AUDIO ENCODER, AUDIO DECODER, METHODS AND COMPUTER PROGRAM USING JOINTLY ENCODED RESIDUAL SIGNALS
    11.
    发明授权
    AUDIO ENCODER, AUDIO DECODER, METHODS AND COMPUTER PROGRAM USING JOINTLY ENCODED RESIDUAL SIGNALS 有权
    音频编码器,音频解码器,方法和计算机程序使用联合编码的残留信号

    公开(公告)号:EP3022735B1

    公开(公告)日:2017-09-06

    申请号:EP14739141.1

    申请日:2014-07-11

    摘要: An audio decoder for providing at least four bandwidth-extended channel signals on the basis of an encoded representation is configured to provide a first downmix signal and a second downmix signal on the basis of a jointly encoded representation of the first downmix signal and the second downmix signal using a multi-channel decoding. The audio decoder is configured to provide at least a first audio channel signal and a second audio channel signal on the basis of the first downmix signal using a multi-channel decoding. The audio decoder is configured to provide at least a third audio channel signal and a fourth audio channel signal on the basis of the second downmix signal using a multi-channel decoding. The audio decoder is configured to perform a multi-channel bandwidth extension on the basis of the first audio channel signal and the third audio channel signal, to obtain a first bandwidth-extended channel signal and a third bandwidth-extended channel signal. The audio decoder is configured to perform a multi-channel bandwidth extension on the basis of the second audio channel signal and the fourth audio channel signal, to obtain a second bandwidth extended channel signal and a fourth bandwidth extended channel signal. An audio encoder uses a related concept.

    摘要翻译: 用于基于编码表示提供至少四个带宽扩展信道信号的音频解码器被配置为基于第一缩混信号和第二缩混信号的联合编码表示来提供第一缩混信号和第二缩混信号 信号使用多通道解码。 音频解码器被配置为使用多声道解码基于第一缩混信号来提供至少第一音频声道信号和第二音频声道信号。 音频解码器被配置为使用多声道解码基于第二降混信号来提供至少第三音频声道信号和第四音频声道信号。 音频解码器被配置为基于第一音频信道信号和第三音频信道信号来执行多信道带宽扩展,以获得第一带宽扩展信道信号和第三带宽扩展信道信号。 音频解码器被配置为基于第二音频信道信号和第四音频信道信号来执行多信道带宽扩展,以获得第二带宽扩展信道信号和第四带宽扩展信道信号。 音频编码器使用相关的概念。

    SEGMENT-WISE ADJUSTMENT OF SPATIAL AUDIO SIGNAL TO DIFFERENT PLAYBACK LOUDSPEAKER SETUP
    14.
    发明公开
    SEGMENT-WISE ADJUSTMENT OF SPATIAL AUDIO SIGNAL TO DIFFERENT PLAYBACK LOUDSPEAKER SETUP 有权
    SEGMENTWEISE ANPASSUNG EINESRÄUMLICHENAUDIOSIGNALS AN VERSCHIEDENE WIEDERGABELAUTSPRECHEREINSTELLUNGEN

    公开(公告)号:EP2920982A1

    公开(公告)日:2015-09-23

    申请号:EP13791783.7

    申请日:2013-11-11

    IPC分类号: H04S5/00

    摘要: Apparatus (100) for adapting a spatial audio signal (2) for an original loudspeaker setup to a playback loudspeaker setup that differs from the original loudspeaker setup. The apparatus comprises a direct-ambience decomposer (130) that is configured to decomposing channel signals in a segment of the original loudspeaker setup into direct sound (D) and ambience components (A), and to determine a direction of arrival of the direct sound components. A direct sound renderer (150) receives a playback loudspeaker setup information and adjusts the direct sound components (D) using the playback loudspeaker setup information so that a perceived direction of arrival of the direct sound components in the playback loudspeaker setup is substantially identical to the direction of arrival of the direct sound components. A combiner (180) combines adjusted direct sound components and possibly modified ambience components to obtain loudspeaker signals for loudspeakers of the playback loudspeaker setup.

    摘要翻译: 用于将用于原始扬声器设置的空间音频信号(2)适配成与原始扬声器设置不同的回放扬声器设置的设备(100)。 该设备包括直接环境分解器(130),其被配置为将原始扬声器设置的段中的信道信号分解为直接声音(D)和环境分量(A),并且确定直接声音的到达方向 组件。 直接声音渲染器(150)接收播放扬声器设置信息并使用播放扬声器设置信息来调整直接声音分量(D),使得直播声音分量在回放扬声器设置中的感知到达方向基本上与 直接声音组件的到达方向。 组合器(180)将调节的直接声音分量和可能的改进的氛围组件组合以获得用于播放扬声器设置的扬声器的扬声器信号。