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。