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    • 1. 发明申请
    • SPATIAL AUDIO RENDERING AND ENCODING
    • 空间音频渲染和编码
    • WO2013108200A1
    • 2013-07-25
    • PCT/IB2013/050419
    • 2013-01-17
    • KONINKLIJKE PHILIPS N.V.
    • KOPPENS, Jeroen Gerardus HenricusSCHUIJERS, Erik Gosuinus PetrusOOMEN, Arnoldus Werner JohannesVAN DE KERKHOF, Leon Maria
    • G10L19/008
    • G10L19/20G10L19/00G10L19/008H04R3/12H04R2430/00H04S3/002H04S3/004H04S3/008H04S7/308H04S2400/03H04S2400/11H04S2420/01
    • An encoder (501) generates data representing an audio scene by a first downmix and data characterizing audio objects. In addition, a direction dependent diffuseness parameter indicative of a degree of diffuseness of a residual downmix is provided where the residual downmix corresponds to a downmix of audio components of the audio scene with the audio objects being extracted. A rendering apparatus (503) comprises a receiver (701) receiving the data from the encoder (501). A circuit (703) generates signals for a spatial speaker configuration from the audio objects. A transformer (709) generates non- diffuse sound signals for the spatial speaker configuration by applying a first transformation to the residual downmix and another transformer (707) generates signals for the spatial speaker configuration by applying a second transformation to the residual downmix by applying a decorrelation to the residual downmix. The transformations are dependent on the direction dependent diffuseness parameter. The signals are combined to generate an output signal.
    • 编码器(501)通过第一缩混和表示音频对象的数据产生表示音频场景的数据。 另外,提供了指示残余缩混扩散程度的取决于方向的扩散参数,其中残余缩混对应于音频场景的音频分量的下混,并且提取音频对象。 呈现装置(503)包括从编码器(501)接收数据的接收器(701)。 电路(703)从音频对象产生用于空间扬声器配置的信号。 变压器(709)通过对残余下混合施加第一变换来产生用于空间扬声器配置的非扩散声音信号,而另一个变压器(707)通过对残余下混应用施加第二变换来产生用于空间扬声器配置的信号 去相关到剩余的混合。 变换取决于方向相关的扩散参数。 信号被组合以产生输出信号。