公开(公告)号：US08315862B2

公开(公告)日：2012-11-20

申请号：US12479009

申请日：2009-06-05

申请人： Jung Hoe Kim ,  Ho Chong Park ,  Eun Mi Oh

发明人： Jung Hoe Kim ,  Ho Chong Park ,  Eun Mi Oh

IPC分类号： G10L11/00 ,  G10L19/02 ,  G10L19/14 ,  G10L11/04 ,  G10L11/06 ,  G10L21/02

CPC分类号： G10L21/0364

摘要： An audio signal quality enhancement apparatus and method. The apparatus includes a pitch calculating unit to extract a pitch period of an audio signal, a frequency domain transforming unit to transform the audio signal to a frequency domain, a frequency band dividing unit to classify the transformed audio signal into audio signals for each of the plurality of frequency bands based on the extracted pitch period, and a pitch enhancement unit to determine a gain based on a volume of the transformed audio signal, and to generate an output signal by multiplying each of the classified audio signals with respect to each of the plurality of frequency bands by the gain, thereby enhancing quality of the audio signal.

摘要翻译： 一种音频信号质量增强装置和方法。 该装置包括：音调计算单元，用于提取音频信号的音调周期;频域变换单元，用于将音频信号变换到频域;频带分割单元，用于将经变换的音频信号分类为音频信号， 基于所提取的音调周期的多个频带，以及音调增强单元，用于基于经变换的音频信号的音量来确定增益，并且通过将每个分类的音频信号相对于每个音频信号相乘来生成输出信号 通过增益获得多个频带，从而提高音频信号的质量。

公开(公告)号：US20120173247A1

公开(公告)日：2012-07-05

申请号：US13381522

申请日：2010-06-28

申请人： Ho Sang Sung ,  Eun Mi Oh ,  Jung-Hoe Kim ,  Mi Young Kim

发明人： Ho Sang Sung ,  Eun Mi Oh ,  Jung-Hoe Kim ,  Mi Young Kim

IPC分类号： G10L19/00

CPC分类号： G10L19/04 ,  G10L19/002 ,  G10L19/24

摘要： Disclosed is an apparatus for encoding and/or decoding an audio signal having a variable bit rate (VBR). A target bit rate is determined in accordance with characteristics of an audio signal, and a weighted linear predictive transform coding is performed in accordance with the determined target bit rate.

摘要翻译： 公开了一种用于对具有可变比特率（VBR）的音频信号进行编码和/或解码的装置。 根据音频信号的特性确定目标比特率，并且根据确定的目标比特率执行加权的线性预测变换编码。

公开(公告)号：US08706481B2

公开(公告)日：2014-04-22

申请号：US11608956

申请日：2006-12-11

申请人： Kang Eun Lee ,  Eun Mi Oh ,  Ho Sang Sung ,  Chang Yong Son

发明人： Kang Eun Lee ,  Eun Mi Oh ,  Ho Sang Sung ,  Chang Yong Son

IPC分类号： G10L19/12

CPC分类号： G10L19/032

摘要： A method of multi-path trellis coded quantization (TCQ) usable in a speech coding system, and a quantizer using the method. Specifically the method includes calculating accumulated distortions corresponding to 2N survivor paths, wherein N indicates an integer greater than two, each of the 2N survivor paths is going towards one of nodes at an i th stage of a trellis, and i indicates an integer greater than zero, comparing the accumulated distortions respectively corresponding to the 2N survivor paths to select N paths among the 2N survivor paths, wherein the accumulated distortions corresponding to selected N paths are smaller than the accumulated distortions corresponding to unselected N paths establishing the selected N paths as survivor paths going toward an i+1 th stage, and selecting an optimal path among the 2N survivor paths corresponding to each node of a last stage.

摘要翻译： 一种可用于语音编码系统的多径网格编码量化（TCQ）的方法，以及使用该方法的量化器。 具体地，该方法包括计算对应于2N个幸存路径的累积失真，其中N表示大于2的整数，2N个幸存路径中的每一个正在网格的第i阶段中的一个节点，i表示大于 比较分别对应于2N个幸存路径的累积失真以选择2N个幸存路径中的N个路径，其中对应于所选N个路径的累积失真小于对应于建立所选择的N个路径的未选择的N个路径的累积失真作为幸存者 路径朝向第i + 1级，并且在对应于最后一级的每个节点的2N个幸存路径中选择最佳路径。

公开(公告)号：US08914280B2

公开(公告)日：2014-12-16

申请号：US12458961

申请日：2009-07-28

申请人： Ho Sang Sung ,  Eun Mi Oh

发明人： Ho Sang Sung ,  Eun Mi Oh

IPC分类号： G10L19/00

CPC分类号： G10L19/22 ,  G10L19/06 ,  G10L19/09 ,  G10L19/12

摘要： An apparatus and method for encoding/decoding a speech signal which determines a variable bit rate based on reserved bits obtained from a target bit rate, is provided. The variable bit rate is determined based on a source feature of the speech signal and the reserved bits is obtained based on the target bit rate. The apparatus for encoding the speech signal may include a linear predictive (LP) analysis unit/quantization unit to determine an immittance spectral frequencies (ISF) index, a closed loop pitch search unit, a fixed codebook search unit, a gain vector quantization (VQ) unit to determine a gain vector quantization (VQ) index, and a bit rate control unit to control at least two indexes of the ISF index, the pitch index, the code index, and the gain VQ index to be encoded to be variable bit rates based on a source feature of a speech signal and the reserved bits.

摘要翻译： 提供了一种用于对基于从目标比特率获得的保留比特来确定可变比特率的语音信号进行编码/解码的装置和方法。 基于语音信号的源特征确定可变比特率，并且基于目标比特率获得保留比特。 用于编码语音信号的装置可以包括线性预测（LP）分析单元/量化单元，用于确定导频谱频率（ISF）索引，闭环音调搜索单元，固定码本搜索单元，增益矢量量化（VQ ）单元以确定增益矢量量化（VQ）索引，以及比特率控制单元，用于控制要被编码为可变位的ISF索引，音高指数，代码索引和增益VQ索引的至少两个索引 基于语音信号的源特征和保留位的速率。

公开(公告)号：US20120281841A1

公开(公告)日：2012-11-08

申请号：US13508266

申请日：2010-11-04

申请人： Mi Young Kim ,  Eun Mi Oh ,  Yurkov Kirill ,  Kudryashov Boris ,  Porov Anton ,  Osipov Konstantin

发明人： Mi Young Kim ,  Eun Mi Oh ,  Yurkov Kirill ,  Kudryashov Boris ,  Porov Anton ,  Osipov Konstantin

IPC分类号： H04R5/00

CPC分类号： G10L19/008

摘要： Disclosed is an apparatus and method for encoding and decoding a multichannel audio signal. The encoding apparatus may compute a weight matrix from a multichannel audio signal to be encoded, and may extract a base signal from the multichannel audio signal using the computed weight matrix.

摘要翻译： 公开了一种用于对多声道音频信号进行编码和解码的装置和方法。 编码装置可以从要编码的多声道音频信号计算加权矩阵，并且可以使用所计算的权重矩阵从多声道音频信号中提取基本信号。

公开(公告)号：US20120095756A1

公开(公告)日：2012-04-19

申请号：US13067366

申请日：2011-05-26

申请人： Ho Sang Sung ,  Eun Mi Oh

发明人： Ho Sang Sung ,  Eun Mi Oh

IPC分类号： G10L19/00

CPC分类号： G10L19/06 ,  G10L19/07

摘要： Proposed is a method and apparatus for determining a weighting function for quantizing a linear predictive coding (LPC) coefficient and having a low complexity. The weighting function determination apparatus may convert an LPC coefficient of a mid-subframe of an input signal to one of a immitance spectral frequency (ISF) coefficient and a line spectral frequency (LSF) coefficient, and may determine a weighting function associated with an importance of the ISF coefficient or the LSF coefficient based on the converted ISF coefficient or LSF coefficient.

摘要翻译： 提出了一种用于确定用于量化线性预测编码（LPC）系数并具有低复杂度的加权函数的方法和装置。 加权函数确定装置可以将输入信号的子帧的LPC系数转换成子频谱频率（ISF）系数和线谱频率（LSF）系数之一，并且可以确定与重要性相关联的加权函数 基于转换的ISF系数或LSF系数的ISF系数或LSF系数。

公开(公告)号：US20100114566A1

公开(公告)日：2010-05-06

申请号：US12458961

申请日：2009-07-28

申请人： Ho Sang Sung ,  Eun Mi Oh

发明人： Ho Sang Sung ,  Eun Mi Oh

IPC分类号： G10L19/04 ,  G10L19/14

CPC分类号： G10L19/22 ,  G10L19/06 ,  G10L19/09 ,  G10L19/12

摘要： An apparatus and method for encoding/decoding a speech signal which determines a variable bit rate based on reserved bits obtained from a target bit rate, is provided. The variable bit rate is determined based on a source feature of the speech signal and the reserved bits is obtained based on the target bit rate. The apparatus for encoding the speech signal may include a linear predictive (LP) analysis unit/quantization unit to determine an immittance spectral frequencies (ISF) index, a closed loop pitch search unit, a fixed codebook search unit, a gain vector quantization (VQ) unit to determine a gain vector quantization (VQ) index, and a bit rate control unit to control at least two indexes of the ISF index, the pitch index, the code index, and the gain VQ index to be encoded to be variable bit rates based on a source feature of a speech signal and the reserved bits.

摘要翻译： 提供了一种用于对基于从目标比特率获得的保留比特来确定可变比特率的语音信号进行编码/解码的装置和方法。 基于语音信号的源特征确定可变比特率，并且基于目标比特率获得保留比特。 用于编码语音信号的装置可以包括线性预测（LP）分析单元/量化单元，用于确定导频谱频率（ISF）索引，闭环音调搜索单元，固定码本搜索单元，增益矢量量化（VQ ）单元以确定增益矢量量化（VQ）索引，以及比特率控制单元，用于控制要被编码为可变位的ISF索引，音高指数，代码索引和增益VQ索引的至少两个索引 基于语音信号的源特征和保留位的速率。

公开(公告)号：US20070233473A1

公开(公告)日：2007-10-04

申请号：US11608956

申请日：2006-12-11

申请人： Kang Eun LEE ,  Eun Mi Oh ,  Ho Sang Sung ,  Chang Yong Son

发明人： Kang Eun LEE ,  Eun Mi Oh ,  Ho Sang Sung ,  Chang Yong Son

IPC分类号： G10L19/00

CPC分类号： G10L19/032

摘要： A method of multi-path trellis coded quantization (TCQ) usable in a speech coding system, and a quantizer using the method. Specifically the method includes calculating accumulated distortions corresponding to 2N survivor paths, wherein N indicates an integer greater than two, each of the 2N survivor paths is going towards one of nodes at an i th stage of a trellis, and i indicates an integer greater than zero, comparing the accumulated distortions respectively corresponding to the 2N survivor paths to select N paths among the 2N survivor paths, wherein the accumulated distortions corresponding to selected N paths are smaller than the accumulated distortions corresponding to unselected N paths establishing the selected N paths as survivor paths going toward an i+1 th stage, and selecting an optimal path among the 2N survivor paths corresponding to each node of a last stage.

摘要翻译： 一种可用于语音编码系统的多径网格编码量化（TCQ）的方法，以及使用该方法的量化器。 具体地，该方法包括计算对应于2N个幸存路径的累积失真，其中N表示大于2的整数，2N个幸存路径中的每一个正在网格的第i阶段中的一个节点，i表示大于 比较分别对应于2N个幸存路径的累积失真以选择2N个幸存路径中的N个路径，其中对应于所选N个路径的累积失真小于对应于建立所选择的N个路径的未选择的N个路径的累积失真作为幸存者 路径朝向第i + 1级，并且在对应于最后一级的每个节点的2N个幸存路径中选择最佳路径。

公开(公告)号：US09311926B2

公开(公告)日：2016-04-12

申请号：US13067366

申请日：2011-05-26

申请人： Ho Sang Sung ,  Eun Mi Oh

发明人： Ho Sang Sung ,  Eun Mi Oh

IPC分类号： G10L19/07 ,  G10L19/04 ,  G10L25/12

CPC分类号： G10L19/06 ,  G10L19/07

摘要： Proposed is a method and apparatus for determining a weighting function for quantizing a linear predictive coding (LPC) coefficient and having a low complexity. The weighting function determination apparatus may convert an LPC coefficient of a mid-subframe of an input signal to one of a immitance spectral frequency (ISF) coefficient and a line spectral frequency (LSF) coefficient, and may determine a weighting function associated with an importance of the ISF coefficient or the LSF coefficient based on the converted ISF coefficient or LSF coefficient.

摘要翻译： 提出了一种用于确定用于量化线性预测编码（LPC）系数并具有低复杂度的加权函数的方法和装置。 加权函数确定装置可以将输入信号的子帧的LPC系数转换成子频谱频率（ISF）系数和线谱频率（LSF）系数之一，并且可以确定与重要性相关联的加权函数 基于转换的ISF系数或LSF系数的ISF系数或LSF系数。

公开(公告)号：US09236059B2

公开(公告)日：2016-01-12

申请号：US13067370

申请日：2011-05-26

申请人： Ho Sang Sung ,  Eun Mi Oh

发明人： Ho Sang Sung ,  Eun Mi Oh

IPC分类号： G10L19/07

CPC分类号： G10L19/06 ,  G10L19/032 ,  G10L19/07

摘要： An apparatus determining a weighting function for line prediction coding coefficients quantization converts a linear prediction coding (LPC) coefficient of an input signal into one of a line spectral frequency (LSF) coefficient and an immitance spectral frequency (ISF) coefficient and determines a weighting function associated with one of an importance of the ISF coefficient and importance of the LSF coefficient using one of the converted ISF coefficient and the converted LSF coefficient.

摘要翻译： 确定行预测编码系数量化的加权函数的装置将输入信号的线性预测编码（LPC）系数转换为线谱频率（LSF）系数和子频谱频率（ISF）系数之一，并确定加权函数 与ISF系数的重要性和LSF系数的重要性之一相关联，使用转换的ISF系数和转换的LSF系数之一。