查询词典 signal

So, extract the voicing features of speech signal play an important role in speech signal processing.

因此，语音信号特征提取在语音信号处理应用中具有举足轻重的地位。

The study of spatial configuration and characteristics of pulsed-wire velocity probe shows that: the yaw-and pitch-response characteristics have a good behavior due to the asymmetrical arrangement of the prongs. Because the amplitude of sensor wire response signal changes with the flow velocity, the differentiated signal is selected to trigger a voltage comparator. The pulsing frequency is restricted to about 100Hz to allow the wire to cool between pulses. The first velocity probe with big acceptance cone has been developed in China, and the way of measuring the Reynolds normal and shear stress and application have been given in this dissertation.

对脉冲热线空间速度探针的空间结构及特性的分析表明：三根长支架平行且安置于同一平面的探针结构可以获得大的测量角和好的测量性能；由于传感丝的响应信号幅值随流速变化较大，故应采用微分法进行信号处理；对于5μm的传感丝由于散热时间基本不变，约为10ms，故脉冲发射的最高频率为100Hz；本文在国内首次研制成功了一种大测量窗的脉冲热线空间速度探针，并给出了测量雷诺应力的方法和实例。

Query signal is used to start motor. Interrupt signal is used to warm start motor.

设置了一个查询口作为步进电机的开关设置了一个中断口用来热复位电机。

This instrument generated the sine wave signal which frequency could change in three situations. The sine wave signal inputted to the buffer amplifier, then divided into two groups, a group connected with oscilloscope to survey the peak-to-peak value of fundamental wave, another group connected with wave trap to filter out the fundamental wave, then the oscilloscope was used to survey the various sub-harmonics amplitude of the output.

该仪器是通过设计可变三种频率的正弦波信号发生器产生的正弦波信号，其输出信号经过缓冲放大器，输入放大器后分为两路，一路接入示波器，测量基波幅值；另一路接入陷波器将基波滤去，再用示波器测量其输出各次谐波幅值。

With "the signal waveform editor" software develop kit , the multi-channel pulse signal with more complexity, higher accuracy and strict synchronous relation, which use for testing electronic and other devices, can be generated and output quickly and visually through various edit methods.

利用该设备，并通过"波形编辑器"软件包及其它相关硬件系统，我们能够利用多种编辑手段，快速、直观地得到并输出复杂的、高精度的、有着严格同步关系的多路脉冲信号，以用于复杂电子设备的调试和测试。

Direct digital waveform synthesizer is a digital method that the radar signal is generally generated.The error resource of DDWS is presented.The principle that signal is reconstructed in digital-to-analog converters is analyzed in the DDWS structure.

介绍了直接数字波形合成(direct digital waveform synthesizer，DDWS)的误差来源，分析了DDWS结构中其数模转换器信号重构机理，比较研究了DAC信号重构误差对输出信号脉冲压缩结果的影响。

There are three OP signals at the frequencies E5a, E5b and E2L1E1 , whereat the signal on E5a is a 10Mcps signal with 50sps data and a Pilot channel.

E5a采用10兆赫，50定位系统和1个导航渠道， E5b也是10兆赫和一个导航渠道，却是250个定位系统数据调制。

A Wavelet analysis is far superior to Fourier analysis in drawing out the signal features. Wavelet analysis has the characteristic of spatial locality, and the window wideness of the time and the frequency both can be adjusted, so it can analyze the details of a signal.

a 小波分析在信号的特征提取方面具有传统Fourier 分析无可比拟的优越性，小波分析在时频域都具有表征信号局部特征的能力，能够聚焦到信号的细节。

Firstly ,the received signal is filtered by FHN model ,and transformed by WV and Hough in turns, thus whether a signal is present in noise is determined according to whether there is a line in time-frequency picture.

首先借助FHN随机共振模型进行滤波，在此基础上进行WV和Hough变换，将信号的检测问题转换为时频图中的直线检测问题。

This course includes (1) Discrete time signal and systems,(2) Z transform,(3) Continuous-time signal sampling,(4) LTI system,(5) Discrete time systems,(6) Filter design,(7) DFT,(8) FFT.

课程内容包含：(1)离散时间信号和系统，(2) z转换，(3)连续时间信号的取样，(4)线性非时变系统的转换分析，(5)离散时间系统的结构，(6)滤波器设计技巧，(7)离散傅氏转换，(8)使用离散傅氏转换以对信号做傅氏分析。

Further more, the simplified analysis method on stressed-skin effect of corrugated steel sheet is also discussed in detail.

此外还比较详细地探讨了蒙皮效应的简化分析方法。

If I had known her telephone number,I would have called her.

要是我知道她的电话号码，我就打电话给她了。