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    Coding device, decoding device, method, program and recording medium thereof
    1.
    发明授权
    Coding device, decoding device, method, program and recording medium thereof 有权

    公开(公告)号：US10074376B2

    公开(公告)日：2018-09-11

    申请号：US15306622

    申请日：2015-03-16

    申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

    发明人： Takehiro Moriya ,  Yutaka Kamamoto ,  Noboru Harada

    IPC分类号： G10L19/00 ,  G10L19/07 ,  G10L19/032 ,  G10L19/06

    CPC分类号： G10L19/07 ,  G10L19/032 ,  G10L19/06 ,  G10L19/24 ,  G10L2019/0016

    摘要： A technology of accurately coding and decoding coefficients which are convertible into linear prediction coefficients even for a frame in which the spectrum variation is great while suppressing an increase in the code amount as a whole is provided. A coding device includes: a first coding unit that obtains a first code by coding coefficients which are convertible into linear prediction coefficients of more than one order; and a second coding unit that obtains a second code by coding at least quantization errors of the first coding unit if (A-1) an index Q commensurate with how high the peak-to-valley height of a spectral envelope is, the spectral envelope corresponding to the coefficients which are convertible into the linear prediction coefficients of more than one order, is larger than or equal to a predetermined threshold value Th1 and/or (B-1) an index Q′ commensurate with how short the peak-to-valley height of the spectral envelope is, is smaller than or equal to a predetermined threshold value Th1′.

    CODING DEVICE, DECODING DEVICE, METHOD, PROGRAM AND RECORDING MEDIUM THEREOF
    3.
    发明申请
    CODING DEVICE, DECODING DEVICE, METHOD, PROGRAM AND RECORDING MEDIUM THEREOF 审中-公开
    编码设备，解码设备，方法，程序和记录介质

    公开(公告)号：US20170053656A1

    公开(公告)日：2017-02-23

    申请号：US15307059

    申请日：2015-03-16

    申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

    发明人： Takehiro MORIYA ,  Yutaka KAMAMOTO ,  Noboru HARADA

    IPC分类号： G10L19/07 ,  G10L19/005 ,  G10L19/038

    CPC分类号： G10L19/07 ,  G10L19/005 ,  G10L19/038 ,  G10L2019/0016

    摘要： A coding method and a decoding method are provided which can use in combination a predictive coding and decoding method which is a coding and decoding method that can accurately express coefficients which are convertible into linear prediction coefficients with a small code amount and a coding and decoding method that can obtain correctly, by decoding, coefficients which are convertible into linear prediction coefficients of the present frame if a linear prediction coefficient code of the present frame is correctly input to a decoding device. A coding device includes: a predictive coding unit that obtains a first code by coding a differential vector formed of differentials between a vector of coefficients which are convertible into linear prediction coefficients of more than one order of the present frame and a prediction vector containing at least a predicted vector from a past frame, and obtains a quantization differential vector corresponding to the first code; and a non-predictive coding unit that generates a second code by coding a correction vector which is formed of differentials between the vector of the coefficients which are convertible into the linear prediction coefficients of more than one order of the present frame and the quantization differential vector or formed of some of elements of the differentials.

    摘要翻译： 提供了一种编码方法和解码方法，其可以组合使用预测编码和解码方法，该预测编码和解码方法是可以用小代码量和编码和解码方法精确地表达可转换为线性预测系数的系数的编码和解码方法 如果当前帧的线性预测系数码被正确地输入到解码装置，则可以通过解码可以将可转换成当前帧的线性预测系数的系数正确地获得。 一种编码装置，包括：预测编码单元，其通过对由可转换为当前帧的多于一个阶的线性预测系数的系数矢量和至少包含至少一个的预测矢量的差分矢量构成的差分矢量进行编码， 来自过去帧的预测矢量，并且获得对应于第一码的量化差分矢量; 以及非预测编码单元，其通过对由可转换为当前帧的多于一个阶的线性预测系数的矢量和量化差分矢量之间的差分构成的校正矢量进行编码来生成第二码， 或由差分的一些元件形成。

    METHOD AND APPARATUS FOR PREDICTING HIGH BAND EXCITATION SIGNAL
    5.
    发明申请
    METHOD AND APPARATUS FOR PREDICTING HIGH BAND EXCITATION SIGNAL 有权
    用于预测高带激发信号的方法和装置

    公开(公告)号：US20160210979A1

    公开(公告)日：2016-07-21

    申请号：US15080950

    申请日：2016-03-25

    申请人： HUAWEI TECHNOLOGIES CO.,LTD.

    发明人： Zexin Liu ,  Lei Miao

    IPC分类号： G10L19/12 ,  G10L19/06 ,  G10L19/02

    CPC分类号： G10L19/12 ,  G10L19/0208 ,  G10L19/06 ,  G10L19/08 ,  G10L19/24 ,  G10L21/038 ,  G10L2019/0016

    摘要： A method and an apparatus for predicting a high band excitation signal are disclosed. The method includes: acquiring, according to a received low band bitstream, a set of spectral frequency parameters that are arranged in an order of frequencies, calculating a spectral frequency parameter difference between every two spectral frequency parameters that have a same position interval; acquiring a minimum spectral frequency parameter difference from the calculated spectral frequency parameter differences; determining, according to a frequency bin that corresponds to the minimum spectral frequency parameter difference, a start frequency bin for predicting a high band excitation signal from a low band; and predicting the high band excitation signal from the low band according to the start frequency bin. By implementing embodiments of the present invention, a high band excitation signal can be better predicted, thereby improving performance of the high band excitation signal.

    摘要翻译： 公开了一种用于预测高频带激励信号的方法和装置。 该方法包括：根据接收到的低频带比特流获取以频率顺序排列的一组频谱频率参数，计算具有相同位置间隔的每两个频谱频率参数之间的频谱频率参数差; 从所计算的频谱频率参数差获取最小频谱参数差; 根据对应于最小频谱频率参数差的频率仓确定用于从低频段预测高频带激励信号的起始频率仓; 并根据起始频率仓预测来自低频段的高频激励信号。 通过实现本发明的实施例，可以更好地预测高频带激励信号，从而提高高频带激励信号的性能。

    APPARATUS AND METHOD FOR AUDIO SIGNAL ENVELOPE ENCODING, PROCESSING, AND DECODING BY SPLITTING THE AUDIO SIGNAL ENVELOPE EMPLOYING DISTRIBUTION QUANTIZATION AND CODING
    6.
    发明申请
    APPARATUS AND METHOD FOR AUDIO SIGNAL ENVELOPE ENCODING, PROCESSING, AND DECODING BY SPLITTING THE AUDIO SIGNAL ENVELOPE EMPLOYING DISTRIBUTION QUANTIZATION AND CODING 审中-公开
    音频信号编码，处理和解码的装置和方法，分析使用分配数量和编码的音频信号包

    公开(公告)号：US20160148621A1

    公开(公告)日：2016-05-26

    申请号：US14964234

    申请日：2015-12-09

    申请人： Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.

    发明人： Tom Baeckstroem ,  Benjamin Schubert ,  Markus Multrus ,  Sascha Disch ,  Konstantin Schmidt ,  Grzegorz Pietrzyk

    IPC分类号： G10L19/06 ,  G10L19/032

    CPC分类号： G10L19/06 ,  G10L19/03 ,  G10L19/032 ,  G10L2019/0016

    摘要： An apparatus for decoding to obtain a reconstructed audio signal envelope includes a signal envelope reconstructor for generating the reconstructed audio signal envelope depending on one or more splitting points and an output interface for outputting the reconstructed audio signal envelope. The signal envelope reconstructor is configured to generate the reconstructed audio signal envelope such that the one or more splitting points divide the reconstructed audio signal envelope into two or more audio signal envelope portions, and to generate the reconstructed audio signal envelope such that, for each of the two or more signal envelope portions, an absolute value of its signal envelope portion value is greater than half of an absolute value of the signal envelope portion value of each of the other signal envelope portions.

    摘要翻译： 用于解码以获得重构音频信号包络的装置包括用于根据一个或多个分割点产生重构音频信号包络的信号包络重建器和用于输出重构音频信号包络的输出接口。 信号包络重构器被配置为产生重建的音频信号包络，使得一个或多个分割点将重建的音频信号包络分成两个或更多个音频信号包络部分，并且生成重建的音频信号包络，使得对于每个 两个或多个信号包络部分，其信号包络部分值的绝对值大于每个其它信号包络部分的信号包络部分值的绝对值的一半。

    TEMPORAL GAIN ADJUSTMENT BASED ON HIGH-BAND SIGNAL CHARACTERISTIC
    9.
    发明申请
    TEMPORAL GAIN ADJUSTMENT BASED ON HIGH-BAND SIGNAL CHARACTERISTIC 有权
    基于高频信号特征的时间增益调整

    公开(公告)号：US20150380007A1

    公开(公告)日：2015-12-31

    申请号：US14731276

    申请日：2015-06-04

    申请人： QUALCOMM Incorporated

    发明人： Venkatraman S. Atti ,  Venkatesh Krishnan ,  Vivek Rajendran ,  Venkata Subrahmanyam Chandra Sekhar Chebiyyam ,  Subasingha Shaminda Subasingha

    IPC分类号： G10L19/12

    CPC分类号： G10L19/12 ,  G10L19/0204 ,  G10L19/032 ,  G10L19/06 ,  G10L19/24 ,  G10L21/0224 ,  G10L21/038 ,  G10L25/12 ,  G10L2019/0016

    摘要： The present disclosure provides techniques for adjusting a temporal gain parameter and for adjusting linear prediction coefficients. A value of the temporal gain parameter may be based on a comparison of a synthesized high-band portion of an audio signal to a high-band portion of the audio signal. If a signal characteristic of an upper frequency range of the high-band portion satisfies a first threshold, the temporal gain parameter may be adjusted. A linear prediction (LP) gain may be determined based on an LP gain operation that uses a first value for an LP order. The LP gain may be associated with an energy level of an LP synthesis filter. The LP order may be reduced if the LP gain satisfies a second threshold.

    摘要翻译： 本公开提供了用于调整时间增益参数和用于调整线性预测系数的技术。 时间增益参数的值可以基于音频信号的合成高频带部分与音频信号的高频带部分的比较。 如果高频带部分的较高频率范围的信号特征满足第一阈值，则可以调整时间增益参数。 可以基于对LP阶使用第一值的LP增益操作来确定线性预测（LP）增益。 LP增益可以与LP合成滤波器的能级相关联。 如果LP增益满足第二阈值，LP阶可以减小。

    IMPROVED CORRECTION OF FRAME LOSS DURING SIGNAL DECODING
    10.
    发明申请
    IMPROVED CORRECTION OF FRAME LOSS DURING SIGNAL DECODING 有权
    改善信号解码过程中帧丢失的校正

    公开(公告)号：US20150371647A1

    公开(公告)日：2015-12-24

    申请号：US14764422

    申请日：2014-01-30

    申请人： ORANGE

    发明人： Julien Faure ,  Stephane Ragot

    IPC分类号： G10L19/02 ,  G10L19/12 ,  G10L19/06 ,  G10L19/005

    CPC分类号： G10L19/02 ,  G10L19/005 ,  G10L19/06 ,  G10L19/12 ,  G10L2019/0016

    摘要： A signal processing device, media, and method are provided, where a signal comprises a succession of samples distributed in successive frames. The processing is implemented during decoding of such a signal in order to replace at least one signal frame lost in decoding, and comprising in particular: a) searching, in a valid signal available to the decoder, for a signal segment of length corresponding to a period set as a function of the valid signal; b) analyzing a spectrum of the segment in order to determine spectral components of the segment; and c) synthesizing at least one replacement frame for the lost frame by construction of a synthesized signal from at least a portion of the spectral components.

    摘要翻译： 提供信号处理设备，介质和方法，其中信号包括分布在连续帧中的一系列样本。 在对这种信号的解码期间进行处理以便在解码中替换丢失的至少一个信号帧，并且特别地包括：a）在解码器可用的有效信号中搜索对应于 周期设置为有效信号的函数; b）分析该段的频谱，以确定该段的频谱分量; 以及c）通过从所述光谱分量的至少一部分构造合成信号来合成所述丢失帧的至少一个替换帧。