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    • 81. 发明申请
    • Time/Frequency Two Dimension Post-processing
    • 时间/频率二维后处理
    • US20110257979A1
    • 2011-10-20
    • US13086905
    • 2011-04-14
    • Yang Gao
    • Yang Gao
    • G10L19/00
    • G10L19/26G10L19/0212
    • In accordance with an embodiment, a time-frequency post-processing method of improving perceptual quality of a decoded audio signal, the method includes determining a time-frequency representation (such as filter bank analysis and synthesis) of an audio signal, estimating a time-frequency energy distribution of an audio signal from a time-frequency filter bank, computing a modification gain for each time-frequency representation point to have a modified time-frequency representation, and outputting audio signal from a modified time-frequency representation.
    • 根据实施例,提供一种改善解码音频信号的感知质量的时间频率后处理方法,该方法包括确定音频信号的时间 - 频率表示(诸如滤波器组分析和合成),估计时间 对来自时间频率滤波器组的音频信号进行频率能量分配,计算每个时间频率表示点的修改增益以具有修改的时间频率表示,以及从经修改的时间频率表示输出音频信号。
    • 82. 发明授权
    • Embedded silence and background noise compression
    • 嵌入式静音和背景噪声压缩
    • US08032359B2
    • 2011-10-04
    • US12002131
    • 2007-12-14
    • Eyal ShlomotYang GaoAdil Benyassine
    • Eyal ShlomotYang GaoAdil Benyassine
    • G10L21/00G10L11/06
    • G10L19/24G10L19/012G10L19/0208
    • There is provided a method for use by a speech encoder to encode an input speech signal. The method comprises receiving the input speech signal; determining whether the input speech signal includes an active speech signal or an inactive speech signal; low-pass filtering the inactive speech signal to generate a narrowband inactive speech signal; high-pass filtering the inactive speech signal to generate a high-band inactive speech signal; encoding the narrowband inactive speech signal using a narrowband inactive speech encoder to generate an encoded narrowband inactive speech; generating a low-to-high auxiliary signal by the narrowband inactive speech encoder based on the narrowband inactive speech signal; encoding the high-band inactive speech signal using a wideband inactive speech encoder to generate an encoded wideband inactive speech based on the low-to-high auxiliary signal from the narrowband inactive speech encoder; and transmitting the encoded narrowband inactive speech and the encoded wideband inactive speech.
    • 提供了一种由语音编码器用于对输入语音信号进行编码的方法。 该方法包括接收输入语音信号; 确定所述输入语音信号是否包括活动语音信号或无效语音信号; 低通滤波无效语音信号以产生窄带无效语音信号; 高通滤波无效语音信号以产生高频带无效语音信号; 使用窄带无源语音编码器对窄带无源语音信号进行编码,以生成编码窄带无效语音; 基于窄带无效语音信号,由窄带无源语音编码器生成低到高的辅助信号; 使用宽带无源语音编码器对高频带无效语音信号进行编码,以根据来自窄带无源语音编码器的低到高辅助信号产生编码的宽带无效语音; 以及发送编码的窄带无效语音和编码的宽带无效语音。
    • 83. 发明授权
    • Gain quantization system for speech coding to improve packet loss concealment
    • 增加用于语音编码的量化系统,以改善分组丢失隐藏
    • US08000961B2
    • 2011-08-16
    • US11942102
    • 2007-11-19
    • Yang Gao
    • Yang Gao
    • G10L15/26
    • G10L19/083G10L19/005
    • In order to recover the excitation energy quickly and keep the adaptive excitation contribution percentage in the entire excitation after bit-stream packet loss, the two excitation gains (Gp 305 and Gc 306) can be first transformed into the two other special parameters: one is the entire excitation energy and another is the energy ratio of the adaptive excitation contribution portion relative to the entire excitation energy. Then, the transformed parameters are quantized and sent to decoder. At the decoder side, the quantized parameters are transformed back to the original form of the gains (Gp 305 and Gc 306).
    • 为了快速恢复激发能量,并在位流分组丢失后,在整个激励中保持自适应激励贡献百分比,可以将两个激励增益(Gp 305和Gc 306)首先转换为另外两个特殊参数:一个是 整个激发能量,另一个是自适应激励贡献部分相对于整个激发能量的能量比。 然后,将变换的参数量化并发送到解码器。 在解码器侧,量化的参数被转换回增益的原始形式(Gp 305和Gc 306)。
    • 85. 发明授权
    • Pitch prediction for use by a speech decoder to conceal packet loss
    • 用于语音解码器隐藏丢包的间距预测
    • US07869990B2
    • 2011-01-11
    • US12287456
    • 2008-10-08
    • Yang Gao
    • Yang Gao
    • G10L11/04
    • G10L19/005G10L19/09
    • There is provided a pitch lag predictor for use by a speech decoder to generate a predicted pitch lag parameter. The pitch lag predictor comprises a summation calculator configured to generate a first summation based on a plurality of previous pitch lag parameters, and a second summation based on a plurality of previous pitch lag parameters and a position of each of the plurality of previous pitch lag parameters with respect to the predicted pitch lag parameter; a coefficient calculator configured to generate a first coefficient using a first equation based on the first summation and the second summation, and a second coefficient using a second equation based on the first summation and the second summation, wherein the first equation is different than the second equation; and a predictor configured to generate the predicted pitch lag parameter based on the first coefficient and the second coefficient.
    • 提供了一个音调滞后预测器,用于由语音解码器使用以产生预测的音调滞后参数。 音调滞后预测器包括一个求和计算器,其被配置为基于多个先前音调滞后参数产生第一和,以及基于多个先前音调滞后参数和多个先前音调滞后参数中的每一个的位置的第二求和 相对于预测的音调滞后参数; 系数计算器,其被配置为使用基于所述第一求和和所述第二求和的第一等式来生成第一系数,以及使用基于所述第一求和和所述第二求和的第二等式来生成第二系数,其中所述第一等式不同于所述第二等式 方程; 以及预测器,被配置为基于所述第一系数和所述第二系数来生成所述预测音调滞后参数。
    • 88. 发明授权
    • Phenylanine derivatives
    • 苯胺衍生物
    • US07825216B2
    • 2010-11-02
    • US11749499
    • 2007-05-16
    • Terrence R. Burke, Jr.Yang GaoZhu-jun YaoDajun Yang
    • Terrence R. Burke, Jr.Yang GaoZhu-jun YaoDajun Yang
    • C07K2/00
    • C07K5/0819A61K38/00C07C271/22C07D265/32C07K5/0812C07K5/0827
    • The present invention provides phenylalanine derivatives that inhibit SH2 domain binding with a phosphoprotein. These derivatives include compounds of the formula: W—Y-(AA)n-Z wherein n is 0 to 15; Y is a phenylalanyl radical having a phenyl ring, an amine end, and a carboxyl end, the phenyl ring having one or more substituents, e.g., hydroxyl, carboxyl, formyl, carboxyalkyl, carboxyalkyloxy, dicarboxyalkyl, dicarboxyalkyloxy, dicarboxyhaloalkyl, dicarboxyhaloalkyloxy, and phosphonoalkyl, or phosphonohaloalkyl; W is a moiety attached to the nitrogen of Y and is, e.g., alkylcarbonyl, oxalyl, alkylaminooxalyl, arylaminooxalyl, arylalkylaminooxalyl, or alkoxyoxalyl; AA is an amino acid, the amine end of which is attached to the carboxyl end of Y; and Z is an arylalkylamino or arylheterocyclyl alkylamino; or a salt thereof; with the proviso that W is not arylalkylamino when the phenyl ring of phenylalanyl contains a phosphonoalkyl or phosphonohaloalkyl substituent at a position para to the alkylamido group and the ortho and meta positions are unsubstituted. The present invention further provides precursors suitable for preparing the phenylalanine derivatives and a method for the preparation of the precursors. The present invention further provides conjugates comprising a precursor and a conjugant that are covalently linked. These conjugates have biological and/or pharmacological properties.
    • 本发明提供抑制与磷蛋白结合的SH2结构域的苯丙氨酸衍生物。 这些衍生物包括下式的化合物:其中n为0至15的W-Y-(AA)n-Z; Y是具有苯环,胺末端和羧基端的苯丙氨酰基,苯环具有一个或多个取代基,例如羟基,羧基,甲酰基,羧基烷基,羧基烷氧基,二羧基烷基,二羧基烷氧基,二羧基卤代烷基,二羧基卤代烷氧基和膦酰基烷基 ,或膦酰卤代烷基; W是连接到Y的氮的部分,例如烷基羰基,草酰基,烷基氨基草酰基,芳基氨基草酰基,芳基烷基氨基草酰基或烷氧基草酰基; AA是氨基酸,其末端连接到Y的羧基末端; Z是芳基烷基氨基或芳基杂环基烷基氨基; 或其盐; 条件是当苯丙氨酰基的苯环在烷基酰氨基的对位位置含有膦酰基烷基或膦酰卤代烷基取代基时,W不是芳烷基氨基,邻位和间位是未取代的。 本发明还提供适用于制备苯丙氨酸衍生物的前体和前体的制备方法。 本发明进一步提供包含共价连接的前体和共轭物的缀合物。 这些缀合物具有生物学和/或药理学性质。
    • 89. 发明申请
    • Open-Loop Pitch Track Smoothing
    • 开环曲线平滑
    • US20100241424A1
    • 2010-09-23
    • US12224003
    • 2006-10-27
    • Yang Gao
    • Yang Gao
    • G10L11/04
    • G10L25/90
    • There is provided a speech encoder for performing an algorithm that comprises obtaining (205) a plurality of open-loop pitch candidates from a current frame of a speech signal, the plurality of open-loop pitch candidates including a first open-loop pitch candidate and a second open-loop pitch candidate; obtaining (205) a voicing information from one or more previous frames; and selecting (280) one of the plurality of open-loop pitch candidates as a final pitch of the current frame using the voicing information from the one or more previous frames. In one aspect, the voicing information from the one or more previous frames includes a previous pitch of the one or more previous frames. In a further aspect, selecting the final pitch of the current frame includes selecting (210) an initial open-loop pitch from that has the maximum long-term correlation value.
    • 提供了一种用于执行算法的语音编码器,该算法包括从语音信号的当前帧获得(205)多个开环音调候选,所述多个开环音调候选包括第一开环音调候选和 第二个开环音调候选者; 从一个或多个先前帧获取(205)发声信息; 以及使用来自所述一个或多个先前帧的所述语音信息来选择(280)所述多个开环音调候选中的一个作为所述当前帧的最终音调。 在一个方面,来自一个或多个先前帧的发音信息包括一个或多个先前帧的先前音调。 在另一方面,选择当前帧的最终音调包括从具有最大长期相关值的初始开环音调中选择(210)。
    • 90. 发明申请
    • Adding Second Enhancement Layer to CELP Based Core Layer
    • 添加第二增强层到基于CELP的核心层
    • US20100070269A1
    • 2010-03-18
    • US12559562
    • 2009-09-15
    • Yang Gao
    • Yang Gao
    • G10L11/04G10L19/00H04L12/66H04W4/00
    • G10L19/04G10L19/24
    • In an embodiment, a method of transmitting an input audio signal is disclosed. A first coding error of the input audio signal with a scalable codec having a first enhancement layer is encoded, and a second coding error is encoded using a second enhancement layer after the first enhancement layer. Encoding the second coding error includes coding fine spectrum coefficients of the second coding error to produce coded fine spectrum coefficients, and coding a spectral envelope of the second coding error to produce a coded spectral envelope. The coded fine spectrum coefficients and the coded spectral envelope are transmitted.
    • 在一个实施例中,公开了一种发送输入音频信号的方法。 编码具有具有第一增强层的可扩展编解码器的输入音频信号的第一编码错误,并且在第一增强层之后使用第二增强层对第二编码错误进行编码。 编码第二编码误差包括对第二编码误差的精细频谱系数进行编码以产生编码的精细频谱系数,以及对第二编码误差的频谱包络进行编码以产生经编码的频谱包络。 发送编码的精细频谱系数和编码的频谱包络。