Systems, methods, apparatus, and computer-readable media for noise injection
    1.
    发明授权
    Systems, methods, apparatus, and computer-readable media for noise injection 有权
    用于噪声注入的系统,方法,装置和计算机可读介质

    公开(公告)号:US09208792B2

    公开(公告)日:2015-12-08

    申请号:US13211027

    申请日:2011-08-16

    CPC分类号: G10L19/028

    摘要: A method of processing an audio signal is described. The method includes selecting one among a plurality of entries of a codebook based on information from the audio signal. The method also includes determining locations, in a frequency domain, of zero-valued elements of a first signal that is based on the selected codebook entry. The method further includes calculating energy of the audio signal at the determined frequency-domain locations. The method additionally includes calculating a value of a measure of a distribution of the energy of the audio signal among the determined frequency-domain locations. The method also includes calculating a noise injection gain factor based on the calculated energy and the calculated value.

    摘要翻译: 描述了一种处理音频信号的方法。 该方法包括基于来自音频信号的信息来选择码本的多个条目之一。 该方法还包括在频域中确定基于所选码本条目的第一信号的零值元素的位置。 该方法还包括在确定的频域位置处计算音频信号的能量。 该方法还包括计算所确定的频域位置之间的音频信号的能量分布的度量的值。 该方法还包括基于计算的能量和计算值来计算噪声注入增益因子。

    Systems, methods, apparatus, and computer-readable media for dynamic bit allocation
    5.
    发明授权
    Systems, methods, apparatus, and computer-readable media for dynamic bit allocation 有权
    用于动态位分配的系统,方法,设备和计算机可读介质

    公开(公告)号:US09236063B2

    公开(公告)日:2016-01-12

    申请号:US13193529

    申请日:2011-07-28

    摘要: A method of bit allocation is described. The method includes, for each among a plurality of vectors, calculating a corresponding one of a plurality of gain factors. The method also includes, for each among the plurality of vectors, calculating a corresponding bit allocation that is based on the gain factor. The method further includes, for at least one among the plurality of vectors, determining that the corresponding bit allocation is not greater than a minimum allocation value. The method additionally includes, in response to the determining, for each of the at least one vector, changing the corresponding bit allocation.

    摘要翻译: 描述了一种比特分配的方法。 对于多个向量中的每一个,该方法包括计算多个增益因子中的相应一个。 对于多个向量中的每一个,该方法还包括基于增益因子来计算相应的比特分配。 该方法还包括对于多个向量中的至少一个,确定相应的比特分配不大于最小分配值。 该方法还响应于确定对于至少一个向量中的每一个,改变相应的比特分配。

    Noise-robust speech coding mode classification
    10.
    发明授权
    Noise-robust speech coding mode classification 有权
    噪声鲁棒的语音编码模式分类

    公开(公告)号:US08990074B2

    公开(公告)日:2015-03-24

    申请号:US13443647

    申请日:2012-04-10

    摘要: A method of noise-robust speech classification is disclosed. Classification parameters are input to a speech classifier from external components. Internal classification parameters are generated in the speech classifier from at least one of the input parameters. A Normalized Auto-correlation Coefficient Function threshold is set. A parameter analyzer is selected according to a signal environment. A speech mode classification is determined based on a noise estimate of multiple frames of input speech.

    摘要翻译: 公开了一种噪声鲁棒的语音分类方法。 分类参数从外部组件输入到语音分类器。 内部分类参数在语音分类器中从至少一个输入参数生成。 设置归一化自相关系数函数阈值。 根据信号环境选择参数分析仪。 基于多帧输入语音的噪声估计来确定语音模式分类。