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公开(公告)号：US20120039477A1
公开(公告)日：2012-02-16
申请号：US13265423
申请日：2010-04-14
申请人： Erik Gosuinus Petrus Schijers , Arnoldus Werner Johannes Oomen , Fransiscus Marinus Jozephus De Bont , Mykola Ostrovskyy , Adriaan Johannes Rijnberg , Jeroen Gerardus Henricus Koppens
发明人： Erik Gosuinus Petrus Schijers , Arnoldus Werner Johannes Oomen , Fransiscus Marinus Jozephus De Bont , Mykola Ostrovskyy , Adriaan Johannes Rijnberg , Jeroen Gerardus Henricus Koppens
IPC分类号： H04R5/00
CPC分类号： G10L19/008 , H04R5/033 , H04S2400/01 , H04S2420/01 , H04S2420/03
摘要： An audio synthesizing apparatus receives an encoded signal comprising a downmix signal and parametric extension data for expanding the downmix signal to a multi-sound source signal. A decomposition processor (205) performs a signal decomposition of the downmix signal to generate at least a first signal component and a second signal component, where the second signal component is at least partially decorrelated with the first signal component. A position processor (207) determines a first spatial position indication for the first signal component in response to the parametric extension data and a binaural processor (211) synthesizes the first signal component based on the first spatial position indication and the second signal component to originate from a different direction. The invention may provide improved spatial experience from e.g. headphones by using a direct synthesis of a main directional signal from the appropriate position rather than as a combination of signals from virtual loudspeaker positions.
摘要翻译： 音频合成装置接收包括下混合信号的编码信号和用于将下混合信号扩展为多声源信号的参数扩展数据。 分解处理器（205）执行降混信号的信号分解以产生至少第一信号分量和第二信号分量，其中第二信号分量与第一信号分量至少部分去相关。 位置处理器（207）响应于参数扩展数据确定第一信号分量的第一空间位置指示，并且双耳处理器（211）基于第一空间位置指示和第二信号分量来合成第一信号分量以产生 从不同的方向。 本发明可以提供来自例如， 通过使用来自适当位置的主要定向信号的直接合成而不是来自虚拟扬声器位置的信号的组合来使用耳机。
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公开(公告)号：US06792444B2
公开(公告)日：2004-09-14
申请号：US10015706
申请日：2001-11-30
IPC分类号： G06F738
CPC分类号： G11B20/00007 , G10L19/04
摘要： A filtering method is proposed wherein first several filtering steps (I-III, IV-VI) are made. Each step (I-III,IV-VI) includes: generating a filtered signal (I,IV), rounding this filtered signal (II,V) to a certain accuracy and combining (III,VI) the rounded signal with the input signal, whereby a filter error is obtained. The filtered signals are combined (VII) to a first filtered signal that is rounded (VIII) and combined (IX) with the input signal, whereby a coded signal is obtained. This allows to adapt the rounding step (II,V) and the combining step (III,VI) in each filtering step to specific filter design. Thereby limit cycles are reduced, the first filtered signal is available for further processes and the rounding can be inverted in the reverse process. Further a filter method for the reverse process, filter devices (1,10) able to perform these methods and devices (20,30,40,50,60) containing such devices are provided.
摘要翻译： 提出了一种过滤方法，其中进行了几个过滤步骤（I-III，IV-VI）。 每个步骤（I-III，IV-VI）包括：产生经滤波的信号（I，IV），将该滤波信号（II，V）舍入到一定的精度，并将舍入的信号与输入信号 ，由此获得滤波器误差。 经滤波的信号被组合（VII）到被舍入（VIII）并与输入信号组合（IX）的第一滤波信号，由此获得编码信号。 这允许将每个滤波步骤中的舍入步骤（II，V）和组合步骤（III，VI）适应于特定的滤波器设计。 由此限制周期减少，第一个滤波信号可用于进一步的处理，并且舍入可以在相反的过程中反转。 此外，提供了一种用于反向处理的滤波器方法，能够执行这些方法的滤波器装置（1,10）和包含这种装置的装置（20,30,40,50,60）。
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公开(公告)号：US07224747B2
公开(公告)日：2007-05-29
申请号：US09755365
申请日：2001-01-05
CPC分类号： H03H21/0012
摘要： A transmitter is disclosed for transmitting a transmission signal via a transmission medium. The transmitter derives a prediction signal from the digital information signal in dependence on an array of prediction filter coefficients. The array of prediction filler coefficients is obtained by smoothing a first array of coefficients. Said first array of coefficients is generated in response to the digital information signal. A residual signal is obtained by combination of the digital information signal and the prediction signal. The residual signal is encoded so as to obtain an encoded signal. The encoded signal is transmitted via the transmission medium.
摘要翻译： 公开了用于通过传输介质传输传输信号的发射机。 发射机根据预测滤波器系数阵列从数字信息信号中导出预测信号。 通过平滑第一系数阵列获得预测填充系数的阵列。 响应于数字信息信号产生所述第一系数阵列。 通过数字信息信号和预测信号的组合来获得残留信号。 编码残留信号以获得编码信号。 编码信号通过传输介质传输。
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公开(公告)号：US07516066B2
公开(公告)日：2009-04-07
申请号：US10520876
申请日：2003-07-11
CPC分类号： G10L19/07
摘要： According to a first aspect of the invention, at least part of an audio signal is coded in order to obtain an encoded signal, the coding comprising predictive coding the at least part of the audio signal in order to obtain prediction coefficients which represent temporal properties, such as a temporal envelope, of the at least part of the audio signal, transforming the prediction coefficients into a set of times representing the prediction coefficients, and including the set of times in the encoded signal. Especially the use of a time domain derivative or equivalent of the Line Spectral Representation is advantageous in coding such prediction coefficients, because with this technique times or time instants are well defined which makes them more suitable for further encoding. For overlapping frame analysis/synthesis for the temporal envelope, redundancy in the Line Spectral Representation at the overlap can be exploited. Embodiments of the invention exploit this redundancy in an advantageous manner.
摘要翻译： 根据本发明的第一方面，音频信号的至少一部分被编码以获得编码信号，编码包括对音频信号的至少一部分进行预测编码，以获得表示时间性质的预测系数， 例如音频信号的至少一部分的时间包络，将预测系数变换成表示预测系数的一组时间，并且包括编码信号中的一组时间。 特别地，使用线性谱表示的时域导数或等价物对编码这样的预测系数是有利的，因为用这种技术，时间或时刻被很好地定义，这使得它们更适合于进一步的编码。 对于时间包络的重叠帧分析/合成，可以利用重叠处的线谱表示中的冗余。 本发明的实施例以有利的方式利用这种冗余。
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5.发明授权公开(公告)号：US07028249B2
公开(公告)日：2006-04-11
申请号：US10046991
申请日：2002-01-15
申请人： Alphons Antonius Maria Lambertus Bruekers , Adriaan Johannes Rijnberg , Bernard Van Steenbrugge , Marcel Stefan Emmanuel Van Nieuwenhoven
发明人： Alphons Antonius Maria Lambertus Bruekers , Adriaan Johannes Rijnberg , Bernard Van Steenbrugge , Marcel Stefan Emmanuel Van Nieuwenhoven
CPC分类号： H03M13/47 , G11B20/1876 , H03M13/09 , H03M13/29
摘要： A method and apparatus for encoding an input digital signal for lossless transmission comprising first calculation means for calculating a checksum of the input digital signal. The apparatus further comprises encoding means for lossless encoding into an encoded packet of digital data, and composition means for adding the associated checksum to the encoded packet to form an encoded signal. Associated are a method and apparatus for decoding the encoded signal, comprising extracting means for receiving the encoded signal and extracting the encoded packet and associated checksum, decoding means for decoding the encoded packet into a decoded packet comprising the input digital signal, second calculation means for calculating a checksum for the decoded packet, and output means for outputting the decoded packet as an output signal if the calculated checksum corresponds with the extracted checksum.
摘要翻译： 一种用于编码用于无损耗传输的输入数字信号的方法和装置，包括用于计算输入数字信号的校验和的第一计算装置。 该装置还包括用于无损编码到编码数字数据分组的编码装置，以及用于将相关校验和加到编码分组以形成编码信号的合成装置。 相关联的是用于对编码信号进行解码的方法和装置，包括：提取装置，用于接收编码信号并提取编码分组和相关校验和;解码装置，用于将编码分组解码成包括输入数字信号的解码分组;第二计算装置， 计算解码分组的校验和，以及如果所计算的校验和对应于提取的校验和，则输出装置用于输出解码的分组作为输出信号。
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