Traditional FFT can effectively analyze the sinusoidal signal, but the very big error exists for analyzing the similar frequency sinusoidal signal.
传统的快速傅里叶变换（FFT）可以有效地对正弦信号进行分析，但对于分析频率相近的正弦信号却存在很大的误差。
By the method of looking up table, the sinusoidal signal can produce little periodic signal, which is difficult for the previous signal generators.
正弦信号采用查表的方法，解决了以往信号发生器无法产生小周期正弦信号的难题。
This design construct an sinusoidal signal generator based on DDS(Direct Digital Frequency Synthesis), completed by MCU AT89S52 and necessary analog circuit.
本设计采用AT89S52单片机，辅以必要的模拟电路，实现了一个基于直接数字频率合成技术（DDS）的正弦信号发生器。
Fourier Transform, the most classical signal processing analysis method, is ideal for the calculation of magnitude of sinusoidal signals in their steady state.
作为最经典的信号处理手段的傅立叶分析，对被分析信号的幅值变化相当的敏感。
According to the measurement method, feeding a rf sinusoidal signal at location of interference source, so this signal is radiated by electrified railway system.
此方法从干扰源处——接触网与受电弓之间馈入高频信号，由电气化铁道系统辐射出去进行测量。
The sensor element is constructed by a one-port SAW resonator and a delay line. The input signal is an interval sinusoidal signal and its response is an oscillating signal.
该传感单元由单端口谐振器和延迟线组成，激励信号采用间歇正弦脉冲串信号。
The theories of the sample integral and the cross - mutuality for the sinusoidal signal phase difference estimation are analyzed, and the digital simulation experiment is carried out.
对正弦信号相位差估计的取样积分和互相关两种方法的理论进行了分析，并进行了数字仿真实验。
Sinusoidal signal generator sinusoidal signal of the main circuit and systems used to measure the frequency characteristics of the nonlinear distortion, and gain sensitivity and so on.
正弦信号发生器正弦信号主要用于测量电路和系统的频率特性、非线性失真、增益及灵敏度等。
Theoretical analysis and experimental results show that the amplitude and frequency of the output light intensity are linearly related to that of the sinusoidal signal voltage applied on PZT.
理论分析和实验结果表明，干涉仪输出光强的幅度和频率与施加在压电陶瓷上的交变信号电压的幅度和频率有关，且在一定的条件范围内呈良好的线性关系。
The output signal of the sensor is the sinusoidal signal with intermediate frequency. To sample and process this signal, a data collection circuit that centers on P89C51RD2 single chip is designed.
传感器输出的检测信号是中频的正弦电压信号，为采集和处理该信号，设计了以P89C51RD2单片机为核心的数据采集器电路。
If the nonlinear element has a single output and multiple input values, the output signal is taken to be sinusoidal and the inputs contain harmonics.
对于非线性元件的输出为单值而输入有多值的情况，令输出为正弦信号，输入包含有各次谐波。
Compared with ideal template signal, sinusoidal template signal is robust, and easy to realize.
与理想模板信号相比。正弦模板具有鲁棒性强、实现简单的优点。
Using hardware digital synthesis method, the signal source generates three phase sinusoidal voltage and current signal.
该信号源中采用硬件数字合成的办法产生三相电压与三相电流信号正弦波。
The sinusoidal representation of speech signal and a cochlear model are used to extract speech parameters in this paper, and a speech analysis/synthesis system is developed using the model.
本文采用语音信号的正弦表示方法并利用耳蜗模型提取了语音信号的基本特征参数，建立了一个语音分析／合成系统。
To give further bit reduction of the redundancy between signal frames, a novel Sinusoidal Tracking Coding algorithm has been proposed.
为了进一步降低码率，提出了减少信号帧间冗余信息的轨迹编码方法，同时引入了解码端频域无相位综合算法。
As an adaptive algorithm of signal decomposition, matching pursuits provides a new framework for sinusoidal modeling of speech and audio signal.
匹配跟踪作为一种自适应的信号分解算法，为语音和音频正弦建模提供了一个新的框架。
To reduce certain sinusoidal frequency components in a signal in amplitude, digital filtering is done.
为了减少在信号幅度上一定的正弦信号部分的频率，数字滤波器应运而生了。
The paper aimed at the adoption of the IGBT SPWM (Sinusoidal Pulse Width Modulation) signal source and IGBT test system research for the production of IGBT manufacturer to provide testing methods.
本文旨在通过对IGBT的SPWM信号源及IGBT测试系统的研究，为生产IGBT的厂家提供可借鉴的测试方法。
RL circuit is taken into consideration, in which the transient current signal includes a period component varying in sinusoidal waveform and a non-period component varying in exponential waveform.
该算法考虑了RL电路中的暂态电流，假设暂态电流含有一个按正弦规律变化的周期分量和一个按指数规律变化的非周期分量。
In spectral resolution enhancement the linear prediction of exponentially decaying sinusoidal superposition signal is one of the key technologies.
在光谱成像的光谱分辨率增强技术中，对振幅衰减干涉信号的线性预测是其中的关键之一。
The equation shows that the magnetic induction intensity is a sinusoidal oscillation signal and its amplitude is a damped exponential law.
公式表明，电磁成形时磁感应强度正弦震荡，幅值呈指数规律衰减。
Filtering out sinusoidal components of the signal that occur at frequencies that cannot be produced by the music itself results in recording the music with little wind and rain noise.
滤除非音乐自己产生的那些频率的信号的正弦部分能够使记录的音乐中几乎没有风和雨的噪声。
The phase signal of the surface profile is detected from the sinusoidal phase-modulating interference signal using a real-time phase detection circuit.
利用实时相位检测电路，从正弦相位调制干涉信号中解出被测量物体表面形貌的相位。
The phase signal of the surface profile is detected from the sinusoidal phase-modulating interference signal using a real-time phase detection circuit.
利用实时相位检测电路，从正弦相位调制干涉信号中解出被测量物体表面形貌的相位。
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