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    Preprocessing method, preprocessing apparatus and coding device
    1.
    发明授权
    Preprocessing method, preprocessing apparatus and coding device 有权
    预处理方法，预处理装置和编码装置

    公开(公告)号：US08566085B2

    公开(公告)日：2013-10-22

    申请号：US12724066

    申请日：2010-03-15

    申请人： Lei Miao ,  Fengyan Qi ,  Jianfeng Xu ,  Dejun Zhang ,  Qing Zhang

    发明人： Lei Miao ,  Fengyan Qi ,  Jianfeng Xu ,  Dejun Zhang ,  Qing Zhang

    IPC分类号： G10L19/00

    CPC分类号： G10L21/06 ,  G10L19/06 ,  G10L19/09 ,  G10L19/18

    摘要： The present disclosure relates to coding and decoding technologies, and discloses a preprocessing method, a preprocessing apparatus, and a coding device. The preprocessing method includes: obtaining characteristic information of a current frame signal; identifying whether the current frame signal requires no coding operation of removing LTC according to the characteristic information of the current frame signal and preset information; and if identifying that the current frame signal requires no coding operation of removing LTC, performing the coding operation of removing STC for the current frame signal; and if identifying that the current frame signal requires the coding operation of removing LTC, performing the coding operations of removing both LTC and STC for the current frame signal. Through the technical solution provided herein, the coding operation of removing LTC is performed for only part of the input frame signals.

    摘要翻译： 本公开涉及编码和解码技术，并且公开了一种预处理方法，预处理装置和编码装置。 预处理方法包括：获得当前帧信号的特征信息; 识别当前帧信号是否不需要根据当前帧信号和预设信息的特征信息去除LTC的编码操作; 并且如果识别出当前帧信号不需要去除LTC的编码操作，则执行去除当前帧信号的STC的编码操作; 并且如果识别当前帧信号需要去除LTC的编码操作，则执行去除当前帧信号的LTC和STC的编码操作。 通过本文提供的技术方案，仅对部分输入帧信号执行去除LTC的编码操作。

    Method and device for performing frame erasure concealment to higher-band signal
    3.
    发明授权
    Method and device for performing frame erasure concealment to higher-band signal 有权
    用于对较高频带信号进行帧擦除隐藏的方法和装置

    公开(公告)号：US08200481B2

    公开(公告)日：2012-06-12

    申请号：US12129118

    申请日：2008-05-29

    申请人： Jianfeng Xu ,  Lei Miao ,  Chen Hu ,  Qing Zhang ,  Lijing Xu ,  Wei Li ,  Zhengzhong Du ,  Yi Yang ,  Fengyan Qi ,  Wuzhou Zhan ,  Dongqi Wang

    发明人： Jianfeng Xu ,  Lei Miao ,  Chen Hu ,  Qing Zhang ,  Lijing Xu ,  Wei Li ,  Zhengzhong Du ,  Yi Yang ,  Fengyan Qi ,  Wuzhou Zhan ,  Dongqi Wang

    IPC分类号： G10L11/04 ,  G10L19/00

    CPC分类号： G10L19/005 ,  G10L19/0204

    摘要： The present invention discloses a method for performing a frame erasure concealment to a higher-band signal, including: calculating a periodic intensity of a higher-band signal with respect to a lower-band signal; judging whether the periodic intensity of the higher-band signal is higher than or equal to a preconfigured threshold; if the periodic intensity of the higher-band signal is higher than or equal to the preconfigured threshold, using a pitch period repetition method to perform the frame erasure concealment to the higher-band signal of a current lost frame; and if the periodic intensity of the higher-band signal is lower than the preconfigured threshold, using a previous frame data repetition method to perform the frame erasure concealment to the higher-band signal of the current lost frame. The present invention further discloses a device for performing a frame erasure concealment to a higher-band signal and a speech decoder. The problem that the quality of the voice signal is lowered is avoided.

    摘要翻译： 本发明公开了一种用于对较高频带信号执行帧擦除隐藏的方法，包括：计算相对于较低频带信号的较高频带信号的周期性强度; 判断高频信号的周期性强度是否高于或等于预配置阈值; 如果高频信号的周期性强度高于或等于预配置阈值，则使用音调周期重复方法对当前丢失帧的较高频带信号执行帧擦除隐藏; 并且如果高频信号的周期性强度低于预配置阈值，则使用先前的帧数据重复方法对当前丢失帧的较高频带信号执行帧擦除隐藏。 本发明还公开了一种用于对较高频带信号和语音解码器执行帧擦除隐藏的装置。 避免语音信号质量下降的问题。

    Method and apparatus for implementing speech decoding in speech decoder field of the invention
    4.
    发明授权
    Method and apparatus for implementing speech decoding in speech decoder field of the invention 有权
    在本发明的语音解码器领域中实现语音解码的方法和装置

    公开(公告)号：US08145480B2

    公开(公告)日：2012-03-27

    申请号：US12426379

    申请日：2009-04-20

    申请人： Jianfeng Xu ,  Lijing Xu ,  Qing Zhang ,  Wei Li ,  Shenghu Sang ,  Zhengzhong Du ,  Chen Hu

    发明人： Jianfeng Xu ,  Lijing Xu ,  Qing Zhang ,  Wei Li ,  Shenghu Sang ,  Zhengzhong Du ,  Chen Hu

    IPC分类号： G10L21/02 ,  G10L19/00

    CPC分类号： G10L19/005 ,  G10L19/09 ,  G10L19/107

    摘要： The present disclosure relates to a decoding method and apparatus. The method includes: receiving data frames from the coder; if any erroneous frame appears, calculating a pitch lag parameter of the erroneous frame; decoding the data frames according to the calculated pitch lag parameter of the erroneous frame, and obtaining decoded data. The process of determining the pitch lag parameter includes: determining the number of continuous erroneous frames and the pitch lag parameter of the previous frame; adjusting the pitch lag parameter of the previous frame according to the number of the continuous erroneous frames and a preset adjustment policy, and calculating and determining the pitch lag parameter of a current erroneous frame, wherein the preset adjustment policy is adjusting the determined pitch lag parameter of the current erroneous frame within a preset value range according to the number of the continuous erroneous frames.

    摘要翻译： 本公开涉及一种解码方法和装置。 该方法包括：从编码器接收数据帧; 如果出现任何错误帧，则计算错误帧的音调滞后参数; 根据所计算的错误帧的音调滞后参数对数据帧进行解码，并获得解码数据。 确定音调滞后参数的过程包括：确定连续错误帧的数量和前一帧的音调滞后参数; 根据连续错误帧的数量和预设的调整策略来调整前一帧的音调滞后参数，以及计算和确定当前错误帧的音调滞后参数，其中预设调整策略正在调整所确定的音调滞后参数 根据连续错误帧的数量在预设值范围内的当前错误帧。

    METHOD AND APPARATUS FOR OBTAINING PITCH GAIN, AND CODER AND DECODER
    6.
    发明申请
    METHOD AND APPARATUS FOR OBTAINING PITCH GAIN, AND CODER AND DECODER 审中-公开
    用于获取增益的方法和装置，以及编码器和解码器

    公开(公告)号：US20110218800A1

    公开(公告)日：2011-09-08

    申请号：US13109679

    申请日：2011-05-17

    申请人： Dejun Zhang ,  Lei Miao ,  Jianfeng Xu ,  Fengyan Qi ,  Qing Zhang ,  Lixiong Li ,  Fuwei Ma

    发明人： Dejun Zhang ,  Lei Miao ,  Jianfeng Xu ,  Fengyan Qi ,  Qing Zhang ,  Lixiong Li ,  Fuwei Ma

    IPC分类号： G10L21/00

    CPC分类号： G10L19/08 ,  G10L2019/0011

    摘要： The present invention relates to a method and apparatus for obtaining a pitch gain, and a coder and a decoder. The method includes: obtaining information about an input signal; and obtaining a pitch gain corresponding to the information about the input signal according to the correspondence between the signal information and the pitch gain. The embodiments of the present invention obtain the corresponding pitch gain according to the signal information by using the obtained correspondence between the signal information and the pitch gain, and the pitch gain is applicable to the coder and the decoder, thus making it unnecessary for the coder to transmit the pitch gain to the decoder and solving the problem of bit overhead. The embodiments of the present invention determine the pitch gain adaptively according to the signal information, avoid consumption of extra bits for quantizing the pitch gain, avoid impact on the coding performance, and improve the compression ratio.

    摘要翻译： 本发明涉及一种用于获得音调增益的方法和装置，以及编码器和解码器。 该方法包括：获取关于输入信号的信息; 并且根据信号信息和音调增益之间的对应关系，获得与输入信号有关的信息对应的音调增益。 本发明的实施例通过使用获得的信号信息和音调增益之间的对应关系，根据信号信息获得相应的音调增益，并且音调增益可应用于编码器和解码器，从而不需要编码器 将音调增益发送到解码器并解决位开销的问题。 本发明的实施例根据信号信息自适应地确定音调增益，避免消耗用于量化音调增益的额外比特，避免对编码性能的影响，并提高压缩比。

    FRAME COMPENSATION METHOD AND SYSTEM
    8.
    发明申请
    FRAME COMPENSATION METHOD AND SYSTEM 有权
    框架补偿方法与系统

    公开(公告)号：US20090210237A1

    公开(公告)日：2009-08-20

    申请号：US12427112

    申请日：2009-04-21

    申请人： Ling SHEN ,  Jianfeng XU ,  Yaohua GUAN ,  Wei LI ,  Lei MIAO ,  Lijing XU ,  Qing ZHANG ,  Zhengzhong DU ,  Chen HU ,  Yi YANG

    发明人： Ling SHEN ,  Jianfeng XU ,  Yaohua GUAN ,  Wei LI ,  Lei MIAO ,  Lijing XU ,  Qing ZHANG ,  Zhengzhong DU ,  Chen HU ,  Yi YANG

    IPC分类号： G10L21/00

    CPC分类号： H04L1/0083 ,  G10L19/005

    摘要： A frame compensation method is provided. The method includes: obtaining a length of a lost frame and a length of a correct frame; determining that the length of the correct frame is integral power of 2 times of the length of the lost frame, and then obtaining a data sequence with the same length as the length of the lost frame according to the correct frame; and compensating the lost frame according to the data sequence to obtain a compensated data frame. A frame compensation system is also provided. Lost frames in various formats are compensated according to correct frames in various formats, so that the limitation of the related art that a lost frame in a single format can be merely compensated according to a correct frame in a single format is eliminated, and the effect of the compensated data frames is better than that of filling comfort noises.

    摘要翻译： 提供了帧补偿方法。 该方法包括：获得丢失帧的长度和正确帧的长度; 确定正确帧的长度是丢失帧长度的2倍的整数倍，然后根据正确的帧获得与丢失帧的长度相同长度的数据序列; 并根据数据序列补偿丢失帧以获得补偿数据帧。 还提供了帧补偿系统。 各种格式的丢帧按照各种格式的正确帧进行补偿，因此消除了相关技术的限制，即单个格式的丢失帧只能根据单一格式的正确帧进行补偿，并且效果 的补偿数据帧优于填充舒适噪声。

    METHOD AND APPARATUS FOR OBTAINING AN ATTENUATION FACTOR
    9.
    发明申请
    METHOD AND APPARATUS FOR OBTAINING AN ATTENUATION FACTOR 有权
    用于获得衰减因子的方法和装置

    公开(公告)号：US20090116486A1

    公开(公告)日：2009-05-07

    申请号：US12264593

    申请日：2008-11-04

    申请人： Wuzhou ZHAN ,  Dongqi WANG ,  Yongfeng TU ,  Jing WANG ,  Qing ZHANG ,  Lei MIAO ,  Jianfeng XU ,  Chen HU ,  Yi YANG ,  Zhengzhong DU ,  Fengyan QI

    发明人： Wuzhou ZHAN ,  Dongqi WANG ,  Yongfeng TU ,  Jing WANG ,  Qing ZHANG ,  Lei MIAO ,  Jianfeng XU ,  Chen HU ,  Yi YANG ,  Zhengzhong DU ,  Fengyan QI

    IPC分类号： H04L12/56 ,  G10L11/00

    CPC分类号： G10L19/005 ,  G10L19/0204 ,  G10L19/097

    摘要： The present invention discloses a method for obtaining an attenuation factor. The method is adapted to process the synthesized signal in packet loss concealment, and includes: obtaining a change trend of a signal; obtaining an attenuation factor, according to the change trend of the signal. The present invention also discloses an apparatus for obtaining an attenuation factor. A self-adaptive attenuation factor is adjusted dynamically by using the latest change trend of a history signal by using the present invention. The smooth transition from the history data to the data last received is realized so that the attenuation speed is kept consistent between the compensated signal and the original signal as much as possible for adapting to the characteristic of various human voices.

    摘要翻译： 本发明公开了一种获得衰减因子的方法。 该方法适用于处理分组丢失隐藏中的合成信号，包括：获得信号的变化趋势; 根据信号的变化趋势获得衰减因子。 本发明还公开了一种用于获得衰减因子的装置。 通过使用本发明的历史信号的最新变化趋势来动态调整自适应衰减因子。 实现从历史数据到最后接收的数据的平滑过渡，使得尽可能地使补偿信号和原始信号之间的衰减速度保持一致，以适应各种人声的特征。

    Voice coil motor and hard disk drive with the same
    10.
    发明申请
    Voice coil motor and hard disk drive with the same 审中-公开
    音圈电机和硬盘驱动器相同

    公开(公告)号：US20090046392A1

    公开(公告)日：2009-02-19

    申请号：US11898558

    申请日：2007-09-13

    申请人： JianFeng Xu ,  YanChu Xu ,  LingJun Kong ,  LiXin Wu ,  Thao Nguyen

    发明人： JianFeng Xu ,  YanChu Xu ,  LingJun Kong ,  LiXin Wu ,  Thao Nguyen

    IPC分类号： G11B5/55

    CPC分类号： G11B5/4806 ,  G11B5/5521

    摘要： A voice coil motor for a hard disk drive includes an inner core having an inner surface, an outer plate having an inner surface, a permanent magnet, and a coil of wire. The outer plate is positioned in spaced relation to the inner core such that a gap is defined between the inner surfaces of the inner core and the outer plate. The permanent magnet is located in the gap and attached to the inner surface of the outer plate. The coil of wire wraps around the inner core to form a solenoid coil. With such structure, the stiffness of the coil is increased. The invention also discloses a disk drive with such VCM in which the coil is directly bonded to the E-block of the hard disk drive. Therefore heat conduction of the hard disk drive is improved.

    摘要翻译： 用于硬盘驱动器的音圈电动机包括具有内表面的内芯，具有内表面的外板，永磁体和线圈。 外板与内芯间隔开，从而在内芯和外板的内表面之间形成间隙。 永磁体位于间隙中并附着在外板的内表面上。 线圈卷绕在内芯上以形成电磁线圈。 通过这种结构，线圈的刚度增加。 本发明还公开了一种具有这种VCM的盘驱动器，其中线圈直接接合到硬盘驱动器的E块。 因此，提高了硬盘驱动器的热传导。