专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

11. 发明申请

US20060165184A1 Audio coding using de-correlated signals 有权
标题翻译：使用去相关信号的音频编码
公开(公告)号：US20060165184A1
公开(公告)日：2006-07-27
申请号：US11291009
申请日：2005-11-29
申请人： Heiko Purnhagen , Jonas Engdegard , Jeroen Breebaart , Erik Schuijers
发明人： Heiko Purnhagen , Jonas Engdegard , Jeroen Breebaart , Erik Schuijers
IPC分类号： H04B14/04
CPC分类号： H04S5/02 , G10L19/008
摘要： A multi-channel signal having at least three channels can be reconstructed such, that the reconstructed channels are at least partly de-correlated from each other using a downmixed signal derived from an original multi-channel signal and a set of de-correlated signals provided by a de-correlator (101) that derives the set of de-correlated signals from the down-mix signal, wherein the de-correlated signals within the set of de-correlated signals are mutually mostly orthogonal to each other, i.e. an orthogonality relation between channel pairs is satisfied within an orthogonality tolerance range.
摘要翻译：可以重建具有至少三个信道的多信道信号，使得使用从原始多信道信号导出的下混合信号和提供的一组去相关信号，使得重构信道彼此至少部分地相互关联通过去相关器（101），其从所述下混合信号中导出所述一组去相关信号，其中所述解相关信号组内的去相关信号彼此大致正交，即正交关系在正交公差范围内满足通道对之间。

12. 发明申请

US20070016416A1 Energy dependent quantization for efficient coding of spatial audio parameters 有权
标题翻译：能量相关量化用于空间音频参数的有效编码
公开(公告)号：US20070016416A1
公开(公告)日：2007-01-18
申请号：US11406631
申请日：2006-04-19
申请人： Jonas Roden , Jonas Engdegard , Heiko Purnhagen , Jeroen Breebaart , Erik Schuijers , Steven van de Par , Johannes Hilpert , Jurgen Herre
发明人： Jonas Roden , Jonas Engdegard , Heiko Purnhagen , Jeroen Breebaart , Erik Schuijers , Steven van de Par , Johannes Hilpert , Jurgen Herre
IPC分类号： G10L19/00
CPC分类号： G10L19/03 , G10L19/008
摘要： Parameters being a measure for a characteristic of a channel or of a pair of channels, wherein the parameter is a measure for a characteristic of the channel or of the pair of channels with respect to another channel of a multi-channel signal can be quantized more efficiently using a quantization rule that is generated based on a relation of an energy measure of the channel or the pair of channels and an energy measure of the multi-channel signal. With generation of the quantization rule taking into account a psycho acoustic approach, the size of an encoded representation of the multi-channel signal can be decreased by coarser quantization without significantly disturbing the perceptual quality of the multi-channel signal when reconstructed from the encoded representation.
摘要翻译：参数是用于信道或一对信道特性的度量，其中参数是相对于多信道信号的另一信道的信道或信道对的特性的度量可以被更多地量化有效地使用基于信道的能量测量或信道对的关系产生的量化规则和多信道信号的能量测量。考虑到心理声学方法的生成量化规则，可以通过较粗略的量化来减少多信道信号的编码表示的大小，而不会在从编码表示重建时显着干扰多信道信号的感知质量。

13. 发明授权

US08019350B2 Audio coding using de-correlated signals 有权
标题翻译：使用去相关信号的音频编码
公开(公告)号：US08019350B2
公开(公告)日：2011-09-13
申请号：US11291009
申请日：2005-11-29
申请人： Heiko Purnhagen , Jonas Engdegard , Jeroen Breebaart , Erik Schuijers
发明人： Heiko Purnhagen , Jonas Engdegard , Jeroen Breebaart , Erik Schuijers
IPC分类号： H04W72/00 , H04R5/00
CPC分类号： H04S5/02 , G10L19/008
摘要： A multi-channel signal having at least three channels can be reconstructed such, that the reconstructed channels are at least partly de-correlated from each other using a downmixed signal derived from an original multi-channel signal and a set of de-correlated signals provided by a de-correlator (101) that derives the set of de-correlated signals from the down-mix signal, wherein the de-correlated signals within the set of de-correlated signals are mutually mostly orthogonal to each other, i.e. an orthogonality relation between channel pairs is satisfied within an orthogonality tolerance range.
摘要翻译：可以重建具有至少三个信道的多信道信号，使得使用从原始多信道信号导出的下混合信号和提供的一组去相关信号，使得重构信道彼此至少部分地相互关联通过去相关器（101），其从所述下混合信号中导出所述一组去相关信号，其中所述解相关信号组内的去相关信号彼此大致正交，即正交关系在正交公差范围内满足通道对之间。

14. 发明申请

US20070067162A1 Audio signal encoding or decoding 有权
标题翻译：音频信号编码或解码
公开(公告)号：US20070067162A1
公开(公告)日：2007-03-22
申请号：US10577106
申请日：2004-10-28
申请人： Lars Villemoes , Per Ekstrand , Heiko Purnhagen , Erik Schuijers , Fransiscus de Bont
发明人： Lars Villemoes , Per Ekstrand , Heiko Purnhagen , Erik Schuijers , Fransiscus de Bont
IPC分类号： G10L11/04
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.
摘要翻译：提供对音频信号进行编码，其中音频信号包括第一音频通道和第二音频通道，该编码包括在复调制滤波器组中对第一音频通道和第二音频通道中的每一个进行子带滤波，以提供第一多个子带信号对于第一音频通道和用于第二音频通道的第二多个子带信号，对每个子带信号进行下采样以提供第一多个下采样子带信号和第二多个下采样子带信号，进一步子带滤波至少一个在另一个滤波器组中进行下采样的子带信号，以便提供多个子子带信号，从子子带信号和未进一步子带滤波的那些下采样子带信号导出空间参数，以及导出包括导出的从第一多个下采样子带信号导出的子带信号和第二多个下采样子带信号。此外，提供了解码，其中包括编码的单声道音频信号和一组空间参数的编码音频信号通过对编码的单声道音频声道进行解码以获得多个下采样的子带信号而被解码，进一步的子带滤波至少一个在另一滤波器组中进行下采样的子带信号，以便提供多个子子带信号，以及从空间参数，子子带信号和未进一步子带滤波的那些下采样子带信号导出两个音频信道。

15. 发明申请

US20070230710A1 Method, Device, Encoder Apparatus, Decoder Apparatus and Audio System 有权
公开(公告)号：US20070230710A1
公开(公告)日：2007-10-04
申请号：US11571840
申请日：2005-07-07
申请人： Machiel Van Loon , Dirk Breebaart , Gerard Hotho , Erik Schuijers , Heiko Purnhagen , Karl Roden
发明人： Machiel Van Loon , Dirk Breebaart , Gerard Hotho , Erik Schuijers , Heiko Purnhagen , Karl Roden
IPC分类号： H04R5/00
CPC分类号： H04S3/02 , G10L19/008 , H04S1/007 , H04S2400/03 , H04S2420/03
摘要： A method and a device are described for processing a stereo signal obtained from an encoder, which encodes an N-channel audio signal into spatial parameters (P) and a stereo down-mix comprising first and second stereo signals (Lo, R0). A first signal and a third signal are added in order to obtain a first output signal (Low), wherein the first signal (L0wL) comprises the first stereo signal (Lo) modified by a first complex function (g1), and the third signal (L0wR) comprises the second stereo signal (R0) modified by a third complex function (g3). A second signal and a fourth signal are added to obtain a second output signal (R0w). The fourth signal (R0wR) comprises the second stereo signal (R0) modified by a fourth complex function (g4), and the second signal (R0wL)comprises the first stereo signal (L0) modified by a second complex function (g2). The complex functions (g1, g2, g3, g4) are functions of the spatial parameters (P) and are chosen to be such that an energy value of the difference (L0WL−R0wL) between the first signal and the second signal is larger than or equal to the energy value of the sum (L0wL+R0wL) of the first and the second signal, and the energy value of the difference (R0wR−L0wR) between the fourth signal and the third signal is larger than or equal to the energy value of the sum (R0wR+L0wR) of the fourth signal and the third signal.

16. 发明授权

US08433583B2 Audio decoding 有权
标题翻译：音频解码
公开(公告)号：US08433583B2
公开(公告)日：2013-04-30
申请号：US12294255
申请日：2007-03-23
申请人： Lars Villemoes , Erik Schuijers
发明人： Lars Villemoes , Erik Schuijers
IPC分类号： G10L19/00
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.
摘要翻译：音频解码器包括接收器（801），用于接收输入数据，该输入数据包括对应于M频道音频信号M> N的下混合信号的N信道信号，M信道具有在频率子带中应用的复值子带编码矩阵，并且参数多通道数据。子带滤波器组（805）产生用于N沟道信号的实数频率子带。矩阵处理器（809）响应于参数多通道数据确定用于补偿编码矩阵的应用的实值子带解码矩阵。补偿处理器（807）通过实数子带解码矩阵的矩阵乘法和至少一些实数频率子带中的N信道信号的数据来生成与下混合信号相对应的下混数据。下混合数据可用于再生下混合信号和M声道音频信号。解码器可以补偿在编码器处使用实数频率子带执行的MPEG矩阵环绕兼容性操作。

17. 发明申请

US20090240505A1 AUDIO DECODING 有权
标题翻译：音频解码
公开(公告)号：US20090240505A1
公开(公告)日：2009-09-24
申请号：US12294255
申请日：2007-03-23
申请人： Lars Villemoes , Erik Schuijers
发明人： Lars Villemoes , Erik Schuijers
IPC分类号： G10L19/00
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.
摘要翻译：音频解码器包括接收器（801），用于接收输入数据，该输入数据包括对应于M频道音频信号M> N的下混合信号的N信道信号，M信道具有在频率子带中应用的复值子带编码矩阵，并且参数多通道数据。子带滤波器组（805）产生用于N沟道信号的实数频率子带。矩阵处理器（809）响应于参数多通道数据确定用于补偿编码矩阵的应用的实值子带解码矩阵。补偿处理器（807）通过实数子带解码矩阵的矩阵乘法和至少一些实数频率子带中的N信道信号的数据来生成与下混合信号相对应的下混数据。下混合数据可用于再生下混合信号和M声道音频信号。解码器可以补偿在编码器处使用实数频率子带执行的MPEG矩阵环绕兼容性操作。

18. 发明申请

US20060147047A1 Coding an audio signal 失效
标题翻译：编码音频信号
公开(公告)号：US20060147047A1
公开(公告)日：2006-07-06
申请号：US10536243
申请日：2003-10-31
申请人： Erik Schuijers , Arnoldus Werner Oomen , Matheus Johannes Mans
发明人： Erik Schuijers , Arnoldus Werner Oomen , Matheus Johannes Mans
IPC分类号： H04R5/00 , H03G5/00
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 calculated to obtain first calculated values (A1,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 (P1,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 frequencies 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) (A1,i) associated 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 (P1,I P2,i) even if the number of the parameters changes in time.
摘要翻译：在对音频信号进行编码的方法中，计算表示第一时刻（ti）的音频信号的各方面的第一参数（P 1,1）的值，以获得第一计算值（A 1，i）。计算表示第二，稍后时刻（t 2）的音频信号的方面的第二参数P 2，i）的值，以获得第二计算值（A 2，i）。第一参数（P 1，i）和第二参数（P 2，i）的数量不同。第二参数（P 2，i）的子集（SUS2，i）与音频信号的频率范围（FR）的特定部分（SFRAi）相关联。音频信号的频率范围（FR）优选为被选择以覆盖音频信号中存在的所有频率。基于该子集（SUS2，i）和子集（SUS 1，i）的差异对第二参数（P 2，i）的子集（SUS2，i）的值（A 2，i）进行编码）与基本上与频率范围（FR）的相同特定部分（SFRAi）相关联的第一计算值（A 1，i）。因此，通过对与第二参数（P 2，i）相关联的第二参数（P 2，i和第一参数（P 1，i））的值的差进行编码来获得第二参数（P 2，i）的差分编码值（7）相同频率子范围（SFRAi），即使参数数量随时间变化，也可以对参数进行差分编码（P 1，IP 2，i）。

19. 发明申请

US20070112559A1 Audio signal synthesis 有权
标题翻译：音频信号合成
公开(公告)号：US20070112559A1
公开(公告)日：2007-05-17
申请号：US10552772
申请日：2004-04-14
申请人： Erik Schuijers , Marc Klein Middelink , Arnoldus Werner Oomen , Leon Van De Kerkhof
发明人： Erik Schuijers , Marc Klein Middelink , Arnoldus Werner Oomen , Leon Van De Kerkhof
IPC分类号： G10L19/02
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 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.
摘要翻译：基于输入音频信号提供输出音频信号的合成，所述输入音频信号包括多个输入子带信号，其中至少一个输入子带信号从子带域变换（T）到所述频域以获得至少一个相应的变换信号，其中所述至少一个输入子带信号被延迟和变换（D，T）以获得至少一个相应的变换延迟信号，其中导出至少两个处理的信号从所述至少一个变换信号和所述至少一个经变换的延迟信号，其中所述经处理的信号从所述频域到所述子带域被逆变换（T SUP），以获得相应的处理子带信号，并且其中从所处理的子带信号合成输出音频信号。

20. 发明申请

US20050078832A1 Parametric audio coding 审中-公开
标题翻译：参数音频编码
公开(公告)号：US20050078832A1
公开(公告)日：2005-04-14
申请号：US10504658
申请日：2003-01-17
申请人： Steven Leonardus Josephus Van De Par , Armin Kohlrausch , Albertus Den Brinker , Erik Schuijers , Nicolle Van Schijndel
发明人： Steven Leonardus Josephus Van De Par , Armin Kohlrausch , Albertus Den Brinker , Erik Schuijers , Nicolle Van Schijndel
IPC分类号： G10L19/02 , G10L19/00 , G10L19/08 , H04R5/00
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,ΔA) of the respective sinusoidal components at the given common frequency.
摘要翻译：本发明通过确定音频信号的至少两个信道（L，R）中的共同频率（fcom）来提供至少两声道音频信号（L，R）的编码（11），该共同频率出现在音频信号的至少两个通道中的至少两个，以及通过给定公共频率（fcom）的表示和给定公共频率（f）的相应幅度（A，DeltaA）的表示，以给定的公共频率来表示各个信道中的各个正弦分量给定公共频率处的各个正弦分量。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式