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1. 发明授权

US07983904B2 Scalable decoding apparatus and scalable encoding apparatus 有权
标题翻译：可扩展解码装置和可扩展编码装置
公开(公告)号：US07983904B2
公开(公告)日：2011-07-19
申请号：US11718437
申请日：2005-11-02
申请人： Hiroyuki Ehara , Masahiro Oshikiri , Koji Yoshida
发明人： Hiroyuki Ehara , Masahiro Oshikiri , Koji Yoshida
IPC分类号： G10L19/14
CPC分类号： G10L21/038 , G10L19/24
摘要： A scalable decoding apparatus capable of providing decoded audio signals of high quality having less degradation of a high frequency spectrum even when decoding audio signals by generating the high frequency spectrum by use of a low frequency spectrum. In the apparatus, an amplitude adjusting part uses different adjustment coefficients in accordance with the characteristic of first layer spectrum information to adjust the amplitude of a first layer decoded signal spectrum, and then outputs the amplitude-adjusted first layer decoded signal spectrum to a pseudo-spectrum generating part. Using amplitude-adjusted first layer decoded signal spectrum received from the amplitude adjusting part, the pseudo-spectrum generating part generates and outputs a pseudo-spectrum of high frequencies to a scaling part. The scaling part scales the spectrum received from the pseudo-spectrum generating part and then outputs it to an adder.
摘要翻译：即使在通过使用低频谱生成高频谱来解码音频信号的同时，也能够提供具有较低的高频谱劣化的高质量解码音频信号的可扩展解码装置。在该装置中，振幅调整部根据第一层频谱信息的特性，使用不同的调整系数来调整第一层解码信号频谱的振幅，然后将调幅后的第一层解码信号频谱输出到伪 - 频谱产生部分。使用从振幅调整部接收到的经调幅的第一层解码信号频谱，伪频谱生成部生成并输出高频的伪频谱到缩放部。缩放部分缩放从伪频谱生成部分接收到的频谱，然后将其输出到加法器。

2. 发明授权

US07904292B2 Scalable encoding device, scalable decoding device, and method thereof 有权
标题翻译：可扩展编码装置，可扩展解码装置及其方法
公开(公告)号：US07904292B2
公开(公告)日：2011-03-08
申请号：US11576264
申请日：2005-09-28
申请人： Michiyo Goto , Koji Yoshida , Hiroyuki Ehara , Masahiro Oshikiri
发明人： Michiyo Goto , Koji Yoshida , Hiroyuki Ehara , Masahiro Oshikiri
IPC分类号： G10L19/12 , G10L19/00
CPC分类号： G10L19/008 , G10L19/24
摘要： A scalable encoding device for realizing scalable encoding by CELP encoding of a stereo sound signal and improving the encoding efficiency. In this device, an adder and a multiplier obtain an average of a first channel signal CH1 and a second channel signal CH2 as a monaural signal M. A CELP encoder for a monaural signal subjects the monaural signal M to CELP encoding, outputs the obtained encoded parameter to outside, and outputs a synthesized monaural signal M′ synthesized by using the encoded parameter to a first channel signal encoder. By using the synthesized monaural signal M′ and the second channel signal CH2, the first channel signal encoder subjects the first channel signal CH1 to CELP encoding to minimize the sum of the encoding distortion of the first channel signal CH1 and the encoding distortion of the second channel signal CH2.
摘要翻译：一种可扩展编码装置，用于通过立体声信号的CELP编码实现可分级编码，并提高编码效率。在该装置中，加法器和乘法器获得第一信道信号CH1和第二信道信号CH2的平均值作为单声道信号M.用于单声道信号的CELP编码器对单声道信号M进行CELP编码，将获得的编码参数到外部，并且将通过使用编码参数合成的合成单声道信号M'输出到第一声道信号编码器。通过使用合成单声道信号M'和第二声道信号CH2，第一声道信号编码器使第一声道信号CH1至CELP编码器使第一声道信号CH1的编码失真和第二声道信号CH1的编码失真之和最小化通道信号CH2。

3. 发明申请

US20080255833A1 Scalable Encoding Device, Scalable Decoding Device, and Method Thereof 有权
标题翻译：可扩展编码设备，可扩展解码设备及其方法
公开(公告)号：US20080255833A1
公开(公告)日：2008-10-16
申请号：US11576264
申请日：2005-09-28
申请人： Michiyo Goto , Koji Yoshida , Hiroyuki Ehara , Masahiro Oshikiri
发明人： Michiyo Goto , Koji Yoshida , Hiroyuki Ehara , Masahiro Oshikiri
IPC分类号： G10L19/12
CPC分类号： G10L19/008 , G10L19/24
摘要： A scalable encoding device for realizing scalable encoding by CELP encoding of a stereo sound signal and improving the encoding efficiency. In this device, an adder and a multiplier obtain an average of a first channel signal CH1 and a second channel signal CH2 as a monaural signal M. A CELP encoder for a monaural signal subjects the monaural signal M to CELP encoding, outputs the obtained encoded parameter to outside, and outputs a synthesized monaural signal M′ synthesized by using the encoded parameter to a first channel signal encoder. By using the synthesized monaural signal M′ and the second channel signal CH2, the first channel signal encoder subjects the first channel signal CH1 to CELP encoding to minimize the sum of the encoding distortion of the first channel signal CH1 and the encoding distortion of the second channel signal CH2.
摘要翻译：一种可扩展编码装置，用于通过立体声信号的CELP编码实现可分级编码，并提高编码效率。在该装置中，加法器和乘法器获得第一信道信号CH 1和第二信道CH 2的平均值作为单声道信号M.用于单声道信号的CELP编码器使单声道信号M进行CELP编码，获得编码参数到外部，并且将通过使用编码参数合成的合成单声道信号M'输出到第一声道信号编码器。通过使用合成单声道信号M'和第二声道信号CH 2，第一声道信号编码器对第一声道信号CH 1进行CELP编码，使第一声道信号CH 1的编码失真和编码失真的和最小化的第二信道信号CH 2。

4. 发明申请

US20080126082A1 Scalable Decoding Apparatus and Scalable Encoding Apparatus 有权
标题翻译：可扩展解码装置和可扩展编码装置
公开(公告)号：US20080126082A1
公开(公告)日：2008-05-29
申请号：US11718437
申请日：2005-11-02
申请人： Hiroyuki Ehara , Masahiro Oshikiri , Koji Yoshida
发明人： Hiroyuki Ehara , Masahiro Oshikiri , Koji Yoshida
IPC分类号： G10L19/00
CPC分类号： G10L21/038 , G10L19/24
摘要： A scalable decoding apparatus capable of providing decoded audio signals of high quality having less degradation of a high frequency spectrum even when decoding audio signals by generating the high frequency spectrum by use of a low frequency spectrum. In the apparatus, an amplitude adjusting part (1211) uses different adjustment coefficients in accordance with the characteristic of first layer spectrum information to adjust the amplitude of a first layer decoded signal spectrum, and then outputs the amplitude-adjusted first layer decoded signal spectrum to a pseudo-spectrum generating part (1012). Using amplitude-adjusted first layer decoded signal spectrum received from the amplitude adjusting part (1211), the pseudo-spectrum generating part (1012) generates and outputs a pseudo-spectrum of high frequencies to a scaling part (1013). The scaling part (1013) scales the spectrum received from the pseudo-spectrum generating part (1012) and then outputs it to an adder (B).
摘要翻译：即使在通过使用低频谱生成高频谱来解码音频信号的同时，也能够提供具有较低的高频谱劣化的高质量解码音频信号的可扩展解码装置。在该装置中，振幅调整部（1211）根据第一层频谱信息的特性使用不同的调整系数来调整第一层解码信号频谱的振幅，然后将经调幅的第一层解码信号频谱输出到伪频谱生成部（1012）。使用从振幅调整部（1211）接收到的经调幅的第一层解码信号频谱，伪频谱生成部（1012）生成并将高频的伪频谱输出到缩放部（1013）。缩放部分（1013）缩放从伪频谱生成部分（1012）接收的频谱，然后将其输出到加法器（B）。

5. 发明授权

US08204745B2 Encoder, decoder, encoding method, and decoding method 有权
标题翻译：编码器，解码器，编码方法和解码方法
公开(公告)号：US08204745B2
公开(公告)日：2012-06-19
申请号：US13158944
申请日：2011-06-13
申请人： Masahiro Oshikiri , Hiroyuki Ehara , Koji Yoshida
发明人： Masahiro Oshikiri , Hiroyuki Ehara , Koji Yoshida
IPC分类号： G10L19/02
CPC分类号： G10L21/038
摘要： An encoding apparatus and method for generating low-frequency-band encoding information and high-frequency-band encoding information from an original signal. The encoding apparatus includes a first spectrum calculator that calculates a first spectrum of a low frequency band from a decoded signal of the low-frequency-band encoding information, a second spectrum calculator that calculates a second spectrum from the original signal, an estimator that divides a high frequency band of the second spectrum into a plurality of bands and estimates the second spectrum included in each band, using the first spectrum, and a first error component encoder that encodes a first error component between the high frequency band of the second spectrum and an estimated spectrum. A corresponding decoding apparatus and method provides decoding.
摘要翻译：一种用于从原始信号产生低频带编码信息和高频带编码信息的编码装置和方法。编码装置包括：第一频谱计算器，根据低频带编码信息的解码信号计算低频带的第一频谱;第二频谱计算器，从原始信号计算第二频谱;估计器，其将将第二频谱的高频带转换成多个频带，并使用第一频谱估计包括在每个频带中的第二频谱，以及第一误差分量编码器，其对第二频谱的高频带和估计频谱。相应的解码装置和方法提供解码。

6. 发明授权

US08135583B2 Encoder, decoder, encoding method, and decoding method 有权
标题翻译：编码器，解码器，编码方法和解码方法
公开(公告)号：US08135583B2
公开(公告)日：2012-03-13
申请号：US12819690
申请日：2010-06-21
申请人： Masahiro Oshikiri , Hiroyuki Ehara , Koji Yoshida
发明人： Masahiro Oshikiri , Hiroyuki Ehara , Koji Yoshida
IPC分类号： G10L19/02
CPC分类号： G10L21/038
摘要： An encoder, decoder, encoding method, and decoding method enabling acquisition of high-quality decoded signal in scalable encoding of an original signal in first and second layers even if the second or upper layer section performs low bit-rate encoding. In the encoder, a spectrum residue shape codebook stores candidates of spectrum residue shape vectors, a spectrum residue gain codebook stores candidates of spectrum residue gains, and a spectrum residue shape vector and a spectrum residue gain are sequentially outputted from the candidates according to the instruction from a search section. A multiplier multiplies a candidate of the spectrum residue shape vector by a candidate of the spectrum residue gain and outputs the result to a filtering section. The filtering section performs filtering by using a pitch filter internal state set by a filter state setting section, a lag T outputted by a lag setting section, and a spectrum residue shape vector which has undergone gain adjustment.
摘要翻译：即使第二或上层部分执行低比特率编码，编码器，解码器，编码方法和解码方法能够在第一和第二层中的原始信号的可分级编码中获取高质量解码信号。在编码器中，频谱残差形状码本存储频谱残差形状向量的候选，频谱残差增益码本存储频谱残差增益的候选，频谱残差形状矢量和频谱残差增益从根据指令的候选顺序输出从搜索部分。乘法器将频谱残差形状矢量的候选乘以频谱残差增益的候选，并将结果输出到滤波部分。滤波部分通过使用由滤波器状态设置部分设置的音调滤波器内部状态，由滞后设置部分输出的延迟T和经过增益调整的频谱残差形状矢量进行滤波。

7. 发明授权

US07769584B2 Encoder, decoder, encoding method, and decoding method 有权
标题翻译：编码器，解码器，编码方法和解码方法
公开(公告)号：US07769584B2
公开(公告)日：2010-08-03
申请号：US11718452
申请日：2005-11-02
申请人： Masahiro Oshikiri , Hiroyuki Ehara , Koji Yoshida
发明人： Masahiro Oshikiri , Hiroyuki Ehara , Koji Yoshida
IPC分类号： G10L19/02
CPC分类号： G10L21/038
摘要： An encoder, decoder, encoding method, and decoding method enabling acquisition of high-quality decoded signal in scalable encoding of an original signal in first and second layers even if the second or upper layer section performs low bit-rate encoding. In the encoder, a spectrum residue shape codebook (305) stores candidates of spectrum residue shape vectors, a spectrum residue gain codebook (307) stores candidates of spectrum residue gains, and a spectrum residue shape vector and a spectrum residue gain are sequentially outputted from the candidates according to the instruction from a search section (306). A multiplier (308) multiplies a candidate of the spectrum residue shape vector by a candidate of the spectrum residue gain and outputs the result to a filtering section (303). The filtering section (303) performs filtering by using a pitch filter internal state set by a filter state setting section (302), a lag T outputted by a lag setting section (304), and a spectrum residue shape vector which has undergone gain adjustment.
摘要翻译：即使第二或上层部分执行低比特率编码，编码器，解码器，编码方法和解码方法能够在第一和第二层中的原始信号的可分级编码中获取高质量解码信号。在编码器中，频谱残差形状码本（305）存储频谱残差形状矢量的候补，频谱残差增益码本（307）存储频谱残差增益的候选，频谱残差形状矢量和频谱残差增益从候选人根据来自搜索部分的指示（306）。乘法器（308）将频谱残差形状矢量的候选乘以频谱残差增益的候选，并将结果输出到滤波部（303）。滤波部（303）通过使用由滤波器状态设定部（302）设定的音调滤波器内部状态，由滞后设定部（304）输出的滞后T和进行了增益调整的频谱残差图形矢量进行滤波。

8. 发明申请

US20080052066A1 Encoder, Decoder, Encoding Method, and Decoding Method 有权
标题翻译：编码器，解码器，编码方法和解码方法
公开(公告)号：US20080052066A1
公开(公告)日：2008-02-28
申请号：US11718452
申请日：2005-11-02
申请人： Masahiro Oshikiri , Hiroyuki Ehara , Koji Yoshida
发明人： Masahiro Oshikiri , Hiroyuki Ehara , Koji Yoshida
IPC分类号： G10L19/12
CPC分类号： G10L21/038
摘要： An encoder, decoder, encoding method, and decoding method enabling acquisition of high-quality decoded signal in scalable encoding of an original signal in first and second layers even if the second or upper layer section performs low bit-rate encoding. In the encoder, a spectrum residue shape codebook (305) stores candidates of spectrum residue shape vectors, a spectrum residue gain codebook (307) stores candidates of spectrum residue gains, and a spectrum residue shape vector and a spectrum residue gain are sequentially outputted from the candidates according to the instruction from a search section (306). A multiplier (308) multiplies a candidate of the spectrum residue shape vector by a candidate of the spectrum residue gain and outputs the result to a filtering section (303). The filtering section (303) performs filtering by using a pitch filter internal state set by a filter state setting section (302), a lag T outputted by a lag setting section (304), and a spectrum residue shape vector which has undergone gain adjustment.
摘要翻译：即使第二或上层部分执行低比特率编码，编码器，解码器，编码方法和解码方法能够在第一和第二层中的原始信号的可分级编码中获取高质量解码信号。在编码器中，频谱残差形状码本（305）存储频谱残差形状矢量的候补，频谱残差增益码本（307）存储频谱残差增益的候选，频谱残差形状矢量和频谱残差增益从候选人根据来自搜索部分的指示（306）。乘法器（308）将频谱残差形状矢量的候选乘以频谱残差增益的候选，并将结果输出到滤波部（303）。滤波部（303）通过使用由滤波器状态设定部（302）设定的音调滤波器内部状态，由滞后设定部（304）输出的滞后T和进行了增益调整的频谱残差图形矢量进行滤波。

9. 发明申请

US20110307248A1 ENCODER, DECODER, AND METHOD THEREFOR 有权
标题翻译：编码器，解码器及其方法
公开(公告)号：US20110307248A1
公开(公告)日：2011-12-15
申请号：US13203122
申请日：2010-02-25
申请人： Tomofumi Yamanashi , Masahiro Oshikiri , Hiroyuki Ehara
发明人： Tomofumi Yamanashi , Masahiro Oshikiri , Hiroyuki Ehara
IPC分类号： H04L27/00 , G10L21/00
CPC分类号： G10L19/0204 , G10L21/038
摘要： Provided is an encoder which can effectively encode/decode spectrum data of a broad frequency signal in a high frequency range, can dramatically reduce the number of the arithmetic operations to be performed, and can improve the quality of the decoded signal. The encoder comprises a first layer coding unit (202) which encodes an input signal in a low frequency range below a predetermined frequency to generate first coded information, a first layer decoding unit (203) which decodes the first coded information to generate a decoded signal, and a second layer coding unit (206) which splits the input signal in a high frequency range above a predetermined frequency, into a plurality of sub-bands, presumes the respective sub-hands from the input signal or decoded signal, partially selects a spectrum component within each sub-band, and calculates an amplitude adjustment parameter used to adjust the amplitude of the selected spectrum component to thereby generate second coding information.
摘要翻译：提供了能够在高频范围内有效地编码/解码宽频信号的频谱数据的编码器，可以显着地减少要执行的算术运算的数量，并且可以提高解码信号的质量。编码器包括对低于预定频率的低频范围内的输入信号进行编码以产生第一编码信息的第一层编码单元（202），对第一编码信息进行解码以产生解码信号的第一层解码单元（203），以及将高于预定频率的高频范围内的输入信号分割成多个子带的第二层编码单元（206），从输入信号或解码信号中假设相应的副手，部分地选择并且计算用于调整所选择的频谱分量的振幅的幅度调整参数，从而生成第二编码信息。

10. 发明授权

US08731909B2 Spectral smoothing device, encoding device, decoding device, communication terminal device, base station device, and spectral smoothing method 有权
标题翻译：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
申请人： Tomofumi Yamanashi , Masahiro Oshikiri , Toshiyuki Morii , Hiroyuki Ehara
发明人： Tomofumi Yamanashi , Masahiro Oshikiri , Toshiyuki Morii , Hiroyuki Ehara
IPC分类号： G10L19/02 , G10L19/14 , G10L19/00
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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