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51. 发明公开

EP1999747A1 AUDIO DECODING 有权转让
标题翻译： DECODE音频信号
公开(公告)号：EP1999747A1
公开(公告)日：2008-12-10
申请号：EP07735236.7
申请日：2007-03-23
申请人： Koninklijke Philips Electronics N.V. , Dolby Sweden AB
发明人： VILLEMOES, Lars, F. , SCHUIJERS, Erik, G., P.
IPC分类号： G10L19/02 , G10L19/14 , H04S3/02 , H04S5/00
CPC分类号： H04S3/008 , G10L19/008 , G10L19/0208 , G10L25/18
摘要： An audio decoder comprises a receiver (801) for receiving input data comprising an N-channel signal corresponding to a down-mixed signal of an M-channel audio signal, M>N, having complex valued subband encoding matrices applied in frequency subbands and parametric multi-channel data. A subband filter bank (805) generates real-valued frequency subbands for the N-channel signal. A matrix processor (809) determines real-valued subband decoding matrices for compensating the application of the encoding matrices in response to the parametric multi-channel data. A compensation processor (807) generates down-mix data corresponding to the down-mixed signal by a matrix multiplication of the real-valued subband decoding matrices and data of the N-channel signal in the at least some real-valued frequency subbands. The down-mix data can be used to regenerate the down-mixed signal and the M-channel audio signal. The decoder may compensate for MPEG Matrix Surround Compatibility operations performed at the encoder using real-valued frequency subbands.

52. 发明授权

EP1683133B1 AUDIO SIGNAL ENCODING OR DECODING 有权转让
标题翻译：音频信号编码或解码
公开(公告)号：EP1683133B1
公开(公告)日：2007-02-14
申请号：EP04770333.5
申请日：2004-10-28
申请人： Koninklijke Philips Electronics N.V. , Coding Technologies AB
发明人： VILLEMOES, Lars, F. , EKSTRAND, Per , PURNHAGEN, Heiko , SCHUIJERS, Erik, G., P. , DE BONT, Fransiscus M., J.
IPC分类号： G10L19/00 , G10L21/02
CPC分类号： G10L19/008 , G10L21/038
摘要： Encoding an audio signal is provided wherein the audio signal includes a first audio channel and a second audio channel, the encoding comprising subband filtering each of the first audio channel and the second audio channel in a complex modulated filterbank to provide a first plurality of subband signals for the first audio channel and a second plurality of subband signals for the second audio channel, downsampling each of the subband signals to provide a first plurality of downsampled subband signals and a second plurality of downsampled subband signals, further subband filtering at least one of the downsampled subband signals in a further filterbank in order to provide a plurality of sub-subband signals, deriving spatial parameters from the sub-subband signals and from those downsampled subband signals that are not further subband filtered, and deriving a single channel audio signal comprising derived subband signals derived from the first plurality of downsampled subband signals and the second plurality of downsampled subband signals. Further, decoding is provided wherein an encoded audio signal comprising an encoded single channel audio signal and a set of spatial parameters is decoded by decoding the encoded single channel audio channel to obtain a plurality of downsampled subband signals, further subband filtering at least one of the downsampled subband signals in a further filterbank in order to provide a plurality of sub-subband signals, and deriving two audio channels from the spatial parameters, the sub-subband signals and those downsampled subband signals that are not further subband filtered.

53. 发明公开

EP1735778A1 STEREO CODING AND DECODING METHODS AND APPARATUSES THEREOF 审中-公开
标题翻译： STEREOCODIERUNGS-解码方法及其装置
公开(公告)号：EP1735778A1
公开(公告)日：2006-12-27
申请号：EP05718587.8
申请日：2005-03-29
申请人： Koninklijke Philips Electronics N.V.
发明人： SCHUIJERS, Erik, G., P. , BREEBAART, Dirk, J. , MYBURG, Francois, P. , VAN DE KERKHOF, Leon, M.
IPC分类号： G10L19/02 , H04S1/00
CPC分类号： G10L19/02 , G10L19/008 , H04S3/008 , H04S2420/03
摘要： A method of encoding input signals (1, r) to generate encoded data (100) is provided. The method involves processing the input signals (1, r) to determine first parameters (Õ 1 , Õ 2 ) describing relative phase difference and temporal difference between the signals (1, r), and applying these first parameters (Õ 1 , Õ 2 ) to process the input signals to generate intermediate signals. The method involves processing the intermediate signals to determine second parameters (±; IID, Á) describing angular rotation of the first intermediate signals to generate a dominant signal (m) and a residual signal (s), the dominant signal (m) having a magnitude or energy greater than that of the residual signal (s). These second parameters are applicable to process the intermediate signals to generate the dominant (m) and residual (s) signals. The method also involves quantizing the first parameters, the second parameters, and dominant and residual signals (m, s) to generate corresponding quantized data for subsequent multiplexing to generate the encoded data (100).

54. 发明公开

EP1621047A1 AUDIO SIGNAL GENERATION 有权转让
标题翻译：的音频信号发生器
公开(公告)号：EP1621047A1
公开(公告)日：2006-02-01
申请号：EP04727354.5
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. , VAN DE KERKHOF, Leon, M.
IPC分类号： H04S5/00 , G10L19/00
CPC分类号： G10L19/00 , H04S1/007 , H04S2420/03
摘要： An output audio signal (L, R) is generated based on an input audio signal, the input audio signal comprising a plurality of input subband signals (N). The input subband signals are delayed in a plurality of delay units (76) to obtain a plurality of delayed subband signals, wherein at least one input subband signal is delayed more than a further input subband signal of higher frequency, and wherein the output audio signal is derived (77) from a combination of the input audio signal and the plurality of delayed subband signals.

55. 发明公开

EP1500083A1 PARAMETRIC MULTI-CHANNEL AUDIO REPRESENTATION 有权转让
标题翻译：多声道音频的参数说明
公开(公告)号：EP1500083A1
公开(公告)日：2005-01-26
申请号：EP03712597.8
申请日：2003-04-22
申请人： Koninklijke Philips Electronics N.V.
发明人： OOMEN, Arnoldus W., J. , SCHUIJERS, Erik, G., P. , BREEBAART, Dirk, J. , VAN DE PAR, Steven, L., J., D., E.
IPC分类号： G10L19/02
CPC分类号： G10L19/008 , G10L19/24 , H04S3/008 , H04S2420/03
摘要： Multi-channel audio signals are coded into a monaural audio signal and information allowing to recover the multi-channel audio signal from the monaural audio signal and the information. The information is generated by determining a first portion of the information for a first frequency region of the multi-channel audio signal, and by determining a second portion of the information for a second frequency region of the multi-channel audio signal. The second frequency region is a portion of the first frequency region and thus is a sub-range of the first frequency region. The information is multi-layered enabling a scaling of the decoding quality versus bit rate.

56. 发明公开

EP1466320A1 SIGNAL CODING 有权
标题翻译：信号编码
公开(公告)号：EP1466320A1
公开(公告)日：2004-10-13
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.

57. 发明公开

EP2118887A1 LOW COMPLEXITY PARAMETRIC STEREO DECODER 审中-公开
标题翻译： PARAMETRISCHER STEREO DEKODER MIT GERINGERKOMPLEXITÄT
公开(公告)号：EP2118887A1
公开(公告)日：2009-11-18
申请号：EP08702562.3
申请日：2008-02-04
申请人： Koninklijke Philips Electronics N.V.
发明人： SZCZERBA, Marek, Z. , SCHUIJERS, Erik, G., P. , DILLEN, Paulus, H., A.
IPC分类号： G10L19/00 , G10L19/08 , H04S1/00
CPC分类号： H04R5/04 , G10L19/008 , G10L19/093 , G10L19/16
摘要： A stereo audio decoder generates a set of stereo output channels in response to a parametric audio input including signal parameters and stereo related parameters. A parameter processor generates two different set of parameters based on the input signal parameters thus up-mixing the signal parameters by altering or manipulating the signal parameters corresponding to the stereo related parameters. The two different parameters are synthesized by separate signal synthesizers to form respective stereo output channels. The signal synthesizers may be sinusoidal synthesizers, and the decoder also includes transient and noise synthesizers to generate transient and noise signal portions to be applied to the stereo output channels. Further, different transient and noise signal portions to the output channels may be provided by applying different gains based on the stereo related parameter. The two different parameters may be determined from current and previous signal parameter inputs using an input delay line.
摘要翻译：立体声音频解码器响应于包括信号参数和立体声相关参数的参数音频输入而产生一组立体声输出声道。参数处理器基于输入信号参数产生两组不同的参数，从而通过改变或操纵对应于立体声相关参数的信号参数来上变频信号参数。两个不同的参数由单独的信号合成器合成以形成相应的立体声输出通道。信号合成器可以是正弦合成器，并且解码器还包括瞬态和噪声合成器，以产生要施加到立体声输出通道的瞬态和噪声信号部分。此外，可以通过基于立体声相关参数应用不同的增益来提供到输出信道的不同的瞬态和噪声信号部分。可以使用输入延迟线从当前和先前的信号参数输入确定两个不同的参数。

58. 发明公开

EP2070392A2 SWEET SPOT MANIPULATION FOR A MULTI-CHANNEL SIGNAL 审中-公开
标题翻译：甜蜜点操控来一个多路信号
公开(公告)号：EP2070392A2
公开(公告)日：2009-06-17
申请号：EP07826320.9
申请日：2007-09-10
申请人： Koninklijke Philips Electronics N.V.
发明人： KOPPENS, Jeroen, G., H. , SCHUIJERS, Erik, G., P.
IPC分类号： H04S7/00
CPC分类号： H04S7/30 , H04S7/00 , H04S2420/03
摘要： An apparatus, such as a decoder is arranged to modify the sweet-spot of a spatial M-channel audio signal by modifying spatial parameters. Specifically, a receiver (201) receives an N-channel audio signal where N

59. 发明授权

EP1621047B1 AUDIO SIGNAL GENERATION 有权转让
标题翻译： AUDIOSIGNALGENERIERUNG
公开(公告)号：EP1621047B1
公开(公告)日：2007-04-11
申请号：EP04727354.5
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. , VAN DE KERKHOF, Leon, M.
IPC分类号： H04S5/00 , G10L19/00
CPC分类号： G10L19/00 , H04S1/007 , H04S2420/03
摘要： An output audio signal (L, R) is generated based on an input audio signal, the input audio signal comprising a plurality of input subband signals (N). The input subband signals are delayed in a plurality of delay units (76) to obtain a plurality of delayed subband signals, wherein at least one input subband signal is delayed more than a further input subband signal of higher frequency, and wherein the output audio signal is derived (77) from a combination of the input audio signal and the plurality of delayed subband signals.

60. 发明公开

EP1735774A2 MULTI-CHANNEL ENCODER 有权转让
标题翻译：多信道编码器
公开(公告)号：EP1735774A2
公开(公告)日：2006-12-27
申请号：EP05718568.8
申请日：2005-03-25
申请人： Koninklijke Philips Electronics N.V.
发明人： BREEBAART, Dirk, J. , SCHUIJERS, Erik, G., P. , HOTHO, Gerard, H. , VAN LOON, Machiel, W.
IPC分类号： G10L19/00
CPC分类号： G10L19/008
摘要： There is described a multi-channel encoder (10) for processing input signals (300, 310, 320, 330, 340) conveyed in N input channels to generate corresponding output signals (480, 490) conveyed in M output channels together with complementary parametric data (370, 430, 450); M and N are integers wherein N>M. The encoder (10) includes a down-mixer for down-mixing the input signals (30, 310, 320, 330, 340) to generate the corresponding output signals (480, 490), the encoder also comprising an analyser for processing the input signals (300, 310, 320, 330, 340) to generate the parameter data (370, 430, 450), said parametric data describing mutual differences between the N channels of input signal to allow for regenerating during decoding one or more of the N channels of input signals from the M channels of output signal. Such an encoder (10) is capable of providing highly efficient data encoding and also of being backwards compatibility with relatively simpler decoders having fewer than N decoding output channels. The invention also concerns decoders compatible with such a multi-channel.

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