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    • 53. 发明授权
    • Method for estimating inter-channel delay and apparatus and encoder thereof
    • 用于估计信道间延迟的方法及其装置及其编码器
    • US08417473B2
    • 2013-04-09
    • US13245303
    • 2011-09-26
    • Wenhai WuYue LangLei MiaoZexin LiuChen HuQing Zhang
    • Wenhai WuYue LangLei MiaoZexin LiuChen HuQing Zhang
    • G01R25/04
    • H04S1/007G10L19/008G10L25/06H04S2400/09H04S2420/03
    • A method for estimating inter-channel delay and an apparatus for estimating inter-channel delay and an encoder are provided by the embodiments of the present invention. The method includes: obtaining signal sound field information from a cross-correlation function and a cumulative cross-correlation function of synthetic signals of left and right sound channels respectively; obtaining adjustment information of the cumulative cross-correlation function according to the sound field information that is respectively obtained; adjusting the cumulative cross-correlation function by using the adjustment information, so as to obtain the adjusted cumulative cross-correlation function; and determining a time corresponding to a maximum value in the adjusted cumulative cross-correlation function as an inter-channel delay. Therefore, the delay between the signals of the left and right sound channels can be estimated correctly, so as to improve the stability of the synthetic stereo sound field.
    • 通过本发明的实施例提供了一种用于估计信道间延迟的方法和用于估计信道间延迟的装置和编码器。 该方法包括:分别从互相关函数获得信号声场信息和左声道和右声道的合成信号的累积互相关函数; 根据分别获得的声场信息获得累积互相关函数的调整信息; 通过使用调整信息来调整累积互相关函数,以获得经调整的累积互相关函数; 并且将调整后的累积互相关函数中的与最大值对应的时间确定为信道间延迟。 因此,可以正确地估计左声道和右声道的信号之间的延迟,从而提高合成立体声场的稳定性。
    • 54. 发明申请
    • Method, Device And System For Signal Encoding And Decoding
    • 用于信号编码和解码的方法,装置和系统
    • US20110286549A1
    • 2011-11-24
    • US13210127
    • 2011-08-15
    • Chen HuZexin LiuLei MiaoLongyin ChenQing ZhangWei XiaoHerve Marcel Taddei
    • Chen HuZexin LiuLei MiaoLongyin ChenQing ZhangWei XiaoHerve Marcel Taddei
    • H04L27/00
    • G10L21/00G10L19/24
    • A method, device and system for signal encoding and decoding, the method comprising: encoding a core layer signal to obtain a core layer signal code; selecting an enhancement sample point that requires enhancement layer signal encoding according to the core layer signal code and the number of bits that can be used by an enhancement layer; obtaining an enhancement layer signal code of the enhancement sample point; and outputting a bit stream, where the bit stream includes the core layer signal code and the enhancement layer signal code. In embodiments of the present invention, according to the number of bits that can be used by the enhancement layer, the enhancement sample point that requires enhancement layer signal encoding is selected; the enhancement layer signal of the selected enhancement sample point is encoded and decoded; when no sufficient bits are available for the enhancement layer, the enhancement quality of the core layer can be improved.
    • 一种用于信号编码和解码的方法,装置和系统,所述方法包括:对核心层信号进行编码以获得核心层信号码; 选择需要根据核心层信号码的增强层信号编码和增强层可以使用的位数的增强采样点; 获得增强采样点的增强层信号码; 并输出比特流,其中比特流包括核心层信号码和增强层信号码。 在本发明的实施例中,根据增强层可以使用的比特数,选择需要增强层信号编码的增强采样点; 所选择的增强采样点的增强层信号被编码和解码; 当没有足够的比特可用于增强层时,可以提高核心层的增强质量。
    • 56. 发明授权
    • Decoding method and device
    • 解码方法和设备
    • US08447622B2
    • 2013-05-21
    • US12427848
    • 2009-04-22
    • Jianfeng XuLijing XuQing ZhangWei LiShenghu SangZhengzhong Du
    • Jianfeng XuLijing XuQing ZhangWei LiShenghu SangZhengzhong Du
    • G10L19/00G10L19/14
    • G10L19/005
    • A decoding method and device are provided. The spectrum parameter of a current bad data frame is determined. Specifically, a number of continuous bad frames that occur currently is determined. A spectrum parameter of a good data frame before the current bad data frame is determined. And a constant mean value of a spectrum parameter is determined. Then, the spectrum parameter of the good data frame is adaptively shifted towards the constant mean value of the spectrum parameter according to the number of the continuous bad data frames to calculate and obtain spectrum parameter information of the current bad frame. When the continuous bad data frames occur, the relevance between the spectrum parameter of the nearest good frame and the spectrum parameter of the current bad frame is gradually reduced, so that more accurate spectrum parameter of the current bad data frame can be obtained, thereby obtaining a better speech quality under a same code rate and a same frame error rate.
    • 提供了一种解码方法和装置。 确定当前不良数据帧的频谱参数。 具体地,确定当前发生的多个连续的坏帧。 确定当前不良数据帧之前的良好数据帧的频谱参数。 并确定频谱参数的恒定平均值。 然后,根据连续不良数据帧的数量,将良好数据帧的频谱参数自适应地偏移到频谱参数的常数平均值,以计算并获得当前坏帧的频谱参数信息。 当发生连续不良数据帧时,最近好帧的频谱参数与当前不良帧的频谱参数之间的相关性逐渐减小,从而可以获得当前不良数据帧的更准确的频谱参数,从而获得 在相同的码率和相同的帧错误率下,更好的语音质量。
    • 59. 发明授权
    • System and method for implementing sliding input of text based upon on-screen soft keyboard on electronic equipment
    • 基于电子设备上的屏幕软键盘实现文本滑动输入的系统和方法
    • US09182831B2
    • 2015-11-10
    • US14110817
    • 2011-04-09
    • Haichao XieQing ZhangQi He
    • Haichao XieQing ZhangQi He
    • G06F3/023G06F3/0488
    • G06F3/0237G06F3/04883G06F3/04886G06F2203/04808
    • A system for implementing the sliding input of a text based upon an on-screen soft keyboard on an electronic equipment is provided, and the system comprises a feature lexicon module, a feature lexicon establishment module, a user interface module, a sliding trajectory feature extraction module, a rough classifying and filtering module, a rough matching and filtering module and an accurate matching and sorting module. A method for implementing the sliding input of a text based upon an on-screen soft keyboard on an electronic equipment according to the system is also provided. The system and the method for implementing the sliding input of a text based upon an on-screen soft keyboard on an electronic equipment not only can ensure a speed, but also can input a word according to the preorder trajectory of the input portion, and cleverly use a forecasting-between-slidings input, decrease a sliding distance, effectively improve the input speed and accuracy of words, reduce the operation complexity of users, which realize a simple implementation process, convenient and fast utilization, stable and reliable working performance and an extensive applicable scope, bringing the work and life of people huge convenience.
    • 提供了一种基于电子设备上的屏幕上的软键盘来实现文本的滑动输入的系统,该系统包括特征词典模块,特征词典建立模块,用户界面模块,滑动轨迹特征提取 模块,粗略分类和过滤模块,粗略匹配和过滤模块以及精确的匹配和排序模块。 还提供了一种在根据系统的电子设备上实现基于屏幕上的软键盘的文本的滑动输入的方法。 用于实现基于电子设备上的屏幕上的软键盘的文本的滑动输入的系统和方法不仅可以确保速度,而且还可以根据输入部分的预订轨迹并且巧妙地输入单词 使用滑动预测输入,减少滑动距离,有效提高字的输入速度和精度,降低用户的操作复杂度,实现简单的实施过程,方便快捷的利用,稳定可靠的工作性能和 广泛的适用范围,为人们的工作和生活带来了巨大的便利。