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61. 发明公开

EP1711938A1 AUDIO SIGNAL DECODING USING COMPLEX-VALUED DATA 审中-公开
标题翻译：音频信号解码使用复杂-DATA
公开(公告)号：EP1711938A1
公开(公告)日：2006-10-18
申请号：EP05702661.9
申请日：2005-01-13
申请人： Koninklijke Philips Electronics N.V.
发明人： SCHUIJERS, Erik, G., P.
IPC分类号： G10L19/02
CPC分类号： G10L19/0212 , G10L19/26
摘要： A decoder particularly, but not exclusively, for MPEG-1 layer III data signals, in which recovered spectral coefficients are transformed into time domain signal components, the time domain signal components then being transformed, using a forward transform which is orthogonally modulated with respect to the forward transform that was used at the encoder, to produce a set of second spectral coefficients. In this way, the first and second spectral coefficients may be used as complex-valued spectral coefficients which are amenable to post-processing. In the preferred embodiment, the complex-valued frequency components are, after post-processing, transformed to the time domain using an odd-frequency modulated Discrete Fourier Transform (DFT).

62. 发明授权

EP1479071B1 PARAMETRIC AUDIO CODING 有权
标题翻译：参数音频编码
公开(公告)号：EP1479071B1
公开(公告)日：2006-01-11
申请号：EP03739586.0
申请日：2003-01-17
申请人： Koninklijke Philips Electronics N.V.
发明人： VAN DE PAR, Steven, L., J., D., E. , KOHLRAUSCH, Armin, G. , DEN BRINKER, Albertus, C. , SCHUIJERS, Erik, G., P. , VAN SCHIJNDEL, Nicolle, H.
IPC分类号： G10L19/08
CPC分类号： G10L19/08
摘要： The invention provides coding (11) of an at least two-channel audio signal (L,R) by determining common frequencies (fcom) in the at least two channels (L,R) of the audio signal, which common frequencies occur in at least two of the at least two channels of the audio signal, and by representing respective sinusoidal components in respective channels at a given common frequency by a representation of the given common frequency (fcom) and a representation of respective amplitudes (A,DeltaA) of the respective sinusoidal components at the given common frequency.

63. 发明公开

EP1568010A1 CODING AN AUDIO SIGNAL 有权
标题翻译： AUDIOSIGNALKODIERUNG
公开(公告)号：EP1568010A1
公开(公告)日：2005-08-31
申请号：EP03758495.0
申请日：2003-10-31
申请人： Koninklijke Philips Electronics N.V.
发明人： SCHUIJERS, Erik, G., P. , OOMEN, Arnoldus, W., J. , MANS, Matheus, J., A.
IPC分类号： G10L19/02 , G10L19/00
CPC分类号： G10L19/008 , G10L19/035
摘要： In the method of coding the audio signal, the values of first parameters (P1,1), which represent aspects of the audio signal at a first instant (ti), are calcul ated to obtain first calculated values (Al,i). The values of second parameters P2,i), which represent the aspects of the audio signal at a second, later, instant (t2), are calculated to obtain the second calculated values (A2,i). The number of the first parameters (Pl,i) and the number of the second parameters (P2,i) differ. A subset (SUS2,i) of the second parameters (P2,i) is associated with a particular portion (SFRAi) of a frequency range (FR) of the audio signal This frequency range (FR) of the audio signal is preferably selected to cover all the f requencies present in the audio signal. The values (A2,i) of the subset (SUS2,i) of the second parameters (P2,i) are coded based on a difference of this subset (SUS2,i) and a subset (SUS1,i) of the first calculated value(s) (Al,i) associate d with substantially this same particular portion (SFRAi) of the frequency range (FR). Thus the differentially coded values (7) of the second parameters (P2,i) are obtained by coding the difference of the values of second parameters (P2,i and first parameters (P1,i) which are associated with substantially the same frequency subrange (SFRAi). This allows to differential code the parameters (Pl,I P2,i) even if the number of the parameters changes in time.

64. 发明公开

EP1527441A2 AUDIO CODING 有权转让
标题翻译：音频编码
公开(公告)号：EP1527441A2
公开(公告)日：2005-05-04
申请号：EP03764067.9
申请日：2003-07-11
申请人： Koninklijke Philips Electronics N.V.
发明人： SCHUIJERS, Erik, G., P. , RIJNBERG, Adriaan, J. , TOPALOVIC, Natasa
IPC分类号： G10L19/06
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，对音频信号的至少一部分进行编码以便获得编码信号，该编码包括对音频信号的至少一部分进行预测编码以便获得表示时间特性的预测系数，例如音频信号的至少一部分的时间包络，将预测系数变换成代表预测系数的时间集合，并且在编码信号中包括时间集合。尤其是使用线谱表示的时域微分或等效方式在编码这样的预测系数方面是有利的，因为利用这种技术，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度。本发明的实施例以有利的方式利用这种冗余。

65. 发明授权

EP2380364B1 GENERATING AN OUTPUT SIGNAL BY SEND EFFECT PROCESSING 有权转让
标题翻译：产生输出信号发送我们的效果处理
公开(公告)号：EP2380364B1
公开(公告)日：2012-10-17
申请号：EP09796455.5
申请日：2009-12-16
申请人： Koninklijke Philips Electronics N.V.
发明人： KOPPENS, Jeroen, G., H. , SCHUIJERS, Erik, G., P.
IPC分类号： H04S3/00
CPC分类号： H04S3/002 , H04S2400/01 , H04S2420/01 , H04S2420/03

66. 发明公开

EP2422344A1 AUDIO SIGNAL SYNTHESIZING 审中-公开
标题翻译：音频信号合成
公开(公告)号：EP2422344A1
公开(公告)日：2012-02-29
申请号：EP10717280.1
申请日：2010-04-14
申请人： Koninklijke Philips Electronics N.V.
发明人： SCHUIJERS, Erik, G., P. , OOMEN, Arnoldus, W., J. , DE BONT, Fransiscus, M., J. , OSTROVSKYY, Mykola , RIJNBERG, Adriaan, J. , KOPPENS, Jeroen, G., H.
IPC分类号： G10L19/00
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和参数扩展数据的编码信号，用于将下混合信号扩展成多声源信号。分解处理器（205）执行下混合信号的信号分解以生成至少第一信号分量和第二信号分量，其中第二信号分量至少部分地与第一信号分量解相关。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合成第一信号分量以发起从不同的方向。本发明可以提供改进的空间体验，例如，通过使用来自适当位置的主方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。

67. 发明公开

EP2406789A1 EMBEDDING AND EXTRACTING ANCILLARY DATA 审中-公开
标题翻译：嵌入和附加数据的提取
公开(公告)号：EP2406789A1
公开(公告)日：2012-01-18
申请号：EP10710645.2
申请日：2010-03-05
申请人： Koninklijke Philips Electronics N.V.
发明人： DE BONT, Fransiscus, M., J. , OOMEN, Arnoldus, W., J. , SCHUIJERS, Erik, G., P.
IPC分类号： G11B20/00 , G10L19/00
CPC分类号： G11B20/00086 , G11B20/00884
摘要： The invention proposes a method for embedding an ancillary data into a compressed audio signal. This is achieved by replacing Least Significant Bits (LSBs) in at least one frequency subband of the compressed audio signal by the ancillary data. When replacing LSB bits of compressed subband signals with the ancillary data, the subband signal is effectively modified, resulting in a different decoded output. The replaced LSB bits corresponding to the ancillary data are conveyed as part of the bitstream and can be easily extracted at the decoder. In such a way the decoder obtains the ancillary data that can be used for more advanced audio reproduction at the decoder. The compressed audio itself maintains a good audio quality despite the replacement of the LSB bits of the frequency subband, because the LSB bits do not contribute to the audible artefacts.

68. 发明公开

EP2396977A2 HEAD TRACKING 有权转让
标题翻译：头部追踪
公开(公告)号：EP2396977A2
公开(公告)日：2011-12-21
申请号：EP10706748.0
申请日：2010-02-09
申请人： Koninklijke Philips Electronics N.V.
发明人： DILLEN, Paulus, H., A. , OOMEN, Arnoldus, W., J. , SCHUIJERS, Erik, G., P.
IPC分类号： H04S7/00
CPC分类号： H04S7/304
摘要： A head tracking system that determines a rotation angle of a head of a user with respect to a reference direction, dependent on a movement of a user including changes of place, position, and/or posture. The head tracking system includes a sensing device for measuring a head movement to provide a measure representing the head movement, and a processing circuit for deriving the rotation angle of the head of the user with respect to the reference direction from the measure. The reference direction is dependent on the movement of the user.
摘要翻译：在本发明中提出了一种头部跟踪系统（400），其确定用户（100）的头部（100b）相对于参考方向（310）的旋转角度（300），该参考方向取决于一个用户（100）。这里，用户的移动应该被理解为包括例如移动的行为或过程。地点，位置或姿势的变化，例如，躺下或坐在放松椅上。根据本发明的头部追踪系统包括用于测量头部移动以提供表示头部移动的量度（401）的传感装置（410），以及用于导出用户头部的旋转角度的处理电路（420）关于该措施的参考方向。处理电路（420）中使用的参考方向（310）取决于用户的移动。使参考方向（310）取决于用户的移动的优点在于确定头部（100b）的旋转角度（300）独立于环境，即不固定于环境。因此，无论何时用户（100）是例如在移动中和他的身体部位经历运动时，参考方向适应这种运动。

69. 发明公开

EP2380364A1 GENERATING AN OUTPUT SIGNAL BY SEND EFFECT PROCESSING 有权转让
标题翻译：产生输出信号发送我们的效果处理
公开(公告)号：EP2380364A1
公开(公告)日：2011-10-26
申请号：EP09796455.5
申请日：2009-12-16
申请人： Koninklijke Philips Electronics N.V.
发明人： KOPPENS, Jeroen, G., H. , SCHUIJERS, Erik, G., P.
IPC分类号： H04S3/00
CPC分类号： H04S3/002 , H04S2400/01 , H04S2420/01 , H04S2420/03
摘要： An output signal is generated from an input signal by applying a send effect processing to the input signal. The input signal comprises a weighted sum of component signals. Dependencies between the weighted component signals are represented by parameters. In accordance with the present invention, the output signal is generated in dependence of the parameters to compensate for an unequal weighting of component signals comprised in the input signal. Due to this compensation the strength of the send effect corresponding to the separate component signals is (nearly) proportional to the strength of each of the component signals, which results in more realistic surround experience.

70. 发明公开

EP2283483A1 A PARAMETRIC STEREO UPMIX APPARATUS, A PARAMETRIC STEREO DECODER, A PARAMETRIC STEREO DOWNMIX APPARATUS, A PARAMETRIC STEREO ENCODER 有权转让
标题翻译：参赛者立场声明 - VORRICHTUNG，参赛者立体声演奏者，参赛者立体声下降 - VORRICHTUNG，参赛者STEREO-KODIERER
公开(公告)号：EP2283483A1
公开(公告)日：2011-02-16
申请号：EP09750232.2
申请日：2009-05-14
申请人： Koninklijke Philips Electronics N.V.
发明人： SCHUIJERS, Erik, G., P.
IPC分类号： G10L19/00 , H04S3/02
CPC分类号： H04S5/00 , G10L19/008 , H04S3/02 , H04S2400/03 , H04S2420/03
摘要： A parametric stereo upmix apparatus generates left and right signals from a mono downmix signal based on spatial parameters. The parametric stereo upmix includes a predictor configured to predict a difference signal including a difference between the left and right signals based on the mono downmix signal scaled with a prediction coefficient. The prediction coefficient is derived from the spatial parameters. The parametric stereo upmix apparatus further includes an arithmetic unit configured to derive the left and right signals based on a sum and a difference of the mono downmix signal and the difference signal.
摘要翻译：用于基于空间参数从单声道下混信号产生左信号和右信号的参数立体声上混方法包括基于以预测系数缩放的单声道下混信号来预测包括左信号和右信号之间的差的差信号。预测系数是从空间参数得出的。该方法还包括基于单声道降混信号和所述差分信号的和和的差导出左信号和右信号。

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