"数字信号处理教学课件：离散时间信号与系统在时域的分析"

Digital signal processing is a crucial part of modern technology, allowing for the manipulation and analysis of signals in various applications. One key aspect of digital signal processing is understanding discrete-time signals and systems in the time-domain. When discussing digital signal processing, there are three main concepts to consider: analog signals, discrete-time signals, and digital signals. Analog signals are continuous in time and amplitude, while discrete-time signals are discrete in time but continuous in amplitude. Digital signals, on the other hand, are discrete in both time and amplitude due to quantization. To obtain a discrete-time signal, the signal is defined at equally spaced discrete values of time, with the signal amplitude being continuous at these discrete times. This process allows for the analysis and manipulation of signals in a digital format. In Chapter 2 of the course material, "Discrete-Time Signals and Systems in the Time-Domain," students are taught the fundamentals of discrete-time signals and systems. This includes understanding how to obtain a discrete-time signal and the differences between analog, discrete-time, and digital signals. Overall, the study of discrete-time signals and systems in the time-domain is essential for anyone working in the field of digital signal processing. By understanding these concepts, individuals can effectively analyze and manipulate signals in various applications, leading to advancements in technology and communication.