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    • 5. 发明申请
    • METHOD AND APPARATUS FOR AUDIO CLIP CLASSIFICATION
    • 音频片段分类的方法和装置
    • WO2006132596A1
    • 2006-12-14
    • PCT/SG2005/000180
    • 2005-06-07
    • MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.ZHAO, YingCHONG, Kok SengNEO, Sua Hong
    • ZHAO, YingCHONG, Kok SengNEO, Sua Hong
    • G06F17/30G06F15/18G06N7/00G10L15/08
    • G10L25/48G06F17/30743
    • A method of classifying an audio clip into one of a plurality of predefined classes is disclosed. The method separates an audio clip into a plurality of segments, and each of the segments into a plurality of frames (102). The method then extracts Mel Frequency Cepstral Coefficients (MFCC) and Linear Prediction Cepstral Coefficients (LPCC) as the audio features from each frame within one segment (103). Segment characteristics for a segment are determined by deriving one or more measures of said audio features from each frame within the segment. Two or more Support Vector Machine (SVM) classifiers at two or more stages in a segment level classification process are utilised to determine a decision function value (104). For each segment of the audio clip, a class label is determined based on said decision function value. The decision function values of all the segments in said audio clip are mapped to associated segment confidence levels by using a sigmoid function model. Finally, post-processing (105) is performed on the classes and the confidence levels of all the segments to produce a class and associated confidence level for said audio clip (106).
    • 公开了一种将音频剪辑分类成多个预定类别之一的方法。 该方法将音频剪辑分成多个片段,每个片段分成多个帧(102)。 该方法然后从一个片段(103)内的每个帧中提取Mel频率倒谱系数(MFCC)和线性预测倒频谱系数(LPCC)作为音频特征。 通过从段内的每个帧导出所述音频特征的一个或多个测量来确定段的段特性。 利用段级别分类处理中两个或多个阶段的两个或多个支持向量机(SVM)分类器来确定决策函数值(104)。 对于音频剪辑的每个段,基于所述决策函数值确定类标签。 通过使用S形函数模型将所述音频剪辑中的所有段的决策函数值映射到相关联的段置信水平。 最后,对所有段的类和置信水平执行后处理(105)以产生所述音频剪辑(106)的类和相关置信度。
    • 6. 发明申请
    • ENERGY ABSORBENT MATERIAL
    • 能量吸收材料
    • WO2006029174A2
    • 2006-03-16
    • PCT/US2005/031767
    • 2005-09-08
    • UNIVERSITY OF WASHINGTONTAYA, MinoruURUSHIYAMA, YutaZHAO, Ying
    • TAYA, MinoruURUSHIYAMA, YutaZHAO, Ying
    • C25D3/00
    • C25D5/18C25D3/562C25D5/48Y10T428/12479
    • A method for making a ductile and porous shape memory alloy (SMA) using spark plasma sintering, and an energy absorbing structure including a ductile and porous SMA are disclosed. In an exemplary structure, an SMA spring encompasses a generally cylindrical energy absorbing material. The function of the SMA spring is to resist the bulging of the cylinder under large compressive loading, thereby increasing a buckling load that the cylindrical energy absorbing material can accommodate. The SMA spring also contributes to the resistance of the energy absorbing structure to an initial compressive loading. Preferably, the cylinder is formed of ductile, porous and super elastic SMA. A working prototype includes a NiTi spring, and a porous NiTi cylinder or rod.
    • 公开了一种使用火花等离子体烧结制造延性和多孔形状记忆合金(SMA)的方法,以及包括延性和多孔SMA的能量吸收结构。 在示例性结构中,SMA弹簧包围大致圆柱形的能量吸收材料。 SMA弹簧的功能是在大的压缩载荷下抵抗气缸的膨胀,从而增加圆柱形能量吸收材料可以容纳的屈曲载荷。 SMA弹簧还有助于能量吸收结构抵抗初始压缩载荷。 优选地,圆筒由延性,多孔和超弹性SMA形成。 工作原型包括NiTi弹簧和多孔NiTi圆筒或棒。