信号与系统教学课件：1-3 Transformation of variables

1、Chapter 1 Signals in time domain,Signals and Systems,1.1 Signal measuring and expression 1.2 Operations for signal values 1.3 Transformation of variables 1.4 Sinusoidal and Exponential signal 1.5 Impulse signal and step signal,Sinusoidal signal,Amplitude Frequency Initial phase,Amplify Time-scaling

2、Time-shift,1.4 Sinusoidal and Exponential signal,1.4 Sinusoidal and Exponential signal,Sinusoidal signal,Some useful properties,1.4 Sinusoidal and Exponential signal,CT Sinusoidal signals: periodic,1.4 Sinusoidal and Exponential signal,DT Sinusoidal signals,1.4 Sinusoidal and Exponential signal,If,T

3、hen,1.4 Sinusoidal and Exponential signal,DT Sinusoidal signals be periodic,CT complex exponential signals,Both and are real,1.4 Sinusoidal and Exponential signal,Real exponential signals,growing constant decaying,1.4 Sinusoidal and Exponential signal,Imaginary exponential signals,1.4 Sinusoidal and

4、 Exponential signal,Both and are real,DT complex exponential signals,1.4 Sinusoidal and Exponential signal,Real exponential signals,growing constant decaying,1.4 Sinusoidal and Exponential signal,DT step and impulse signal,Unit impulse,1.5 Impulse signal and step signal,Unit step,DT step and impulse signal,1.5 Impulse signal and step signal,Step and impulse,1.5 Impulse signal and step signal,Sampling with impulse,1.5 Impulse signal and step signal,Combinations of all the samples,1.5 Impulse signal and step signal,Any signal can be represented by the combinations of impulse