Method and apparatus for conversion between multi-channel audio formats
    1.
    发明授权
    Method and apparatus for conversion between multi-channel audio formats 有权
    用于多声道音频格式之间转换的方法和装置

    公开(公告)号:US08290167B2

    公开(公告)日:2012-10-16

    申请号:US11742502

    申请日:2007-04-30

    IPC分类号: H04R5/00

    摘要: An input multi-channel representation is converted into a different output multi-channel representation of a spatial audio signal, in that an intermediate representation of the spatial audio signal is derived, the intermediate representation having direction parameters indicating a direction of origin of a portion of the spatial audio signal; and in that the output multi-channel representation of the spatial audio signal is generated using the intermediate representation of the spatial audio signal.

    摘要翻译: 输入多声道表示被转换成空间音频信号的不同输出多声道表示,因为导出空间音频信号的中间表示,中间表示具有指示一部分的原点方向的方向参数 空间音频信号; 并且使用空间音频信号的中间表示来生成空间音频信号的输出多声道表示。

    METHOD AND APPARATUS FOR CONVERSION BETWEEN MULTI-CHANNEL AUDIO FORMATS
    2.
    发明申请
    METHOD AND APPARATUS FOR CONVERSION BETWEEN MULTI-CHANNEL AUDIO FORMATS 有权
    用于多通道音频格式转换的方法和装置

    公开(公告)号:US20080232616A1

    公开(公告)日:2008-09-25

    申请号:US11742502

    申请日:2007-04-30

    IPC分类号: H04R5/02 H04R5/00

    摘要: An input multi-channel representation is converted into a different output multi-channel representation of a spatial audio signal, in that an intermediate representation of the spatial audio signal is derived, the intermediate representation having direction parameters indicating a direction of origin of a portion of the spatial audio signal; and in that the output multi-channel representation of the spatial audio signal is generated using the intermediate representation of the spatial audio signal.

    摘要翻译: 输入多声道表示被转换成空间音频信号的不同输出多声道表示,因为导出空间音频信号的中间表示,中间表示具有指示一部分的原点方向的方向参数 空间音频信号; 并且使用空间音频信号的中间表示来生成空间音频信号的输出多声道表示。

    Method and apparatus for conversion between multi-channel audio formats
    3.
    发明授权
    Method and apparatus for conversion between multi-channel audio formats 有权
    用于多声道音频格式之间转换的方法和装置

    公开(公告)号:US08908873B2

    公开(公告)日:2014-12-09

    申请号:US12530645

    申请日:2008-02-01

    IPC分类号: H04R5/00

    摘要: An input multi-channel representation is converted into a different output multi-channel representation of a spatial audio signal, in that an intermediate representation of the spatial audio signal is derived, the intermediate representation having direction parameters indicating a direction of origin of a portion of the spatial audio signal; and in that the output multi-channel representation of the spatial audio signal is generated using the intermediate representation of the spatial audio signal.

    摘要翻译: 输入多声道表示被转换成空间音频信号的不同输出多声道表示,因为导出空间音频信号的中间表示,中间表示具有指示一部分的原点方向的方向参数 空间音频信号; 并且使用空间音频信号的中间表示来生成空间音频信号的输出多声道表示。

    Method and Apparatus for Conversion Between Multi-Channel Audio Formats
    4.
    发明申请
    Method and Apparatus for Conversion Between Multi-Channel Audio Formats 有权
    多声道音频格式转换的方法和装置

    公开(公告)号:US20100166191A1

    公开(公告)日:2010-07-01

    申请号:US12530645

    申请日:2008-02-01

    IPC分类号: H04R5/00

    摘要: An input multi-channel representation is converted into a different output multi-channel representation of a spatial audio signal, in that an intermediate representation of the spatial audio signal is derived, the intermediate representation having direction parameters indicating a direction of origin of a portion of the spatial audio signal; and in that the output multi-channel representation of the spatial audio signal is generated using the intermediate representation of the spatial audio signal.

    摘要翻译: 输入多声道表示被转换成空间音频信号的不同输出多声道表示,因为导出空间音频信号的中间表示,中间表示具有指示一部分的原点方向的方向参数 空间音频信号; 并且使用空间音频信号的中间表示来生成空间音频信号的输出多声道表示。

    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
    5.
    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。

    Multi-mode audio encoder and audio decoder with spectral shaping in a linear prediction mode and in a frequency-domain mode
    8.
    发明授权
    Multi-mode audio encoder and audio decoder with spectral shaping in a linear prediction mode and in a frequency-domain mode 有权
    具有线性预测模式和频域模式的频谱整形的多模式音频编码器和音频解码器

    公开(公告)号:US08744863B2

    公开(公告)日:2014-06-03

    申请号:US13441469

    申请日:2012-04-06

    IPC分类号: G10L19/00

    CPC分类号: G10L19/20 G10L19/022

    摘要: A multi-mode audio signal decoder has a spectral value determinator to obtain sets of decoded spectral coefficients for a plurality of portions of an audio content and a spectrum processor configured to apply a spectral shaping to a set of spectral coefficients in dependence on a set of linear-prediction-domain parameters for a portion of the audio content encoded in a linear-prediction mode, and in dependence on a set of scale factor parameters for a portion of the audio content encoded in a frequency-domain mode. The audio signal decoder has a frequency-domain-to-time-domain converter configured to obtain a time-domain audio representation on the basis of a spectrally-shaped set of decoded spectral coefficients for a portion of the audio content encoded in the linear-prediction mode and for a portion of the audio content encoded in the frequency domain mode. An audio signal encoder is also described.

    摘要翻译: 多模式音频信号解码器具有频谱值确定器,以获得用于音频内容的多个部分的解码频谱系数集合;以及频谱处理器,被配置为将频谱整形应用于一组频谱系数 用于以线性预测模式编码的音频内容的一部分的线性预测域参数,并且依赖于以频域模式编码的音频内容的一部分的一组比例因子参数。 音频信号解码器具有频域 - 时域转换器,其被配置为基于频谱形式的解码频谱系数集来获得时域音频表示,所述解码频谱系数被编码在线性 - 预测模式和频域模式中编码的音频内容的一部分。 还描述了音频信号编码器。

    Device and method for generating a multi-channel signal including speech signal processing
    9.
    发明授权
    Device and method for generating a multi-channel signal including speech signal processing 有权
    用于产生包括语音信号处理的多声道信号的装置和方法

    公开(公告)号:US08731209B2

    公开(公告)日:2014-05-20

    申请号:US12681809

    申请日:2008-10-01

    IPC分类号: H04B3/00

    摘要: In order to generate a multi-channel signal having a number of output channels greater than a number of input channels, a mixer is used for upmixing the input signal to form at least a direct channel signal and at least an ambience channel signal. A speech detector is provided for detecting a section of the input signal, the direct channel signal or the ambience channel signal in which speech portions occur. Based on this detection, a signal modifier modifies the input signal or the ambience channel signal in order to attenuate speech portions in the ambience channel signal, whereas such speech portions in the direct channel signal are attenuated to a lesser extent or not at all. A loudspeaker signal outputter then maps the direct channel signals and the ambience channel signals to loudspeaker signals which are associated to a defined reproduction scheme, such as, for example, a 5.1 scheme.

    摘要翻译: 为了产生具有大于多个输入通道的输出通道数量的多通道信号,混频器用于将输入信号上混合以形成至少直接信道信号和至少一个环境信道信号。 提供语音检测器,用于检测语音部分发生的输入信号,直接信道信号或环境信道信号的一部分。 基于该检测,信号修改器修改输入信号或环境信道信号,以便衰减环境信道信号中的语音部分,而直接信道信号中的这种语音部分被衰减到较小程度,或根本不被衰减。 然后,扬声器信号输出器将直接信道信号和环境信道信号映射到与所定义的再现方案(例如5.1方案)相关联的扬声器信号。