公开(公告)号：US20100174536A1

公开(公告)日：2010-07-08

申请号：US12620394

申请日：2009-11-17

申请人： Bruno Bessette ,  Redwan Salami ,  Roch Lefebvre

发明人： Bruno Bessette ,  Redwan Salami ,  Roch Lefebvre

IPC分类号： G10L11/04

CPC分类号： G10L19/26 ,  G10L2019/0011

摘要： A pitch search method and device for digitally encoding a wideband signal, in particular but not exclusively a speech signal, in view of transmitting, or storing, and synthesizing this wideband sound signal. The new method and device which achieve efficient modeling of the harmonic structure of the speech spectrum uses several forms of low pass filters applied to a pitch codevector, the one yielding higher prediction gain (i.e. the lowest pitch prediction error) is selected and the associated pitch codebook parameters are forwarded.

摘要翻译： 考虑到发送或存储和合成该宽带声音信号，用于对宽带信号进行数字编码的音调搜索方法和装置，特别地但不排他地是语音信号。 实现语音频谱谐波结构的有效建模的新方法和装置使用几种形式的应用于音调码矢量的低通滤波器，选择产生较高预测增益（即，最低音调预测误差）的一种形式，并且相关音调 码本参数被转发。

公开(公告)号：US07672837B2

公开(公告)日：2010-03-02

申请号：US11498771

申请日：2006-08-04

申请人： Bruno Bessette ,  Redwan Salami ,  Roch Lefebvre

发明人： Bruno Bessette ,  Redwan Salami ,  Roch Lefebvre

IPC分类号： G10L11/04 ,  G10L19/00

CPC分类号： G10L19/26 ,  G10L2019/0011

摘要： A pitch search method and device for digitally encoding a wideband signal, in particular but not exclusively a speech signal, in view of transmitting, or storing, and synthesizing this wideband sound signal. The new method and device which achieve efficient modeling of the harmonic structure of the speech spectrum uses several forms of low pass filters applied to a pitch codevector, the one yielding higher prediction gain (i.e. the lowest pitch prediction error) is selected and the associated pitch codebook parameters are forwarded.

摘要翻译： 考虑到发送或存储和合成该宽带声音信号，用于对宽带信号进行数字编码的音调搜索方法和装置，特别地但不排他地是语音信号。 实现语音频谱谐波结构的有效建模的新方法和装置使用几种形式的应用于音调码矢量的低通滤波器，选择产生较高预测增益（即，最低音调预测误差）的一种形式，并且相关音调 码本参数被转发。

公开(公告)号：US20100023324A1

公开(公告)日：2010-01-28

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： G10L19/14

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。

公开(公告)号：US20100023323A1

公开(公告)日：2010-01-28

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： G10L19/14

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标准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。

公开(公告)号：US07191123B1

公开(公告)日：2007-03-13

申请号：US10129945

申请日：2000-11-17

申请人： Bruno Bessette ,  Redwan Salami ,  Roch Lefebvre

发明人： Bruno Bessette ,  Redwan Salami ,  Roch Lefebvre

IPC分类号： G10L19/14 ,  G10L21/02 ,  G10L11/06

CPC分类号： G10L19/083 ,  G10L2019/0012

摘要： The gain smoothing method and device modify the amplitude of an innovative codevector in relation to background noise present in a previously sampled wideband signal. The gain smoothing device comprises a gain smoothing calculator for calculating a smoothing gain in response to a factor representative of voicing in the sampled wideband signal, a factor representative of the stability of a set of linear prediction filter coefficients, and an innovative codebook gain. The gain smoothing device also comprises an amplifier for amplifying the innovative codevector with the smoothing gain to thereby produce a gain-smoothed innovative codevector. The function of the gain-smoothing device improves the perceived synthesized signal when background noise is present in the sampled wideband signal.

摘要翻译： 增益平滑方法和装置相对于存在于先前采样的宽带信号中的背景噪声来修改创新码矢量的幅度。 增益平滑装置包括：增益平滑计算器，用于响应于表示采样的宽带信号中的发声的因子，表示一组线性预测滤波器系数的稳定性的因子和创新的码本增益来计算平滑增益。 增益平滑装置还包括用于利用平滑增益放大创新码矢量的放大器，从而产生增益平滑的创新码矢量。 当采样宽带信号中存在背景噪声时，增益平滑装置的功能改善了感知到的合成信号。

公开(公告)号：US20060277036A1

公开(公告)日：2006-12-07

申请号：US11498771

申请日：2006-08-04

申请人： Bruno Bessette ,  Redwan Salami ,  Roch Lefebvre

发明人： Bruno Bessette ,  Redwan Salami ,  Roch Lefebvre

IPC分类号： G10L11/04

CPC分类号： G10L19/26 ,  G10L2019/0011

摘要： A pitch search method and device for digitally encoding a wideband signal, in particular but not exclusively a speech signal, in view of transmitting, or storing, and synthesizing this wideband sound signal. The new method and device which achieve efficient modeling of the harmonic structure of the speech spectrum uses several forms of low pass filters applied to a pitch codevector, the one yielding higher prediction gain (i.e. the lowest pitch prediction error) is selected and the associated pitch codebook parameters are forwarded.

摘要翻译： 考虑到发送或存储和合成该宽带声音信号，用于对宽带信号进行数字编码的音调搜索方法和装置，特别地但不排他地是语音信号。 实现语音频谱谐波结构的有效建模的新方法和装置使用几种形式的应用于音调码矢量的低通滤波器，选择产生较高预测增益（即，最低音调预测误差）的一种形式，并且相关音调 码本参数被转发。

公开(公告)号：US06795805B1

公开(公告)日：2004-09-21

申请号：US09830331

申请日：2001-07-23

申请人： Bruno Bessette ,  Redwan Salami ,  Roch Lefebvre

发明人： Bruno Bessette ,  Redwan Salami ,  Roch Lefebvre

IPC分类号： G10L1912

CPC分类号： G10L19/26 ,  G10L2019/0011

摘要： An alternative approach by which periodicity enhancement of an excitation signal is achieved through filtering an innovative codevector by an innovation filter to reduce low frequency content of the innovative codevector and enhance the periodicity at low frequencies more than high frequencies.

摘要翻译： 激励信号的周期性增强的另一种方法是通过用创新滤波器过滤创新码矢来实现，以减少创新码矢量的低频内容，并提高低频率下的周期性高于高频。