公开(公告)号：EP2175670A1

公开(公告)日：2010-04-14

申请号：EP09006598.8

申请日：2009-05-15

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. ,  Koninklijke Philips Electronics N.V. ,  Dolby Sweden AB ,  Mundt, Harald ,  Terentiev, Leonid ,  Falch, Cornelia ,  Hilpert, Johannes ,  Hellmuth, Oliver ,  Plogsties, Jan ,  Villemoes, Lars ,  Breebaart, Jeroen ,  Koppens, Jeroen ,  Engdegard, Jonas

发明人： Koppens, Jeroen ,  Mundt, Harald ,  Terentiev, Leonid ,  Falch, Cornelia ,  Hilpert, Johannes ,  Hellmuth, Oliver ,  Plogsties, Jan ,  Villemoes, Lars ,  Breebaart, Jeroen ,  Engdegard, Jonas

IPC分类号： H04S3/00

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 (24) is described. The multi-channel audio signal comprises a stereo downmix signal (18) into which a plurality of audio signals are downmixed, and side information comprising a downmix information (DMG, DCLD) indicating, for each audio signal, to what extent the respective audio signal has been mixed into a first channel and a second channel of the stereo downmix signal (18), respectively, as well as object level information of the plurality of audio signals and inter-object cross correlation information describing similarities between pairs of audio signals of the plurality of audio signals. Based on a first rendering prescription, a preliminary binaural signal (54) is computed from the first and second channels of the stereo downmix signal (18). A decorrelated signal X d n , k is generated as an perceptual equivalent to a mono downmix (58) of the first and second channels of the stereo downmix signal (18) being, however, decorrelated to the mono downmix (58). Depending on a second rendering prescription P 2 1 , m , a corrective binaural signal (64) is computed from the decorrelated signal (62) and the preliminary binaural signal (54) is mixed with the corrective binaural signal (64) to obtain the binaural output signal (24).

摘要翻译： 描述将双声道音频信号双向渲染成双耳输出信号（24）。 多声道音频信号包括立体声下混合信号（18），多个音频信号被混合到其中，并且包括下混信息（DMG，DCLD）的侧信息指示对于每个音频信号，各个音频信号 分别混合到立体声下混合信号（18）的第一通道和第二通道中，以及描述多个音频信号的对象级别信息和描述对象音频信号对之间的相似性的对象间互相关信息 多个音频信号。 基于第一渲染处方，从立体声下混合信号（18）的第一和第二声道计算初步双耳信号（54）。 产生解相关信号X d n，k作为与立体声下混信号（18）的第一和第二声道的单声道下混频（58）的感知等效，然而，与单声道下混频（58）相关。 根据第二渲染处方P 2 1，m，从去相关信号（62）计算校正性双耳信号（64），并将预备双耳信号（54）与校正性双耳信号（64）混合以获得双耳 输出信号（24）。