modulation

英 [ˌmɒdjʊˈleɪʃən]

美 [ˌmɑdʒəˈleɪʃən]

n.  调制；调谐；变调；缓和

复数：modulations　

计算机

BNC.16953 / COCA.19940

柯林斯词典

• VERB 改变，调节(嗓音或声音)
  If youmodulateyour 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。
• VERB 调节;调整
  Tomodulatean 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。

英英释义

noun

• the act of modifying or adjusting according to due measure and proportion (as with regard to artistic effect)
• (electronics) the transmission of a signal by using it to vary a carrier wave
• a manner of speaking in which the loudness or pitch or tone of the voice is modified
  Synonym:inflection
• rise and fall of the voice pitch
  Synonym:intonationpitch contour
• a musical passage moving from one key to another
  Synonym:transition

双语例句

• 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。
• 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。
• 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。
• 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。
• 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。
• 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。
• 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；
• 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。
• 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。
• 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；