The auto power spectrum of phase function commonly has two extreme frequencies, and the corresponding frequency components decide the peak characteristics of phase function.
相函数的自功率谱一般具有两个峰值频率，其相应的频率分量决定相函数的波峰特征。
Other characteristics, such as frequency, wave shape, and phase balance are seldom recognized by the consumers but are given constant attention by the electric power utility engineers.
而其它方面的特性，如频率、电压波形、各相平衡则很少被用户认识到，但这恰恰受到电力部门工程师们的时刻关注。
The quantitative relationship between filtering parameters and amplitude-frequency and phase shift characteristics is analysed theoretically in this paper.
本文从理论上分析了滤波参数与幅频特性和相移特性的定量关系。
The approach is to use short-time analysis to extract the characteristics of time-varying amplitude, frequency and phase in a digital modulation signal, and applies them for simple identification.
该方法用短时分析提取数字调制信号在幅度、频率和相位随时间变化的特征，并利用这些特征对各种数字调制信号进行识别。
By theory analysis of divider transfer function of magnitude-frequency characteristics and phase-frequency characteristics, a new method equalizing stray capacitance could be conclude.
并且通过对分压器传递函数的相频和幅频特性进行理论分析，提出一种分布电容补偿的方法。
Their food materials and food Category circulate each other, their Frequency of communication and degree display the Phase characteristics of The Times.
唐时期的三大文化区间食物原料与食品品种互通有无，饮食文化交往频率和程度具有阶段性时代特征。
A method for measuring the phase characteristics of ultrahigh frequency modulating light by optical phase shift is proposed. It has the properties of high precision and strong practicability.
提出采用光学移相办法测量超高频调制光相位特性的一种方法。它具有精度高、实用性强等特点。
This scheme uses smooth wave instead of discontinuous wave, so the wave in time field is continuous phase and has good frequency spectrum characteristics.
该方案用平滑的波形来替换前后码元的不连续跳变，从而得到相位连续的时域波形，波形平滑、频谱主瓣窄、滚降速度快。
The study on speech signal formant abstracted by LPC shows that it can also be abstracted by adopting phase-frequency characteristics and logarithmic amplitude-frequency characteristics.
通过对LPC(线性预测编码)方法提取语音信号共振峰进行的研究表明，采用相-频特性与对数幅-频特性同样能提取语音信号共振峰。
The vibration were measured using capacitance-detecting technology to get the amplitude-frequency and phase-frequency characteristics.
用电容检测技术测量其振动信号，以获得传感器幅频、相频特性。
Design a synthesizer based on DDS, whose characteristics are fast frequency change speed, high resolution and low phase noise et al.
并以DDS为核心设计了接收机的细扫本振，该本振具有变频速度快、分辨率高、相噪指标高等特点。
The Genetic Algorithm(GA) is used to optimize the pole-zero location in all-pass networks of 30 and 60 relative phase-shift, and good phase-frequency characteristics are obtained.
然后利用遗传算法分别对30和60十倍频宽带相对相移网络的零极点参数值进行了优化，得到了较好的相位频率特性结果；
The Genetic Algorithm(GA) is used to optimize the pole-zero location in all-pass networks of 30 and 60 relative phase-shift, and good phase-frequency characteristics are obtained.
然后利用遗传算法分别对30和60十倍频宽带相对相移网络的零极点参数值进行了优化，得到了较好的相位频率特性结果；
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