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31. 发明授权

EP1466320B1 SIGNAL CODING 有权
标题翻译：信号编码
公开(公告)号：EP1466320B1
公开(公告)日：2007-02-07
申请号：EP02781516.6
申请日：2002-11-13
申请人： Koninklijke Philips Electronics N.V.
发明人： SCHUIJERS, Erik, G., P. , OOMEN, Arnoldus, W., J.
IPC分类号： G10L19/14
CPC分类号： G10L19/022
摘要： Coding a signal is provided, wherein a first set of values is provided related to subsequent times in a first time interval of the signal, a second set of values is provided related to subsequent times in a second time interval of the signal, the first time interval having an overlap with the second time interval, the overlap including at least two subsequent times of the second interval, wherein at least one of the values of the second set related to the at least two subsequent times in the overlap is encoded with reference to a value of the first set which is closer in time to the at least one value of the second set than any other value in the second set.

32. 发明公开

EP1618763A1 AUDIO SIGNAL SYNTHESIS 有权转让
标题翻译： AUDIOSIGNALSYNTHESE
公开(公告)号：EP1618763A1
公开(公告)日：2006-01-25
申请号：EP04727357.8
申请日：2004-04-14
申请人： Koninklijke Philips Electronics N.V.
发明人： SCHUIJERS, Erik, G., P. , KLEIN MIDDELINK, Marc, W., T. , OOMEN, Arnoldus, W., J. , VAN DE KERKHOF, Leon, M.
IPC分类号： H04S5/00
CPC分类号： H04S3/008 , H04S2420/03
摘要： Synthesizing an output audio signal is provided on the basis of an input audio signal, the input audio signal comprising a plurality of input sub-band signals, wherein at least one input sub-band signal is transformed (T) from the sub-band domain to the frequency domain to obtain at least one respective transformed signal, wherein the at least one input sub-band signal is delayed and transformed (D, T) to obtain at least one respective transformed delayed signal, wherein at least two processed signals are derived (P) from the at least one transformed signal and the at least one transformed delayed signal, wherein the processed signals are inverse transformed (T-1) from the frequency domain to the sub-band domain to obtain respective processed sub-band signals, and wherein the output audio signal is synthesized from the processed sub-band signals.

33. 发明公开

EP1606797A1 PROCESSING OF MULTI-CHANNEL SIGNALS 有权转让
标题翻译：处理多通道信号
公开(公告)号：EP1606797A1
公开(公告)日：2005-12-21
申请号：EP04720692.5
申请日：2004-03-15
申请人： Koninklijke Philips Electronics N.V.
发明人： BEEBAART, Dirk, J. , SCHUIJERS, Erik, G., P.
IPC分类号： G10L19/00 , H04S3/02
CPC分类号： G10L19/008 , H04S1/007 , H04S3/008 , H04S2420/03
摘要： A method of generating a monaural signal (S) comprising a combination of at least two input audio channels (L, R) is disclosed. Corresponding frequency components from respective frequency spectrum representations for each audio channel (L(k), R(k)) are summed (46) to provide a set of summed frequency components (S(k)) for each sequential segment. For each frequency band (i) of each of sequential segment, a correction factor (m(i)) is calculated (45) as function of a sum of energy of the frequency components of the summed signal in the band formula (I) and a sum of the energy of said frequency components of the input audio channels in the band formula (II). Each summed frequency component is corrected (47) as a function of the correction factor (m(i)) for the frequency band of said component.

34. 发明公开

EP1554716A1 SIGNAL FILTERING 审中-公开
标题翻译： SIGNALFILTERUNG
公开(公告)号：EP1554716A1
公开(公告)日：2005-07-20
申请号：EP03715240.2
申请日：2003-04-22
申请人： Koninklijke Philips Electronics N.V.
发明人： BREEBAART, Dirk, J. , SCHUIJERS, Erik, G., P.
IPC分类号： G10L19/02
CPC分类号： G10L19/008 , H04S3/008 , H04S2420/03
摘要： A method of filtering an information signal (x(t)), the method comprising modifying frequency domain components (X(k,n)) of the information signal according to a desired filter response (F(k,n)); wherein the step of modifying frequency domain components further comprises modifying (105) frequency domain components of a first frame of said information signal according to a first actual filter response (F'(k,n)), the first actual filter response being a function (Φ) of the desired filter response and information (108) related to a previous frame of the information signal.

35. 发明公开

EP1479071A2 PARAMETRIC AUDIO CODING 有权
标题翻译：参数音频编码
公开(公告)号：EP1479071A2
公开(公告)日：2004-11-24
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.

36. 发明公开

EP1446796A1 TRACKING OF SINUSOIDAL PARAMETERS IN AN AUDIO CODER 审中-公开
标题翻译：窦参数的IN A音频编码器研究
公开(公告)号：EP1446796A1
公开(公告)日：2004-08-18
申请号：EP02775082.7
申请日：2002-10-15
申请人： Koninklijke Philips Electronics N.V.
发明人： DEN BRINKER, Albertus, C. , GERRITS, Andreas, J. , SCHUIJERS, Erik, G., P. , HOTHO, Gerard, H. , HOEPPE, Christophe, A., B.
IPC分类号： G10L19/02
CPC分类号： G10L19/02
摘要： Coding of an audio signal (x) is provided where an indicator (ai, P1k) of the frequency variation of sinusoidal components of the signal is used in the tracking algorithm of a sinusoidal coder (13) where sinusoidal parameters from appropriate sinusoids from consecutive segments are linked. By applying an indicator such as a warp factor or polynomial fitting, more accurate tracks are obtained. As a result, the sinusoids can be encoded more efficiently. Furthermore, a better audio quality can be obtained by improved phase continuation.

37. 发明公开

EP1356456A1 LINKING OF SIGNAL COMPONENTS IN PARAMETRIC ENCODING 有权
标题翻译：信号成分的IN参数编码LINK
公开(公告)号：EP1356456A1
公开(公告)日：2003-10-29
申请号：EP01273160.0
申请日：2001-12-20
申请人： Koninklijke Philips Electronics N.V.
发明人： DEN BRINKER, Albertus, C. , OOMEN, Arnoldus, W., J. , DE BONT, Fransiscus, M., J. , SCHUIJERS, Erik, G., P.
IPC分类号： G10L19/02
摘要： The invention relates to a linking unit (100), a parametric encoder (400) and a method for generating linking information L indicating components of consecutive extended segments sp and sc which may be linked together in order to form a sinusoidal track. The segments sp and sc approximate consecutive segments of a sinusoidal audio or speech signal s. The linking unit comprises a calculating unit (120) for generating a similarity matrix S(m,n) in response to received sinusoidal code data and an evaluating unit (140) for receiving and evaluating said similarity matrix S in order to generate said linking information by selecting those pairs of components m,n the similarity of which is maximal. According to the invention the calculating unit (120) is adapted to calculate the similarity matrix S by additionally considering information about the phase consistency between the components of the extended previous segment sp and the extended current segment sc. In that way the selection of components suitable for being linked together is improved resulting in the definition of correct tracks.

38. 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

39. 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。

40. 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.

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