查询词典 frequency modulation

In response to signals and system simulation studies, MATLAB also demonstrated its strong role, with MATLAB simulation for the time signal convolution, discrete, continuous LIT system of time-domain analysis, synthesis and periodic signal of decomposition, the bi-frequency system Domain analysis, signal modulation and demodulation, discrete systems, the Z-domain analysis.

在信号与系统仿真响应的研究中，MATLAB也体现其强大的作用，用MATLAB仿真连续时间信号的卷积计算，离散、连续LIT系统的时域分析、周期信号的合成与分解、系统的复频域分析、信号的调制与解调，还有离散系统的Z域分析。

Information processing; flexible disk cartridge 200 using two sides; method of recording and formatting using modified frequency modulation recording with 13 262 flux transitions per rad

信息处理。软盘200的记录方法和格式化。在13262通量变换/轮上的修改的交流脉冲特性。双面使用

In the first time upsurge of multimedia, if you have times doubler fast CD driver and sound of frequency modulation complex get stuck, perfectly.

在多媒体的第一次热潮中，假如你拥有一台双倍速的光盘驱动器及调频合成的声音卡，就相当不错了。

An electron tube used to amplify or generate ultrahigh frequency by means of velocity modulation.

速调管一种用速度调节的方法放大或产生超高频率的电子管。

An electron tube used to amplify or generate ultrahigh frequency by means of velocity modulation .

在磁表面存储技术中一种表示数据的方法，例如改进型调频制。

After theoretically modeling, experiments were carried out to measure a CW laser modulation spectrum generated by a diode laser and an EOM device with the proposed method. Compared with the measuring results with F-P interferometer, experimental results show the feasibility of an optical beat frequency method.

本文在理论建模与分析的基础上，利用该方法对半导体激光器出射激光经电光调制器调制产生的调制光谱进行了测量，测量结果与F-P干涉仪测量结果一致，验证了该方法的可行性。

It is based on the method of modeling mobile voice channel and system identification is made so that the waveform samples are designed in frequency domain with less signal distortion.Then the waveform codebook is gotten by a genetic algorithm which has the maximum Euclidean distance.Thus,the modulation and demodulation are equivalent to the mapping from index to waveforms and from waveforms to index.

提出了对移动话音业务信道建模的思想，通过系统辨识获得模型的频率响应特性，在波形畸变较小的频带范围设计波形频谱，采用遗传算法在时域样本空间全局寻优获得欧几里德距离最大的波形码本，通过码本索引值和波形矢量的映射和解映射来实现数据的调制和解调。

With optical feedback,the modulation frequency of output intensity is proportional to the ratio of external cavity length to internal cavity length.

有光回馈时，同时改变激光频率和外腔相位，激光器输出功率波动频率正比于内、外腔长度之比。

This thesis introduces the design and the realization of numerical frequency modulation high fidelity radio.

本文介绍了数字调频立体声收音机的设计与实现。

The frequency changer velocity modulation technology is technology and so on collection automatic control, micro electron, electric power electron, correspondence to a body high tech technology.

摘要变频器调速技术是集自动控制、微电子、电力电子、通信等技术于一体的高科技技术。

I can not negligent, he should do what?

我不能不在意了，他要做什么呢？

It is very dangerous to swim in the river alone.

一个人到河里游泳是很危险的。