Apparatus and method for extending or compressing time sections of an audio signal
    37.
    发明公开
    Apparatus and method for extending or compressing time sections of an audio signal 审中-公开
    装置和方法,用于音频信号的时间段的延伸或压缩

    公开(公告)号:EP2388780A1

    公开(公告)日:2011-11-23

    申请号:EP11155349.1

    申请日:2011-02-22

    IPC分类号: G10L21/04

    CPC分类号: G10L21/04

    摘要: An audio signal processor (100) comprising an analysis means (104), a manipulation factor unit (106), and a time-stretching and compression device (108). The analysis means (104) is implemented to determine a first measure of information content (M 1 ) of a first time section of an audio signal and a second measure of information content (M 2 ) of a second time section. The manipulation factor unit (106) is implemented to determine a time manipulation factor (ΔD 1 ) for the first time section in dependence on the first measure of information content (M 1 ) and the second measure of information content (M 2 ). The time-stretching and compression device (108) is implemented to time-stretch or compress the first time section according to the manipulation factor (ΔD 1 ) and to treat the second time section differently from the first time section. A corresponding method for adjusting time information content variations of an audio signal (s) is also disclosed. The determination of the first measure of information content and of the second measure of information content may be based on externally provided control information such as meta-data provided along with the audio signal.

    摘要翻译: 音频信号处理器(100)分析(104)的包括装置,篡改因子单元(106),和一个时间伸展和压缩装置(108)。 分析装置(104)被实现为确定性矿的信息内容的音频信号的第一时间段和信息内容的第二度量(M 1)的第二时间部分的第一量度(M 2)。 篡改因子单元(106)被实现为确定性矿首次在信息内容的第一度量依赖(M 1)部分和信息内容的第二量度(M 2)时间操控因子(“D 1)。 时间拉伸和压缩装置(108)被实现为时间拉伸或压缩第一时间区间gemäß于操纵因子(“D 1),并从第一时间段不同地对待所述第二时间段。 用于调节音频信号的时间信息的内容变化的相应方法(一个或多个)IST游离缺失盘。 的信息内容和信息内容的第二小节的第一度量的确定可基于外部提供的控制信息:地连同音频信号提供,诸如元数据。

    Apparatus, method and computer program for obtaining a parameter describing a variation of a signal characteristic of a signal
    38.
    发明公开
    Apparatus, method and computer program for obtaining a parameter describing a variation of a signal characteristic of a signal 审中-公开
    用于获得参数的装置,方法和计算机程序,其描述了信号的信号特性的变化

    公开(公告)号:EP2211335A1

    公开(公告)日:2010-07-28

    申请号:EP09005486.7

    申请日:2009-04-17

    IPC分类号: G10L11/04

    CPC分类号: G10L25/90

    摘要: An apparatus for obtaining a parameter describing a variation of a signal characteristic of a signal on the basis of actual transform-domain parameters describing the audio signal in transform-domain comprises a parameter determinator. The parameter determinator is configured to determine one or more model parameters of a transform-domain variation model describing an evolution of the transform-domain parameters in dependence on one or more model parameters representing a signal characteristic.

    摘要翻译: 用于获得参数的实际变换域参数在变换域中描述所述音频信号的基础上描述一个信号的信号特性的变化的设备包括:一个参数确定。 参数确定器被配置为确定矿一个或变换域变体模型中在表示特征信号的一个或多个模型参数的依赖变换域参数的演化的描述的多个模型参数。