modulation

1. VERB 改变，调节(嗓音或声音)
   If you modulate your voice or a sound, you change or vary its loudness, pitch, or tone in order to create a particular effect.
   1. He carefully modulated his voice.
      他小心地压低了声音。
2. VERB 调节;调整
   To modulate an activity or process means to alter it so that it is more suitable for a particular situation.
   1. These chemicals modulate the effect of potassium.
      这些化学物质可以调节钾的功效。

1. The method which is used in the first frequency modulation can be mended by PMU.
   利用其PMU能测量和记录发电机组当地频率改进一次调频控制与考核；
2. In this paper, a new modulation scheme which combines the grid coding with the CCK modulation is proposed.
   文中一个新的调制方案是把网格编码和CCK调制结合起来提出来的。
3. The low jitter transmission of pulse signals is realized by direct RF-modulation based on PLL frequency modulation.
   介绍了锁相调频的基本原理，用锁相调频的射频直接调制方法实现了脉冲信号的低抖动传输。
4. SC-FDMA is a technology using single-carrier modulation and frequency-domain equalization, has the property of low PAPR.
   而SC-FDMA（单载波频分多址）是一种使用单载波调制和频域均衡的技术，具有低PAPR这一显著特性。
5. This paper presents a method to perform the continous modulation of AC power by using a micro-processor and SSR.
   提出了一种基于微处理器和利用固态继电器实现交流功率连续调整的方法。
6. This procedure describes in detail the MSK modulation in mobile communication applications and effectiveness.
   本程序详细描述了MSK调制方式在移动通信中的应用和效果。
7. The feasibility of DC modulation technology application in the Northwest China grid was studied in this paper.
   对直流调制技术在西北电网应用的可行性进行了研究。
8. The performance for the frequency modulation of electrical feedback optical transmitters is presented.
   本文研究了电反馈光发射机的频率调制特性。
9. At last it discusses the dual-mode transmission technology of the Ultra Narrow Band Modulation and the FM combination.
   最后着重讨论了超窄带调制与FM结合的双模式传输技术。
10. This thesis studies and designs a wireless interphone of frequency modulation.
    本论文研究设计了一款调频无线对讲机。
11. The supply is provided with stability and self-protect performances as using pulse width modulation ( PWM) technology.
    运用脉宽调制技术（PWM）使其具有良好的稳定性和自保护性能；
12. Finally, the smoothing of BPSK modulation, and optimization of its performance are performed.
    最后提出了平滑化BPSK调制，优化了性能。
13. Research on Multi-carrier Modulation and MC-CDMA Interference Cancellation
    多载波调制和MC-CDMA的干扰消除研究
14. In digital phase modulation system, there always exists carrier phase-ambiguity in the process of coherent demodulation.
    在数字相位调制系统的相干解调过程中，普遍存在着载波相位模糊问题。
15. In communications, the frequency range of the information bearing signals prior to combination with carrier wave by modulation.
    在通信技术中，未经调制使之和载波结合之前，携带信息的信号所占有的频率范围。
16. Differing from frequency error track, it avoid spurious modulation and complexity caused by phase-locked loops.
    与频率误差跟踪不同，它避免了锁相环引入的寄生调制和复杂性。
17. Furthermore, the azimuth effect can affect the signal modulation and the performance of the tracking system.
    此外，方位效应还会影响信号的调制和跟踪的性能。
18. The modulation recognition technique of QAM signal by the constellation diagram is given in this paper.
    给出了利用信号星座图的QAM信号调制方式识别技术。
19. In pulse code modulation, a basic group of channels assembled by time division multiplexing.
    在脉码调制技术中，通过时分多路器而组合在一起的一种信道基本群。
20. A new frequency estimation technique for BPSK modulation signals embedded in strong noise is proposed.
    在强噪声背景下，针对BPSK调制信号，提出了一种新的频率估计技术。
21. Measurement results validate the multi-mode modulation function and high pulse resolution.
    测试结果验证了该调制器的多模功能和高精度的脉冲宽度。
22. Loop frequency locking technique in phase modulation spectroscope technique R-FOG system has been researched.
    对基于调相谱检测技术R-FOG系统中的环路频率锁定技术进行了研究。
23. 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。
24. Similarly, the introduction of voice encoding techniques using pulse code modulation contributed to the concept's evolution.
    利用脉冲编码调制的话音编码技术同样也对这一概念的发展起了作用。
25. This thesis firstly introduce the function, performance index and operation principle of the wireless interphone of frequency modulation.
    首先介绍了调频无线对讲机的功能、性能指标和工作原理。
26. We theoretically analyze and experimentally demonstrate a method of generating equal-amplitude optical comb exploiting multi-frequency phase modulation.
    我们理论分析并实验验证了一种利用多频相位调制产生等振幅光梳的方法。
27. This paper proposed a modulation recognition algorithm for M-QAM signals.
    提出了一种M-QAM信号的识别算法。
28. The modulation parameter estimation of LFM signal and MPSK signal was studied.
    研究了线性调频信号、相位编码信号的调制参数识别问题。
29. The reasons for this spurious modulation, mathematical model and compensation method are studied.
    研究了这种寄生调制产生的原因、数学模型以及补偿的技术。
30. Frequency conversion function is realized in RF module, and the RF modulation of the signal is completed.
    射频模块实现了上变频功能，完成了信号的射频调制。

noun

1. the act of modifying or adjusting according to due measure and proportion (as with regard to artistic effect)

2. (electronics) the transmission of a signal by using it to vary a carrier wave

3. a manner of speaking in which the loudness or pitch or tone of the voice is modified

   Synonym:    inflection

4. rise and fall of the voice pitch

   Synonym:    intonationpitch contour

5. a musical passage moving from one key to another

   Synonym:    transition