公开(公告)号：US07472056B2

公开(公告)日：2008-12-30

申请号：US10749748

申请日：2003-12-30

申请人： Jongmo Sung ,  Hyun Woo Kim ,  Do Young Kim ,  Jin Kyu Choi ,  Sung Wan Yoon ,  Hong Goo Kang ,  Ki Seung Lee ,  Dae Hee Youn

发明人： Jongmo Sung ,  Hyun Woo Kim ,  Do Young Kim ,  Jin Kyu Choi ,  Sung Wan Yoon ,  Hong Goo Kang ,  Ki Seung Lee ,  Dae Hee Youn

IPC分类号： G01L19/00 ,  G01L19/02 ,  G01L19/12 ,  G01L19/14

CPC分类号： G10L19/173 ,  G10L19/12

摘要： A transcoder for use between speech codecs using different Code-Excited Linear Prediction (CELP) type and a method therefor are disclosed. The transcoder includes a decoding unit of an input CELP codec, a transcoding filter, a transcoding filter design unit, and an encoding unit of an output CELP codec. By substituting a post-filter and a perceptual weighting filter of a prior art with one transcoding filter, the calculation amount of the transcoder is reduced, and speech quality decoded at a receiving end is improved.

摘要翻译： 公开了使用不同的代码激励线性预测（CELP）类型的语音编解码器及其方法之间使用的代码转换器。 代码转换器包括输入CELP编解码器，代码转换滤波器，代码转换滤波器设计单元和输出CELP编解码器的编码单元的解码单元。 通过使用一个代码转换滤波器代替现有技术的后置滤波器和感知加权滤波器，降低了代码转换器的计算量，并提高了在接收端解码的语音质量。

公开(公告)号：US08498875B2

公开(公告)日：2013-07-30

申请号：US12673536

申请日：2008-08-18

申请人： Jongmo Sung ,  Do-Young Kim

发明人： Jongmo Sung ,  Do-Young Kim

IPC分类号： G10L21/00

CPC分类号： G10L19/24 ,  G10L19/002

摘要： Provided is a method and apparatus for encoding and decoding an enhancement layer to reduce quantization error in a G.711 codec. Exponent indices of additional mantissa information of each sample are calculated based upon exponent information of each sample in a frame. A process of allocating 1 bit to each sample with a current exponent index is repeated, the exponent index starting from the maximum value while decreasing by 1 at every repetition until the total number of bits allocated to the samples is equal to the total number of available bits in the frame. And the most significant bits, as many as the number of bits allocated to each sample, are extracted from the additional mantissa information of each sample in the frame.

摘要翻译： 提供了一种用于对增强层进行编码和解码以减少G.711编解码器中的量化误差的方法和装置。 基于帧中每个样本的指数信息计算每个样本的额外尾数信息的指数索引。 重复以当前指数索引为每个样本分配1位的过程，指数指数从最大值开始，同时每次重复减少1，直到分配给样本的总位数等于可用总数 帧中的位。 并且从帧中的每个样本的附加尾数信息中提取与分配给每个样本的位数一样多的最高有效位。

公开(公告)号：US07596492B2

公开(公告)日：2009-09-29

申请号：US10943118

申请日：2004-09-15

申请人： Jongmo Sung ,  Do-Young Kim

发明人： Jongmo Sung ,  Do-Young Kim

IPC分类号： G10L19/12

CPC分类号： G10L19/005 ,  G10L19/0204 ,  G10L19/04

摘要： An apparatus for concealing a highband error in a spilt-band wideband voice codec in accordance with the present invention is disclosed. The apparatus includes: a lowband LPC coefficient extracting unit for extracting a lowband linear predictive coding (LPC) coefficient from a lowband voice signal passed by a lowband decoding unit; a highband excitation signal generating unit for generating a highband excitation signal based on the lowband voice signal and the lowband LPC coefficient; a highband LPC coefficient generating unit for generating a highband LPC coefficient based on the lowband LPC coefficient; a highband voice synthesizing unit for synthesizing a highband voice signal based on the highband excitation signal and the highband LPC coefficient; and a high pass filtering unit for removing a lowband component of the synthesized highband voice signal by the highband voice synthesis unit and generating the synthesized highband voice signal.

摘要翻译： 公开了一种用于隐藏根据本发明的溢出带宽带语音编解码器中的高频误差的装置。 该装置包括：低频LPC系数提取单元，用于从低频解码单元通过的低频语音信号中提取低频带线性预测编码（LPC）系数; 高频激励信号发生单元，用于基于低频带语音信号和低频带LPC系数产生高频激励信号; 高频LPC系数产生单元，用于基于低频带LPC系数产生高频LPC系数; 高频语音合成单元，用于根据高频激励信号和高频LPC系数合成高频语音信号; 以及高通滤波单元，用于通过高频语音合成单元去除合成高频语音信号的低频分量，并产生合成的高频语音信号。

公开(公告)号：US20110106532A1

公开(公告)日：2011-05-05

申请号：US12673536

申请日：2008-08-18

申请人： Jongmo Sung ,  Do-Young Kim

发明人： Jongmo Sung ,  Do-Young Kim

IPC分类号： G10L19/02

CPC分类号： G10L19/24 ,  G10L19/002

摘要： Provided is a method and apparatus for encoding and decoding an enhancement layer to reduce quantization error in a G.711 codec. Exponent indices of additional mantissa information of each sample are calculated based upon exponent information of each sample in a frame. A process of allocating 1 bit to each sample with a current exponent index is repeated, the exponent index starting from the maximum value while decreasing by 1 at every repetition until the total number of bits allocated to the samples is equal to the total number of available bits in the frame. And the most significant bits, as many as the number of bits allocated to each sample, are extracted from the additional mantissa information of each sample in the frame.

摘要翻译： 提供了一种用于对增强层进行编码和解码以减少G.711编解码器中的量化误差的方法和装置。 基于帧中每个样本的指数信息计算每个样本的额外尾数信息的指数索引。 重复以当前指数索引为每个样本分配1位的过程，指数指数从最大值开始，同时每次重复减少1，直到分配给样本的总位数等于可用总数 帧中的位。 并且从帧中的每个样本的附加尾数信息中提取与分配给每个样本的位数一样多的最高有效位。

公开(公告)号：US07693269B2

公开(公告)日：2010-04-06

申请号：US11229468

申请日：2005-09-15

申请人： Jongmo Sung ,  Do-Young Kim ,  Young-Sun Kim

发明人： Jongmo Sung ,  Do-Young Kim ,  Young-Sun Kim

IPC分类号： H04M1/56 ,  H04M15/06

CPC分类号： H04L29/06027 ,  H04L12/14 ,  H04L63/0823 ,  H04L63/126 ,  H04L65/1069 ,  H04L2463/081 ,  H04M15/00 ,  H04M15/06 ,  H04M15/10 ,  H04M15/48 ,  H04M15/56 ,  H04M15/73 ,  H04M15/80 ,  H04M2215/0152 ,  H04M2215/0156 ,  H04M2215/202 ,  H04M2215/7072

摘要： A caller identification system provides a caller identifier of an actual user rather than the conventional telephone number dependent on a caller terminal. Further, a caller base billing method and its system can bill an actual user by carrying out user authentication through a certification authority for a caller identifier that is independent of a caller terminal. The method includes the steps of receiving authentication information of the caller from a caller terminal; verifying the authentication information; and carrying out call setup if the authentication information and the certificate match, wherein the authentication information is generated by using a caller identifier and a private key that are applied by the caller, with no dependency on the caller terminal, and caller information corresponding to the caller identifier is transmitted to a callee terminal during call setup.

摘要翻译： 呼叫者识别系统提供实际用户的呼叫者标识符，而不是依赖于呼叫者终端的常规电话号码。 此外，呼叫者基本计费方法及其系统可以通过对独立于呼叫者终端的呼叫者标识符的认证机构进行用户认证来对实际用户进行账单。 该方法包括从呼叫者终端接收呼叫者的认证信息的步骤; 验证认证信息; 以及如果认证信息和证书匹配，则执行呼叫建立，其中通过使用呼叫者应用的呼叫者标识符和私钥来生成认证信息，而不依赖于呼叫者终端，以及对应于呼叫者信息的呼叫者信息 在呼叫建立期间，呼叫者标识符被传送到被叫终端。

公开(公告)号：US07684978B2

公开(公告)日：2010-03-23

申请号：US10697909

申请日：2003-10-30

申请人： Jongmo Sung ,  Sang Taick Park ,  Do Young Kim ,  Bong Tae Kim

发明人： Jongmo Sung ,  Sang Taick Park ,  Do Young Kim ,  Bong Tae Kim

IPC分类号： G10L19/12 ,  G10L19/14 ,  G10L19/06 ,  G10L19/00 ,  G10L13/00

CPC分类号： G10L19/173 ,  G10L19/12

摘要： The present invention overcomes problems of tandem coding method such as degradation of speech quality, increased system latency and computations. An apparatus for trans-coding between code excited linear prediction (CELP) type codecs with different bandwidths, includes: a format parameter translating unit for generating output formant parameters by translating formant parameters from input CELP format to output CELP format; a formant parameter quantizing unit for receiving the output format formant parameters and quantizing the output format formant filter coefficients; an excited parameter translating unit for generating output excitation parameters by translating excitation parameters from input CELP format to output CELP format; and an excitation quantizing unit for receiving the output format excitation parameters and quantizing the output format excitation parameters.

摘要翻译： 本发明克服了语音质量下降，系统延迟和计算增加等串联编码方法的问题。 一种用于在具有不同带宽的码激励线性预测（CELP）型编解码器之间进行转码的装置，包括：格式参数转换单元，用于通过将共振峰参数从输入CELP格式转换为输出CELP格式来产生输出共振峰参数; 共振峰参数量化单元，用于接收输出格式共振峰参数并量化输出格式共振峰滤波器系数; 激励参数转换单元，用于通过将激励参数从输入CELP格式转换为输出CELP格式来产生输出激励参数; 以及激励量化单元，用于接收输出格式激励参数并量化输出格式激励参数。

公开(公告)号：US20060120345A1

公开(公告)日：2006-06-08

申请号：US11229468

申请日：2005-09-15

申请人： Jongmo Sung ,  Do-Young Kim ,  Young-Sun Kim

发明人： Jongmo Sung ,  Do-Young Kim ,  Young-Sun Kim

IPC分类号： H04L12/28

CPC分类号： H04L29/06027 ,  H04L12/14 ,  H04L63/0823 ,  H04L63/126 ,  H04L65/1069 ,  H04L2463/081 ,  H04M15/00 ,  H04M15/06 ,  H04M15/10 ,  H04M15/48 ,  H04M15/56 ,  H04M15/73 ,  H04M15/80 ,  H04M2215/0152 ,  H04M2215/0156 ,  H04M2215/202 ,  H04M2215/7072

摘要： A caller identification system provides a caller identifier of an actual user rather than the conventional telephone number dependent on a caller terminal. Further, a caller base billing method and its system can bill an actual user by carrying out user authentication through a certification authority for a caller identifier that is independent of a caller terminal. The method includes the steps of receiving authentication information of the caller from a caller terminal; verifying the authentication information; and carrying out call setup if the authentication information and the certificate match, wherein the authentication information is generated by using a caller identifier and a private key that are applied by the caller, with no dependency on the caller terminal, and caller information corresponding to the caller identifier is transmitted to a callee terminal during call setup.

摘要翻译： 呼叫者识别系统提供实际用户的呼叫者标识符，而不是依赖于呼叫者终端的常规电话号码。 此外，呼叫者基本计费方法及其系统可以通过对独立于呼叫者终端的呼叫者标识符的认证机构进行用户认证来对实际用户进行账单。 该方法包括从呼叫者终端接收呼叫者的认证信息的步骤; 验证认证信息; 以及如果认证信息和证书匹配，则执行呼叫建立，其中通过使用呼叫者应用的呼叫者标识符和私钥来生成认证信息，而不依赖于呼叫者终端，以及对应于呼叫者信息的呼叫者信息 在呼叫建立期间，呼叫者标识符被传送到被叫终端。

公开(公告)号：US20050143985A1

公开(公告)日：2005-06-30

申请号：US10943118

申请日：2004-09-15

申请人： Jongmo Sung ,  Do-Young Kim

发明人： Jongmo Sung ,  Do-Young Kim

IPC分类号： H04L27/22 ,  G10L19/00 ,  G10L19/02 ,  G10L19/04

CPC分类号： G10L19/005 ,  G10L19/0204 ,  G10L19/04

摘要： An apparatus for concealing a highband error in a spilt-band wideband voice codec in accordance with the present invention is disclosed. The apparatus includes: a lowband LPC coefficient extracting unit for extracting a lowband linear predictive coding (LPC) coefficient from a lowband voice signal passed by a lowband decoding unit; a highband excitation signal generating unit for generating a highband excitation signal based on the lowband voice signal and the lowband LPC coefficient; a highband LPC coefficient generating unit for generating a highband LPC coefficient based on the lowband LPC coefficient; a highband voice synthesizing unit for synthesizing a highband voice signal based on the highband excitation signal and the highband LPC coefficient; and a high pass filtering unit for removing a lowband component of the synthesized highband voice signal by the highband voice synthesis unit and generating the synthesized highband voice signal.

摘要翻译： 公开了一种用于隐藏根据本发明的溢出带宽带语音编解码器中的高频误差的装置。 该装置包括：低频LPC系数提取单元，用于从低频解码单元通过的低频语音信号中提取低频带线性预测编码（LPC）系数; 高频激励信号发生单元，用于基于低频带语音信号和低频带LPC系数产生高频激励信号; 高频LPC系数产生单元，用于基于低频带LPC系数产生高频LPC系数; 高频语音合成单元，用于根据高频激励信号和高频LPC系数合成高频语音信号; 以及高通滤波单元，用于通过高频语音合成单元去除合成高频语音信号的低频分量，并产生合成的高频语音信号。

公开(公告)号：US20130030795A1

公开(公告)日：2013-01-31

申请号：US13638364

申请日：2011-03-31

申请人： Jongmo Sung ,  Hyun Woo Kim ,  Hyun Joo Bae

发明人： Jongmo Sung ,  Hyun Woo Kim ,  Hyun Joo Bae

IPC分类号： G10L19/02

CPC分类号： G10L19/0212 ,  G10L19/0017 ,  G10L19/032 ,  G10L19/24

摘要： An encoding method of an encoder is provided. The encoder generates first MDCT coefficients by transforming an input signal, and generates MDCT indices by quantizing the first MDCT coefficients. The encoder generates second MDCT coefficients by dequantizing the MDCT indices, and calculates MDCT residual coefficients using differences between the first MDCT coefficients and the second MDCT coefficients. The encoder generates a residual index by encoding the MDCT residual coefficients, and generates gain indices corresponding to gains from the first MDCT coefficients and the second MDCT coefficients.

摘要翻译： 提供了一种编码器的编码方法。 编码器通过变换输入信号来生成第一MDCT系数，并通过量化第一MDCT系数来生成MDCT索引。 编码器通过对MDCT索引进行去量化生成第二MDCT系数，并且使用第一MDCT系数和第二MDCT系数之间的差异来计算MDCT残差系数。 编码器通过对MDCT残差系数进行编码来生成残余索引，并且生成与来自第一MDCT系数和第二MDCT系数的增益对应的增益指数。

公开(公告)号：US09424857B2

公开(公告)日：2016-08-23

申请号：US13638364

申请日：2011-03-31

申请人： Jongmo Sung ,  Hyun Woo Kim ,  Hyun Joo Bae

发明人： Jongmo Sung ,  Hyun Woo Kim ,  Hyun Joo Bae

IPC分类号： G10L19/02 ,  G10L19/00 ,  G10L19/24 ,  G10L19/032

CPC分类号： G10L19/0212 ,  G10L19/0017 ,  G10L19/032 ,  G10L19/24

摘要： An encoding method of an encoder is provided. The encoder generates first MDCT coefficients by transforming an input signal, and generates MDCT indices by quantizing the first MDCT coefficients. The encoder generates second MDCT coefficients by dequantizing the MDCT indices, and calculates MDCT residual coefficients using differences between the first MDCT coefficients and the second MDCT coefficients. The encoder generates a residual index by encoding the MDCT residual coefficients, and generates gain indices corresponding to gains from the first MDCT coefficients and the second MDCT coefficients.

摘要翻译： 提供了一种编码器的编码方法。 编码器通过变换输入信号来生成第一MDCT系数，并通过量化第一MDCT系数来生成MDCT索引。 编码器通过对MDCT索引进行去量化生成第二MDCT系数，并且使用第一MDCT系数和第二MDCT系数之间的差异来计算MDCT残差系数。 编码器通过对MDCT残差系数进行编码来生成残余索引，并且生成与来自第一MDCT系数和第二MDCT系数的增益对应的增益指数。