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1.发明授权公开(公告)号：US08543392B2
公开(公告)日：2013-09-24
申请号：US12528869
申请日：2008-02-29
IPC分类号： G10L19/00
CPC分类号： G10L19/00 , G10L19/005 , G10L19/0204 , G10L19/0208 , G10L19/0212 , G10L19/24
摘要： Disclosed is an encoding device which can accurately specify a band having a large error among all the bands by using a small calculation amount. A first position identifier uses a first layer error conversion coefficient indicating an error of a decoding signal for an input signal so as to search for a band having a large error in a relatively wide bandwidth in all the bands of the input signal and generates first position information indicating the identified band. A second position identifier searches for a target frequency band having a large error in a relatively narrow bandwidth in the band identified by the first position identifier and generates second position information indicating the identified target frequency band. An encoder encodes a first layer decoding error conversion coefficient contained in the target frequency band.
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2.发明申请SPECTRAL SMOOTHING DEVICE, ENCODING DEVICE, DECODING DEVICE, COMMUNICATION TERMINAL DEVICE, BASE STATION DEVICE, AND SPECTRAL SMOOTHING METHOD 有权光谱平滑装置，编码装置，解码装置，通信终端装置，基站装置和光谱平滑方法公开(公告)号：US20110137643A1
公开(公告)日：2011-06-09
申请号：US13057454
申请日：2009-08-07
IPC分类号： G10L19/02
CPC分类号： G10L19/0204 , G10L19/0212 , G10L19/032 , G10L19/24 , G10L21/02
摘要： Disclosed is a spectral smoothing device with a structure whereby smoothing is performed after a nonlinear conversion has been performed for a spectrum calculated from an audio signal, and with which the amount of processing calculation is significantly reduced while maintaining excellent audio quality. With this spectral smoothing device, a sub band division unit (102) divides an input spectrum into multiple sub bands; a representative value calculation unit (103) calculates a representative value for each sub band using an arithmetic mean and a geometric mean; with respect to each representative value, a nonlinear conversion unit (104) performs a nonlinear conversion the characteristic of which is further emphasized as the value increases; and a smoothing unit (105) that smoothes the representative value which has undergone the nonlinear conversion for each sub band, at the frequency domain.
摘要翻译： 公开了一种光谱平滑装置，其具有在对从音频信号计算出的频谱进行非线性转换之后进行平滑处理，并且在保持优良音频质量的同时显着减少处理计算量的结构。 利用该频谱平滑装置，子带分割单元（102）将输入频谱划分成多个子频带; 代表值计算单元（103）使用算术平均值和几何平均值计算每个子带的代表值; 对于每个代表值，非线性转换单元（104）执行非线性转换，其特性随着值的增加被进一步强调; 以及平滑化单元（105），其以频域对每个子带进行了非线性转换的代表值进行平滑化。
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公开(公告)号：US20100106496A1
公开(公告)日：2010-04-29
申请号：US12528877
申请日：2008-02-29
IPC分类号： G10L19/00
CPC分类号： G10L19/032 , G10L19/0212 , G10L19/10
摘要： Provided is an encoding device which can reduce the encoding distortion as compared to the conventional technique and can obtain a preferable sound quality for auditory sense. In the encoding device, a shape quantization unit (111) quantizes the shape of an input spectrum with a small number of pulse positions and polarities. The shape quantization unit (111) sets a pulse amplitude width to be searched later upon search of the pulse position to a value not greater than the pulse amplitude width which has been searched previously. A gain quantization unit (112) calculates a gain of a pulse searched by the shape quantization unit (111) for each of bands.
摘要翻译： 提供了一种与传统技术相比可以减少编码失真并且可以获得用于听觉的优选声音质量的编码装置。 在编码装置中，形状量化单元（111）以少量的脉冲位置和极性量化输入频谱的形状。 形状量化单元（111）将脉冲位置搜索后的脉冲幅度宽度设定为以前已经搜索到的脉冲幅度宽度以下的值。 增益量化单元（112）针对每个频带计算由形状量化单元（111）搜索的脉冲的增益。
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公开(公告)号：US20100057446A1
公开(公告)日：2010-03-04
申请号：US12529219
申请日：2008-02-29
CPC分类号： G10L19/038 , G10L19/10 , G10L25/18
摘要： Provided is an encoding device which can obtain a sound quality preferable for auditory sense even if the number of information bits is small. The encoding device includes a shape quantization unit (111) having: a section search unit (121) which searches for a pulse for each of bands into which a predetermined search section is divided; and a whole search unit (122) which performs search for a pulse over the entire search section. The shape of an input spectrum is quantized by a small number of pulse positions and polarities. A gain quantization unit (112) calculates a gain of the pulse searched by the shape quantization unit (111) and quantizes the gain for each of the bands.
摘要翻译： 提供一种编码装置，即使信息比特数较少，也可以获得听觉优先的声音质量。 编码装置包括形状量化单元（111），具有：搜索单元（121），搜索预定搜索区被分割成的每个频带的脉冲; 以及整个搜索单元（122），其执行搜索整个搜索部分的脉冲。 输入频谱的形状由少量的脉冲位置和极性量化。 增益量化单元（112）计算由形状量化单元（111）搜索的脉冲的增益，并对每个频带的增益进行量化。
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公开(公告)号：US20100017204A1
公开(公告)日：2010-01-21
申请号：US12528659
申请日：2008-02-29
IPC分类号： G10L19/12
CPC分类号： G10L19/00 , G10L19/005 , G10L19/02 , G10L19/0208 , G10L19/038 , G10L19/083 , G10L19/24 , G10L25/18
摘要： Provided is a voice encoding device which can accurately encode a spectrum shape of a signal having a strong tonality such as a vowel. The device includes: a sub-band constituting unit (151) which divides a first layer error conversion coefficient to be encoded into M sub-bands so as to generate M sub-band conversion coefficients; a shape vector encoding unit (152) which performs encoding on each of the M sub-band conversion coefficient so as to obtain M shape encoded information and calculates a target gain of each of the M sub-band conversion coefficients; a gain vector forming unit (153) which forms one gain vector by using M target gains; a gain vector encoding unit (154) which encodes the gain vector so as to obtain gain encoded information; and a multiplexing section unit (155) which multiplexes the shape encoded information with the gain encoded information.
摘要翻译： 提供了一种语音编码装置，其可以精确地编码具有强音调的信号的频谱形状，例如元音。 该装置包括：子带构成单元，将要编码的第一层错误转换系数划分为M个子带，以产生M个子带转换系数; 形状矢量编码单元，对M个子带转换系数中的每一个进行编码，以获得M个编码信息，并计算M个子带转换系数中的每一个的目标增益; 通过使用M个目标增益形成一个增益矢量的增益矢量形成单元（153） 增益矢量编码单元，其对所述增益矢量进行编码，以获得增益编码信息; 以及将形状编码信息与增益编码信息进行复用的多路复用单元（155）。
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公开(公告)号：US20100017200A1
公开(公告)日：2010-01-21
申请号：US12528869
申请日：2008-02-29
CPC分类号： G10L19/00 , G10L19/005 , G10L19/0204 , G10L19/0208 , G10L19/0212 , G10L19/24
摘要： Disclosed is an encoding device which can accurately specify a band having a large error among all the bands by using a small calculation amount. The device includes: a first position identification unit (201) which uses a first layer error conversion coefficient indicating an error of decoding signal for an input signal so as to search for a band having a large error in a relatively wide bandwidth in all the bands of the input signal and generates first position information indicating the identified band; a second position identification unit (202) which searches for a target frequency band having a large error in a relatively narrow bandwidth in the band identified by the first position identification unit (201) and generates second position information indicating the identified target frequency band; and an encoding unit (203) which encodes a first layer decoding error conversion coefficient contained in the target frequency band. The first position information, the second position information, and the encoding unit are transmitted to a communication partner.
摘要翻译： 公开了一种编码装置，其可以通过使用小的计算量来精确地指定所有频带中的大误差的频带。 该装置包括：第一位置识别单元，其使用指示用于输入信号的解码信号的误差的第一层错误转换系数，以便在所有频带中搜索相对较宽带宽中具有较大误差的频带 并产生指示所识别的频带的第一位置信息; 第二位置识别单元，其在由所述第一位置识别单元识别的所述频带中搜索具有相对较窄带宽的大误差的目标频带，并产生指示所识别的目标频带的第二位置信息; 以及对包含在目标频带中的第一层解码错误转换系数进行编码的编码单元（203）。 第一位置信息，第二位置信息和编码单元被发送到通信伙伴。
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7.发明授权Coding device and coding method with high layer coding based on lower layer coding results 有权基于较低层编码结果的编码设备和具有高层编码的编码方法公开(公告)号：US08306827B2
公开(公告)日：2012-11-06
申请号：US12282287
申请日：2007-03-08
IPC分类号： G10L19/12
CPC分类号： G10L19/24
摘要： A coding device is provided with features in which optimum coding in a higher layer is flexibly carried out based on a coding result of a lower layer and a quality audio signal in limited circumstances is served to users. In this coding device, a basic layer coding unit codes an input signal to generate a basic layer information source code and outputs a linear prediction coefficient (LPC) and a quantum LPC, which are parameters calculated at coding, to an expanded layer control unit. A basic layer decoding unit decodes the basic layer information source code. An adding unit reverses a polarity of a basic layer decoded signal, adds the same to the input signal, and calculates a difference signal. The expanded layer control unit generates expanded layer mode information indicative of a coding mode in an expanded layer based on the LPC and the quantum LPC. An expanded layer coding unit codes the difference signal obtained from the adding unit under control of the expanded layer control unit.
摘要翻译： 编码装置具有这样的特征，其中基于较低层的编码结果灵活地执行较高层中的最佳编码，并且在有限的情况下向用户提供质量音频信号。 在该编码装置中，基本层编码单元对输入信号进行编码以生成基本层信息源代码，并将作为编码计算出的参数的线性预测系数（LPC）和量子LPC输出到扩展层控制单元。 基本层解码单元解码基本层信息源代码。 加法单元反转基本层解码信号的极性，将其相加于输入信号，并计算差分信号。 扩展层控制单元基于LPC和量子LPC生成表示扩展层中的编码模式的扩展层模式信息。 扩展层编码单元在扩展层控制单元的控制下对从加法单元获得的差分信号进行编码。
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公开(公告)号：US20090094024A1
公开(公告)日：2009-04-09
申请号：US12282287
申请日：2007-03-08
CPC分类号： G10L19/24
摘要： A coding device is provided with features in which optimum coding in a higher layer is flexibly carried out based on a coding result of a lower layer and a quality audio signal in limited circumstances is served to users. In this coding device, a basic layer coding unit codes an input signal to generate a basic layer information source code and outputs a linear prediction coefficient (LPC) and a quantum LPC, which are parameters calculated at coding, to an expanded layer control unit. A basic layer decoding unit decodes the basic layer information source code. An adding unit reverses a polarity of a basic layer decoded signal, adds the same to the input signal, and calculates a difference signal. The expanded layer control unit generates expanded layer mode information indicative of a coding mode in an expanded layer based on the LPC and the quantum LPC. An expanded layer coding unit codes the difference signal obtained from the adding unit under control of the expanded layer control unit.
摘要翻译： 编码装置具有这样的特征，其中基于较低层的编码结果灵活地执行较高层中的最佳编码，并且在有限的情况下向用户提供质量音频信号。 在该编码装置中，基本层编码单元对输入信号进行编码以生成基本层信息源代码，并将作为编码计算出的参数的线性预测系数（LPC）和量子LPC输出到扩展层控制单元。 基本层解码单元解码基本层信息源代码。 加法单元反转基本层解码信号的极性，将其相加于输入信号，并计算差分信号。 扩展层控制单元基于LPC和量子LPC生成表示扩展层中的编码模式的扩展层模式信息。 扩展层编码单元在扩展层控制单元的控制下对从加法单元获得的差异信号进行编码。
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9.发明授权Spectral smoothing device, encoding device, decoding device, communication terminal device, base station device, and spectral smoothing method 有权光谱平滑装置，编码装置，解码装置，通信终端装置，基站装置和光谱平滑方法公开(公告)号：US08731909B2
公开(公告)日：2014-05-20
申请号：US13057454
申请日：2009-08-07
CPC分类号： G10L19/0204 , G10L19/0212 , G10L19/032 , G10L19/24 , G10L21/02
摘要： Disclosed is a spectral smoothing device with a structure whereby smoothing is performed after a nonlinear conversion has been performed for a spectrum calculated from an audio signal, and with which the amount of processing calculation is significantly reduced while maintaining excellent audio quality. With this spectral smoothing device, a sub band division unit (102) divides an input spectrum into multiple sub bands; a representative value calculation unit (103) calculates a representative value for each sub band using an arithmetic mean and a geometric mean; with respect to each representative value, a nonlinear conversion unit (104) performs a nonlinear conversion the characteristic of which is further emphasized as the value increases; and a smoothing unit (105) that smoothes the representative value which has undergone the nonlinear conversion for each sub band, at the frequency domain.
摘要翻译： 公开了一种光谱平滑装置，其具有在对从音频信号计算出的频谱进行非线性转换之后进行平滑处理，并且在保持优良音频质量的同时显着减少处理计算量的结构。 利用该频谱平滑装置，子带分割单元（102）将输入频谱划分成多个子频带; 代表值计算单元（103）使用算术平均值和几何平均值计算每个子带的代表值; 对于每个代表值，非线性转换单元（104）执行非线性转换，其特性随着值的增加被进一步强调; 以及平滑化单元（105），其以频域对每个子带进行了非线性转换的代表值进行平滑化。
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10.发明授权公开(公告)号：US08554549B2
公开(公告)日：2013-10-08
申请号：US12528659
申请日：2008-02-29
IPC分类号： G10L19/12
CPC分类号： G10L19/00 , G10L19/005 , G10L19/02 , G10L19/0208 , G10L19/038 , G10L19/083 , G10L19/24 , G10L25/18
摘要： A voice encoding device accurately encodes a spectrum shape of a signal having a strong tonality such as a vowel. The device includes: a sub-band divider which divides a first layer error conversion coefficient to be encoded into M sub-bands so as to generate M sub-band conversion coefficients; a shape vector encoder which performs encoding on each of the M sub-band conversion coefficients so as to obtain M shape encoded information and calculates a target gain of each of the M sub-band conversion coefficients; a gain vector former which forms one gain vector by using M target gains; a gain vector encoder which encodes the gain vector so as to obtain gain encoded information; and a multiplexer which multiplexes the shape encoded information with the gain encoded information.
摘要翻译： 语音编码装置对具有强音调的信号（例如元音）的频谱形状进行精确编码。 该装置包括：子带分割器，将要编码的第一层错误转换系数分成M个子带，以产生M个子带转换系数; 形状矢量编码器，对M个子带变换系数中的每一个进行编码，以获得M个形状的编码信息，并计算M个子带转换系数中的每一个的目标增益; 通过使用M个目标增益形成一个增益矢量的增益矢量前者; 增益矢量编码器，其对所述增益矢量进行编码，以获得增益编码信息; 以及多路复用器，其将形状编码信息与增益编码信息进行复用。
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