公开(公告)号：EP2830048A1

公开(公告)日：2015-01-28

申请号：EP13189281.2

申请日：2013-10-18

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. ,  Friedrich-Alexander-Universität Erlangen-Nürnberg

发明人： Disch, Sascha ,  Fuchs, Harald ,  Hellmuth, Oliver ,  Herre, Jürgen ,  Murtaza, Adrian ,  Ridderbusch, Falko ,  Paulus, Jouni ,  Terentiv, Leon

IPC分类号： G10L19/008 ,  H04S3/00

CPC分类号： H04S3/02 ,  G10L19/008 ,  H04S3/00 ,  H04S3/006 ,  H04S3/008 ,  H04S7/305 ,  H04S2400/01 ,  H04S2400/03 ,  H04S2400/11 ,  H04S2400/13 ,  H04S2420/03

摘要： An apparatus for generating one or more audio output channels is provided. The apparatus comprises a parameter processor (110) for calculating output channel mixing information and a downmix processor (120) for generating the one or more audio output channels. The downmix processor (120) is configured to receive an audio transport signal comprising one or more audio transport channels, wherein two or more audio object signals are mixed within the audio transport signal, and wherein the number of the one or more audio transport channels is smaller than the number of the two or more audio object signals. The audio transport signal depends on a first mixing rule and on a second mixing rule. The first mixing rule indicates how to mix the two or more audio object signals to obtain a plurality of premixed channels. Moreover, the second mixing rule indicates how to mix the plurality of premixed channels to obtain the one or more audio transport channels of the audio transport signal. The parameter processor (110) is configured to receive information on the second mixing rule, wherein the information on the second mixing rule indicates how to mix the plurality of premixed signals such that the one or more audio transport channels are obtained. Moreover, the parameter processor (110) is configured to calculate the output channel mixing information depending on an audio objects number indicating the number of the two or more audio object signals, depending on a premixed channels number indicating the number of the plurality of premixed channels, and depending on the information on the second mixing rule. The downmix processor (120) is configured to generate the one or more audio output channels from the audio transport signal depending on the output channel mixing information.

摘要翻译： 提供了一种用于产生一个或多个音频输出通道的装置。 该装置包括用于计算输出通道混合信息的参数处理器（110）和用于产生一个或多个音频输出通道的下混处理器（120）。 下混合处理器（120）被配置为接收包括一个或多个音频传输信道的音频传输信号，其中在音频传输信号内混合两个或多个音频对象信号，并且其中一个或多个音频传输信道的数量为 小于两个或更多个音频对象信号的数量。 音频传输信号取决于第一混合规则和第二混合规则。 第一混合规则指示如何混合两个或多个音频对象信号以获得多个预混频道。 此外，第二混合规则指示如何混合多个预混频道以获得音频传输信号的一个或多个音频传输信道。 参数处理器（110）被配置为接收关于第二混合规则的信息，其中关于第二混合规则的信息指示如何混合多个预混合信号，使得获得一个或多个音频传输信道。 此外，参数处理器（110）被配置为根据指示多个预混频道的数量的预设频道号码，根据指示两个或多个音频对象信号的数量的音频对象号来计算输出频道混合信息 ，并且取决于关于第二混合规则的信息。 下混合处理器（120）被配置为根据输出信道混合信息从音频传输信号生成一个或多个音频输出信道。

公开(公告)号：EP2830046A1

公开(公告)日：2015-01-28

申请号：EP13177379.8

申请日：2013-07-22

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

发明人： Paulus, Jouni ,  Fuchs, Harald ,  Hellmuth, Oliver ,  Murtaza, Adrian ,  Ridderbusch, Falko ,  Terentiv, Leon

IPC分类号： G10L19/008

CPC分类号： G10L19/008 ,  H04S3/02 ,  H04S2400/01 ,  H04S2400/03 ,  H04S2420/03

摘要： An apparatus for decoding an encoded audio signal (100) to obtain modified output signals (160), comprises an input interface (110) for receiving a transmitted downmix signal (112) and parametric data (114) relating to audio objects included in the transmitted downmix signal (112), the downmix signal being different from an encoder downmix signal, to which the parametric data is related; a downmix modifier (116) for modifying the transmitted downmix signal using a downmix modification function, wherein the downmix modification is performed in such a way that a modified downmix signal is identical to the encoder downmix signal or is more similar to the encoder downmix signal compared to the transmitted downmix signal (112); an object renderer (118) for rendering the audio objects using the modified downmix signal and the parametric data to obtain output signals; and an output signal modifier (120) for modifying the output signals using an output signal modification function, wherein the output signal modification function is such that a manipulation operation applied to the encoded downmix signal to obtain the transmitted downmix signal (112) is at least partly applied to the output signals to obtain the modified output signals (160).

摘要翻译： 用于编码音频信号（100）的解码的设备，以获得修改的输出信号（160）的输入接口（110），用于接收与音频对象反式mitted下混合信号（112）和参数数据（114）包括包含在反式mitted 混信号（112），所述降混信号是从在编码器缩混信号不同，向其中参数数据是相关的; 缩混改性剂（116），用于修改所述反式使用降混修改函数mitted缩混信号，worin缩混修改在寻求一种方式执行做了修正的缩混信号是相同的编码器缩混信号或更类似于编码器缩混信号相比 到反式mitted下混合信号（112）; 到对象的渲染器（118），用于呈现使用改性降混信号和参数数据，以获得输出信号的音频对象; 以及使用在输出信号修改函数修改所述输出信号，worin输出信号修改函数输出信号调节器（120）进行检测做了篡改操作施加到编码缩混信号，以获得反式mitted下混合信号（112）的至少 部分地施加到输出信号以获得经修改的输出信号（160）。