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    • 5. 发明授权
    • Data conversion method, data converter, and program storage medium
    • 数据转换方法,数据转换器和程序存储介质
    • US06281814B1
    • 2001-08-28
    • US09485042
    • 2000-02-01
    • Hideki SasaokaHirohiko KazatoTakashi Noma
    • Hideki SasaokaHirohiko KazatoTakashi Noma
    • H03M700
    • G06F17/148
    • A peak detecting section 121 detects the maximum values (peaks) of frequency distributions, at intervals of unit times, from the wavelet intensity signal output from an intensity computing section 113. More specifically, giving attention to frequency distributions of the wavelet intensity signal as the transform result obtained by a signal converting section 110 at predetermined time intervals, the peak detecting section 121 detects the peaks (maximum values) of the frequency intensity distributions at intervals of unit times (predetermined time intervals). Changes in various frequency features over time which are contained in the time-series signal obtained by a wavelet transform of the time-series signal can be quantitatively grasped more accurately.
    • 峰值检测部分121从强度计算部分113输出的小波强度信号中以单位时间间隔检测频率分布的最大值(峰值)。更具体地,注意小波强度信号的频率分布为 以预定的时间间隔变换由信号转换部分110获得的结果,峰值检测部分121以单位时间(预定时间间隔)的间隔检测频率强度分布的峰值(最大值)。随时间变化的各种频率特征 被包含在通过时间序列信号的小波变换获得的时间序列信号中,可以更精确地定量地掌握。