Binaural rendering of a multi-channel audio signal
    6.
    发明授权
    Binaural rendering of a multi-channel audio signal 有权
    双声道渲染多声道音频信号

    公开(公告)号:US08325929B2

    公开(公告)日:2012-12-04

    申请号:US13080685

    申请日:2011-04-06

    IPC分类号: H04R5/00

    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。

    Audio signal decoder, audio signal encoder, method for providing an upmix signal representation, method for providing a downmix signal representation, computer program and bitstream using a common inter-object-correlation parameter value
    7.
    发明授权
    Audio signal decoder, audio signal encoder, method for providing an upmix signal representation, method for providing a downmix signal representation, computer program and bitstream using a common inter-object-correlation parameter value 有权
    音频信号解码器,音频信号编码器,用于提供上混合信号表示的方法,用于提供下混信号表示的方法,计算机程序和比特流,使用公共的对象间相关参数值

    公开(公告)号:US09460724B2

    公开(公告)日:2016-10-04

    申请号:US13434450

    申请日:2012-03-29

    摘要: An audio signal decoder for providing an upmix signal representation on the basis of a downmix signal representation and an object-related parametric information and in dependence on a rendering information has an object parameter determinator. The object parameter determinator is configured to obtain inter-object-correlation values for a plurality of pairs of audio objects. The object parameter determinator is configured to evaluate a bitstream signaling parameter in order to decide whether to evaluate individual inter-object-correlation bitstream parameter values to obtain inter-object-correlation values for a plurality of pairs of related audio objects, or to obtain inter-object-correlation values for a plurality of pairs of related audio objects using a common inter-object-correlation bitstream parameter value. The audio signal decoder also has a signal processor configured to obtain the upmix signal representation on the basis of the downmix signal representation and using the inter-object-correlation values for a plurality of pairs of related objects and the rendering information.

    摘要翻译: 用于根据降混信号表示和对象相关参数信息提供上混合信号表示的音频信号解码器,并且根据呈现信息,具有对象参数确定器。 对象参数确定器被配置为获得多对音频对象的对象间相关值。 对象参数确定器被配置为评估比特流信令参数,以便决定是否评估各个对象间相关比特流参数值以获得多对相关音频对象的对象间相关值, - 使用公共对象间相关比特流参数值的多对相关音频对象的对象相关值。 音频信号解码器还具有信号处理器,其被配置为基于下混信号表示获得上混信号表示,并且使用多对相关对象和呈现信息的对象间相关值。