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11. 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。

12. 发明授权

US09514757B2 Stereo signal encoding device, stereo signal decoding device, stereo signal encoding method, and stereo signal decoding method 有权
标题翻译：立体声信号编码装置，立体声信号解码装置，立体声信号编码方法和立体声信号解码方法
公开(公告)号：US09514757B2
公开(公告)日：2016-12-06
申请号：US13882750
申请日：2011-10-17
申请人： Masahiro Oshikiri , Hiroyuki Ehara
发明人： Masahiro Oshikiri , Hiroyuki Ehara
IPC分类号： H04R5/00 , G10L19/008 , G10L19/22
CPC分类号： G10L19/008 , G10L19/22
摘要： A stereo signal encoding device is provided that enables a lower bitrate without decreasing quality when applying an intermittent transmission technique to a stereo signal. A stereo encoding unit generates first stereo encoded data by encoding the stereo signal when the stereo signal of the current frame is an audio section. A stereo DTX encoding unit is a means for encoding the stereo signal when the stereo signal of the current frame is a non-audio section. The stereo DTX encoding unit generates second stereo encoded data by encoding each of a monaural signal spectral parameter that is a spectral parameter of a monaural signal generated using the first channel signal and the second channel signal, first channel signal information relating to the first channel signal, and second channel signal information relating to the second channel signal.
摘要翻译：提供一种立体声信号编码装置，当将间歇传输技术应用于立体声信号时，能够实现较低的比特率而不降低质量。当当前帧的立体声信号是音频部分时，立体声编码单元通过对立体声信号进行编码来产生第一立体声编码数据。立体声DTX编码单元是当当前帧的立体声信号是非音频部分时对立体声信号进行编码的装置。立体声DTX编码单元通过对作为使用第一声道信号和第二声道信号产生的单声道信号的频谱参数的单声道信号频谱参数进行编码，生成第二立体声编码数据，与第一声道信号有关的第一声道信号信号，以及与第二信道信号相关的第二信道信号信息。

13. 发明申请

US20140122065A1 VOICE CODING DEVICE, VOICE DECODING DEVICE, VOICE CODING METHOD AND VOICE DECODING METHOD 有权
标题翻译：语音编码设备，语音解码设备，语音编码方法和语音解码方法
公开(公告)号：US20140122065A1
公开(公告)日：2014-05-01
申请号：US14123841
申请日：2012-05-25
申请人： Katsunori Daimou , Masahiro Oshikiri , Hiroyuki Ehara
发明人： Katsunori Daimou , Masahiro Oshikiri , Hiroyuki Ehara
IPC分类号： H04B1/66
CPC分类号： H04B1/667 , G10L19/02 , G10L19/0204 , G10L19/24 , G10L21/038
摘要： A voice coding device capable of preventing overall quality degradation even when the bit rate for coding is lowered. The voice coding device codes a wide band signal in a first layer, and codes an extended band signal whose frequency band is located in higher frequency than the wide band signal in an extended band layer. An adaptive band selection unit (301) selects a frequency band to be excluded from a coding object in the extended band layer or a frequency band whose energy is to be attenuated in the extended band layer. A band-limited signal generation unit (302) excludes, within the frequency band of an input signal, the frequency band selected by the adaptive band selection unit (301) from the coding object, or attenuates the energy of the frequency band selected by the adaptive band selection unit (301).
摘要翻译：即使当编码的比特率降低时，能够防止整体质量劣化的语音编码装置。语音编码装置对第一层中的宽带信号进行编码，并且对扩展频带信号进行编码，其频带位于比扩频带中的宽带信号更高的频带。自适应频带选择单元（301）从扩展频带层中的编码对象或能量在扩展频带层中衰减的频带中选择要排除的频带。频带限制信号生成单元（302）在输入信号的频带内从编码对象排除由自适应频带选择部（301）选择的频带，或者衰减由所述编码对象选择的频带的能量自适应频带选择单元（301）。

14. 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。

15. 发明授权

US08660851B2 Stereo signal decoding device and stereo signal decoding method 有权
标题翻译：立体声信号解码装置和立体声信号解码方法
公开(公告)号：US08660851B2
公开(公告)日：2014-02-25
申请号：US13322202
申请日：2010-05-25
申请人： Tomofumi Yamanashi , Masahiro Oshikiri , Hiroyuki Ehara
发明人： Tomofumi Yamanashi , Masahiro Oshikiri , Hiroyuki Ehara
IPC分类号： G10L19/008
CPC分类号： G10L19/005 , G10L19/008
摘要： A decoding device reduces abrupt changes in the number of channels in a decoded signal when transmission errors occur as a result of lost frames in an encoding/decoding system for multichannel signals. In the device, a demultiplexer receives an encoded monaural signal and an encoded differential signal and detects change over time in the received encoded differential signal. An M signal decoder decodes the encoded monaural signal and obtains a decoded monaural signal. An S signal decoder decodes the encoded differential signal and obtains a decoded differential signal. A smoothing unit performs smoothing on the decoded differential signal by means of a computation involving the decoded differential signal and coefficients corresponding to the change over time detected by the demultiplexer. An L/R signal computation unit computes a decoded stereo signal from the decoded monaural signal and the smoothed decoded differential signal.
摘要翻译：由于多通道信号的编码/解码系统中的丢失帧的结果，当传输错误发生时，解码装置减少解码信号中的信道数量的突然变化。在该装置中，解复用器接收经编码的单声道信号和经编码的差分信号，并检测接收到的编码差分信号中随时间的变化。 M信号解码器解码编码的单声道信号并获得解码的单声道信号。 S信号解码器对编码的差分信号进行解码并获得解码的差分信号。平滑单元通过涉及解码的差分信号的计算和对应于由解复用器检测到的随时间变化的系数对解码的差分信号进行平滑处理。 L / R信号计算单元从解码的单声道信号和平滑的解码的差分信号计算解码的立体声信号。

16. 发明申请

US20130223633A1 STEREO SIGNAL ENCODING DEVICE, STEREO SIGNAL DECODING DEVICE, STEREO SIGNAL ENCODING METHOD, AND STEREO SIGNAL DECODING METHOD 有权
标题翻译：立体声信号编码装置，立体信号解码装置，立体声信号编码方法和立体声信号解码方法
公开(公告)号：US20130223633A1
公开(公告)日：2013-08-29
申请号：US13882750
申请日：2011-10-17
申请人： Masahiro Oshikiri , Hiroyuki Ehara
发明人： Masahiro Oshikiri , Hiroyuki Ehara
IPC分类号： G10L19/008
CPC分类号： G10L19/008 , G10L19/22
摘要： Provided is a stereo signal encoding device that enables a lower bitrate without decreasing quality when applying an intermittent transmission technique to a stereo signal. A stereo encoding unit (103) generates first stereo encoded data by encoding the stereo signal when the stereo signal of the current frame is an audio section A stereo DTX encoding unit (104) is a means for encoding the stereo signal when the stereo signal of the current frame is a non-audio section, and generates second stereo encoded data by encoding each of: a monaural signal spectral parameter that is a spectral parameter of a monaural signal generated using the first channel signal and the second channel signal; first channel signal information relating to the first channel signal; and second channel signal information relating to the second channel signal.
摘要翻译：提供了一种立体声信号编码装置，当将间歇传输技术应用于立体声信号时，能够实现较低的比特率而不降低质量。立体声编码单元（103）当当前帧的立体声信号是音频部分A时通过对立体声信号进行编码来产生第一立体声编码数据。立体声DTX编码单元（104）是当立体声信号的立体声信号当前帧是非音频部分，并且通过编码以下各项来生成第二立体声编码数据：单声道信号频谱参数，其是使用第一信道信号和第二信道信号产生的单声道信号的频谱参数; 与第一信道信号相关的第一信道信号信息; 以及与第二信道信号相关的第二信道信号信息。

17. 发明申请

US20130132099A1 CODING DEVICE, DECODING DEVICE, AND METHODS THEREOF 有权
标题翻译：编码装置，解码装置及其方法
公开(公告)号：US20130132099A1
公开(公告)日：2013-05-23
申请号：US13814597
申请日：2011-11-08
申请人： Masahiro Oshikiri , Takako Hori , Hiroyuki Ehara
发明人： Masahiro Oshikiri , Takako Hori , Hiroyuki Ehara
IPC分类号： G10L19/008
CPC分类号： G10L19/008 , G10L19/22 , G10L19/24 , G10L21/038
摘要： Provided are a coding device, a decoding device, and methods thereof, with which it is possible to implement high sound quality coding and decoding in layered coding (scalable coding or embedded coding) wherein each layer comprises a plurality of bit rates (multi-rate). In the coding device (100), a feature analysis unit (101) extracts feature values of an input signal. Then a bit rate determination unit (102) determines, on the basis of the feature values of the input signal, a combination of a coding rate (low region coding rate) of a low region signal coding unit (104) which carries out coding of a low region part of the input signal and a coding rate (high region coding rate) of a high region signal coding unit (105) which carries out coding of a high region part of the input signal.
摘要翻译：提供了一种编码装置，解码装置及其方法，其可以在分层编码（可伸缩编码或嵌入编码）中实现高音质编码和解码，其中每层包括多个比特率（多速率）。在编码装置（100）中，特征分析部（101）提取输入信号的特征值。然后，比特率确定单元（102）基于输入信号的特征值，确定执行编码的低区域信号编码单元（104）的编码率（低区域编码率）输入信号的低区域部分和执行输入信号的高区域部分的编码的高区域信号编码单元（105）的编码率（高区域编码率）。

18. 发明申请

US20120065984A1 DECODING DEVICE AND DECODING METHOD 有权
标题翻译：解码设备和解码方法
公开(公告)号：US20120065984A1
公开(公告)日：2012-03-15
申请号：US13322202
申请日：2010-05-25
申请人： Tomofumi Yamanashi , Masahiro Oshikiri , Hiroyuki Ehara
发明人： Tomofumi Yamanashi , Masahiro Oshikiri , Hiroyuki Ehara
IPC分类号： G10L21/00
CPC分类号： G10L19/005 , G10L19/008
摘要： Provided is a decoding device that can reduce abrupt changes in the number of channels in a decoded signal when transmission errors occur as a result of lost frames in an encoding/decoding system for multichannel signals. Said decoding device is also capable of per-sample smoothing and can reduce degradation of audio quality. In the provided device, a demultiplexer (301) receives an encoded monaural signal and an encoded differential signal and detects change over time in the received encoded differential signal. An M signal decoder (302) decodes the encoded monaural signal and obtains a decoded monaural signal. An S signal decoder (303) decodes the encoded differential signal and obtains a decoded differential signal. A smoothing unit (304) performs smoothing on the decoded differential signal by means of a computation involving the decoded differential signal and coefficients corresponding to the change over time detected by the demultiplexer (301). An L/R signal computation unit (305) computes a decoded stereo signal from the decoded monaural signal and the smoothed decoded differential signal.
摘要翻译：提供了一种解码装置，当由于多信道信号的编码/解码系统中的丢失帧而导致发送错误时，可以减少解码信号中的信道数量的突然变化。所述解码装置还能够进行逐采样平滑，并且可以降低音频质量的劣化。在提供的装置中，解复用器（301）接收经编码的单声道信号和经编码的差分信号，并检测接收到的编码差分信号中随时间的变化。 M信号解码器（302）解码编码的单声道信号并获得解码的单声道信号。 S信号解码器（303）解码编码的差分信号并获得解码的差分信号。平滑单元（304）通过涉及解码的差分信号的计算和对应于由解复用器（301）检测的随时间变化的系数对解码的差分信号进行平滑处理。 L / R信号计算单元（305）根据解码的单声道信号和经平滑解码的差分信号计算解码的立体声信号。

19. 发明授权

US09373332B2 Coding device, decoding device, and methods thereof 有权
标题翻译：编码装置，解码装置及其方法
公开(公告)号：US09373332B2
公开(公告)日：2016-06-21
申请号：US13814597
申请日：2011-11-08
申请人： Masahiro Oshikiri , Takako Hori , Hiroyuki Ehara
发明人： Masahiro Oshikiri , Takako Hori , Hiroyuki Ehara
IPC分类号： G10L19/00 , G10L19/008 , G10L19/22 , G10L21/038 , G10L19/24
CPC分类号： G10L19/008 , G10L19/22 , G10L19/24 , G10L21/038
摘要： Provided are a coding device, a decoding device, and methods thereof, with which it is possible to implement high sound quality coding and decoding in layered coding (scalable coding or embedded coding) wherein each layer comprises a plurality of bit rates (multi-rate). In the coding device (100), a feature analysis unit (101) extracts feature values of an input signal. Then a bit rate determination unit (102) determines, on the basis of the feature values of the input signal, a combination of a coding rate (low region coding rate) of a low region signal coding unit (104) which carries out coding of a low region part of the input signal and a coding rate (high region coding rate) of a high region signal coding unit (105) which carries out coding of a high region part of the input signal.
摘要翻译：提供了一种编码装置，解码装置及其方法，其可以在分层编码（可伸缩编码或嵌入编码）中实现高音质编码和解码，其中每层包括多个比特率（多速率）。在编码装置（100）中，特征分析部（101）提取输入信号的特征值。然后，比特率确定单元（102）基于输入信号的特征值，确定执行编码的低区域信号编码单元（104）的编码率（低区域编码率）输入信号的低区域部分和执行输入信号的高区域部分的编码的高区域信号编码单元（105）的编码率（高区域编码率）。

20. 发明授权

US08983831B2 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：US08983831B2
公开(公告)日：2015-03-17
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： G10L19/02 , G10L21/038
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。

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