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This designing would do low wave filtering and DFT process ,so as to estimate the frequence of the signal.. Therefor the system can change it's sample cycle according the signal frequence. 本测量系统对待测信号进行采样后，作数字低通滤波和DFT运算以估算其频率，从而根据信号频率灵活调整采样周期，能够工作在很宽的频率范围内。
In pulse code modulation,a spurious signal formed from beats between the signal frequency and the sample frequency. 在脉冲编码调制中,信号频率和取样频率之间的差拍所引起的伪信号。
This instrument can measure AC signal frequency either of the single phase voltage or of the tri-phase voltage. 本表既可测交流单相电压信号之频率,亦可测交流三相电压信号之频率。
The high permeability of the ferromagnetic reeds in a reed relay causes a pronounced skin effect with increasing signal frequency. 干簧式继电器中铁磁簧片的高磁导率会随信号频率的增加而产生很强的趋肤效应。
In pulse code modulation, a spurious signal formed from beats between the signal frequency and the sample frequency. 在脉冲编码调制中,信号频率和取样频率之间的差拍所引起的伪信号。
It has sharp impedance characteristics at desirable frequency and it does affect the signal frequency. 在某一频率区域内，其阻抗值急剧上升，从而在特定的频率内可获得较高的衰减速效果而对信号不产生影响。
A false signal in telecommunication links from beats between signal frequency and sampling frequency. 假信号信号频率和取样频率之间的拍子在无线电通信线路产生的假信号。
The method tracks signal frequency by LMS algorithm and analyses the phase of output signal. 通过采用最小均方误差自适应滤波算法 ,跟踪信号的单一频率 ,分析输出信号的包络 ,实现PCM/FSK信号的解调。
Long cable lengths and high signal frequencies contribute to greater signal attenuation. 长缆线长度和高讯号频率产生较大的讯号衰减。
They can also be helpful if the original signal frequency does not fit in the DUT testing frequency. 如果原始信号频率不适合于DUT的测试频率，信号滤波也非常有用。
If the signal frequency to be measured is low, wide strobe gate is required for high measurement precision. 当被测信号频率较低时，需要很宽的选通门才能得到较高的测量精度。
The experiment shows that AWG has wide signal frequency band and high resolution. 实验表明，此波形发生器产生的信号频率范围广，分辨率高，具有一定的实用价值。
The output signal can be converged normally when the designed frequency departs the input signal frequency by 20%. 当设置的初始频率偏离输入信号频率20%25时,输出信号仍可以正常收敛。
As the addition of signal frequency, oscillograph will drop to demonstrating ability correctly of signal. 跟着信号频率的增添，示波器对信号的正确显示能力将回升。
In communications, the range of signal frequencies that can be satisfactorily transmitted on a given channel, e. g. the passband on voice grade channels is 300 3000Hz. 在通信技术中,在一个给定信道上可以满意地传输信号的频率范围。例如话音级信道上通频带为300-3000赫兹。
While turning on off the LCD, in few cases, the signal frequency of the VGA card will affect the LCD and cause interference. 在极少的情况下,萤幕会出现干扰杂纹,。这种情况可能是VGA卡的讯号卡的讯号频率所造成,属于正常现象。
The relationship between acoustic signal frequency and beam diamter, which is inconsistent with the results of work[7. 8],is meassured to be f= Cs/2d. 声信号频率与束直径的关系为f=(C_s)/(2d),它不同于工作的结果。
A red light is usually a signal of danger. 红灯通常是危险的信号。
The technology of direct digital frequency synthesis(DDS),is a new typed synthesizer technology and signal frequency methods. 直接数字频率合成技术,即DDS,是一种新型的频率合成技术和信号产生方法。
In this paper,a new method of motor fault signal frequency pursuitting based on marginal spectrum of Hilbert-Huang transform(HHT) was presented. 提出了将HHT变换(Hilbert-HuangTransform,简称HHT)中边际谱应用于电机故障信号频率跟踪研究的新方法。