signal n. 1.信号,暗号;信号器。 2.动机,导火线 (for)。 3.预兆,征象。 call signal 【无线电】呼号。 an alarm signal 警报(器)。 an information signal 〔美国〕暴风警报(旗)。 an international code of signals 国际通用信号。 a signal of distress =a distress signal 船只失事信号。 adj. 1.暗号的,作信号用的。 2.显著的,非常的,优越的。 a signal victory [defeat] 大胜[败]。 vt.,vi. (〔英国〕 -ll-) 发信号[警报]给(人、船等);用信号[警报]通知(暴风、危险等);用动作[手势]示意;预示。 a signaling bomb 信号弹。
Video signal representation includes three aspects : the visual representation , transmission and digitalization 视频信号的表现包括三个方面:视觉表现、传输与数字化。
Part i deals with background material in the acoustic theory of speech production , acoustic - phonetics , and signal representation 第一部分讲述有关语音生成的声学理论的背景知识,声学-语音学,及信号表达。
As compared with the solution using pulse envelope representation , the propagation equation using complex analytic signal representation reveals different spatiotemporal behaviors such as spectrum redshifting , narrowing , and pulse broadening , etc . 2 复解析信号解会出现光谱红移、变窄、脉冲变宽等与脉冲包络解不同的时空特性。
The four - parameter basis functions decomposition of time - frequency signal representation is presented based on the characteristics of doppler frequency of the radar echoes , thereby dopplerlet transform is introduced 根据接收到的雷达目标回波信号的多普勒频率特性,提出用4参数基函数的时频信号表示法,从而引出多普勒小波变换的概念。
It is well known that discrete wavelet transform yields a shift variant signal representation , which means that a simple integer shift of the input signal will usually result in a nontrivial modification of the decomposed coefficients 近年来,基于小波变换的多传感器融合得到了广泛的关注与研究。但小波变换由于其变换过程中存在2取1的抽样过程,使得小波变换不具备移不变特性。
In past decade , scalable video coding , allowing partial decoding at a variety of resolution and quality levels from a single compressed stream , is widely considered as a promising resolution for efficient signal representation and transmission in a network environment , such as wireless - net , internet 经过近十年的研究,可扩展视频编码被认为是一种在无线、因特网等网络环境下进行视频传输的编码解决方案,它仅用一个可调整的码流就可以满足不同用户的个性化需求。