In this paper the zoom fast DFT computative method of the time-limited signal is given.
本文给出时限信号的细化变换算法。
In the a high frame rate (HFR) ultrasonic imaging system, the weighting process by limited diffraction beams on echo signal takes the most of the calculation time for constructing an image.
在高帧率超声成像算法中，对回波信号进行有限衍射波束加权处理占用了成像中大部分计算时间。
Besides designing and selecting waveforms, in order to acquire high time bandwidth product, it is the major practical method to increase the bandwidth of the signal with limited time duration.
除了对波形本身的设计和选择，设法增大有限时宽信号的带宽，是实际获得大时带积脉压信号的主要手段。
The effects of the Jibbs'phenomenon and the phase property of the digital filter on the edges of cutoff signal with limited time domain after filtered is studied.
研究了截断信号边界的“吉布斯”现象及数字滤波器相位特性对有限区间信号滤波处理的影响。
Time-frequency distribution(TFD) of multi-component signal can produce cross-components, TFD with fixed kernels perform well only for limited signals.
多分量信号的时频分布会产生交叉项，采用固定核函数的时频分布，其适用的信号形式有很大的局限性。
UST real time signal process system is called signal extraction system. It can increase signal noise ratio through synchronization and average and limited pulse response filtering.
称为信号析取系统的超声波检验实时信号处理系统，它通过同步平均和有限脉冲响应滤波能够提高信噪比。
However, extending the upper frequency of such function signal generator is limited by the read-out time of the memory and the conversion rate of the digital-to-analog converter.
可是，这种信号发生器的上限频率的提高受存储器的读取时间和数模转换器的转换速度的限制。为了提高数字法函数信号发生器的上限频率，我们提出了用分布存储式数字法生成函数信号。
Tow base-band IJF pulse signal have been researched: the time-limited double-code rise cosine pulse and the time-limited double-code triangle pulse.
研究了两种基带IJ F脉冲信号：双码元间隔升余弦脉冲以及双码元间隔三角脉冲，并对它们的性能参数作了比较。
As a result, a time-critical response during signal processing is limited just to the accumulator stage which is currently processing the data word.
因此，在信号处理期间对时间要求严格 的响应仅仅限于当前对数据字进行处理的累加器级。
As a result, a time-critical response during signal processing is limited just to the accumulator stage which is currently processing the data word.
因此，在信号处理期间对时间要求严格 的响应仅仅限于当前对数据字进行处理的累加器级。
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