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    Multi-reference LPC filter quantization and inverse quantization device and method
    2.
    发明授权
    Multi-reference LPC filter quantization and inverse quantization device and method 有权
    多参考LPC滤波器量化和逆量化设备及方法

    公开(公告)号：US08332213B2

    公开(公告)日：2012-12-11

    申请号：US12501188

    申请日：2009-07-10

    申请人： Philippe Gournay ,  Bruno Bessette ,  Redwan Salami

    发明人： Philippe Gournay ,  Bruno Bessette ,  Redwan Salami

    IPC分类号： G10L21/00

    CPC分类号： G10L19/06 ,  G10L19/18 ,  H03M7/3082

    摘要： A multi-reference quantization device and method for quantizing an input LPC filter, comprises a plurality of differential quantizers using respective, different references, and a selector of a reference amongst the different references of the differential quantizers using a reference selection criterion. The input LPC filter is differentially quantized by the differential quantizer using the selected reference. A device and method for inverse quantizing a multi-reference differentially quantized LPC filter extracted from a bitstream, comprises an extractor from the bitstream of information about a reference amongst a plurality of possible references used for quantizing the multi-reference differentially quantized LPC filter, and a differential inverse quantizer using the reference corresponding to the extracted reference information to inverse quantize the multi-reference differentially quantized LPC filter.

    摘要翻译： 用于量化输入LPC滤波器的多参考量化装置和方法包括使用各自不同参考的多个差分量化器和使用参考选择准则的差分量化器的不同参考中的参考选择器。 输入LPC滤波器通过使用所选参考的差分量化器进行差分量化。 一种用于对从比特流提取的多参考差分量化LPC滤波器进行逆量化的装置和方法，包括来自比特流的提取器，该信息涉及用于量化多参考差分量化LPC滤波器的多个可能参考中的参考，以及 使用对应于所提取的参考信息的参考来对多参考差分量化LPC滤波器进行逆量化的差分逆量化器。

    Variable bit rate LPC filter quantizing and inverse quantizing device and method
    3.
    发明授权
    Variable bit rate LPC filter quantizing and inverse quantizing device and method 有权
    可变比特率LPC滤波器量化和逆量化设备及方法

    公开(公告)号：US09245532B2

    公开(公告)日：2016-01-26

    申请号：US12501201

    申请日：2009-07-10

    申请人： Philippe Gournay ,  Bruno Bessette ,  Redwan Salami

    发明人： Philippe Gournay ,  Bruno Bessette ,  Redwan Salami

    IPC分类号： G10L19/00 ,  G10L21/00 ,  G10L19/06 ,  H03M7/30 ,  G10L19/18

    CPC分类号： G10L19/06 ,  G10L19/18 ,  H03M7/3082

    摘要： A device and a method for quantizing a LPC filter in the form of an input vector in a quantization domain, comprises a calculator of a first-stage approximation of the input vector, a subtractor of the first-stage approximation from the input vector to produce a residual vector, a calculator of a weighting function from the first-stage approximation, a warper of the residual vector with the weighting function, and a quantizer of the weighted residual vector to supply a quantized weighted residual vector. A device and a method for inverse quantizing of a LPC filter, comprises means for receiving coded indices representative of a first-stage approximation of a vector representative of the LPC filter in a quantization domain and of a quantized weighted residual version of the vector, a calculator of an inverse weighting function from the first-stage approximation, an inverse quantizer of the quantized weighted residual version of the vector to produce a weighted residual vector, a multiplier of the weighted residual vector by the inverse weighting function to produce a residual vector, and an adder of the first-stage approximation with the residual vector to produce the vector representative of the LPC filter in the quantization domain.

    摘要翻译： 在量化域中以输入向量的形式对LPC滤波器进行量化的装置和方法包括：输入向量的第一级逼近的计算器，从输入向量产生的第一级逼近的减法器 一个残差矢量，一个来自第一阶段逼近的加权函数的计算器，具有加权函数的残差向量的整经器，以及加权残差向量的量化器，以提供量化的加权残差向量。 用于LPC滤波器的逆量化的装置和方法包括用于接收代表代表量化域中的LPC滤波器的矢量的第一级逼近的编码索引和矢量的量化加权残差版本的装置， 来自第一阶段近似的逆加权函数的计算器，用于产生加权残差向量的向量的量化加权残差版本的逆量化器，通过逆加权函数的加权残差向量的乘数以产生残差向量， 以及具有残差矢量的第一级近似的加法器，以产生代表量化域中的LPC滤波器的向量。

    Variable Bit Rate LPC Filter Quantizing and Inverse Quantizing Device and Method
    4.
    发明申请
    Variable Bit Rate LPC Filter Quantizing and Inverse Quantizing Device and Method 有权
    可变比特率LPC滤波器量化和反量化设备和方法

    公开(公告)号：US20100023325A1

    公开(公告)日：2010-01-28

    申请号：US12501201

    申请日：2009-07-10

    申请人： Bruno BESSETTE ,  Philippe Gournay ,  Redwan Salami

    发明人： Bruno BESSETTE ,  Philippe Gournay ,  Redwan Salami

    IPC分类号： G10L19/04

    CPC分类号： G10L19/06 ,  G10L19/18 ,  H03M7/3082

    摘要： A device and a method for quantizing a LPC filter in the form of an input vector in a quantization domain, comprises a calculator of a first-stage approximation of the input vector, a subtractor of the first-stage approximation from the input vector to produce a residual vector, a calculator of a weighting function from the first-stage approximation, a warper of the residual vector with the weighting function, and a quantizer of the weighted residual vector to supply a quantized weighted residual vector. A device and a method for inverse quantizing of a LPC filter, comprises means for receiving coded indices representative of a first-stage approximation of a vector representative of the LPC filter in a quantization domain and of a quantized weighted residual version of the vector, a calculator of an inverse weighting function from the first-stage approximation, an inverse quantizer of the quantized weighted residual version of the vector to produce a weighted residual vector, a multiplier of the weighted residual vector by the inverse weighting function to produce a residual vector, and an adder of the first-stage approximation with the residual vector to produce the vector representative of the LPC filter in the quantization domain.

    摘要翻译： 在量化域中以输入向量的形式对LPC滤波器进行量化的装置和方法包括：输入向量的第一级逼近的计算器，从输入向量产生的第一级逼近的减法器 一个残差矢量，一个来自第一阶段逼近的加权函数的计算器，具有加权函数的残差向量的整经器，以及加权残差向量的量化器，以提供量化的加权残差向量。 用于LPC滤波器的逆量化的装置和方法包括用于接收代表代表量化域中的LPC滤波器的矢量的第一级逼近的编码索引和矢量的量化加权残差版本的装置， 来自第一阶段近似的逆加权函数的计算器，用于产生加权残差向量的向量的量化加权残差版本的逆量化器，通过逆加权函数的加权残差向量的乘数以产生残差向量， 以及具有残差矢量的第一级近似的加法器，以产生代表量化域中的LPC滤波器的向量。

    Device and method for quantizing and inverse quantizing LPC filters in a super-frame
    5.
    发明授权
    Device and method for quantizing and inverse quantizing LPC filters in a super-frame 有权
    在超帧中量化和逆量化LPC滤波器的装置和方法

    公开(公告)号：US08712764B2

    公开(公告)日：2014-04-29

    申请号：US12501197

    申请日：2009-07-10

    申请人： Philippe Gournay ,  Bruno Bessette ,  Redwan Salami

    发明人： Philippe Gournay ,  Bruno Bessette ,  Redwan Salami

    IPC分类号： G10L19/04

    CPC分类号： G10L19/06 ,  G10L19/18 ,  H03M7/3082

    摘要： A device and a method for quantizing, in a super-frame including a sequence of frames, LPC filters calculated during the frames of the sequence. The LPC filter quantizing device and method comprises: an absolute quantizer for first quantizing one of the LPC filters using absolute quantization; and at least one quantizer of the other LPC filters using a quantization mode selected from the group consisting of absolute quantization and differential quantization relative to at least one previously quantized filter amongst the LPC filters. For inverse quantizing, at least the first quantized LPC filter is received and an inverse quantizer inverse quantizes the first quantized LPC filter using absolute inverse quantization. If any quantized LPC filter other than the first quantized LPC filter is received, an inverse quantizer inverse quantizes this quantized LPC filter using one of absolute inverse quantization and differential inverse quantization relative to at least one previously received quantized LPC filter.

    摘要翻译： 一种用于在包括帧序列的超帧中量化在序列的帧期间计算的LPC滤波器的装置和方法。 LPC滤波器量化装置和方法包括：绝对量化器，用于使用绝对量化首先量化LPC滤波器之一; 以及使用从相对于LPC滤波器中的至少一个先前量化的滤波器的绝对量化和差分量化组成的组中选择的量化模式的其它LPC滤波器的至少一个量化器。 对于逆量化，至少接收第一量化LPC滤波器，并且逆量化器使用绝对反量化对第一量化LPC滤波器进行逆量化。 如果接收到除了第一量化LPC滤波器之外的任何量化LPC滤波器，则逆量化器相对于至少一个先前接收的量化LPC滤波器，使用绝对反量子化和差分逆量化之一对该量化的LPC滤波器进行逆量化。