其中与具有滤波器特性的滤波器的脉冲响应相比，多个中间滤波器具有较短的脉冲响应，并且其中多个中间滤波器的非均匀幅度/频率特性一起表示非均匀滤波器特性， 以及用于合成中间滤波器t的输出的复合成滤波器组（103） o获得时域输出信号。

公开(公告)号：WO2006108543A1

公开(公告)日：2006-10-19

申请号：PCT/EP2006/003097

申请日：2006-04-05

Applicant: CODING TECHNOLOGIES AB ,  FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V. ,  KJOERLING, Kristofer ,  VILLEMOES, Lars ,  HERRE, Juergen ,  DISCH, Sascha

Inventor： KJOERLING, Kristofer ,  VILLEMOES, Lars ,  HERRE, Juergen ,  DISCH, Sascha

IPC: H04S3/00

CPC classification number: H04S7/307 ,  G10L19/008 ,  G10L19/02 ,  G10L19/26 ,  H04S3/00 ,  H04S5/005 ,  H04S2420/03

Abstract: The temporal envelope of a decorrelated signal derived from an original signal can be shaped without introducing additional distortion, when a spectral flattener is used to spectrally flatten the spectrum of the decorrelated signal and the original signal prior to using the flattened spectra for deriving a gain factor describing the energy distribution between the flattened spectra, and when the so derived gain factor is used by an envelope shaper to timely shape the envelope of the decorrelated signal .

Abstract translation: 当使用光谱平滑变压器在去除相关信号的频谱和原始信号之前，在使用平坦的频谱以导出增益因子之前，可以对来自原始信号的解相关信号的时间包络进行成形，而不引入额外的失真 描述了平坦化光谱之间的能量分布，以及何时得到的增益因子被信封整形器用于及时地形成去相关信号的包络。

公开(公告)号：WO2006048204A1

公开(公告)日：2006-05-11

申请号：PCT/EP2005/011587

申请日：2005-10-28

Applicant: CODING TECHNOLOGIES AB ,  KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  VILLEMOES, Lars ,  KJÖRLING, Kristofer ,  PURNHAGEN, Heiko ,  RÖDEN, Jonas ,  BREEBAART, Jeroen ,  HOTHO, Gerard

Inventor： VILLEMOES, Lars ,  KJÖRLING, Kristofer ,  PURNHAGEN, Heiko ,  RÖDEN, Jonas ,  BREEBAART, Jeroen ,  HOTHO, Gerard

IPC: G10L19/00

CPC classification number: G10L19/008 ,  G10L19/04 ,  H04S2420/03

Abstract: A Multi-channel synthesiser for generating at least three output channels (110, 111, 112) using an input signal having at least one base channel, the base channel being derived from the original multi-channel signal (101, 102, 103), the input signal further including at least two different up-mixing parameters, and an up-mixer mode indication (1005) indicating, in a first state that a first up-mixing rule is to be performed, and, indicating, in a second state, that a different second up-mixing rule is to be performed, uses an up-mixer for up-mixing the at least one base channel using the at least two different up-mixing parameters based on the first or the second up-mixing rule in response to the up-mixer mode indication (1005) so that the at least three output channels (110, 111, 112) are obtained.

Abstract translation: 一种多通道合成器，用于使用具有至少一个基本通道的输入信号来产生至少三个输出通道（110,111,112），所述基本通道从原始多通道信号（101,102,103）导出， 所述输入信号还包括至少两个不同的上混参数，以及上混合模式指示（1005），在第一状态下指示要执行第一加混规则，并且以第二状态 要执行不同的第二上调规则，使用上混合器，用于使用基于第一或第二上混合规则的至少两个不同的上混参数来上混合至少一个基本信道 响应于上混频器模式指示（1005），使得获得至少三个输出通道（110,111,112）。

公开(公告)号：WO2004097795A3

公开(公告)日：2004-11-11

申请号：PCT/EP2004/004608

申请日：2004-04-30

Applicant: CODING TECHNOLOGIES AB ,  PURNHAGEN, Heiko

Inventor： PURNHAGEN, Heiko

IPC: G10L19/14

Abstract: The present invention provides improvements to prior art audio codecs applied to voice signals like human speech. These improvements are accomplished by adaptively processing (501) the signal in the decoder to reduce perceived distortion introduced by the coding process, primarily for voiced parts of the audio signal. The signal processing is adaptively controlled by signal analysis in the encoder or in the decoder. The invention can be applied as post-processing in a general audio codec or can be applied as intermediate processing step in a general audio codec that utilizes high frequency reconstruction (HFR) techniques.

公开(公告)号：WO2007068296A1

公开(公告)日：2007-06-21

申请号：PCT/EP2006/005143

申请日：2006-05-30

Applicant: CODING TECHNOLOGIES AB ,  SK TELECOM CO., LTD. ,  EHRET, Andreas ,  HOERICH, Holger ,  SCHUG, Michael ,  SCHNEIDER, Andreas

Inventor： EHRET, Andreas ,  HOERICH, Holger ,  SCHUG, Michael ,  SCHNEIDER, Andreas

IPC: H04L29/06

CPC classification number: H04L65/602 ,  H04L1/0083 ,  H04L29/06027 ,  H04L65/607

Abstract: An apparatus for generating a data stream having a series of segments using data organized in subsequent data frames. The apparatus comprises a packetiser for packetising data from a data frame into the series of segments having a first segment and a second segment, where the second segment has interpretable data entities and has a data entity fragment, the data entity fragment including only a part of an interpretable data entity preceding an interpretable data entity. The apparatus comprises furthermore an information block adder for adding an information block associated with the second segment, the information block indicating an entry point into the second segment, the entry point indicating a start of the interpretable data entity following the data entity fragment.

Abstract translation: 一种用于使用在后续数据帧中组织的数据来生成具有一系列段的数据流的装置。 该装置包括分组器，用于将数据从数据帧打包成具有第一段和第二段的一系列段，其中第二段具有可解释数据实体并具有数据实体段，该数据实体段仅包括一部分 在可解释数据实体之前的可解释数据实体。 该装置还包括用于将与第二段相关联的信息块相加的信息块加法器，将指示入口点的信息块添加到第二段中，该入口点指示跟随数据实体片段的可解释数据实体的开始。