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1. 发明授权

US09142222B2 Apparatus and method of enhancing quality of speech codec 有权
标题翻译：提高语音编解码质量的装置和方法
公开(公告)号：US09142222B2
公开(公告)日：2015-09-22
申请号：US13613792
申请日：2012-09-13
申请人： Mi-Suk Lee , Do-Young Kim , Byung-Sun Lee
发明人： Mi-Suk Lee , Do-Young Kim , Byung-Sun Lee
IPC分类号： G10L21/00 , G10L21/0208 , G10L19/24 , G10L21/0316 , G11B20/10 , H03G3/34 , G10L21/038
CPC分类号： G10L21/0208 , G10L19/24 , G10L21/0316 , G10L21/038 , G11B20/10527 , G11B2020/10555 , H03G3/341
摘要： An apparatus and method of improving the quality of a speech codec are provided. In the method, a first energy of a signal decoded by a low-band codec is calculated, and a second energy of a signal decoded by a low-band enhancement mode is calculated. Then, when the first energy is less than a first threshold value or less than a product of the second energy and a second threshold value, a size of the decoded signal is scaled. Accordingly, generation of a quantization error with respect to a silence segment is reduced.
摘要翻译：提供了一种提高语音编解码器质量的装置和方法。在该方法中，计算由低频带编解码器解码的信号的第一能量，并且计算通过低频带增强模式解码的信号的第二能量。然后，当第一能量小于第一阈值或小于第二能量与第二阈值的乘积时，解码信号的大小被缩放。因此，减少相对于静音段的量化误差的产生。

2. 发明授权

US09135926B2 Apparatus and method of enhancing quality of speech codec 有权
公开(公告)号：US09135926B2
公开(公告)日：2015-09-15
申请号：US13613742
申请日：2012-09-13
申请人： Mi-Suk Lee , Do-Young Kim , Byung-Sun Lee
发明人： Mi-Suk Lee , Do-Young Kim , Byung-Sun Lee
IPC分类号： G10L21/00 , G10L21/0208 , G10L19/24 , G10L21/0316 , G11B20/10 , H03G3/34 , G10L21/038
CPC分类号： G10L21/0208 , G10L19/24 , G10L21/0316 , G10L21/038 , G11B20/10527 , G11B2020/10555 , H03G3/341
摘要： An apparatus and method of improving the quality of a speech codec are provided. In the method, a first energy of a signal decoded by a low-band codec is calculated, and a second energy of a signal decoded by a low-band enhancement mode is calculated. Then, when the first energy is less than a first threshold value or less than a product of the second energy and a second threshold value, a size of the decoded signal is scaled. Accordingly, generation of a quantization error with respect to a silence segment is reduced.

3. 发明授权

US09135925B2 Apparatus and method of enhancing quality of speech codec 有权
标题翻译：提高语音编解码质量的装置和方法
公开(公告)号：US09135925B2
公开(公告)日：2015-09-15
申请号：US12529239
申请日：2008-11-28
申请人： Mi-Suk Lee , Do-Young Kim , Byung-Sun Lee
发明人： Mi-Suk Lee , Do-Young Kim , Byung-Sun Lee
IPC分类号： G10L21/00 , G10L21/0208 , G10L19/24 , G10L21/0316 , G11B20/10 , H03G3/34 , G10L21/038
CPC分类号： G10L21/0208 , G10L19/24 , G10L21/0316 , G10L21/038 , G11B20/10527 , G11B2020/10555 , H03G3/341
摘要： An apparatus and method of improving the quality of a speech codec are provided. In the method, a first energy of a signal decoded by a core codec is calculated, and a second energy of a signal decoded by a low-band enhancement mode is calculated. Then, when the first energy is less than a first threshold value or less than a product of the second energy and a second threshold value, a size of the decoded signal is scaled. Accordingly, generation of a quantization error with respect to a silence segment is reduced.
摘要翻译：提供了一种提高语音编解码器质量的装置和方法。在该方法中，计算由核心编解码器解码的信号的第一能量，并且计算通过低频带增强模式解码的信号的第二能量。然后，当第一能量小于第一阈值或小于第二能量与第二阈值的乘积时，解码信号的大小被缩放。因此，减少相对于静音段的量化误差的产生。

4. 发明申请

US20100057449A1 APPARATUS AND METHOD OF ENHANCING QUALITY OF SPEECH CODEC 有权
标题翻译：提高语音编解码质量的装置和方法
公开(公告)号：US20100057449A1
公开(公告)日：2010-03-04
申请号：US12529239
申请日：2008-11-28
申请人： Mi-Suk Lee , Do-Young Kim , Byung-Sun Lee
发明人： Mi-Suk Lee , Do-Young Kim , Byung-Sun Lee
IPC分类号： G10L19/00
CPC分类号： G10L21/0208 , G10L19/24 , G10L21/0316 , G10L21/038 , G11B20/10527 , G11B2020/10555 , H03G3/341
摘要： An apparatus and method of improving the quality of a speech codec are provided. In the method, a first energy of a signal decoded by a core codec is calculated, and a second energy of a signal decoded by a low-band enhancement mode is calculated. Then, when the first energy is less than a first threshold value or less than a product of the second energy and a second threshold value, a size of the decoded signal is scaled. Accordingly, generation of a quantization error with respect to a silence segment is reduced.
摘要翻译：提供了一种提高语音编解码器质量的装置和方法。在该方法中，计算由核心编解码器解码的信号的第一能量，并且计算通过低频带增强模式解码的信号的第二能量。然后，当第一能量小于第一阈值或小于第二能量与第二阈值的乘积时，解码信号的大小被缩放。因此，减少相对于静音段的量化误差的产生。

5. 发明授权

US08265929B2 Embedded code-excited linear prediction speech coding and decoding apparatus and method 有权
标题翻译：嵌入式码激励线性预测语音编解码装置及方法
公开(公告)号：US08265929B2
公开(公告)日：2012-09-11
申请号：US11297686
申请日：2005-12-07
申请人： Mi-Suk Lee , Do-Young Kim , JongMo Sung , Hyun-Woo Kim
发明人： Mi-Suk Lee , Do-Young Kim , JongMo Sung , Hyun-Woo Kim
IPC分类号： G10L19/02
CPC分类号： G10L19/24 , G10L19/083 , G10L19/10
摘要： Provides is an embedded code-excited linear prediction speech coding/decoding apparatus and method that can deal with the capacity change of speech transmission channel by modeling an error signal not coded at a core speech coder based on a transmission rate in a multiple pulse search mode or gain compensation mode and then transmitting it in an optimum mode. The apparatus includes a core speech coding unit for coding an input speech signal with spectral envelop and an excitation signal, a transmission rate determination unit for allocating the number of bits additionally allowed depending on a capacity of a transmission channel, and an embedded excitation signal coding unit for coding a residual excitation signal that is not coded in the core speech coding unit based on the number of additionally allowed bits using one of a multiple pulse excitation coding mode and a gain compensation mode.
摘要翻译：提供一种嵌入式码激励线性预测语音编码/解码装置和方法，可以通过对基于多脉冲搜索模式中的传输速率的核心语音编码器对未编码的误差信号进行建模来处理语音传输信道的容量变化或增益补偿模式，然后以最佳模式发送。该装置包括：核心语音编码单元，用于对具有频谱包络和激励信号的输入语音信号进行编码;传输速率确定单元，用于根据传输信道的容量分配额外容许的比特数;以及嵌入式激励信号编码用于使用多脉冲激励编码模式和增益补偿模式中的一种，基于使用附加允许位的数量来编码不在核心语音编码单元中编码的残余激励信号的单元。

6. 发明授权

US07599833B2 Apparatus and method for coding residual signals of audio signals into a frequency domain and apparatus and method for decoding the same 有权
标题翻译：将音频信号的残余信号编码成频域的装置和方法以及用于对其解码的装置和方法
公开(公告)号：US07599833B2
公开(公告)日：2009-10-06
申请号：US11441955
申请日：2006-05-26
申请人： Jong-Mo Sung , Hyun-Woo Kim , Mi-Suk Lee , Do-Young Kim
发明人： Jong-Mo Sung , Hyun-Woo Kim , Mi-Suk Lee , Do-Young Kim
IPC分类号： G10L19/00 , G10L19/12
CPC分类号： G10L21/038 , G10L19/0212 , G10L19/035 , G10L19/06 , G10L19/24
摘要： Provided is a residual signal coding/decoding apparatus and method. The residual signal coding apparatus includes a transformer, an LPC coefficient extractor, an LPC coefficient quantizer, an LP analysis filter, a band splitter, a pulse searcher, and a pulse quantizer. The transformer transforms time-domain residual signals into a frequency domain to output transform coefficients. The LPC coefficient extractor extracts LPC coefficients from the transform coefficients. The LPC coefficient quantizer quantizes the LPC coefficients to output quantized LPC coefficients and corresponding indices. The LP analysis filter performs an LP analysis on the transform coefficients to output LP residual transform coefficients. The band splitter splits the LP residual transform coefficients into bands to output the LP residual transform coefficients. The pulse searcher searches the LP residual transform coefficients for the respective bands to select optimal pulses and output parameters of the optimal pulses. The pulse quantizer quantizes the parameters of the optimal pulses.
摘要翻译：提供了一种残留信号编码/解码装置和方法。残余信号编码装置包括变压器，LPC系数提取器，LPC系数量化器，LP分析滤波器，带分离器，脉冲搜索器和脉冲量化器。变压器将时域残差信号变换为频域，输出变换系数。 LPC系数提取器从变换系数中提取LPC系数。 LPC系数量化器量化LPC系数以输出量化的LPC系数和相应的索引。 LP分析滤波器对变换系数执行LP分析以输出LP残差变换系数。频带分离器将LP残差变换系数分解成频带以输出LP残差变换系数。脉冲搜索器搜索各个频带的LP残差变换系数，以选择最佳脉冲和最佳脉冲的输出参数。脉冲量化器对最佳脉冲的参数进行量化。

7. 发明申请

US20060277040A1 Apparatus and method for coding and decoding residual signal 有权
标题翻译：剩余信号编码和解码的装置和方法
公开(公告)号：US20060277040A1
公开(公告)日：2006-12-07
申请号：US11441955
申请日：2006-05-26
申请人： Jong-Mo Sung , Hyun-Woo Kim , Mi-Suk Lee , Do-Young Kim
发明人： Jong-Mo Sung , Hyun-Woo Kim , Mi-Suk Lee , Do-Young Kim
IPC分类号： G10L19/00
CPC分类号： G10L21/038 , G10L19/0212 , G10L19/035 , G10L19/06 , G10L19/24
摘要： Provided is a residual signal coding/decoding apparatus and method. The residual signal coding apparatus includes a transformer, an LPC coefficient extractor, an LPC coefficient quantizer, an LP analysis filter, a band splitter, a pulse searcher, and a pulse quantizer. The transformer transforms time-domain residual signals into a frequency domain to output transform coefficients. The LPC coefficient extractor extracts LPC coefficients from the transform coefficients. The LPC coefficient quantizer quantizes the LPC coefficients to output quantized LPC coefficients and corresponding indices. The LP analysis filter performs an LP analysis on the transform coefficients to output LP residual transform coefficients. The band splitter splits the LP residual transform coefficients into bands to output the LP residual transform coefficients. The pulse searcher searches the LP residual transform coefficients for the respective bands to select optimal pulses and output parameters of the optimal pulses. The pulse quantizer quantizes the parameters of the optimal pulses.
摘要翻译：提供了一种残留信号编码/解码装置和方法。残余信号编码装置包括变压器，LPC系数提取器，LPC系数量化器，LP分析滤波器，带分离器，脉冲搜索器和脉冲量化器。变压器将时域残差信号变换为频域，输出变换系数。 LPC系数提取器从变换系数中提取LPC系数。 LPC系数量化器量化LPC系数以输出量化的LPC系数和相应的索引。 LP分析滤波器对变换系数执行LP分析以输出LP残差变换系数。频带分离器将LP残差变换系数分解成频带以输出LP残差变换系数。脉冲搜索器搜索各个频带的LP残差变换系数，以选择最佳脉冲和最佳脉冲的输出参数。脉冲量化器对最佳脉冲的参数进行量化。

8. 发明申请

US20050108009A1 Apparatus for coding of variable bitrate wideband speech and audio signals, and a method thereof 有权
标题翻译：用于编码可变比特率宽带语音和音频信号的装置及其方法
公开(公告)号：US20050108009A1
公开(公告)日：2005-05-19
申请号：US10967045
申请日：2004-10-14
申请人： Mi-Suk Lee , Do-Young Kim , Hong-Kook Kim , Seungho Choi
发明人： Mi-Suk Lee , Do-Young Kim , Hong-Kook Kim , Seungho Choi
IPC分类号： G10L19/00 , G10L19/14 , G10L19/02
CPC分类号： G10L19/24
摘要： Disclosed is an apparatus for coding of variable bitrate wideband speech and audio, comprising: a) a speech and audio divider for dividing signals inputted to a CODEC into speech or audio signals; b) a narrowband coder for performing narrowband coding, in the case the divided input signals are speech signals; c) a bitrate modifier for modifying a bitrate for coding of a low frequency band and a bitrate for coding of a high frequency band, in the case the divided input signals are audio signals; and d) a wideband coder for performing coding by the modified bitrate in the bitrate modifier.
摘要翻译：公开了一种用于编码可变比特率宽带语音和音频的装置，包括：a）语音和音频分频器，用于将输入到CODEC的信号分成语音或音频信号; b）用于执行窄带编码的窄带编码器，在分割的输入信号是语音信号的情况下; c）用于修改用于编码低频带的比特率和用于编码高频带的比特率的比特率修改器，在分割的输入信号是音频信号的情况下; 以及d）宽带编码器，用于通过比特率修改器中的修改的比特率执行编码。

9. 发明申请

US20060122830A1 Embedded code-excited linerar prediction speech coding and decoding apparatus and method 有权
标题翻译：嵌入式码激励线性预测语音编解码装置及方法
公开(公告)号：US20060122830A1
公开(公告)日：2006-06-08
申请号：US11297686
申请日：2005-12-07
申请人： Mi-Suk Lee , Do-Young Kim , JongMo Sung , Hyun-Woo Kim
发明人： Mi-Suk Lee , Do-Young Kim , JongMo Sung , Hyun-Woo Kim
IPC分类号： G10L19/02
CPC分类号： G10L19/24 , G10L19/083 , G10L19/10
摘要： Provides is an embedded code-excited linear prediction speech coding/decoding apparatus and method that can deal with the capacity change of speech transmission channel by modeling an error signal not coded at a core speech coder based on a transmission rate in a multiple pulse search mode- or gain compensation mode and then transmitting it in an optimum mode. The apparatus includes a core speech coding unit for coding an input speech signal with spectral envelop and an excitation signal, a transmission rate determination unit for allocating the number of bits additionally allowed depending on a capacity of a transmission channel, and an embedded excitation signal coding unit for coding a residual excitation signal that is not coded in the core speech coding unit based on the number of additionally allowed bits using one of a multiple pulse excitation coding mode and a gain compensation mode.
摘要翻译：提供一种嵌入式码激励线性预测语音编码/解码装置和方法，可以通过对基于多脉冲搜索模式中的传输速率的核心语音编码器对未编码的误差信号进行建模来处理语音传输信道的容量变化 - 或增益补偿模式，然后以最佳模式发送。该装置包括：核心语音编码单元，用于对具有频谱包络和激励信号的输入语音信号进行编码;传输速率确定单元，用于根据传输信道的容量分配额外容许的比特数;以及嵌入式激励信号编码用于使用多脉冲激励编码模式和增益补偿模式中的一种，基于使用附加允许位的数量来编码不在核心语音编码单元中编码的残余激励信号的单元。

10. 发明申请

US20100153119A1 APPARATUS AND METHOD FOR CODING AUDIO DATA BASED ON INPUT SIGNAL DISTRIBUTION CHARACTERISTICS OF EACH CHANNEL 有权
标题翻译：基于每个通道的输入信号分配特性编码音频数据的装置和方法
公开(公告)号：US20100153119A1
公开(公告)日：2010-06-17
申请号：US12518263
申请日：2007-12-07
申请人： Mi-Suk Lee , Do-Young Kim , Hae-Won Jung
发明人： Mi-Suk Lee , Do-Young Kim , Hae-Won Jung
IPC分类号： G10L19/00
CPC分类号： G10L19/008
摘要： Provided is an audio coding apparatus and method that can selectively apply a operation mode of a coding module for stereo or multi-channel representation according to input signal characteristics of each channel, when voice or music signals are transmitted using an audio codec in portable terminals capable of stereo or multi-channel input and output. The audio coding apparatus includes a down-mixer for down-mixing multi-channel audio signals into mono signals; a coder for coding the mono signals; an input channel correlation analyzer for deciding whether to give them stereo effect based on their signal distribution characteristics, and outputting a control signal indicating whether to perform stereo representation process; and a stereo representation unit for performing stereo representation process onto the multi-channel audio signals when the control signal indicating to perform stereo representation process.
摘要翻译：提供了一种音频编码装置和方法，当使用便携式终端的音频编解码器传输语音或音乐信号时，可以根据每个信道的输入信号特性选择性地应用用于立体声或多声道表示的编码模块的操作模式的立体声或多声道输入和输出。音频编码装置包括用于将多声道音频信号降混为单声道信号的下混频器; 用于对单声道信号进行编码的编码器; 输入信道相关分析器，用于基于它们的信号分布特性决定是否给出立体声效果，并输出指示是否执行立体声表示处理的控制信号; 以及立体声表示单元，用于当指示执行立体声表示处理的控制信号时，对多声道音频信号执行立体声表示处理。

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