-
1.发明申请APPARATUS, METHOD AND COMPUTER PROGRAM FOR UPMIXING A DOWNMIX AUDIO SIGNAL USING A PHASE VALUE SMOOTHING 有权装置，方法和计算机程序，用于使用相位值平滑来降低下降音频信号公开(公告)号：US20110255714A1
公开(公告)日：2011-10-20
申请号：US13151412
申请日：2011-06-02
IPC分类号： H04B1/00
CPC分类号： G10L19/008 , H04S2420/03
摘要： An apparatus for upmixing a downmix audio signal describing one or more downmix audio channels into an upmixed audio signal describing a plurality of upmixed audio channels includes an upmixer and a parameter determinator. The upmixer is configured to apply temporally variable upmix parameters to upmix the downmix audio signal in order to obtain the upmixed audio signal, wherein the temporally variable upmix parameters include temporally variable smoothened phase values. The parameter determinator is configured to obtain one or more temporally smoothened upmix parameters for usage by the upmixer on the basis of a quantized upmix parameter input information. The parameter determinator is configured to combine a scaled version of a previous smoothened phase value with a scaled version of an input phase information using a phase change limitation algorithm, to determine a current smoothened phase value on the basis of the previous smoothened phase value and the phase input information.
摘要翻译： 用于将描述一个或多个下混音频通道的下混音频信号上混合到描述多个上混音频通道的上混音频信号中的装置包括上混音器和参数确定器。 上混频器被配置为应用时间上可变的上混参数来上混合音频信号，以便获得上混合音频信号，其中时间上可变上混参数包括时间上可变的平滑相位值。 参数确定器被配置为获得一个或多个时间上平滑的上混参数，以供上混合器基于量化上混参数输入信息使用。 参数确定器被配置为使用相变限制算法将先前平滑相位值的缩放版本与输入相位信息的缩放版本组合，以基于先前平滑相位值确定当前平滑相位值，并且 相输入信息。
-
2.发明申请APPARATUS, METHOD AND COMPUTER PROGRAM FOR UPMIXING A DOWNMIX AUDIO SIGNAL 有权装置，方法和计算机程序，用于提升下载音频信号公开(公告)号：US20110317842A1
公开(公告)日：2011-12-29
申请号：US13189621
申请日：2011-07-25
IPC分类号： H04R5/00
CPC分类号： G10L19/008
摘要： An apparatus for upmixing a downmix audio signal describing one or more downmix audio channels into an upmixed audio signal describing a plurality of upmixed audio channels includes an upmixer configured to apply temporally variable upmixing parameters to upmix the downmix audio signal in order to obtain the upmixed audio signal. The apparatus also includes a parameter interpolator, wherein the parameter interpolator is configured to obtain one or more temporally interpolated upmix parameters to be used by the upmixer on the basis of a first complex-valued upmix parameter and a subsequent second complex-valued upmix parameter. The parameter interpolator is configured to separately interpolate between a magnitude value of the first complex-valued upmix parameter and a magnitude value of the second complex-valued upmix parameter, and between a phase value of the first complex-valued upmix parameter and a phase value of the second complex-valued upmix parameter, to obtain the one or more temporally interpolated upmix parameters. A respective method can be implemented, for example, as a computer program.
摘要翻译： 用于将描述一个或多个下混音频通道的缩混音频信号上混合到描述多个上混合音频通道的上混合音频信号中的装置包括：上混频器，其被配置为应用时间上可变的上混参数来混合下混音频信号，以获得上混合音频 信号。 该装置还包括参数内插器，其中参数内插器被配置为基于第一复值上混参数和随后的第二复值上混参数来获得上混合器使用的一个或多个时间插值上混参数。 参数内插器被配置为在第一复值上混参数的幅度值和第二复值上混参数的幅值之间以及在第一复值上混参数的相位值和相位值之间分别插值 的第二复值上混参数，以获得一个或多个时间内插的上混参数。 相应的方法可以例如作为计算机程序来实现。
-
3.发明申请AUDIO DECODER, AUDIO OBJECT ENCODER, METHOD FOR DECODING A MULTI-AUDIO-OBJECT SIGNAL, MULTI-AUDIO-OBJECT ENCODING METHOD, AND NON-TRANSITORY COMPUTER-READABLE MEDIUM THEREFOR 有权音频解码器，音频对象编码器，用于解码多音节对象信号的方法，多音节对象编码方法以及非终端计算机可读介质公开(公告)号：US20120213376A1
公开(公告)日：2012-08-23
申请号：US13451649
申请日：2012-04-20
申请人： Oliver HELLMUTH , Johannes HILPERT , Leonid TERENTIEV , Cornelia FALCH , Andreas HOELZER , Juergen HERRE
发明人： Oliver HELLMUTH , Johannes HILPERT , Leonid TERENTIEV , Cornelia FALCH , Andreas HOELZER , Juergen HERRE
IPC分类号： H04R5/00
CPC分类号： G10L19/04 , G10L19/008 , G10L19/20 , H04S3/002 , H04S2420/03 , H04S2420/07
摘要： An audio decoder for decoding a multi-audio-object signal having an audio signal of a first type and an audio signal of a second type encoded therein is described, the multi-audio-object signal having a downmix signal and side information, the side information having level information of the audio signals of the first and second types in a first predetermined time/frequency resolution, and a residual signal specifying residual level values in a second predetermined time/frequency resolution, the audio decoder having a processor for computing prediction coefficients based on the level information; and an up-mixer for up-mixing the downmix signal based on the prediction coefficients and the residual signal to obtain a first up-mix audio signal approximating the audio signal of the first type and/or a second up-mix audio signal approximating the audio signal of the second type.
摘要翻译： 描述用于解码具有第一类型的音频信号和其中编码的第二类型的音频信号的多音频对象信号的音频解码器，具有下混信号和侧信息的多音频对象信号 在第一预定时间/频率分辨率中具有第一和第二类型的音频信号的电平信息的信息，以及指定第二预定时间/频率分辨率中的剩余电平值的残差信号，该音频解码器具有用于计算预测系数的处理器 基于等级信息; 以及上混频器，用于基于预测系数和残差信号对混合信号进行混频，以获得近似第一类型的音频信号的第一上混合音频信号和/或接近第 第二种类型的音频信号。
-
公开(公告)号：US20110264456A1
公开(公告)日：2011-10-27
申请号：US13080685
申请日：2011-04-06
申请人： Jeroen KOPPENS , Harald MUNDT , Leonid TERENTIEV , Cornelia FALCH , Johannes HILPERT , Oliver HELLMUTH , Lars VILLEMOES , Jan PLOGSTIES , Jeroen BREEBAART , Jonas ENGDEGARD
发明人： Jeroen KOPPENS , Harald MUNDT , Leonid TERENTIEV , Cornelia FALCH , Johannes HILPERT , Oliver HELLMUTH , Lars VILLEMOES , Jan PLOGSTIES , Jeroen BREEBAART , Jonas ENGDEGARD
IPC分类号： G10L19/00
CPC分类号： H04S3/004 , G10L19/008 , G10L19/20 , H04S1/005 , H04S2400/01 , H04S2420/01 , H04S2420/03
摘要： Binaural rendering a multi-channel audio signal into a binaural output signal is described. The multi-channel audio signal has a stereo downmix signal into which a plurality of audio signals are downmixed, and side information having a downmix information, as well as object level information of the plurality of audio signals and inter-object cross correlation information. Based on a first rendering prescription, a preliminary binaural signal is computed from the first and second channels of the stereo downmix signal. A decorrelated signal is generated as an perceptual equivalent to a mono downmix of the first and second channels of the stereo downmix signal being, however, decorrelated to the mono downmix. Depending on a second rendering prescription, a corrective binaural signal is computed from the decorrelated signal and the preliminary binaural signal is mixed with the corrective binaural signal to obtain the binaural output signal.
摘要翻译： 描述了将双声道音频信号转换为双耳输出信号的双耳。 多声道音频信号具有多个音频信号被混合到其中的立体声下混合信号，以及具有下混信息的侧信息以及多个音频信号的对象级信息和对象间相互关系信息。 基于第一渲染处方，从立体声下混信号的第一和第二声道计算初步双耳信号。 产生解相关的信号作为等同于立体声下混信号的第一和第二声道的单声道下混的感知，然而，与单声道下混相关。 根据第二次呈现处方，根据解相关信号计算纠正性双耳信号，并将初步双耳信号与校正双耳信号混合以获得双耳输出信号。
-
公开(公告)号：US20090125314A1
公开(公告)日：2009-05-14
申请号：US12253515
申请日：2008-10-17
申请人： Oliver HELLMUTH , Johannes HILPERT , Leonid TERENTIEV , Cornelia FALCH , Andreas HOELZER , Juergen HERRE
发明人： Oliver HELLMUTH , Johannes HILPERT , Leonid TERENTIEV , Cornelia FALCH , Andreas HOELZER , Juergen HERRE
IPC分类号： G10L19/00
CPC分类号： G10L19/04 , G10L19/008 , G10L19/20 , H04S3/002 , H04S2420/03 , H04S2420/07
摘要： An audio decoder for decoding a multi-audio-object signal having an audio signal of a first type and an audio signal of a second type encoded therein is described, the multi-audio-object signal having a downmix signal and side information, the side information having level information of the audio signals of the first and second types in a first predetermined time/frequency resolution, and a residual signal specifying residual level values in a second predetermined time/frequency resolution, the audio decoder having a processor for computing prediction coefficients based on the level information; and an up-mixer for up-mixing the downmix signal based on the prediction coefficients and the residual signal to obtain a first up-mix audio signal approximating the audio signal of the first type and/or a second up-mix audio signal approximating the audio signal of the second type.
摘要翻译： 描述用于解码具有第一类型的音频信号和其中编码的第二类型的音频信号的多音频对象信号的音频解码器，具有下混信号和侧信息的多音频对象信号 在第一预定时间/频率分辨率中具有第一和第二类型的音频信号的电平信息的信息，以及指定第二预定时间/频率分辨率中的剩余电平值的残差信号，该音频解码器具有用于计算预测系数的处理器 基于等级信息; 以及上混频器，用于基于预测系数和残差信号对混合信号进行混频，以获得近似第一类型的音频信号的第一上混合音频信号和/或接近第 第二种类型的音频信号。
-
公开(公告)号：US20090125313A1
公开(公告)日：2009-05-14
申请号：US12253442
申请日：2008-10-17
申请人： Oliver HELLMUTH , Johannes HILPERT , Leonid TERENTIEV , Cornelia FALCH , Andreas HOELZER , Juergen HERRE
发明人： Oliver HELLMUTH , Johannes HILPERT , Leonid TERENTIEV , Cornelia FALCH , Andreas HOELZER , Juergen HERRE
IPC分类号： G10L19/00
CPC分类号： G10L19/04 , G10L19/008 , G10L19/20 , H04S3/002 , H04S2420/03 , H04S2420/07
摘要： A method for decoding a multi-audio-object signal having audio signals of first and second types encoded therein, the multi-audio-object signal having a downmix signal and side information having level information of the audio signals of the first and second types in a first predetermined time/frequency resolution, the method including computing a prediction coefficient matrix C based on the level information; and up-mixing the downmix signal based on the prediction coefficients to obtain a first and/or a second up-mix audio signal approximating the audio signals of the first and second types, respectively, wherein up-mixing yields the first and/or second up-mix signals S1 and S2 from the downmix signal d according to a computation representable by ( S 1 S 2 ) = D - 1 { ( 1 C ) d + H } , with “1” denoting—depending on the number of channels of d—a scalar, or an identity matrix, and D−1 being a matrix uniquely determined by a downmix prescription according to which the audio signals of the first and second types are downmixed into the downmix signal, and which is also included by the side information, and H being a term independent from d.
-
-
-
-
-
搜索结果
6 条记录 (耗时 0.024 秒)
