Apparatus and a method for decoding an encoded audio signal
    3.
    发明授权
    Apparatus and a method for decoding an encoded audio signal 有权
    用于解码编码音频信号的装置和方法

    公开(公告)号:US08275626B2

    公开(公告)日:2012-09-25

    申请号:US13004272

    申请日:2011-01-11

    IPC分类号: G10L19/00

    摘要: An apparatus for decoding an encoded audio signal having first and second portions encoded in accordance with first and second encoding algorithms, respectively, BWE parameters for the first and second portions and a coding mode information indicating a first or a second decoding algorithm, includes first and second decoders, a BWE module and a controller. The decoders decode portions in accordance with decoding algorithms for time portions of the encoded signal to obtain decoded signals. The BWE module has a controllable crossover frequency and is configured for performing a bandwidth extension algorithm using the first decoded signal and the BWE parameters for the first portion, and for performing a bandwidth extension algorithm using the second decoded signal and the bandwidth extension parameter for the second portion. The controller controls the crossover frequency for the BWE module in accordance with the coding mode information.

    摘要翻译: 一种用于解码具有根据第一和第二编码算法编码的第一和第二部分的编码音频信号的装置,分别用于第一和第二部分的BWE参数和指示第一或第二解码算法的编码模式信息包括第一和第二编码算法 第二解码器,BWE模块和控制器。 解码器根据编码信号的时间部分的解码算法来解码部分,以获得解码信号。 BWE模块具有可控的交叉频率,并且被配置为使用第一解码信号和第一部分的BWE参数来执行带宽扩展算法,并且用于使用第二解码信号和带宽扩展参数来执行带宽扩展算法 第二部分。 控制器根据编码模式信息控制BWE模块的交叉频率。

    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。

    APPARATUS, METHOD AND COMPUTER PROGRAM FOR MANIPULATING AN AUDIO SIGNAL COMPRISING A TRANSIENT EVENT
    10.
    发明申请
    APPARATUS, METHOD AND COMPUTER PROGRAM FOR MANIPULATING AN AUDIO SIGNAL COMPRISING A TRANSIENT EVENT 有权
    用于处理包含瞬时事件的音频信号的装置,方法和计算机程序

    公开(公告)号:US20120051549A1

    公开(公告)日:2012-03-01

    申请号:US13191780

    申请日:2011-07-27

    IPC分类号: H03G5/16

    摘要: An apparatus for manipulating an audio signal comprising a transient event has a transient signal replacer configured to replace a transient signal portion, comprising the transient event of the audio signal, with a replacement signal portion adapted to signal energy characteristics of one or more transient signal portions of the audio signal, or to signal energy characteristics of the transient signal portion, to obtain a transient-reduced audio signal. The apparatus also has a signal processor configured to process the transient-reduced audio signal to obtain a processed version of the transient-reduced audio signal. The apparatus also has a transient-signal-re-inserter configured to combine the processed version of the transient-reduced audio signal with a transient signal representing, in an original or processed form, a transient content of the transient signal portion.

    摘要翻译: 一种用于操纵包括瞬态事件的音频信号的装置具有瞬态信号替换器,其被配置为将包括音频信号的瞬态事件的瞬态信号部分替换成适于发出一个或多个瞬态信号部分的能量特性的替换信号部分 或者用于发出瞬态信号部分的能量特性,以获得瞬态降低的音频信号。 该装置还具有被配置为处理瞬态降低的音频信号以获得经过瞬态减小的音频信号的处理版本的信号处理器。 该装置还具有瞬态信号重新插入器,其被配置为将经过处理的瞬态降低音频信号的组合与以原始或处理形式表示瞬态信号部分的瞬时内容的瞬态信号组合。