利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

25 条记录 (耗时 0.028 秒)

    Methods and Apparatus to Quantize and Dequantize Linear Predictive Coding Coefficient
    1.
    发明申请
    Methods and Apparatus to Quantize and Dequantize Linear Predictive Coding Coefficient 有权
    量化和去量化线性预测编码系数的方法和装置

    公开(公告)号：US20080183465A1

    公开(公告)日：2008-07-31

    申请号：US11911775

    申请日：2006-11-15

    申请人： Chang-Yong Son ,  Eun-Mi Oh ,  Ho-Sang Sung ,  Kang-Eun Lee ,  Ki-Hyun Choo ,  Jung-Hoe Kim

    发明人： Chang-Yong Son ,  Eun-Mi Oh ,  Ho-Sang Sung ,  Kang-Eun Lee ,  Ki-Hyun Choo ,  Jung-Hoe Kim

    IPC分类号： G10L19/04

    CPC分类号： G10L19/07 ,  G10L2019/0005

    摘要： A method and apparatus to convert a linear predictive coding (LPC) coefficient into a coefficient having order characteristics, such as a line spectrum frequency (LSF), and to vector quantize the coefficient having the order characteristics when a speech signal is encoded. The method and apparatus split the vector of the coefficient having the order characteristics into a plurality of subvectors, select a codebook in which an available bit is variably allocated to each subvector according to distribution of elements of each subvector, and quantize each subvector according to the selected codebook. The method and apparatus use normalized codebooks.

    摘要翻译： 将线性预测编码（LPC）系数转换成具有诸如线谱频率（LSF）等阶特征的系数的方法和装置，并且在语音信号被编码时向矢量量化具有阶特征的系数。 该方法和装置将具有有序特征的系数的向量分解为多个子向量，根据每个子向量的元素的分布，选择可用比特被可变地分配给每个子向量的码本，并且根据 所选码本。 该方法和装置使用归一化码本。

    Coefficient splitting structure for vector quantization bit allocation and dequantization
    2.
    发明授权
    Coefficient splitting structure for vector quantization bit allocation and dequantization 有权
    用于矢量量化位分配和去量化的系数分解结构

    公开(公告)号：US08630849B2

    公开(公告)日：2014-01-14

    申请号：US11911775

    申请日：2006-11-15

    申请人： Chang-Yong Son ,  Eun-Mi Oh ,  Ho-Sang Sung ,  Kang-Eun Lee ,  Ki-Hyun Choo ,  Jung-Hoe Kim

    发明人： Chang-Yong Son ,  Eun-Mi Oh ,  Ho-Sang Sung ,  Kang-Eun Lee ,  Ki-Hyun Choo ,  Jung-Hoe Kim

    IPC分类号： G10L19/12 ,  G10L21/00

    CPC分类号： G10L19/07 ,  G10L2019/0005

    摘要： A method and apparatus to convert a linear predictive coding (LPC) coefficient into a coefficient having order characteristics, such as a line spectrum frequency (LSF), and to vector quantize the coefficient having the order characteristics when a speech signal is encoded. The method and apparatus split the vector of the coefficient having the order characteristics into a plurality of subvectors, select a codebook in which an available bit is variably allocated to each subvector according to distribution of elements of each subvector, and quantize each subvector according to the selected codebook. The method and apparatus use normalized codebooks.

    摘要翻译： 将线性预测编码（LPC）系数转换成具有诸如线谱频率（LSF）等阶特征的系数的方法和装置，并且在语音信号被编码时向矢量量化具有阶特征的系数。 该方法和装置将具有有序特征的系数的向量分解为多个子向量，根据每个子向量的元素的分布，选择可用比特被可变地分配给每个子向量的码本，并且根据 所选码本。 该方法和装置使用归一化码本。

    Context-based arithmetic encoding apparatus and method and context-based arithmetic decoding apparatus and method
    5.
    发明申请
    Context-based arithmetic encoding apparatus and method and context-based arithmetic decoding apparatus and method 有权
    基于上下文的算术编码装置和方法以及基于上下文的算术解码装置和方法

    公开(公告)号：US20100324912A1

    公开(公告)日：2010-12-23

    申请号：US12801632

    申请日：2010-06-17

    申请人： Ki Hyun Choo ,  Jung-Hoe Kim ,  Eun Mi Oh

    发明人： Ki Hyun Choo ,  Jung-Hoe Kim ,  Eun Mi Oh

    IPC分类号： G10L19/00

    CPC分类号： G10L19/20 ,  G10L19/0017 ,  H03M7/4006 ,  H03M7/4012 ,  H03M7/4018

    摘要： Disclosed are a context-based arithmetic encoding apparatus and method and a context-based arithmetic decoding apparatus and method. The context-based arithmetic decoding apparatus may determine a context of a current N-tuple to be decoded, determine a Most Significant Bit (MSB) context corresponding to an MSB symbol of the current N-tuple, and determine a probability model using the context of the N-tuple and the MSB context. Subsequently, the context-based arithmetic decoding apparatus may perform a decoding on an MSB based on the determined probability model, and perform a decoding on a Least Significant Bit (LSB) based on a bit depth of the LSB derived from a process of decoding on an escape code.

    摘要翻译： 公开了一种基于上下文的算术编码装置和方法以及基于上下文的算术解码装置和方法。 基于上下文的算术解码装置可以确定要解码的当前N元组的上下文，确定与当前N元组的MSB符号相对应的最高有效位（MSB）上下文，并使用上下文确定概率模型 的N元组和MSB上下文。 随后，基于上下文的算术解码装置可以基于所确定的概率模型对MSB执行解码，并且基于从解码处理导出的LSB的位深度对最低有效位（LSB）执行解码 一个转义码。

    Context-based arithmetic encoding apparatus and method and context-based arithmetic decoding apparatus and method
    8.
    发明授权
    Context-based arithmetic encoding apparatus and method and context-based arithmetic decoding apparatus and method 有权
    基于上下文的算术编码装置和方法以及基于上下文的算术解码装置和方法

    公开(公告)号：US09171550B2

    公开(公告)日：2015-10-27

    申请号：US12801632

    申请日：2010-06-17

    申请人： Ki Hyun Choo ,  Jung-Hoe Kim ,  Eun Mi Oh

    发明人： Ki Hyun Choo ,  Jung-Hoe Kim ,  Eun Mi Oh

    IPC分类号： G10L19/00 ,  G10L21/04 ,  H03M7/00 ,  H04N7/26 ,  G10L19/20 ,  H03M7/40

    CPC分类号： G10L19/20 ,  G10L19/0017 ,  H03M7/4006 ,  H03M7/4012 ,  H03M7/4018

    摘要： Disclosed are a context-based arithmetic encoding apparatus and method and a context-based arithmetic decoding apparatus and method. The context-based arithmetic decoding apparatus may determine a context of a current N-tuple to be decoded, determine a Most Significant Bit (MSB) context corresponding to an MSB symbol of the current N-tuple, and determine a probability model using the context of the N-tuple and the MSB context. Subsequently, the context-based arithmetic decoding apparatus may perform a decoding on an MSB based on the determined probability model, and perform a decoding on a Least Significant Bit (LSB) based on a bit depth of the LSB derived from a process of decoding on an escape code.

    摘要翻译： 公开了一种基于上下文的算术编码装置和方法以及基于上下文的算术解码装置和方法。 基于上下文的算术解码装置可以确定要解码的当前N元组的上下文，确定与当前N元组的MSB符号相对应的最高有效位（MSB）上下文，并使用上下文确定概率模型 的N元组和MSB上下文。 随后，基于上下文的算术解码装置可以基于所确定的概率模型对MSB执行解码，并且基于从解码处理导出的LSB的位深度对最低有效位（LSB）执行解码 一个转义码。

    Adaptive time and/or frequency-based encoding mode determination apparatus and method of determining encoding mode of the apparatus
    9.
    发明授权
    Adaptive time and/or frequency-based encoding mode determination apparatus and method of determining encoding mode of the apparatus 有权
    自适应时间和/或基于频率的编码模式确定装置和确定装置的编码模式的方法

    公开(公告)号：US08744841B2

    公开(公告)日：2014-06-03

    申请号：US11524274

    申请日：2006-09-21

    申请人： Eun Mi Oh ,  Ki Hyun Choo ,  Jung-Hoe Kim ,  Chang Yong Son

    发明人： Eun Mi Oh ,  Ki Hyun Choo ,  Jung-Hoe Kim ,  Chang Yong Son

    IPC分类号： G10L19/00

    CPC分类号： G10L19/0208 ,  G10L19/22

    摘要： An adaptive time/frequency-based encoding mode determination apparatus including a time domain feature extraction unit to generate a time domain feature by analysis of a time domain signal of an input audio signal, a frequency domain feature extraction unit to generate a frequency domain feature corresponding to each frequency band generated by division of a frequency domain corresponding to a frame of the input audio signal into a plurality of frequency domains, by analysis of a frequency domain signal of the input audio signal, and a mode determination unit to determine any one of a time-based encoding mode and a frequency-based encoding mode, with respect to the each frequency band, by use of the time domain feature and the frequency domain feature.

    摘要翻译： 一种自适应时间/频率编码模式确定装置，包括：时域特征提取单元，用于通过分析输入音频信号的时域信号来产生时域特征;频域特征提取单元，用于产生相应的频域特征; 通过对输入音频信号的频域信号的分析和模式确定单元来确定通过将与输入音频信号的帧相对应的频域划分成多个频域而产生的每个频带，以确定任何一个 基于时间的编码模式和基于频率的编码模式，通过使用时域特征和频域特征，相对于每个频带。

    CONTEXT-BASED ARITHMETIC ENCODING APPARATUS AND METHOD AND CONTEXT-BASED ARITHMETIC DECODING APPARATUS AND METHOD
    10.
    发明申请
    CONTEXT-BASED ARITHMETIC ENCODING APPARATUS AND METHOD AND CONTEXT-BASED ARITHMETIC DECODING APPARATUS AND METHOD 有权
    基于语境的算术编码设备和方法和基于语境的算术解码设备和方法

    公开(公告)号：US20120221325A1

    公开(公告)日：2012-08-30

    申请号：US13464529

    申请日：2012-05-04

    申请人： Ki Hyun CHOO ,  Jung-Hoe Kim ,  Eun Mi Oh

    发明人： Ki Hyun CHOO ,  Jung-Hoe Kim ,  Eun Mi Oh

    IPC分类号： G10L19/04

    CPC分类号： G10L19/20 ,  G10L19/0017 ,  H03M7/4006 ,  H03M7/4012 ,  H03M7/4018

    摘要： Disclosed are a context-based arithmetic encoding apparatus and method and a context-based arithmetic decoding apparatus and method. The context-based arithmetic decoding apparatus may determine a context of a current N-tuple to be decoded, determine a Most Significant Bit (MSB) context corresponding to an MSB symbol of the current N-tuple, and determine a probability model using the context of the N-tuple and the MSB context. Subsequently, the context-based arithmetic decoding apparatus may perform a decoding on an MSB based on the determined probability model, and perform a decoding on a Least Significant Bit (LSB) based on a bit depth of the LSB derived from a process of decoding on an escape code.

    摘要翻译： 公开了一种基于上下文的算术编码装置和方法以及基于上下文的算术解码装置和方法。 基于上下文的算术解码装置可以确定要解码的当前N元组的上下文，确定与当前N元组的MSB符号相对应的最高有效位（MSB）上下文，并使用上下文确定概率模型 的N元组和MSB上下文。 随后，基于上下文的算术解码装置可以基于所确定的概率模型对MSB执行解码，并且基于从解码处理导出的LSB的位深度对最低有效位（LSB）执行解码 一个转义码。