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- Discrete Fourier Transform (DFT) is a powerful mathematical tool to calculate signal frequency spectrum from sampled data, but it is not very suitable for the real-time processing circumstance because of its large amount of calculation. 离散傅里叶变换(DFT)是利用采样数据计算信号的频谱的一种数学工具,其计算量较大,难以用于在线实时频谱分析。
- Multi- class Double Frequency Circuit and Signal Frequency Spectrum 多级倍频电路与信号频谱
- A filter whose transfer function is matched with the frequency spectrum function of input signal. 其传递函数与输入信号的频谱函数相匹配的一种滤波器。
- An Experimental Study of Signal Frequency Spectrum Analysis on Virtual Instruments 信号频谱虚拟分析的实验研究
- The Simulation for Signal Frequency Spectrum Analysis Based on Fast Fourier Transforms 基于快速傅立叶变换的信号频谱分析仿真
- signal frequency spectrum 信号频谱
- A system that divides the frequency spectrum of a signal into a number of bands, which are separately transmitted and then recombined. 一种先将一个信号的频谱分成几个可独立传送的频带然后再合成的方法。
- 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。
- Alters the frequency spectrum of signals passing through it. 当通过它时能够改变信号的频谱。
- The Time Domain Wave Form and Frequency Spectrum of Modulated Signal of uexp( tt/ Pw) Multiply by Carrier with Uniform Phase Noise. 单边递减波电压讯号乘上含有均匀相位杂讯载波之调变讯号时域波形及频谱。
- Frequency Spectrum Measurement of Noise of Image Intensifiers[J]. 引用该论文 钱芸生;常本康;童默颖;刘磊.
- The inverted frequency spectrum,in fact, is Fouriers retransform. 倒频谱是频域信号的傅里叶再变换。
- The Time Domain Wave Form and Frequency Spectrum of Signal Tria(tt/Pw) Multiply by Normal Noise. 三角波电压讯号乘上准常态杂讯之时域波形及频谱。
- The Time Domain Wave Form and Frequency Spectrum of Modulated Signal of Rect(tt/Pw) Added by Uniform Noise. 方波电压讯号加上均匀杂讯乘以无杂讯载波之调变讯号时域波形及频谱。
- The Time Domain Wave Form and Frequency Spectrum of Signal eexp(2*tt/Pw) Added by Uniform Noise. 双边递减波电压讯号加上均匀杂讯之时域波形及频谱。
- The restrain method of DFT frequency spectrum leakage base on signal symmetry extension is proposed in this paper, experimental results show that this method is effective. 提出一种利用信号对称拓展技术抑制离散傅立叶变换频谱泄漏的方法，实验证明是一种有效的方法。
- It has the antijamming and anti-multi-diameter ability, the frequency spectrum use factor is high, signal hiding and so on a series of merits. 它具有抗干扰和抗多径能力强,频谱利用率高,信号隐蔽等一系列优点。
- 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。
- The Time Domain Wave Form and Frequency Spectrum of Modulated Signal of Tria(tt/Pw) Multiply by Carrier with Normal Phase Noise. 三角波电压讯号乘上含有准常态相位杂讯载波之调变讯号时域波形及频谱。
- The frequency spectrum of an actual FM signal has components extending out to infinite frequency, although they become negligibly small beyond a point. 在模拟应用中，载波的频率跟随输入信号的幅度直接成等比例变化。在数字应用领域，载波的频率则根据数据序列的值作离散跳变，即所谓的频率键控。
